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  1. #1351
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    Quote Originally Posted by AndreyI52 View Post
    My above post was not meant to be taken too seriously & probably deserve the negative reps I received for the post!
    Neg rep is a bit over-the-top, but your "analysis" is ridiculously shortsighted. Nowhere do you indicate that it's a joke or not to be taken too seriously, so it just sounds like you're jaded and using hack science to trying back it up.
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  2. #1352
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    Not to change the subject but,.... I got my tracking number!
    w00t!!!

  3. #1353
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    No negative rep from me as I thought the actual numbers were funny, I mean come on making any conclusion from a sample that small is ridiculous. But then again a lot us find statistics to be rediculous in general. If I were not broke and unemployed and did not have a perfectly good set of wtb laser disc trail wheels I would be all over these rims.


    Quote Originally Posted by AndreyI52 View Post
    My above post was not meant to be taken too seriously & probably deserve the negative reps I received for the post!

    You guys are passionate about these rims. They have a lot to offer & I hope they work for everyone who bought / acquired / got / purchased / procured them.

    I admire that the Light Bicycle manufacturing company has taken great initiative to invest in the manufacture of a potentially great product (especially the wider carbon rims). I also applaud the fact that they are willing to sell the product direct to consumers at a great price.

    But I still stand by statement that I am not willing to jump in just yet. I ride a 6" travel dual suspension bike & the risk is just too great from my perspective.

    By the way, I ride a carbon fiber framed mountain bike with carbon handlebars, so I am not a carbon hater. I just want to buy stuff that is proven to be reliable & is manufactured to decent consistent levels of quality.

  4. #1354
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    Quote Originally Posted by AndreyI52 View Post
    My above post was not meant to be taken too seriously & probably deserve the negative reps I received for the post!

    You guys are passionate about these rims. They have a lot to offer & I hope they work for everyone who bought / acquired / got / purchased / procured them.

    I admire that the Light Bicycle manufacturing company has taken great initiative to invest in the manufacture of a potentially great product (especially the wider carbon rims). I also applaud the fact that they are willing to sell the product direct to consumers at a great price.

    But I still stand by statement that I am not willing to jump in just yet. I ride a 6" travel dual suspension bike & the risk is just too great from my perspective.

    By the way, I ride a carbon fiber framed mountain bike with carbon handlebars, so I am not a carbon hater. I just want to buy stuff that is proven to be reliable & is manufactured to decent consistent levels of quality.
    I prefer to tell the poster what I think rather than anonymously give neg reps.

    your first post was just more added clutter to an otherwise good thread.

    your reply to your own post was a little better and somewhat informative.

  5. #1355
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    I beat the snot out my carbon rims and just recently on porcupine rim with a 5in 29er with no issues. I am 195 all geared up. Scratched the sides a bit, but nothing else. I vote to give them a try like everyone else.

  6. #1356
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    Yeah, srsly

    Quote Originally Posted by figo View Post
    ^^^ none taken, by me at least. And giving neg rep for such a post is just sad. Good thing that negative mtbr rep doesn't make ya slower on the trails :-)
    I got negative repped once for a post I made suggesting I'm a crossdresser. It was a bad joke, and directed at myself, so WTF... Some folks have no sense of humor, and are really quick with that button.

  7. #1357
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    Mine are on their way as well...... I went pre-built "ready-to-ride"

  8. #1358
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    Quote Originally Posted by AndreyI52 View Post
    My above post was not meant to be taken too seriously & probably deserve the negative reps I received for the post!

    You guys are passionate about these rims. They have a lot to offer & I hope they work for everyone who bought / acquired / got / purchased / procured them.

    I admire that the Light Bicycle manufacturing company has taken great initiative to invest in the manufacture of a potentially great product (especially the wider carbon rims). I also applaud the fact that they are willing to sell the product direct to consumers at a great price.

    But I still stand by statement that I am not willing to jump in just yet. I ride a 6" travel dual suspension bike & the risk is just too great from my perspective.

    By the way, I ride a carbon fiber framed mountain bike with carbon handlebars, so I am not a carbon hater. I just want to buy stuff that is proven to be reliable & is manufactured to decent consistent levels of quality.
    Clearly a joke.

