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  1. #1
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    MRP Announces Sram Direct Mount Chain Rings (Spiderless) w/ Chainline off-set!

    YES! No more waiting forever and dealing with Homebrewed components crappy customer service! MRP announced the other day via Facebook they are releasing direct mount Sram chain rings with a chainline offset so they work well with chain guides in 1x applications.

    Here is the quote "STILL HOT FROM MACHINES! Our chainguide-friendly 28, 30, and 32t direct-mount chainrings for SRAM cranks are ready for final finish work! Available mid-April! 28t pictured."

    they also said bigger rings (34,36, etc) will be available by summer.

    cant wait to order a 32T and maybe a 30T for mountain climbs...


  2. #2
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    Looking forward to trying these. Waiting to get one as soon as they are available. Already have my Micro guide on its way from MRP.

  3. #3
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    thanks for this info. i've been wanting to go spiderless but didn't want to have to deal with homebrewed again.

  4. #4
    tkj
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    I want one now. I still like the looks of the HBC one better, but 3-4 months is too long to wait!

  5. #5
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    Quote Originally Posted by tkj View Post
    I want one now. I still like the looks of the HBC one better, but 3-4 months is too long to wait!
    the chain line off-set is also a big deal.. I have a HBC ring and the ring is way to far over.

  6. #6
    tkj
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    What do you mean by "way too far over?" What is the chainline for the HBC spiderless ring on a Sram crank? MRP says they are making the offset better for chainguides. What is the offset and final chainline?

  7. #7
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    on the HBC ring, it is flush against the crank making it even farther over than a third ring on a triple setup. the MRP is offset to make it lineup like a middle ring on a triple, which makes the chain run much straighter.

  8. #8
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    So that facebook not from MRP is a couple weeks old. Anybody see an available date?

  9. #9
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    Quote Originally Posted by bluestatevirgin View Post
    So that facebook not from MRP is a couple weeks old. Anybody see an available date?
    "MRP : ‎Art, we'll post it up here as soon as we're comfortable taking orders. Should be early April, the ship-date target is immediately following the Sea Otter Classic - so, Monday April 23."

  10. #10
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    Quote Originally Posted by 'size View Post
    "MRP : ‎Art, we'll post it up here as soon as we're comfortable taking orders. Should be early April, the ship-date target is immediately following the Sea Otter Classic - so, Monday April 23."
    Thanks. I remember seeing this, but now early April is on its way out, so I was hoping for a more recent update. As we all know "target dates" are, well, "target dates".

    I'm impatient because I want to order ahead of availability because demand often outstrips supply on these first run items.

  11. #11
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    According to my LBS, MRP's Micro (28-32T) is already available. I just had them order me one. I'll be getting this in anticipation of their spiderless rings.

    I've been running an HBC set-up 1x10 (without a guide) for some time now without too much issue. Because of the lack of inboard offsetting, I do find that the chain will drop down the cassette while backpedaling most times. Not too bad though. And i love the machining on the HBC rings. Great stuff! I'm just hoping that the MRP set-up will just make things all nice and tidy and allow the use of a proper guide.

  12. #12
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    All they say is chainguide friendly. I don't see anything about them being offset to maintain chainline? I'm assuming the rings are going to be dished toward the middle ring? What am I not seeing here?

    Thanks

  13. #13
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    Quote from the MRP FaceBook page - "Exactly Jim! Our ring is offset inboard, giving you the same chain-line as a chainring mounted in the middle position of a triple crank."

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    Ahhh great news! And I was just sitting there in bike room "the situation room" wondering how the hell my Bontrager Carbon Spiderless crank was going to run a good chainline with my HBC 30T

    I asked if they'll have anodized gold...I'll post back later when they respond!

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    From Technical Service Rep:

    The direct mount rings are made for a 51mm chain line, so it is the optimum for chain guides. There will be a 28, 30 and 32 to start. No color options only a gun metal grey anno.

  16. #16
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    Subbed for updates! Any pricing?

  17. #17
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    Just picked up my MRP Micro G2 SL chainguide today. Nice! Waiting on those MRP rings!

