Page 1 of 3 123 LastLast
Results 1 to 50 of 144
  1. #1
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210

    New question here. B+ PRIME (or Phantom). Let's talk about it.

    Hi Prime community.
    I was browsing over B+ trend, and of course I started to figure how my Prime would come out with 650b 40mm large rims and 2.8/3.0 airbags.

    Has anybody already attempted or started thinking about it ?
    Last edited by filbike; 11-20-2014 at 11:12 AM.

  2. #2
    FM
    FM is offline
    mtbr member
    Reputation: FM's Avatar
    Join Date
    Apr 2003
    Posts
    9,286
    Oh yes! I am all over this.
    Light-bicycle.com has 38mm (ext) wide carbon rims releasing soon, I am just waiting for that.

    To be honest.... if I don't like it... the wheels will go on something designed for 27.5".

  3. #3
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Talkin' about rims, NEXTIE already sells a 40 mm carbon.

    I don't have another bike, so of I don't like I have to sell.

  4. #4
    AOK
    AOK is offline
    mtbr member
    Reputation: AOK's Avatar
    Join Date
    Jan 2004
    Posts
    1,879

    B+ PRIME (or Phantom). Let's talk about it.

    Quote Originally Posted by filbike View Post
    Talkin' about rims, NEXTIE already sells a 40 mm carbon.
    Derby makes a 40mm 27.5 rim too

  5. #5
    beater
    Reputation: evasive's Avatar
    Join Date
    Feb 2005
    Posts
    4,724

    B+ PRIME (or Phantom). Let's talk about it.

    [fly on the wall]
    "Back off, man. I'm a scientist." - Dr. Peter Venkman

    Riding in Helena? Everything you need to know, right here.

  6. #6
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    20,354
    Subbed in, interested in B+, but more so for the rigid. but if I get some, of course I'll try it on the Phantom/Prime. But just from my measurements, don't think you'll have any trouble what so ever running them on either the Prime or Phantom. 29+ might even fit, but chainstay length could be an issue, but not width clearance.
    One day your life will flash before your eyes, will it be worth watching??
    MTB Barbados
    My Phantom pics

  7. #7
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Yeah, chainstays would be longer than a B+ specific frame, but this won't change anything in my ride.
    my concern was about tire clearance, but with measured 8.2 cm between stays, for sure I can use the 2.8 wtb trailblazers given at 7.2 cm section, or maybe some fattyer tires.
    The 727 mm reported diameter of trailblazers will drop the BB 1 cm (at 33.5 cm low setting ), as overall diameter difference between my 29er maxxis 2.3 DHR is -2 cm.
    Last edited by filbike; 11-22-2014 at 02:47 PM.

  8. #8
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by AOK View Post
    Derby makes a 40mm 27.5 rim too
    ...at twice $$

  9. #9
    FM
    FM is offline
    mtbr member
    Reputation: FM's Avatar
    Join Date
    Apr 2003
    Posts
    9,286
    LB38mm wheels on the way...

    These tires are expensive!
    I wonder if the Vee trax fatty 27.5x3.25 would fit?

  10. #10
    mtbr member
    Reputation:
    Join Date
    Nov 2007
    Posts
    59
    Wow, I missed the boat on this idea! I was eyeing up the Salsa Bucksaw because I like the idea of big tires at low psi, never even thought of 650B with "sort of" fat tires. Was just thinking of replacing my EThirteen rims with something wider and going with 2.5" tires but I like this idea even better. Can't wait to see what the results are!

