26" wheel in 27.5" fork

PB Forum :: 27.5/650b
26" wheel in 27.5" fork
Author Message
flag or2baja
Posted: Sep 4, 2015 at 18:01 Quote
I am interested in doing the same thing. Take everyone off my sc chameleon get a new hardtail 650b and fork, run my 26" wheels til it's time to upgrade.
flag Imspecyized
Posted: Oct 7, 2015 at 21:34 Quote
I put a 27.5 Fox 36 RC2 170mm lowered to 160mm on my 26" wheeled Specialized Enduro. I put my 26" wheels on and have been riding it for a month around Squamish. It steers a little quicker but I haven't had any issues with the bikes handling at all.

If your buying a new Fox 36 get the 170mm model as it can be lowered or raised but the 160mm model is fixed height.
flag bfm-team
Posted: Oct 9, 2015 at 3:18 Quote
Imspecyized wrote:
I put a 27.5 Fox 36 RC2 170mm lowered to 160mm on my 26" wheeled Specialized Enduro. I put my 26" wheels on and have been riding it for a month around Squamish. It steers a little quicker but I haven't had any issues with the bikes handling at all.

If your buying a new Fox 36 get the 170mm model as it can be lowered or raised but the 160mm model is fixed height.

I totally agree with Imspecyized, get the 170mm model.
I have been running it this season with either 26 or 27,5 wheels.
It is nippier with 26 and I can climb better, with 27 is more stable going down.

Anyway, the 36 is the most versatile fork as you can switch wheels, axles & travel.

Keep on ridin' !
flag bfm-team
Posted: Oct 9, 2015 at 3:20 Quote
I am interested in a Transition Patrol frame to run it with 26 wheels for my wife.

Any thoughts, as the Patrol is very close to the Suppressor ?
flag Mildred
Posted: Oct 10, 2015 at 13:46 Quote
I did this to try to future proof my fork buy.

Nicolai helius with pike 160 650b is virtually no different axle to crown as my 170mm 55rc3ti, and no measurable difference whatsoever at the bottom bracket.

I then decided to try 650b wheelset on the bike, which to my surprise fit perfectly, without any interference anywhere throughout its compression and only altered the bottom bracket height by 1cm. This is measured with 26x2.35 maxis high roller versus 27.5x2.1 Specialized ground control (which is a fairly high volume tyre for its measurement).
flag Mildred
Posted: Oct 10, 2015 at 13:50 Quote
http://i600.photobucket.com/albums/tt82/mark2404/6E369E64-F095-477F-BBB0-D07FEE89094F_zps9wwhnlzd.jpg
flag chickendog
Posted: Oct 19, 2015 at 8:13 Quote
I have a 26 inch bike and I need a new fork.I will likely get a 650b bike in the next year or so.If I get a 650b fork now and run it on my bike with the 26 inch wheel will it make my head angle and bb height much different?
flag demo8dave
O+
Posted: Oct 19, 2015 at 8:40 Quote
Well the obvious thing to do is get the a2c measurement of your current fork and future fork and use an online geometry calculator.
Roughly speaking you will be looking at an extra 10mm a2c for the same travel fork which is about 0.5 deg on your head angle.
flag srbell
O+
Posted: Feb 3, 2016 at 13:16 Quote
Pretty interesting discussion. I found a 27.5" Boxxer WC (2015) that could work with my old Specialized 2008 Enduro... No weight difference between the awful 150sl triple fork it came (about 6" of travel) with and the Boxxer. But the Boxxer will add about 2" of travel and will rake it out more. But with a 26" wheel it may be more manageable. Maybe I just like triple clamp forks lol!
flag markg1150
Posted: Feb 20, 2016 at 1:14 Quote
My 150 26er revelation is 15mm lower a2c than a 160 650b pike.
So 10mm for the increased travel and just 5mm for the bigger wheel. The change is in the arch height mainly. I run the pike with a 26 wheel and bike. I then run more sag and tokens to get the balance of the bike back to were it was.
flag a-d-e
O+
Posted: Feb 20, 2016 at 2:07 Quote
markg1150 wrote:
My 150 26er revelation is 15mm lower a2c than a 160 650b pike.
So 10mm for the increased travel and just 5mm for the bigger wheel. The change is in the arch height mainly. I run the pike with a 26 wheel and bike. I then run more sag and tokens to get the balance of the bike back to were it was.
bitconfusing & misleading. 'like for like' would be more informative i.e pike vs pike.
there is no benefit to running 26 in a 275 fork unless its for a transition to smaller/larger wheelsize (guessing larger?). a 275 fork is 10-15mm taller than 26 because the 12mm radius increase on a 275. will raise the bb around 5-6mm so nothing drastic.
hope that helps.
flag markg1150
Posted: Feb 20, 2016 at 2:54 Quote
Doesn't have to be like for like to be useful info. I had a set of 650b pikes and a set of 26 revs. I wanted something better than the revs so tried the pikes. End result is the bike is spot on with the 26 wheels in the 650b fork on a 26 bike. Plus my pikes are a tad more future proof/sellable. I was looking at getting some proper 26 pikes or fox 36s second hand but I saved a fortune and the great gamble of second hand.
It shows people who want to upgrade there forks that there not entirely restricted to buying a out of date 26 specific fork just to maintain the handling charactiscs. The bike has the same ride albeit with the obvious befits of the pike. If it had been a 160 rev vs 160 pike that's 5mm a2c difference. Which when you factor in sag settings is naff all.
flag a-d-e
O+
Posted: Feb 20, 2016 at 8:28 Quote
different fork have different atoc. but yes generally speaking 26 is shorter as you pointed out.
flag StevieJB
Posted: Feb 29, 2016 at 14:04 Quote
I'm sure as long as BB drop isn't too much then it doesn't matter 26" into 650b frames or forks, BB too much I mean more than 35mm, 50mm drop correct 650b wheels in my Ragley for example I pedal strike all the time, 26" would be un-rideable.

I have just started building my wife a new bike, Chinese carbon 26" frame, 650b rock shox XC32 solo air fork, 26" wheels - I think it'll turn out a great very light very cheap (£320 frame & fork new prices) nicely angled build.

 


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