  18. #18
    "THE RIDE IS MY CHURCH"
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    Do you know if it will be availaable for Hollowgram cranksets in a 36T ?
    Last edited by torque29er; 04-19-2012 at 05:11 PM.

  19. #19
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    Just saw all of these in person yesterday at MRP. Did a factory walk through...-and Wow. What a operation they have going on there. Big props to the old saying Made in the USA. With pride!!
    High Ho Sultan, Lets GO

  20. #20
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    Quote Originally Posted by in the trees View Post
    Just picked up my MRP Micro G2 SL chainguide today. Nice! Waiting on those MRP rings!
    So this micro G2 SL is rated 28t-32t? How much was it? How did you order it?

    Brenda

  21. #21
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    Any updates on availability? You would think that MRP's website would at least have a teaser but other than MTBR I can't seem to come with any info on the new rings

  22. #22
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    I emailed MRP and got this response within 30 minutes!!!! (impressive)



    I have happy news.....they should be available in early May 2012. It will be posted as soon as they are released.

    Have a fabulous day!

    Billie Uriguen
    Customer Service

    580 N Westgate Dr
    Grand Junction, CO 81505

    970-241-3518
    970-241-3529 fax

  23. #23
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    Can you order direct from them or will we have to wait longer to actually order?

  24. #24
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    Quote Originally Posted by motochick View Post
    So this micro G2 SL is rated 28t-32t? How much was it? How did you order it?

    Brenda
    I had my LBS order one directly from MRP.

    And I also sent an email recently to MRP and was told May availability for the spiderless chainrings as well.

  25. #25
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    Quote Originally Posted by subspd View Post
    Can you order direct from them or will we have to wait longer to actually order?
    Yes you can but you may be able to get a better price 3rd party like LBS and such

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    Last edited by pamt; 04-24-2012 at 07:34 AM.

  28. #28
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    Need one of these for sure with a Pauls chain keeper this will be a great 1x10 setup

  29. #29
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    Didn't I see in the pinkbike article that the rings hadn't gone into production yet? Pinkbike could be wrong on the facts, but if not that likely puts the arrival date back later than we should expect.

  30. #30
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    Quote Originally Posted by bluestatevirgin View Post
    Didn't I see in the pinkbike article that the rings hadn't gone into production yet? Pinkbike could be wrong on the facts, but if not that likely puts the arrival date back later than we should expect.
    Read that as well. I'm hoping they are released soon. And again I was told May by MRP. Fingers-crossed!

  31. #31
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    These will be great for people not willing to wait on HBC

  32. #32
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    Quote Originally Posted by 2002maniac View Post
    These will be great for people not willing to wait on HBC
    As far as I'm concerned HBC took my money and ran. Ordered a spider less chain ring from them back in jan. and got nothing, tracking status has stayed same for past 3 weeks "marked for shipping" . No response from HBC when I said i had enough and made numerous request for refund.



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  33. #33
    GUIDANCE COUNSELOR
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    So our first batch didn't quite meet our exacting standards - so we're offering them as "blems" at a sick price. Basically, they are a little out of round - it varies by ring sizes but none of them are "out" by more than .45mm (explained more fully on the product page). They were also supposed to be bead-blasted, but instead came back just anodized.

    These probably aren't the best for single-speeds, but for 1x9/10 they should be fine - we can't even feel it in the ones we've mounted so far.

    The MSRP on these was planned to be $69.95, and we're offering these at $45.



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  34. #34
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    Quote Originally Posted by NoahColorado View Post
    These probably aren't the best for single-speeds, but for 1x9/10 they should be fine - we can't even feel it in the ones we've mounted so far.
    curious how it would differ between SS and geared if the chain is never leaving the ring in either instance, you still have a constant on the ring.

  35. #35
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    Quote Originally Posted by 'size View Post
    curious how it would differ between SS and geared if the chain is never leaving the ring in either instance, you still have a constant on the ring.
    Because on a single-speed there is nothing to take up slack (like a rear derailleur) - I know that drastically out-of-round rings (and flexy rings) make your chain tight-slack-tight-slack on a SS.