  11. #11
    mtbr member
    Reputation:
    Join Date
    Jan 2007
    Posts
    2,050
    I'll be interested to hear how you guys get on with this, please post photos of clearance and ride reports if you try it. Cheers
    Banshee Bikes Designer
    www.bansheebikes.com
    Banshee Blog

  12. #12
    Hard funkin´ Kraut
    Reputation: NoStyle's Avatar
    Join Date
    May 2005
    Posts
    858
    Unfortunately I´m out of budget for new parts right now, but would like to try 26"+ semi-fat 2.8 to 3.0 tires on my Spitfire.
    According to a chart of an article on mtb-news.de the 26"+ diameter is almost identical to a 650B 2.3 or 2.4 tire ...
    Attached Thumbnails Attached Thumbnails B+ PRIME (or Phantom). Let's talk about it.-tire-sizing.jpg  


  13. #13
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by builttoride View Post
    I'll be interested to hear how you guys get on with this, please post photos of clearance and ride reports if you try it. Cheers
    maybe new B+ dropouts will be nice feature on our bikes.

  14. #14
    Oh, I've GOT bike money
    Reputation: JACKL's Avatar
    Join Date
    Sep 2011
    Posts
    1,323
    I mounted up a 29x3.0 Knard / Flow Ex on my Prime; pics are on page 59 of the Prime production thread. Based on that, I'd say B+ could definitely work with the right wheel / tire. Also, we've got adjustable dropouts so the BB height can be raised if needed.

    With generous tire clearance and adjustable dropouts, these bikes are very versatile. When tire manufacturers finally start producing 29x2.7ish tires, I'm looking forward to trying them on my Prime.

  15. #15
    mtbr member
    Reputation:
    Join Date
    Jan 2007
    Posts
    2,050
    Quote Originally Posted by JACKL View Post
    I mounted up a 29x3.0 Knard / Flow Ex on my Prime; pics are on page 59 of the Prime production thread. Based on that, I'd say B+ could definitely work with the right wheel / tire. Also, we've got adjustable dropouts so the BB height can be raised if needed.

    With generous tire clearance and adjustable dropouts, these bikes are very versatile. When tire manufacturers finally start producing 29x2.7ish tires, I'm looking forward to trying them on my Prime.
    Oh thanks, I missed that. You could run '650b' dropouts to create tire more clearance if you did want to run this setup in mud and slush.
    Banshee Bikes Designer
    www.bansheebikes.com
    Banshee Blog

  16. #16
    Hard funkin´ Kraut
    Reputation: NoStyle's Avatar
    Join Date
    May 2005
    Posts
    858
    Quote Originally Posted by filbike View Post
    maybe new B+ dropouts will be nice feature on our bikes.
    My question would be: Where there any differences to the current 650B-dropouts? These ones lengthen the stays about 10mm ...

    My other question would be: Is there a market and demand for 29+ tires? I can imagine that 650b (in general) and 26+ and B+ could gain popularity and sales in the near future. Maybe not for the racers among us, but for the all-day-explorers ... ?!?

  17. #17
    mtbr member
    Reputation:
    Join Date
    Jan 2007
    Posts
    2,050
    Quote Originally Posted by NoStyle View Post
    My question would be: Where there any differences to the current 650B-dropouts? These ones lengthen the stays about 10mm ...
    The dropouts have not changed, so yeah, the clearance would increase by approximately 10mm.
    Banshee Bikes Designer
    www.bansheebikes.com
    Banshee Blog

  18. #18
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    20,354

    1/2 Phat Phantom w/ 29+ tyres

    Curious to all the folks interested in these + tyres for FS as to the why? Maybe I'm missing something, but the Prime/Phantom already have fantastic suspensions, pair that with any of the available "normal" 29er rubber already available up to real 2.5" tyres and you've got an awesome machine, can't see the need or want for so much bigger. Current tyre setup, WW LT rear, 2.35" Ikon front in dry conditions and loving it, combo is very fast, but the 2.35" Ikon really does offer a lot of grip for how fast it is. Have my 2.4" Chunky Monkey for the wet or a more aggressive setup.

    I did a check this AM, and the Phantom will clear a Maxxis Chronicle with the drop outs set to the slackest position, i.e. longest chainstay length, but clearance would only be for absolutely smooth dirt trails with no debri to get caught up in the tyre, at least IMHO. Also the F34 has clearance, but wouldn't trust in on anything more than smooth dirt with no debri to get lodged between the tyre and arch.