    But at the same time, I honestly can't imagine that these rims could fail. Every day I try harder and harder to destroy them. When I put them in the truing stand, the spokes laugh at me while I strain to hear the rub that just isn't there. This is after swapping the wheels onto a hard tail and doing genuine AM riding.

    I can't speak for the rims that are failing, but the ones I purchased are rock solid and I'd recommend them to a Clydesdale DH racer on a fully rigid aluminum frame.

  9. #1359
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    Yeah...

    Quote Originally Posted by Bear Spleen View Post
    Clearly a joke.

    But at the same time, I honestly can't imagine that these rims could fail. Every day I try harder and harder to destroy them. When I put them in the truing stand, the spokes laugh at me while I strain to hear the rub that just isn't there. This is after swapping the wheels onto a hard tail and doing genuine AM riding.

    I can't speak for the rims that are failing, but the ones I purchased are rock solid and I'd recommend them to a Clydesdale DH racer on a fully rigid aluminum frame.
    My take on them is... from the posts here and one guy I know who breaks EVERYTHING who bought a set of these, and he's been beating on them for a couple months with zero issues.

    They're solid.

    But, anything can be broken in an accident. Seems to me that if there was a defect, it would probably make itself known before the initial build, or soon after when stressed for the first time on the trail. That is more of a feeling based on posts here, and what little I know about carbon fiber, than anything based on fact. I'm an uneducated electrical engineer (as in, I don't have my degree, but I know the math, specs and laws to figure stuff out) but understand some mechanics and physics.

    On a related note, I bought a Sun Inferno 23 29er rim to replace that Crest noodle on my Singlespeed... as a cheapo replacement. The thing is way stiff (but not ridden on a trail yet to confirm in the real world).

    How this relates to the carbon rim is... man! It is much easier to build a nice stiff rim than a noodley rim. I laced and tensioned that thing up, and hardly had to do any tweaking to make it round and straight. Easy Peasy build.

    I suspect the carbon rims will be similar to build.

    Speaking of which... what is the word on those spoke nipple washers? I was going to buy a bag of those oval ones like Sapims. Is there room inside the rim bed for washers? Either I install washers, or I'm sure my existing spokes will be too long by a couple of mm's. Each washer is 0.5mm thick, so one washer under each nipple should take up enough to get away with it.

    I'd rather not buy $65 worth of spokes unless I have to.

  10. #1360
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    Wheels built:
    3k, 32h, w/ brass nipples, dt revs front and nds read, wheel smith db14 drive side, 1540g.

    Bontrager rhythm strips, 44g each.

    Maxxis Icon EXO 2.2 seated with no levers, no soap, and no sealant. Adding sealant now.

  11. #1361
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    Quote Originally Posted by Surfdog93 View Post
    Mine are on their way as well...... I went pre-built "ready-to-ride"
    That's the way I went, as well (with D881/D882 hubs).
    I am a little unsure about what the minimum tire size is that I should run on these rims. I read somewhere in this thread that we should use at least 2.25 with the wider rim?
    What do you'll think?

  12. #1362
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    Quote Originally Posted by JudgeMorris View Post
    That's the way I went, as well (with D881/D882 hubs).
    I am a little unsure about what the minimum tire size is that I should run on these rims. I read somewhere in this thread that we should use at least 2.25 with the wider rim?
    What do you'll think?
    I had not considered smaller tires for myself.
    Except for my Renegade 1.95 which I tore the sidewall in yesterday, all my tires are 2.2 or larger. That said, I'm going to treat these rims to some brand new RR's....need to order today.

  13. #1363
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    This is about the 26" All mountain rims, how durable are they for hucking and rocky terrain?

  14. #1364
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    Quote Originally Posted by WR304 View Post
    My light-bicycle.com narrow XC 29er carbon rims are still going strong. As at 24 May 2012 they've done 1490 miles with no issues..
    Now THAT is a high mileage training schedule

    Props to the guy a few pages ago who posted the "statistical analysis" that was the funniest thing I've read recently. thanks for the laugh

  15. #1365
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    Only ridden them for a week, so about 10 hours on them so far which is not very much. My sentiments match the rest, they are stiff and seem very solid, a hoot to ride! Built them up with revos and it was a walk in the park compared to olympics and similar rims, they are much stiffer and mine were pretty much round out of the box. If you can live with the risk of receiving bad rims, however small it may be, this is a really good deal.
    Can't imagine riding a soft Stans wheelset again, the instant feedback and precise tracking is addictive :-)

  16. #1366
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    Quote Originally Posted by giantdale View Post
    @WR304, do you perhaps know the weight of your narrow rims, and what are you going to do with the broken derailleur?
    I didn't write the rim weights down anywhere. A little under 400g each I think.