    I could be wrong though, I think I've seen people running Rotor rings on singelspeeds. But, their rings are oval, whereas ours are slightly eccentric.

    We're probably being overly-sensitive to the roundness issue - but we pride ourselves on producing high-quality parts, and these rings ain't cheap, so we expect them to be perfect (at full price).

    I checked every single one of the rings yesterday (~100) by mounting them to a crank and taking measurements.
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  36. #36
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    Will these work with bb30 sram cranks? Specifically on SRAM S1400 PF30 w/ Hollow Arms?

  37. #37
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    Quote Originally Posted by NoahColorado View Post
    We're probably being overly-sensitive to the roundness issue...
    i think so but that's what any company should do to ensure customer satisfaction. i don't ride SS but i really doubt that less than .5mm off is going to really effect chain tension to the point it's detrimental to the rider or bike...

  38. #38
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    Ordered!!! I'll be the guinea pig. Plus, I can't just have a Micro guide sitting here without a proper ring.

  39. #39
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    Quote Originally Posted by NoahColorado View Post
    So our first batch didn't quite meet our exacting standards - so we're offering them as "blems" at a sick price. Basically, they are a little out of round - it varies by ring sizes but none of them are "out" by more than .45mm (explained more fully on the product page). They were also supposed to be bead-blasted, but instead came back just anodized.

    These probably aren't the best for single-speeds, but for 1x9/10 they should be fine - we can't even feel it in the ones we've mounted so far.

    The MSRP on these was planned to be $69.95, and we're offering these at $45.



    Cheers
    Will anything be offered to work with the Hollowgram Cranks ?

  40. #40
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    Quote Originally Posted by subspd View Post
    Will these work with bb30 sram cranks? Specifically on SRAM S1400 PF30 w/ Hollow Arms?
    I *think* so - the one bike we have here with BB30 cranks (Salsa Spearfish) is outta the office today, but I think that one is running a 28t ring. I'll look into it and post here as soon as I find out!
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  41. #41
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    MRP just released some. They are slight blems, but only $45 - just ordered a 32T

    Mountain Racing Products home of MRP, White Brothers, Kreitler, Tamer, and Power Grips | Shop


    ooops I did not see the post by MRP... ordered my 32T today!
    Last edited by darrinw2001; 04-26-2012 at 04:08 PM.

  42. #42
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    Quote Originally Posted by subspd View Post
    Will these work with bb30 sram cranks? Specifically on SRAM S1400 PF30 w/ Hollow Arms?
    Yes

  43. #43
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    Quote Originally Posted by NoahColorado View Post
    I *think* so - the one bike we have here with BB30 cranks (Salsa Spearfish) is outta the office today, but I think that one is running a 28t ring. I'll look into it and post here as soon as I find out!
    Cool thats the exact bike I am looking to put it on...

  44. #44
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    Tempting. But what ring size to order? That's a tough one. Can't afford all three.

  45. #45
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    Ordered a 32t. Gonna sell my brand new HBC 32t.

  46. #46
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    Just ordered a 30T Bling (and waiting for a 29T from HBC too)!

  47. #47
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    Will it works with SRAM AKA crankset ?

  48. #48
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    Quote Originally Posted by gautama108 View Post
    Will it works with SRAM AKA crankset ?
    Yes, the 1.1G and 2.1AM have removable spiders.

  49. #49
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    the big selling point to me on these (besides not having to deal with HBC's crappy service and wait times) is the fact that it is off-set to make the chainline better. a flat CR against the cranks makes it really hard to make the guide not rub on a 1X set-up. Thanks for making these MRP!

  50. #50
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    I should have the new micro guide today, I just wish I could use some cool Sram cranks with the new bling ring. The only thing they make in a 165mm that works is WAY too expensive for what I am doing. I am going Middleburn, not spiderless after hearing all the complaints about HBC. Pics when I get it.

  51. #51
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    Wow! ordered my Bling ring yesterday after 6pm and it shipped today! no 3 to 5 month wait with no communication! Thanks MRP!

  52. #52
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    Got my shipment email a little while ago as well. Can't wait to get this set-up.