    B+ PRIME (or Phantom). Let's talk about it.-dscn0837_web.jpgB+ PRIME (or Phantom). Let's talk about it.-dscn0831_web.jpgB+ PRIME (or Phantom). Let's talk about it.-dscn0827_web.jpgB+ PRIME (or Phantom). Let's talk about it.-dscn0834_web.jpgB+ PRIME (or Phantom). Let's talk about it.-dscn0828_web.jpg
    Last edited by LyNx; 11-25-2014 at 08:18 AM. Reason: to amend title
    One day your life will flash before your eyes, will it be worth watching??
    MTB Barbados
    My Phantom pics

  19. #19
    Hard funkin´ Kraut
    Reputation: NoStyle's Avatar
    Join Date
    May 2005
    Posts
    858
    Quote Originally Posted by builttoride View Post
    The dropouts have not changed, so yeah, the clearance would increase by approximately 10mm.
    Dear Keith, yes, that´s why I questioned some possible "+" dropouts. Can´t imagine a significant difference versus the current 650B-dropouts, except being longer than 10mm for 4. tires ... ?

  20. #20
    Hard funkin´ Kraut
    Reputation: NoStyle's Avatar
    Join Date
    May 2005
    Posts
    858
    Quote Originally Posted by LyNx View Post
    Curious to all the folks interested in these + tyres for FS as to the why? ...
    Good question!
    I have no (1/2) fat-tire-experience myself, but from what I´ve read those tires offer more traction/grip and better rolling-resistance. The right air-pressure seems to be the key. Smaller volume-tires should have faster rolling, but these big ones would make for a better all-weather/all-terrain usage ...

  21. #21
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    20,354
    Well honestly my interest in the "+" market is for my rigid Karate Monkey or just rigid in general, but just toolin about on the Phantom with those tyres this AM in my drive, they felt sluggish and overkill to me, didn't inspire me to want to leave them on and go give them a try in dirt. In contrast to on the rigid where they feel fantastic, unfortunately the Monkey won't fit 29+ in the rear, so only on a 2.4" Ardent. Currently the 29+ are on the WTB ST i25s and tyre profile is very round, curious what will happen when I get the Velocity Dually 45mm external amd 39mm internal rims built and them mounted up.

    Quote Originally Posted by NoStyle View Post
    Good question!
    I have no (1/2) fat-tire-experience myself, but from what I´ve read those tires offer more traction/grip and better rolling-resistance. The right air-pressure seems to be the key. Smaller volume-tires should have faster rolling, but these big ones would make for a better all-weather/all-terrain usage ...
    One day your life will flash before your eyes, will it be worth watching??
    MTB Barbados
    My Phantom pics

  22. #22
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by NoStyle View Post
    My question would be: Where there any differences to the current 650B-dropouts? These ones lengthen the stays about 10mm ...

    My other question would be: Is there a market and demand for 29+ tires? I can imagine that 650b (in general) and 26+ and B+ could gain popularity and sales in the near future. Maybe not for the racers among us, but for the all-day-explorers ... ?!?
    I was talking about having shorter dropouts for 29er and B+ so to reduce chainstay length. (possible with less wheel diameter)
    may be Rune's or Spitfire's 26er dropouts would shorten chainstay as well, but I don't know how they compare with prime's dropouts

  23. #23
    FM
    FM is offline
    mtbr member
    Reputation: FM's Avatar
    Join Date
    Apr 2003
    Posts
    9,286
    Quote Originally Posted by LyNx View Post
    Curious to all the folks interested in these + tyres for FS as to the why?
    Just to try it
    decrease overall wheel diameter (sweet spot between 27.5 and 29?) without a new frame/fork
    traction at 15psi

    Quote Originally Posted by LyNx View Post
    I did a check this AM, and the Phantom will clear a Maxxis Chronicle
    Thanks for the pics. Can you please revise your post to show that these are 29+ tires? Other 27+ threads have already gotten pretty confusing with random 29+ tire references and pictures.