    I replaced the rear derailleur with another SRAM X-0 rear mech, new gear inner, fitted a new chain and trued the rear wheel today. The wheel straightened up ok and the carbon rim appears to be fine.

    Although the chain didn't break yesterday I'll always replace it if there's been a major drivetrain failure or a serious jam. It's safer that way as a weakened chain can superficially look ok but then break without warning, usually under high torque uphill where you don't really want a failure. I've had that happen a few times in the past and it's worth avoiding.

    I'm not totally sure why the derailleur broke at that time. It was about a year old. I was riding along a fairly open woodland track and think that I might have got a stick caught in the drivetrain. It's usually quite obvious when that happens though. I'm putting it down to experience as just one of those things. The main issue was that I was 20 miles from home. I had some Connex chain links but no chain splitter to shorten the chain in order to make it a single speed. I ended up having to ring a friend who lived a few miles away to get a lift home.

    Pictured below: The rear derailleur immediately after it broke. You can see the carbon rim in this picture too.
    Attached Thumbnails Attached Thumbnails (Cheap) Chinese Carbon Rims?-2012_epic_broken_derailleur.jpg  


  17. #1367
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    My build

    Well step one is done, my rims arrived from Light-Bicycle. They were great to deal with and fast, much faster than I was in making the decision. I got two rims for heavier riders, wider 29er versions at 416 and 418 grams.

    They arrived the other day and weighed exactly as expected.

    My other parts are on the way. Build as follows:

    Cannondale Lefty Front Hub (32)
    E13 TRS+ Rear Hub for 12x142 maxle
    Sapim CX-Rays (white)
    DT Swiss Alloy Nipples (green)
    Matte UD Rims.
    Lacing 3x

    These things should be freaking stout when I'm done!

  18. #1368
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    Quote Originally Posted by chairthruster View Post

    Props to the guy a few pages ago who posted the "statistical analysis" that was the funniest thing I've read recently. thanks for the laugh
    The amazing thing is that is how most people utilize and analyse statistics.

    If stats don't give error bars I assume that they are trying to decieve, and generally go against.


    My rims arrived after being held by UK customs for 2.5 weeks!!!!

    They were both sub 400g, slightly worrying as they are supposed to be the clyde proof ones.
    There was one minor fault on a bead section which I was not impressed with.
    However a quick e-mail to Nancy will get one in the post to me, even though she says it is cosmetic. All I need is too give her the serial no on the rim.

    Just wish I had not glued the tyres on before reading that!
    Can't be arsed to peel them off, as it will probably be OK.

    Gone for a few rides, and they are so light it is scary. My bike did not used to be this nimble!

    The additional control I get in the air is impressive. With my old rims, when the bike was in the air it would not move, now I can play.

    All in all I would classify as a positive experience.

    I don't expect things to be perfect at this price, I just do expect them to make up for faults if there are any, and they seem too.
    Why would I care about 150g of bike weight, I just ate 400g of cookies while reading this?

  19. #1369
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    Sent from my Galaxy Nexus using Tapatalk 2

  20. #1370
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    Quote Originally Posted by dhalsey View Post
    Sent from my Galaxy Nexus using Tapatalk 2
    great. thanks!

  21. #1371
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    Hey there Cave Giant, you are gonna have to change your signature now that you got weight weenie wheels!!!

  22. #1372
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    Quote Originally Posted by Adim_X View Post
    Hey there Cave Giant, you are gonna have to change your signature now that you got weight weenie wheels!!!
    If these rims survive the CaveGiant's riding and flying - I think that will be a big for the integrity of the carbon rim product from light-bicycle. Good to have him on board testing the product out...

    BB

  23. #1373
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    Quote Originally Posted by CaveGiant View Post
    Just wish I had not glued the tyres on before reading that!
    Do what now?

  24. #1374
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    Quote Originally Posted by DFYFZX View Post
    Do what now?
    wondered that myself...assumed he meant sealant not tubular?