  53. #53
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    Crap! Running two of the newer XTR 2x10 cranks, single ring, 30T, with garage built chainguide setups that work very well, but would LOVE to have something like this that could work out of the box.

    Since their chain-line is further inboard, closer to that of the SRAM 2x10 stuff rather than the 104/64 BCD stuff, wonder if one of these will work...

    Anyone have any idea? Have PM'ed Noah asking same - we'll see what he tells me. In the meantime, have ordered one up to play with anyhow!

    Even getting a good deal on the two XTR cranks, I'm not really wanting to now shell out more to get other new cranks! Had I known these were coming, would have waited on ordering new cranks!

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  54. #54
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    Dont know why people are complaining about the HBC and Micro.

    I am running a 32t HBC ring and the Micro and i have no problems. Running a 1x10 setup. No rub, no back pedaling issues. The only thing is time. MRP will sell alot of these rings due to people wanting things now.

    <a href="http://www.flickr.com/photos/30417679@N04/6806920218/" title="Untitled by DuckmanEG, on Flickr"><img src="http://farm8.staticflickr.com/7064/6806920218_451dc4a89c_z.jpg" width="640" height="480" alt="Untitled"></a>

    <a href="http://www.flickr.com/photos/30417679@N04/6976027028/" title="photo(3) by DuckmanEG, on Flickr"><img src="http://farm8.staticflickr.com/7063/6976027028_d79f3b308f_z.jpg" width="640" height="480" alt="photo(3)"></a>

  55. #55
    Te mortuo heres tibi sim?
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    Quote Originally Posted by DuckmanEG View Post
    Dont know why people are complaining about the HBC and Micro.

    I am running a 32t HBC ring and the Micro and i have no problems. Running a 1x10 setup. No rub, no back pedaling issues. The only thing is time. MRP will sell alot of these rings due to people wanting things now.


    Not so much the rub folks are *****ing about, IMO, but the bring availability and wait/lead time in the first place from HBC.

    I've been waiting on a bash for the XTR crank for I think near three months now...thus the hack job on the big ring to turn it into a bash ring anyhow.
    Florence Nightingale's Stormtrooper

  56. #56
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    Quote Originally Posted by DuckmanEG View Post
    Dont know why people are complaining about the HBC and Micro.

    I am running a 32t HBC ring and the Micro and i have no problems. Running a 1x10 setup. No rub, no back pedaling issues. The only thing is time. MRP will sell alot of these rings due to people wanting things now.
    For those of us without ISCG tabs and are stuck with BB mounted 1X guides, there isn't any adjustment for chainline. I bought the HBC, waited 2 months to get it only to find that it won't work with my chainguide. It would have been nice to know before I ordered it.

    The MRP has a proper chainline and it shipped the day after I ordered it. MRP for the win!
    Ibis Mojo HD3 - Norco Torrent 7.1

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    Sorry you would be correct. I forget about the little things. I was able to add and remove the washers until I had it where i wanted. Like I said though wasn't hating on MRP, just trying to lessen the HBC bashing because I got my product and more then pleased with it. I will more then likely order from both still.

  58. #58
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    I've had great luck with HBC with the five orders that I have placed over the past few years. Good communication and delivered in the time frame mentioned on their website. The offer rings and cogs that definitely fill the need. I like their products and will continue to use them.

    However, I think that the MRP will just be a little better because of the offset chain line for my current application. And I am excited to try the complete "system" with the guide.

  59. #59
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    Mrp needs purple and I will be happy. Lol.

  60. #60
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    Quote Originally Posted by DuckmanEG View Post

    <a href="http://www.flickr.com/photos/30417679@N04/6976027028/" title="photo(3) by DuckmanEG, on Flickr"><img src="http://farm8.staticflickr.com/7063/6976027028_d79f3b308f_z.jpg" width="640" height="480" alt="photo(3)"></a>
    Glad to see you up and running already!! Hopefully see you around Palos!
    konahonzo

  61. #61
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    Um.....wow!!! Ordered from MRP late last week (Thurs) and just received it via the USPS (CO to NH). That was fast! And looks great. Hopefully I will get a chance to install it tomorrow.