    The parts of this set-up you didn't like could be related to the 29+ wheelsize- certainly the clearance would work with 27+ and the wheel would spin up faster. Part of the allure of 27+ is that it could be nearly a wash with 29, in terms of diameter and weight.

  24. #24
    beater
    Reputation: evasive's Avatar
    Join Date
    Feb 2005
    Posts
    4,724
    Quote Originally Posted by LyNx View Post
    Curious to all the folks interested in these + tyres for FS as to the why?
    Lean a fatbike over through a fast corner and you'll have a 'wow' moment. Then imagine it might be possible to capture some of that with wheels that aren't quite as ponderous, in a frame I already have, and as you point out, has great suspension characteristics. That's is why I'm watching this develop with some interest. I'm still recovering from a period of being a single income household and have to pick my battles, but tire selection will likely improve as this ferments a while.
    "Back off, man. I'm a scientist." - Dr. Peter Venkman

    Riding in Helena? Everything you need to know, right here.

  25. #25
    Hard funkin´ Kraut
    Reputation: NoStyle's Avatar
    Join Date
    May 2005
    Posts
    858
    Quote Originally Posted by filbike View Post
    I was talking about having shorter dropouts for 29er and B+ so to reduce chainstay length. (possible with less wheel diameter)
    may be Rune's or Spitfire's 26er dropouts would shorten chainstay as well, but I don't know how they compare with prime's dropouts
    I get what you are thinking of.
    Well, as far as I know the (short = 26" = 142/150x12) dropouts work for every KS-Link frame, including Rune, Spitfire, Darkside, Prime and Phantom. The (10mm longer) 650B dropouts are mainly for the Rune, Spitfire and Darkside to convert them for the midsize-wheels, but can be used on the Prime and Phantom too, if you like longer CS. I´m not sure if shorter than the 26 dropouts give enough tire-clearance for B+ wheels/tires in the Prime and Phantom rear. Take a closer look to my earlier posted chart. The diameter of a 26+ is almost identical to a 650B while a 650B+ is almost identical to a 29 ...

  26. #26
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    20,354
    Yup, so absolutely get that.

    Quote Originally Posted by FM View Post
    Just to try it.
    Reply title revised to state 29+ tyres. Can see your point with the 650B+, somewhere between 650B and 29" normal tyres and running one of the 2.7" would give a bit less of the fat bike feel. Pics just show how much clearance the Phantom has, so if they come out with say a 2.7" 29er tyre it could fit.
    Only place I'd imagine I'd be looking at these for an FS would be in a place where there's lots of sand/silty, lose soil where suspension doesn't help, only big, floaty tyres.

    Quote Originally Posted by FM
    Thanks for the pics. Can you please revise your post to show that these are 29+ tires? Other 27+ threads have already gotten pretty confusing with random 29+ tire references and pictures.

    The parts of this set-up you didn't like could be related to the 29+ wheelsize- certainly the clearance would work with 27+ and the wheel would spin up faster. Part of the allure of 27+ is that it could be nearly a wash with 29, in terms of diameter and weight.
    Never ridden a fatbike, not a chance to demo one down here unless I bring one in, so like FM, this is a cheap and easy thing to try to see what "fat" feels like. Maybe I'll give it a go on the trails, but it just felt heavy and cumbersome to me on the Phantom, but felt perfectly right on the Monkey. Could be having F&R 29+ on the Phantom and feeling the weight to spin up as compared to the weight/spin up of the 2.4" Ardent, although will say the Chronicle didn't feel (in hand) like it weighed much more than the my Ardent, think it's more down to the contact patch being so much bigger.
    Quote Originally Posted by evasive View Post
    Lean a fatbike over through a fast corner and you'll have a 'wow' moment. Then imagine it might be possible to capture some of that with wheels that aren't quite as ponderous, in a frame I already have, and as you point out, has great suspension characteristics. That's is why I'm watching this develop with some interest. I'm still recovering from a period of being a single income household and have to pick my battles, but tire selection will likely improve as this ferments a while.
    One day your life will flash before your eyes, will it be worth watching??
    MTB Barbados
    My Phantom pics

  27. #27
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    20,354
    Yup, as far as I aware, all the "normal" drop outs swap between all the KS-link frames, just the 650B are different/longer. Liking that idea NS, could be interesting if someone wanted the float of the 29+ tyres on a Prime or Phantom. Going by what I've read a 650B+ tyre will be nearly 29" in diameter, so not sure how much shorter you could honestly make the drop outs/stays to accommodate that small savings.