  25. #1375
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    hey folks, whats the go with bonty rhythm strips vs stans vs anything else? I've got a wider 29 rim on the way and will be converting it tubeless.
    Pivot mach 6!

  26. #1376
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    Quote Originally Posted by Joel RW View Post
    hey folks, whats the go with bonty rhythm strips vs stans vs anything else? I've got a wider 29 rim on the way and will be converting it tubeless.
    The Bonty Rhythm strips fit the AM carbon rims perfectly and make for a nice snug fit. Probably not needed for some tires, but for a secure/safe interface - it's hard to beat.

    Find 'em here: Rhythm strips

    You'll want this version....

    406892 9.99 Black 29 Rhythm Tubeless Rim Strip-Symmetric 622 x 21

    Sealing strips weigh 35g each and valves weigh 8g each

    NoTubes strips weigh more and cost more - so the Bonty strips make economical and weight weenie sense.

    My wheelset with the AM rims weighed 1530g before adding the strips. I really couldn't get the Bonty strips alone to show up as any sort of weight on my digital scale for the pair. I don't know where the 35g come from for each as my pair show up as 0g on my scale (a scale that reads plenty of other lightweight items such as my 18g set of Bontrager foam grips). Yet the strips show up as 0g. Regardless of what the weight penalty is to use them - they make things nice and snug as well as allowing tubeless ready tires to air right up with a floor pump.

    The rims have turned my RIP 9 into about as AM as I want to go (light/sturdy rims, Nobby Nic 2.35 all arounders) and still kept the bike at 28 pounds for a size XL Niner with the beefy tires.

    <a href="http://www.flickr.com/photos/7166535@N05/7288163694/" title="P1010012 by BBcamerata, on Flickr"><img src="http://farm8.staticflickr.com/7071/7288163694_66c39c215f.jpg" width="500" height="296" alt="P1010012"></a>
    Last edited by BruceBrown; 05-28-2012 at 11:28 AM.

  27. #1377
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    Quote Originally Posted by BruceBrown View Post
    If these rims survive the CaveGiant's riding and flying - I think that will be a big for the integrity of the carbon rim product from light-bicycle. Good to have him on board testing the product out...

    BB
    I am 6ft 2', 250 myself. My set is all built, just waiting on my frame and some homebrewed components to finish a pimped out carbon SS. I will let you guys know how they work out. I got the extra carbon in the wheels, but I am pushing over the boundaries. But I ride light, haha

  28. #1378
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    THESE RIMS ARE WAY STIFF! Only one ride down, 16 miles of gravel, pavement and singletrack. I will be submitting a comprehensive review after a few more rides.

  29. #1379
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    Oh boy. I smell a new wheel set for my Yelli Screamy...
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  30. #1380
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    Is there any reason to wait for the (narrower) 21mm inner width rim? Light-Bicycle is currently reworking the design and that's why it's not on their website. The wide rim (23mm inner) can be had at less than 390g, so weight is no longer much of a differentiating factor.
    M

  31. #1381
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    Quote Originally Posted by Motivated View Post
    Is there any reason to wait for the (narrower) 21mm inner width rim? Light-Bicycle is currently reworking the design and that's why it's not on their website. The wide rim (23mm inner) can be had at less than 390g, so weight is no longer much of a differentiating factor.
    This question is too subjective. What do you want performance wise? What width of tires do you plan to run? Most of us seem to be stoked that we can get lightweight wheels that are wide.

  32. #1382
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    Quote Originally Posted by Adim_X View Post
    This question is too subjective. What do you want performance wise? What width of tires do you plan to run? Most of us seem to be stoked that we can get lightweight wheels that are wide.
    Low weight is not subjective. The 21mm inner width rim was ~20g lighter, but now that advantage seems to be narrowed or zeroed. Although we don't know the weight of the new 21mm inner width rim. Effect of rim width may be subjective. I know I won't go back to 19mm inner width rims, but am happy with 21mm. I've never ridden 23mm, so have no experience, thus the question. I typically ride racing ralph 2.1's on a variety of trails from alpine fire roads to really rooty forest trails.
    M

  33. #1383
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    I am currently having a set of the wider 26 inch rims made to be laced up to American Classic disc hubs. I have some Velocity spoke plugs that I plan on running with Bonty rim strips. For spokes I will be using DT Champion 1.8-2.0 gage spokes with red anodised nipples and red AC valve stems. The rims are in 3k matt with the logo looking similar to a mix of Roval and Enve rims. I'll post pictures and ride quality as soon as they're done.