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    Got mine today also! Great customer service!

  63. #63
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    Crazy! Mine showed up yesterday too! I took some pics, weighed it and started to install it but I ran out of time.

    Weight for a 28T was 53g. (HBC 28T was 51g) Weight for the 2x10 spider and 38/24T chainrings was 195g.

    The HBC chainline was off by about 3mm outboard. Not a lot, but when your chainguide only has 0.5mm of adjustment, it's too much.

    MRP packaging vs HBC packaging






    I love ordering something and getting it in a couple of days instead of a couple of months. I love when I get an email saying my part has shipped and my part actually ships, and doesn't take 2 weeks to get to my door. (especially since it's only shipping from San Diego to San Jose, CA) I love having a proper chainline. I don't care what color my chainring is.

    All that being said, both companies make excellent chainrings, but there's only one that I'll buy from again, and that's MRP.
    Ibis Mojo HD3 - Norco Torrent 7.1

  64. #64
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    This will be a great option once they get over the flaws from the first batch. A large reason for buying from HBC was how precisely round they are. Very important in a SS drivetrain. Glad to see we are getting another option, though.

  65. #65
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    Thanks for the pics! Man do I want one of these...

  66. #66
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    would someone who has these in hand be able to give me the diameter measurement for the 28 and 30T?

  67. #67
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    Wanting a SRAM 104 BCD removable spider -
    If anyone wants to part with theirs etc.
    $$$

  68. #68
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    Quote Originally Posted by 'size View Post
    would someone who has these in hand be able to give me the diameter measurement for the 28 and 30T?
    Mine is now mounted, but a 30T is about 5" in diameter.

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    Quote Originally Posted by killjoyken View Post
    Crazy! Mine showed up yesterday too! I took some pics, weighed it and started to install it but I ran out of time.
    I am expecting more pictures tonight. Can't wait to see it on the bike. Makes me wish I had a SRAM crank to run mine this way.

    Sent from my Kindle Fire using Tapatalk 2

  70. #70
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    Installed mine today on a SS setup.. it works OK, not enough out of round to effect it too much.. Will work perfect when I re-install the 1x9 setup





  71. #71
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    Quote Originally Posted by 'size View Post
    would someone who has these in hand be able to give me the diameter measurement for the 28 and 30T?
    I got 4.67" on a 28T.

    Quote Originally Posted by Dewmerz View Post
    I am expecting more pictures tonight. Can't wait to see it on the bike. Makes me wish I had a SRAM crank to run mine this way.
    Ask and ye shall receive...


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  72. #72
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    Quote Originally Posted by in the trees View Post
    Mine is now mounted, but a 30T is about 5" in diameter.
    Quote Originally Posted by killjoyken View Post
    I got 4.67" on a 28T.
    thanks gents.

  73. #73
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    So not noticeably out of round?

  74. #74
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    which chain keeper do you have there?

    Quote Originally Posted by killjoyken View Post
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  75. #75
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    Quote Originally Posted by Dan GSR View Post
    which chain keeper do you have there?
    E13 XCX. It came stock on my friend's Stumpy and he gave it to me. I had to machine it to go lower than a 32t, but it seems to be working.
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  76. #76
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    Quote Originally Posted by killjoyken View Post
    E13 XCX. It came stock on my friend's Stumpy and he gave it to me. I had to machine it to go lower than a 32t, but it seems to be working.
    that is the exact reason i was wanting measurements - i wanted to make sure i could mod my bb mounted xcx to drop low enough for the 28t. thanks again.

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    i just ordered a 28t, and some new truvativ aka cranks to fit them on.
    excited !!

  78. #78
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    Just ordered my 32T today with a Lopes guide, gotta find a set of blue XO cranks!!
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  79. #79
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    my 28 and 30t rings and x.9 cranks both showed up today - time to mod my xcx guide and get things installed.