    Quote Originally Posted by NoStyle View Post
    Well, as far as I know the (short = 26" = 142/150x12) dropouts work for every KS-Link frame, including Rune, Spitfire, Darkside, Prime and Phantom. The (10mm longer) 650B dropouts are mainly for the Rune, Spitfire and Darkside to convert them for the midsize-wheels, but can be used on the Prime and Phantom too, if you like longer CS. I´m not sure if shorter than the 26 dropouts give enough tire-clearance for B+ wheels/tires in the Prime and Phantom rear. Take a closer look to my earlier posted chart. The diameter of a 26+ is almost identical to a 650B while a 650B+ is almost identical to a 29 ...
    One day your life will flash before your eyes, will it be worth watching??
    MTB Barbados
    My Phantom pics

  28. #28
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by NoStyle View Post
    ........ I´m not sure if shorter than the 26 dropouts give enough tire-clearance for B+ wheels/tires in the Prime and Phantom rear. Take a closer look to my earlier posted chart. The diameter of a 26+ is almost identical to a 650B while a 650B+ is almost identical to a 29 ...
    If WTB Trailblazers are 727mm in diameter as reported, the
    20+ mm less than my maxxis 2.3 dhr is not really almost the same as 29er! That's room to play with.... like 10mm shorter dropouts.
    I don't have experience to know how 10 mm less in chainstay length would change bike character, I probably wouldn't even feel it.
    It was just about thinking perfect fit for every wheel size.
    big + for banshee

  29. #29
    mtbr member
    Reputation:
    Join Date
    Feb 2007
    Posts
    2,911
    Quote Originally Posted by filbike View Post
    If WTB Trailblazers are 727mm in diameter as reported, ...
    They're not, though. Trailblazers are about 710mm in diameter.

  30. #30
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    20,354
    How about the width, have an accurate measurement on that?
    Quote Originally Posted by craigsj View Post
    They're not, though. Trailblazers are about 710mm in diameter.
    One day your life will flash before your eyes, will it be worth watching??
    MTB Barbados
    My Phantom pics

  31. #31
    mtbr member
    Reputation:
    Join Date
    Feb 2007
    Posts
    2,911
    B+ PRIME (or Phantom). Let's talk about it.-goma2.jpgB+ PRIME (or Phantom). Let's talk about it.-goma1.jpg
    Quote Originally Posted by LyNx View Post
    How about the width, have an accurate measurement on that?
    Yes, the bead to bead measurement is 165mm and it stretched to 168mm after a few weeks at pressure. On a P35 it measured 64mm (shown) and 66mm on a Nextie 40mm. It is rated at 67mm which it would meet or exceed on a Dually or 50mm rim. It never reaches "2.8" which appears to be its name, not its rated size. It's a 2.5 - 2.7 tire depending on rim.

    It's shown next to a Goma 2.4 29er. The Goma is 160mm bead to bead and is 2mm narrower and 2mm shorter on the same rim. There is a 34mm difference in diameter regardless of rim size. This is true for the Trail King 2.4 and WTB Trail Boss 2.4 as well.

  32. #32
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    This is not nearly as a 29er diameter, I'm gonna wait beefier tires.

  33. #33
    mtbr member
    Reputation:
    Join Date
    Feb 2007
    Posts
    2,911
    Quote Originally Posted by filbike View Post
    This is not nearly as a 29er diameter, I'm gonna wait beefier tires.
    Dave Turner said the same thing in the King Kahn thread:

    "BB will be 13.3" with 120 Bluto and 4" tire. So, a 29 tire on 622 BSD rim will work! The WTB 27.5x2.75 is notably shorter than even an XC 29r OD at tread so... no."