  34. #1384
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    Quote Originally Posted by sbrdude1 View Post
    I am currently having a set of the wider 26 inch rims made to be laced up to American Classic disc hubs. I have some Velocity spoke plugs that I plan on running with Bonty rim strips. For spokes I will be using DT Champion 1.8-2.0 gage spokes with red anodised nipples and red AC valve stems. The rims are in 3k matt with the logo looking similar to a mix of Roval and Enve rims. I'll post pictures and ride quality as soon as they're done.
    No reason to run veloplugs with the Bonty strips unless you just want to add weight.
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  35. #1385
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    Quote Originally Posted by BruceBrown View Post

    The rims have turned my RIP 9 into about as AM as I want to go (light/sturdy rims, Nobby Nic 2.35 all arounders) and still kept the bike at 28 pounds for a size XL Niner with the beefy tires.
    Assuming the frame can take it, would you trust these rims to hit 4' - 6' jumps?

  36. #1386
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    Quote Originally Posted by Dictatorsaurus View Post
    Assuming the frame can take it, would you trust these rims to hit 4' - 6' jumps?
    I have been ~4ft in the air on my Stumpy EVO numerous times with zero issues. If I had bigger jumps to tackle I would not hesitate. They feel amazing in the air and solid when landing.
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  37. #1387
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    Quote Originally Posted by Dictatorsaurus View Post
    Assuming the frame can take it, would you trust these rims to hit 4' - 6' jumps?
    That I cannot answer at the moment. I'm just 5 weeks out from a nasty endo which tore my neck muscles, separated the right shoulder, chipped 2 teeth, cracked a rib, etc... which sort of prevents me from taking the RIP in the air at the moment while I am in healing up mode.

    But I've had no problems on my other similar carbon AM rims (Rovals) on my other bike. In fact, it was a jump at the end of a race that I miscalculated in a moment of cross-eyed sprint to the line or else poor decision making that led to the crash after I was a few feet in the air. In that crash I came down on the front wheel with full force. Hard to tell what happened, but something up front flexed enough to bend my disc brake rotor. I'm pretty sure some of my other wheels (Crests, Flows) would have ended in a big taco with the force I hit, but the carbon rim didn't even blink at the force.

    Based on that and the similarity in performance I feel with the light-bicycles carbon AM rims - I would say they should be available for take off and landing. My shoulder and neck simply couldn't take it at the moment as they are struggling and shouting back at me loud and clear with every small crack in the sidewalk on my morning dog walks - let alone out on the dirt.

  38. #1388
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    For 29" wider carbon rims from light-bike and circus monkey hdw2 32h hubs, i wonder what should be length of the spoke? Can i use sapim laser 260mm ?

  39. #1389
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    Quote Originally Posted by BruceBrown View Post
    That I cannot answer at the moment. I'm just 5 weeks out from a nasty endo which tore my neck muscles, separated the right shoulder, chipped 2 teeth, cracked a rib, etc... which sort of prevents me from taking the RIP in the air at the moment while I am in healing up mode.
    My body started aching just by reading that...Get well soon!

  40. #1390
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    Quote Originally Posted by Ferrozone View Post
    For 29" wider carbon rims from light-bike and circus monkey hdw2 32h hubs, i wonder what should be length of the spoke? Can i use sapim laser 260mm ?
    Having built a bunch of 29er wheels myself, I can tell you that you are looking at spokes in the 290-296mm range. Most of my wheels ended up 290mm on one side, and 292mm on the other, but sometimes 291 and 294mm.

    You really have to measure the hub flanges (diameter and position) and rim ERD carefully and run the numbers through a spoke calculator program. Do a search. There are a bunch of free online spoke calculators. I usually use two different ones and see if they come up with the same numbers before I plunk my cash down for spokes.

    ... and I checked into those Circus Monkey hubs. I'm interested in a set, maybe. But... you really have to measure those flanges yourself. The published drawing of those hubs did not match up to the picture. I emailed the seller on then, and he was all, 'oh, you're right! I'll have to publish the right drawing'. So, I wouldn't trust it without taking my own measuring calipers to them.


