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Builder's Corner Restoration and preservation. Keep them running in perfect shape. What size is your bottom bracket?

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Old January 19th, 2014, 11:57 PM   #1
MTB Mania
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Default 650 wheels in a Buck Shaver frame?

Hi All,
Long time Fat fan, first time poster here,
Im looking to convert my Buck Shaver to a 650 wheel size. Does anyone have any experience with this?
My greatest concern is that the wishbone seat stays are just too narrow to accommodate a 650 wheel and tire. Furthermore, I don't know of a canti brake that allows for the pad adjustability needed to make contact with a taller rim.
Also, does anyone think this set up just plain sacrilege?

Thanks for any advice
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Old January 26th, 2014, 11:11 AM   #2
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Paul Motolite brakes would work to reach the rim of a 650b, in fact they say they could reach a 700c. The rear tire is another issue, it could depend on the tire size, you'd have to do some measuring, or mock it up if you have access to a 650b wheel.
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Old January 27th, 2014, 12:03 AM   #3
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I would imagine tire clearance is the limiting factor. Thanks for motolite tip, I'll be looking into it!
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Old January 27th, 2014, 9:56 AM   #4
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I think old Avid Tri's are an option. Seems like I read that somewhere, but I could be wrong. FYI: There will be some geometry changes due to the bottom bracket being higher off the ground, but you probably all ready knew that.
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Old January 27th, 2014, 3:07 PM   #5
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You could fabricate a brake adaptor. Mavic had a 26/700..
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Old January 27th, 2014, 6:06 PM   #6
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Quote:
Originally Posted by fat-tony View Post
There will be some geometry changes due to the bottom bracket being higher off the ground, but you probably all ready knew that.
Yea, This is another consideration that may influence me to scrap the idea. I live in an area where the riding is smooth, fast, and curvy. Higher BB would be a disadvantage...
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Old January 27th, 2014, 6:07 PM   #7
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Quote:
Originally Posted by colker View Post
You could fabricate a brake adaptor. Mavic had a 26/700..
Hmmm...sounds cool. ill look into it!
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Old January 27th, 2014, 9:04 PM   #8
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BB height….hmm.

Look at a Steve Potts 29er…with a type 2 fork.

http://4.bp.blogspot.com/_QIN_7pXAfJ...0/IMG_0044.JPG

if you are not looking to put suspension on it, you could run a shorter fork with just enough clearance to keep the BB lower.

it would probably be a fast handler.
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Old January 27th, 2014, 9:18 PM   #9
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go for a 26/ 650B combo. the BUck is designed for 410mm forks. Go w/ a 425mm and you can fit a 650B wheel... w/ discs upfront.
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Old January 28th, 2014, 10:43 AM   #10
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Quote:
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Oh man that thing's a beaut' !!
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Old May 13th, 2014, 9:16 AM   #11
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Quote:
Originally Posted by MTB Mania View Post
Hi All,
Long time Fat fan, first time poster here,
Im looking to convert my Buck Shaver to a 650 wheel size. Does anyone have any experience with this?
My greatest concern is that the wishbone seat stays are just too narrow to accommodate a 650 wheel and tire. Furthermore, I don't know of a canti brake that allows for the pad adjustability needed to make contact with a taller rim.
Also, does anyone think this set up just plain sacrilege?

Thanks for any advice
Any luck with putting this together? How does it ride?
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Old May 21st, 2014, 9:33 AM   #12
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I finished this build with 26" wheels for now. I'm still shopping around for a builder who might make suitable fork for the purpose. In the meantime, I was re-inspired by looking at the Rivendell website employee bike page; there's a bontrager set up 26-27.5 that looks interesting, although not very traditional
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