    There's a lot of misinformation regarding this tire, it is not a "plus" sized tire at all and it comes nowhere close to a 29er in diameter.

  34. #34
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Well, if TBs are definitively not as 29er, on the other side seems that VEETRAX 3,25 B+ are really almost like 29ers...but.... will hardly fit Prime mounted on a 35mm channel rim, as you'll have a mere 1mm side clearance.
    Better would be with narrower rims but you probably end up with side rolling issues.
    Worst thing absolutely won't fit my pike.

    Here's what stated on:
    twentynineinches.com
    Vee Tire Trax Fatty 27.5″ X 3.25″ Tires: Quick Review

    ...Unfortunately I have found my other attempts with different forks to not be as successful. Neither the ROCK SHOX, FOX, or MAGURA fit the Trax Fatty B+ tire......

    ....Initially for this test I used the broad IBIS 741 wheels, the same as I rode for the Trailblazer test. The dimensions for the Trax Fatty on this rim (35 mm inner dimension) revealed that the carcass and tread width are absolutely identical on this tire at 79 mm (@ 1.25 bar tire pressure ). Not quite the advertised 3.25″ (or 82.6 mm) , but on a properly wide rim of 50-60mm, it may well come to the desired dimension. On the slightly narrower AMERICAN CLASSIC Wide Lightning rim the tire comes in at a smaller 76 mm......

    Full review HERE

  35. #35
    mtbr member
    Reputation:
    Join Date
    Feb 2007
    Posts
    2,911
    Quote Originally Posted by filbike View Post
    Well, if TBs are definitively not as 29er, on the other side seems that VEETRAX 3,25 B+ are really almost like 29ers...but.... will hardly fit Prime mounted on a 35mm channel rim, as you'll have a mere 1mm side clearance.
    Better would be with narrower rims but you probably end up with side rolling issues.
    I agree, the difference between 650B and 29er is simply too great for a drop-in to work without compromise. We need to see some B+ options in the 3" range.

  36. #36
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by craigsj View Post
    I agree, the difference between 650B and 29er is simply too great for a drop-in to work without compromise. We need to see some B+ options in the 3" range.
    yeah, let's see what new VTF or panaracer 3,0 tires look like.

  37. #37
    FM
    FM is offline
    mtbr member
    Reputation: FM's Avatar
    Join Date
    Apr 2003
    Posts
    9,286
    Quote Originally Posted by craigsj View Post
    I agree, the difference between 650B and 29er is simply too great for a drop-in to work without compromise. We need to see some B+ options in the 3" range.
    Perhaps, but the Prime has a few tricks up it's sleeve that make this more viable than it would be on other bikes. The banshee prime geometry is based off a 546mm fork, basically a 140 fox32 or a 150 pike. But a 160 fork feels great with the slack setting. Now, combine the 160 fork with the drop-outs in the mid or steep setting, and your BB could be 14" with standard 29" tires. So with those settings, losing some wheel diameter would get the BB down to proper height, and the angles would still be pretty much as designed. The tire clearance on the Prime is also perfect for these huge tires.

    So on paper, it looks like it would work perfectly. Has anyone actually ridden this set-up though? Doesn't seem like it.

    I'm not feeling the love for the tread on the WTB tires, for our local conditions. And at $100 a tire... yowch.

    I had actually ordered up some wheels to try this, but I am going to put them on a spitfire instead

  38. #38
    mtbr member
    Reputation:
    Join Date
    Feb 2007
    Posts
    2,911
    Quote Originally Posted by FM View Post
    I'm not feeling the love for the tread on the WTB tires, for our local conditions. And at $100 a tire... yowch.
    I agree regarding the Trailblazer. It seems "designed" for the kind of riding that doesn't even justify a larger tire IMO, that being lots of light trail and paved surfaces.

    Of course, it's not really larger anyway. At 165mm bead-to-bead, it's only 5mm larger than several 2.4" tires available from WTB and others (Geax and Conti that I know of). Their Breakout is 2.5 as well and is almost certainly the same casing size but 2 ply. Several options basically the same size once you put them on a 50mm rim.