    Check out the wheelbuilding page on sheldonbrown.com for some good info.

  41. #1391
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    Quote Originally Posted by pimpbot View Post
    Having built a bunch of 29er wheels myself, I can tell you that you are looking at spokes in the 290-296mm range. Most of my wheels ended up 290mm on one side, and 292mm on the other, but sometimes 291 and 294mm.

    You really have to measure the hub flanges (diameter and position) and rim ERD carefully and run the numbers through a spoke calculator program. Do a search. There are a bunch of free online spoke calculators. I usually use two different ones and see if they come up with the same numbers before I plunk my cash down for spokes.

    ... and I checked into those Circus Monkey hubs. I'm interested in a set, maybe. But... you really have to measure those flanges yourself. The published drawing of those hubs did not match up to the picture. I emailed the seller on then, and he was all, 'oh, you're right! I'll have to publish the right drawing'. So, I wouldn't trust it without taking my own measuring calipers to them.


    Check out the wheelbuilding page on sheldonbrown.com for some good info.
    Thanks for the information but i think this will be much more difficult than i think i will look to sheldonbrown.com. By the way i have ordered circus monkey hubs today and tonight i will make the payment for the rims, i think aproximatley 15-20 days later they would be here. Do you prefer safim laser or dt revo spokes?

  42. #1392
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    Quote Originally Posted by bquinn View Post
    I have been ~4ft in the air on my Stumpy EVO numerous times with zero issues. If I had bigger jumps to tackle I would not hesitate. They feel amazing in the air and solid when landing.
    A six foot gap is not all that big, done smoothly most rims will easily take that since its really not a lot of force. Now the real question is what happens when you come up wrong and back case hard, or come up way too fast and sail 12 feet going all the way over the transition of said 6 foot gap and land really hard. I suspect this may even be survivable for these carbon rims.

    My biggest doubt is running tubeless through rock gardens. Low tire pressure I.e 20 -25 front 30 rear, miscalculation and the rim takes a hit that would pinch a tubed set up and you feel the rim impact a rock not crazy hard but hard enough to feel. My current rim wtb laser disc trail both 26 and 29 on another bike handles this pretty well but the 26" version is just a hair over 500 grams.

    If these things prove to be as tough as a laser disc or other 500 gram conventional wide rim and are 100 grams lighter, have more even spoke tension, and less flex they are major winners and a worthy up grade.

  43. #1393
    ballbuster
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    I think that would not be a problem...

    Quote Originally Posted by Dictatorsaurus View Post
    Assuming the frame can take it, would you trust these rims to hit 4' - 6' jumps?
    ... from what it seems, hitting a big pointy rock or a curb square in the ballz at speed might be a problem, tho.

    I mean, I don't know, but from the one real world field failure I've seen in this thread, it looks like carbon doesn't put up with being hit with all force in a tiny spot like that.

    Then again, I'm not sure aluminum rims fare any better. I've put bad flat spots on my fair share of alloy rims, being 210 pounds, ride rocky stuff, and bunny hop curbs... sometimes missing them.


    Quote Originally Posted by Ferrozone View Post
    Thanks for the information but i think this will be much more difficult than i think i will look to sheldonbrown.com. By the way i have ordered circus monkey hubs today and tonight i will make the payment for the rims, i think aproximatley 15-20 days later they would be here. Do you prefer safim laser or dt revo spokes?
    I've never used Sapim spokes, personally. I have a friend who swears by the X-Rays, but those are like $3 or $4 each.

    I've always used DT Swiss 14/15ga double butted, and on occasion Wheelsmith. Both are solid choices, but I just like the way DT Swiss hourglass tapering looks. I used to use alloy nipples back when I was more of a weight weenie, but I started having issues with breakage and stripping. Alloy saves like 20g per wheel or so, but it is a bit more of a PITA.

  44. #1394
    mnoutain bkie rdier
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    Quote Originally Posted by Dictatorsaurus View Post
    My body started aching just by reading that...Get well soon!
    Ditto. Yikes...get better soon!

  45. #1395
    mnoutain bkie rdier
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    Need input on wheel build...load bearing spacers at nips?

    My wheelbuilder is a pretty respected builder in the San Diego community and has been for a long time fwiw..