  80. #80
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    well things are not going well for my install. the ring is off center of my chain guide by a few mm. got a couple of options here:

    i'm either going to have to try to find some sort of spacer to move the ring away from the cranks a bit and hope the pressure of the bolts against the ring but not the crank is enough to hold without any issues. not to mention if there is enough surface contact between the ring and crank to keep things from eventually wearing. or...
    bend the chainguide a bit to get it centered over the ring. both of which i hoping to avoid with these rings.





    this is with an x9 crank and gxp bb setup. i won't even go into the truvativ crank/bb mess. now i remember why i moved away from their cranks and bb's years ago.

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    add some washers to space the guide out a bit
    put them between the white guide and black BB mount

  82. #82
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    Quote Originally Posted by Dan GSR View Post
    add some washers to space the guide out a bit
    put them between the white guide and black BB mount
    the plastic guide and metal bracket are both slotted im a few places to allow the guide to move up and down and keep everything from rotating at the bolt. i could mod it to space it out but i'm not sure how well it would hold or for how long.

  83. #83
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    Quote Originally Posted by Dan GSR View Post
    add some washers to space the guide out a bit
    put them between the white guide and black BB mount
    Unfortunately you can't do that with the XCX since the guide is captured to the mount. The only adjustment is at the BB.

    Quote Originally Posted by 'size View Post
    i'm either going to have to try to find some sort of spacer to move the ring away from the cranks a bit and hope the pressure of the bolts against the ring but not the crank is enough to hold without any issues. not to mention if there is enough surface contact between the ring and crank to keep things from eventually wearing. or...
    bend the chainguide a bit to get it centered over the ring. both of which i hoping to avoid with these rings.
    I've got an easy fix for you since I ran into the same problem. Don't give up on the SRAM cranks just yet. I've actually found them to be just as good as Shimano and I now run them on all 3 of my bikes.

    The crank spindle is only captured on the non drive side BB cup. Therefore you can adjust the guide by placing a single 2.5mm spacer between the frame and guide. This will bring the drive side BB cup very close to the ring, but shouldn't actually touch it. This is how mine is setup.

    So you should have: frame -> 2.5mm spacer -> guide -> chain ring

    Then spin the cranks and make sure it's not rubbing. If it is, then you may need to run a thinner spacer. I know Shimano makes a 1.8mm and I know other companies make 0.5mm spacers that you could stack.
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    to me it looks like your chain guide is bent in toward the frame at the top.. it is not a straight line from bb to top of CG..

  85. #85
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    Quote Originally Posted by killjoyken View Post
    I've got an easy fix for you since I ran into the same problem. Don't give up on the SRAM cranks just yet. I've actually found them to be just as good as Shimano and I now run them on all 3 of my bikes.

    The crank spindle is only captured on the non drive side BB cup. Therefore you can adjust the guide by placing a single 2.5mm spacer between the frame and guide. This will bring the drive side BB cup very close to the ring, but shouldn't actually touch it. This is how mine is setup.

    So you should have: frame -> 2.5mm spacer -> guide -> chain ring

    Then spin the cranks and make sure it's not rubbing. If it is, then you may need to run a thinner spacer. I know Shimano makes a 1.8mm and I know other companies make 0.5mm spacers that you could stack.
    that's a great solution but i still wonder about a few things:

    how many spacers do you have on the NDS? my initial issue with the the crank/bb was that even with a 2.5mm spacer on both sides (as instructed by SRAM for a 68mm shell) it still left the spacing too narrow and moved the DS too far out - the chain line was a disaster. since like you said, the NDS captures the stepped axle and prevents the DS of the crank from moving any further inboard. i spaced the NDS cup out further to allow the axle and DS crank arm/ring to move further inward to fix the chainline.

    i'm wondering now if i add additional spacers between the DS shell and guide plate if the axle will push further into the bb cup without causing any issues with binding or the DS bearing. it seems the spindle only wants to go so far into the cup then it takes a bit of force to get it past that point. either way i'll give it a shot as it seems it's the only real solution that doesn't involve modding parts or buying a different guide with chainline adjustment.

  86. #86
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    I've got a 73mm bb so I'm not running a spacer on the NDS. How many spacers are you running on the NDS of yours?