    I've also built a wheel to experiment with but only a rear in my case. I won't have a Prime, though, until February. If + works well at all, I'll be curious whether 29+ or B+ turns out better. Without true 3" B+ tires I think the question is moot.

  39. #39
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by craigsj View Post
    I agree regarding the Trailblazer. It seems "designed" for the kind of riding that doesn't even justify a larger tire IMO, that being lots of light trail and paved surfaces.

    Of course, it's not really larger anyway. At 165mm bead-to-bead, it's only 5mm larger than several 2.4" tires available from WTB and others (Geax and Conti that I know of). Their Breakout is 2.5 as well and is almost certainly the same casing size but 2 ply. Several options basically the same size once you put them on a 50mm rim.

    I've also built a wheel to experiment with but only a rear in my case. I won't have a Prime, though, until February. If + works well at all, I'll be curious whether 29+ or B+ turns out better. Without true 3" B+ tires I think the question is moot.

    As for 29+ I dare say Prime tire clearance, supposing to use Maxxis Chronicles, is going to be on the short side or a no go, unless you change the dropouts with 27,5 model, that up in the thread are reported as swappable on every KS link swingarm. Just keep an eye on side clearance tho.
    Maybe Keith will chime in and confirm.

  40. #40
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    20,354
    You did look at my pics right? The Chronicle/29+ tyre fits in the Phantom with the drop outs in the slack setting, i.e. the longest chainstay length. Phantom and Prime have the same room in there rear tris. Clearance is not huge, but definitely rideable in the dry.
    Quote Originally Posted by filbike View Post
    As for 29+ I dare say Prime tire clearance, supposing to use Maxxis Chronicles, is going to be on the short side or a no go, unless you change the dropouts with 27,5 model, that up in the thread are reported as swappable on every KS link swingarm. Just keep an eye on side clearance tho.
    Maybe Keith will chime in and confirm.
    One day your life will flash before your eyes, will it be worth watching??
    MTB Barbados
    My Phantom pics

  41. #41
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by LyNx View Post
    You did look at my pics right? The Chronicle/29+ tyre fits in the Phantom with the drop outs in the slack setting, i.e. the longest chainstay length. Phantom and Prime have the same room in there rear tris. Clearance is not huge, but definitely rideable in the dry.
    Sorry, I didn't remember you posted about Chronicles.
    good to know then, sure is a tight fit but really usable in dry conditions, 27,5 dropouts will do the job in muddier times if having enough fork clearance.
    Last edited by filbike; 12-15-2014 at 01:58 AM.

  42. #42
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    @LyNx
    Would you please tell me the maximum diameter of the chronicles at max suggested pressure ? I'm just curious to know if they really fit my RS Pike.

  43. #43
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    20,354
    Best I can give you is on an ST i25 rim @ about 15 PSI and get a smidge over 29 7/8" or 759mm.


    Quote Originally Posted by filbike View Post
    @LyNx
    Would you please tell me the maximum diameter of the chronicles at max suggested pressure ? I'm just curious to know if they really fit my RS Pike.
    One day your life will flash before your eyes, will it be worth watching??
    MTB Barbados
    My Phantom pics

  44. #44
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Thanks LyNx,
    wow!!! 15psi (at rear I suppose) it's a really low.
    I thought if I mounted the chronicles I'd have inflated at 20 psi min.
    But as far as I know you are a big guy like me, so if I eventually give 29+ a try, I think I'd love such low psi... and on wider rims you could go even at lower pressure.
    Last edited by filbike; 12-17-2014 at 01:43 AM.

  45. #45
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    20,354
    Actually no, there's nothing "big" about me, I am tall, but barely 180lbs geared to ride. This is just on a rim since I don't actually have it mounted up on a wheel right now, trying another. 15 PSI is what I use for the front using a Topeak Jo Blow guage and actually quite high, even for the rear according to most, but this is my first time trying this low pressure game, so taking it easy and conservatively at first.