    He asked me today if anyone here used "load bearing spacers" on their carbon wheel builds. Essentially, they are brass rings that go over the nipple inside the rim to help evenly load the tension to prevent breaking/cracking of the carbon rim.

    He says that tons of companies (not all) do this including Campy etc...

    I appreciate that he wanted me to ask instead of just proceeding like most guys would w/o checking..

    So..anyone know if these were used or need to be used on the Nancy wide 29er hoopdies??

    IDEAS?? Thanks!

  46. #1396
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    I was planning to use these washers, despite nancy saying they weren't needed. Somehow the washers weren't in my order so pressed for time I build my set without. Interested to hear of people who did use washers, especially the oval sapim ones

  47. #1397
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    Omg omg omg!!!!

    I just got my rims. Dayum. Two weeks from order to doorstep.

    Now, close inspection, weight, measurements and buying a set of spokes to build the rear wheel. I'm waiting for some nipple washers to build the front because I'm just directly replacing another hoop that is 2mm bigger ERD.

    First thing I noticed was that the sidewalls are pretty dang short, like Stan's rims, but not quite that short. They oughta do well in not pinch flatting, unlike my Bontrager Mustang rim brake rims.

    Oh, and I need to score some 36pt star ratchets for a Hugi 98 hub. No way I can stay sane with this 18 POE crap.
    Last edited by pimpbot; 05-29-2012 at 04:22 PM.

  48. #1398
    beer is good
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    I don't think the oval Sapim washers will fit through the nipple holes in the inner wall of this rim as the washers are fairly wide.
    Steve
    "looking California, feeling Minnesota"

  49. #1399
    ballbuster
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    BTW....

    395g and 393g

    I inspected the bead and bed of the rim. There are a couple of very minor flaws, if I were looking for nits to pick, but I don't think they will interfere with the bead seal if I go tubeless, or will be seen once the tire is on.... or be seen at all without micrometer eyes.

    *edit*

    Puurrrdy!

    3k weave

    <a href="https://picasaweb.google.com/lh/photo/beHk5cyBFLwZhK4MmZFf6l63x_oLb9GJ1QwKV3xvQ2M?feat=e mbedwebsite"><img src="https://lh4.googleusercontent.com/-gqz8NkqqOs4/T8WOTQwBkyI/AAAAAAAAefI/4tlGGZnjn-o/s800/IMG_3489.JPG" height="600" width="800" /></a>

    And much wider than my Crest rim (and lighter... and stiffer, I hope)

    <a href="https://picasaweb.google.com/lh/photo/htL3hFar6d9EepN5tTrLSF63x_oLb9GJ1QwKV3xvQ2M?feat=e mbedwebsite"><img src="https://lh5.googleusercontent.com/-0EFuYok0MQw/T8WOUPgnmOI/AAAAAAAAefY/882JMv_vhiM/s800/IMG_3491.JPG" height="600" width="800" /></a>
    Last edited by pimpbot; 05-29-2012 at 09:15 PM.

  50. #1400
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    Quote Originally Posted by bikerjay View Post
    A six foot gap is not all that big, done smoothly most rims will easily take that since its really not a lot of force. Now the real question is what happens when you come up wrong and back case hard, or come up way too fast and sail 12 feet going all the way over the transition of said 6 foot gap and land really hard. I suspect this may even be survivable for these carbon rims.

    My biggest doubt is running tubeless through rock gardens. Low tire pressure I.e 20 -25 front 30 rear, miscalculation and the rim takes a hit that would pinch a tubed set up and you feel the rim impact a rock not crazy hard but hard enough to feel. My current rim wtb laser disc trail both 26 and 29 on another bike handles this pretty well but the 26" version is just a hair over 500 grams.

    If these things prove to be as tough as a laser disc or other 500 gram conventional wide rim and are 100 grams lighter, have more even spoke tension, and less flex they are major winners and a worthy up grade.
    I raced on these rims with specialized sworks renegade 1.8's. Several shots to the rims with no apparent damage. These suckers are tough.

    I have put approx 200 miles on these wheels and still love them. I actually prefer these to my roval control SL carbon wheels. These seem to have less of a problem with rolling with the wider rims. I will continue to try to destroy these by racing with tiny tires and see what happens.

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