    As far as the DS bearing, I've got a spare X9 crank and BB here and the DS cup slides all the way up the spindle til it hits the crank arm with no force.
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    Looks like there is some issue with your setup. I would first make sure everything is tight, make sure you've actually tightened down the NDS crankarm until it has bottomed. It's too bad there is zero adjustment with that guide, our 1x guides have 3mm of adjustment - it'd be an easy solution with one of those. You could face your NDS BB shell face - that would bring your chainline outboard - it's a bit drastic I know.

    Good luck!
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  88. #88
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    Quote Originally Posted by NoahColorado View Post
    Looks like there is some issue with your setup. I would first make sure everything is tight, make sure you've actually tightened down the NDS crankarm until it has bottomed. It's too bad there is zero adjustment with that guide, our 1x guides have 3mm of adjustment - it'd be an easy solution with one of those. You could face your NDS BB shell face - that would bring your chainline outboard - it's a bit drastic I know.

    Good luck!
    my chainline was already too far outboard. i needed to shift everything towards the NDS. i ended up putting a second 2.5mm spacer on the NDS and adding a 1.5mm spacer to the DS to push the DS cup closer to the DS crank arm - this worked and centered the guide over the ring.

    FWIW - the bike is a 2009 trance x with a 68mm shell.

    thanks for the help killjoyken...

  89. #89
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    Quote Originally Posted by 'size View Post
    i ended up putting a second 2.5mm spacer on the NDS and adding a 1.5mm spacer to the DS to push the DS cup closer to the DS crank arm - this worked and centered the guide over the ring.
    Sorry I got a little confused with what setup you had.

    Still, putting a DS spacer anywhere but behind the guide (between the guide and BB shell) shouldn't change ANY spacing. If you put the spacer between the guide and BB cup, and that changed any kind of spacing, you're gonna run into problems. The spindle is stepped and must bottom on the inside of the NDS BB cup's bearing, if it is the DS crank arm that this bottoming first (on the DS BB cup), that's gonna be a problem.

    Secondly, you shouldn't exceed a total of 75.5mm of total width. Sounds like you have, 68mm shell + 2 x 2.5mm spacers + guide (2.5mm) + 1.5mm spacer = 77mm. I think that could be a problem. But perhaps the e13 XCX guide isn't 2.5mm thick?
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  90. #90
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    Quote Originally Posted by NoahColorado View Post
    Sorry I got a little confused with what setup you had.

    Still, putting a DS spacer anywhere but behind the guide (between the guide and BB shell) shouldn't change ANY spacing. If you put the spacer between the guide and BB cup, and that changed any kind of spacing, you're gonna run into problems. The spindle is stepped and must bottom on the inside of the NDS BB cup's bearing, if it is the DS crank arm that this bottoming first (on the DS BB cup), that's gonna be a problem.

    Secondly, you shouldn't exceed a total of 75.5mm of total width. Sounds like you have, 68mm shell + 2 x 2.5mm spacers + guide (2.5mm) + 1.5mm spacer = 77mm. I think that could be a problem. But perhaps the e13 XCX guide isn't 2.5mm thick?
    shell > spacer > guide > BB.

    putting the spacer there just moved the DS cup closer to the crank/ring allowing the guide to be centered over the ring.

    the spindle is bottomed on the NDS bearing and the DS arm is not bottoming on anything - there is still clearance. the xcx guide plate is 1.5mm.

    i had a similar issue with my previous 1x setup using an xt crank/bb and HBC ring where the chainring/chainline was off center of the cassette outboard. but with the shimano setup the issue was just the opposite - i had to space the bb inboard on both sides a bit. i've already unbolted the linkage and determined there was nothing out of alignment so i'm not sure what is causing the chainline to not center on the cassette using industry standard parts. wheelset is a dt/swiss 240s bolt on and sram pg1090 cassette.

    one note - i did have to file down one of the chainring mounting bolts as the machining on the ring was not deep enough and the bolt head stuck up beyond the ring/crank interface. i did notice none of the machining was the same depth on any of the 3 bolt cut outs and the two rings i bought all have different machining depths. not a huge deal but i'm not sure about other spiderless cranks and bb setups and the amount of clearance they have between the bb and crank/ring.

  91. #91
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    Quote Originally Posted by 'size View Post
    my chainline was already too far outboard. i needed to shift everything towards the NDS. i ended up putting a second 2.5mm spacer on the NDS and adding a 1.5mm spacer to the DS to push the DS cup closer to the DS crank arm - this worked and centered the guide over the ring.

    FWIW - the bike is a 2009 trance x with a 68mm shell.

    thanks for the help killjoyken...
    Glad it's working for you now, although I'm still confused as to why you ended up needing more spacers than I did. Especially since you added another spacer to the NDS which should have reduced your chainline to 47.5 from 50.

    Quote Originally Posted by 'size View Post
    my initial issue with the the crank/bb was that even with a 2.5mm spacer on both sides (as instructed by SRAM for a 68mm shell) it still left the spacing too narrow and moved the DS too far out - the chain line was a disaster.
    When you first set it up the way SRAM instructs you to with one spacer on each side, was the chainring lining up with the middle of the cassette? By adding that extra spacer on the NDS, your cranks arm won't be centered with the BB shell. 2.5mm probably isn't enough to notice though.

    Thanks for chiming in Noah. I broke in the ring this weekend and if felt perfectly round to me!
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  92. #92
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    Quote Originally Posted by killjoyken View Post
    Glad it's working for you now, although I'm still confused as to why you ended up needing more spacers than I did. Especially since you added another spacer to the NDS which should have reduced your chainline to 47.5 from 50.
    this is exactly why i started questioning my frame. i don't like the idea of the hodge podge setup i have now but it was all i could do to get the chainring centered with the cassette. i'm pretty confident with my wrenching skills and have been at it a long time, but i may break down and hit up my local guru on this one.

    Quote Originally Posted by killjoyken View Post
    When you first set it up the way SRAM instructs you to with one spacer on each side, was the chainring lining up with the middle of the cassette?
    no, that is the entire reason i've been trying to figure it out - i didn't run a plumb line to see where it lined up exactly but it was visually obviously off. the cross chaining to get to 1st and 2nd was horrible and the chain would drop from 1st gear just pedaling around the neighborhood.

  93. #93
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    Any word on when the next batch of properly round rings will be in?

  94. #94
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    Quote Originally Posted by AOK View Post
    Any word on when the next batch of properly round rings will be in?
    Nope. No idea at this point, sorry.
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    This may be a dumb question but.. all the picture i have seen have had it mounted on bikes with an external bb.. do you think the 3mm offset is necessary on a bike with say a pf30 bb? or does that not make a difference?

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    don't have the Micro yet but... i got my climbing gear back! woo!

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    Got my XO cranks, Lopes guide, and 32tspiderless ring in over the weekend!!! Looks pretty sweet, I could have saved a few bucks ordering online, but just ordered direct from MRP.

    Still waiting on my wheelset from Stans(2 week backlog) and a few tough to find blue XO parts...

    Can't wait to rip on this thing....may be a bit overkill for where I ride,but should do nicely up at Boyette and Alafia with the roots and drops.





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  98. #98
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    Quote Originally Posted by ds33gt View Post
    Got my XO cranks, Lopes guide, and 32tspiderless ring in over the weekend!!!
    That looks insanely good! nice work! Wish I had the blue X0s - I got the boring red.
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    Its taken me a bit of time to peice it all together for a good price. I'm very impressed with the way it looks, can't wait to get the white Stans EX's on it. I went a little overboard on matching up all the colors, but it was worth it....
    '14 Yeti SB95c--Pike'd

  100. #100
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    Quote Originally Posted by block_xc View Post
    This may be a dumb question but.. all the picture i have seen have had it mounted on bikes with an external bb.. do you think the 3mm offset is necessary on a bike with say a pf30 bb? or does that not make a difference?
    I don't think the BB type changes anything in regards to chain-line. A chain running on a chainring that has an outboard chain-line is gonna be equally stressed in your easy gears no-matter what BB type you have. The offset reduces the chain's angle in the extreme, so you'll put less wear on the chain and likely have a quieter transmission.
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