    Quote Originally Posted by filbike View Post
    Thanks LyNx,
    wow!!! 15psi (at rear I suppose) it's a really low.
    I thought if I mounted the chronicles I'd have inflated at 20 psi min.
    But as far as I know you are a big guy like me, so if I eventually give 29+ a try, I think I'd love such low psi... and on wider rims you could go even at lower pressure.
    One day your life will flash before your eyes, will it be worth watching??
    MTB Barbados
    My Phantom pics

  46. #46
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by LyNx View Post
    Actually no, there's nothing "big" about me, I am tall, but barely 180lbs geared to ride. This is just on a rim since I don't actually have it mounted up on a wheel right now, trying another. 15 PSI is what I use for the front using a Topeak Jo Blow guage and actually quite high, even for the rear according to most, but this is my first time trying this low pressure game, so taking it easy and conservatively at first.
    Well, I'm 15 lbs more, geared, and in worst case i'd go at max suggested pressure. That's anyway 10 psi less than my actual ride.
    I didn't immediately consider 29+ because I supposed there wasn't enough diameter room on the frame but now I'm discovering that real limit is fork. According to your measuring there's 2-3 mm clearance on the Pike, and you cannot put different dropouts on that.
    Last edited by filbike; 12-18-2014 at 01:59 AM.

  47. #47
    Formerly PaintPeelinPbody
    Reputation: PHeller's Avatar
    Join Date
    Dec 2012
    Posts
    1,623
    I'm curious, did anyone ever measure the width of the rear chainstays at both 14.25" (B+) from the axle and 15" (29+)?
    GIS/GPS Pro using ArcFM for Utility Mapping - Always willing to connect with other MTBers in the industry.

  48. #48
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by PHeller View Post
    I'm curious, did anyone ever measure the width of the rear chainstays at both 14.25" (B+) from the axle and 15" (29+)?
    My rough check gave me 82mm at B+ size.
    Last edited by filbike; 02-12-2015 at 02:45 AM.

  49. #49
    Formerly PaintPeelinPbody
    Reputation: PHeller's Avatar
    Join Date
    Dec 2012
    Posts
    1,623
    Is that both at the chainstay and seatstay? 82mm would be wide enough to fit a 3.25" VTF on a wide rim, and then some!

    Quote Originally Posted by 06HokieMTB View Post
    GIS/GPS Pro using ArcFM for Utility Mapping - Always willing to connect with other MTBers in the industry.

  50. #50
    mtbr member
    Reputation: filbike's Avatar
    Join Date
    Mar 2007
    Posts
    210
    Quote Originally Posted by PHeller View Post
    Is that both at the chainstay and seatstay? 82mm would be wide enough to fit a 3.25" VTF on a wide rim, and then some!
    after accurate check, side clearance on my prime is 81 mm at both seatstay and chainstay

    For a safe ride in dry conditions I wouldn't go wider than a 75 mm tyre with well dished and trued wheel.

    I think 3.35 VTF is a no go on prime with wide rims, but also is a no go on sub 35mm ID rims for other reasons.
    Last edited by filbike; 02-13-2015 at 03:50 AM.

Page 1 of 3 123 LastLast

Similar Threads

  1. 13' or 14' prime???
    By dlc in forum Banshee Bikes
    Replies: 12
    Last Post: 09-05-2013, 09:33 PM
  2. medium Prime ?
    By client_9 in forum Banshee Bikes
    Replies: 0
    Last Post: 09-01-2013, 09:37 AM
  3. Prime durability
    By Sock Monkey in forum Banshee Bikes
    Replies: 5
    Last Post: 12-04-2012, 08:11 AM
  4. Roaring Creek is Prime, I tell you, Prime
    By bear in forum Pennsylvania
    Replies: 8
    Last Post: 06-12-2011, 02:02 PM
  5. prime/
    By lawnbike in forum Banshee Bikes
    Replies: 2
    Last Post: 04-26-2011, 11:50 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •