On 26/03/13 12:18, hsmitham wrote:
Hey Folks,
First can a bike with 27" wheels (630mm) be converted to 700c ( 622mm)
essentially 8mm difference smaller wheel diameter. What would be the
best Canti breaks to use? And can a 27" wheel be converted to a 650B?
There is a 46mm difference between 27" to 650B which seems too large a
jump down for such a conversion. In advance thank you for any advice.
If you have modern cantilevers with an adjustment slot for the pad
position, converting from 27" to 700c should be pretty easy, provided
there is 4mm of adjustment available in the slot.
The difference between 27" and 650b is 23mm, not 46mm (it's the
difference in radius that has to be adjusted for). If you want to
continue using cantilevers, you'll have to get a framebuilder to move
the studs. Or alternatively, you could get another fork designed for the
650b wheel, and use a rear disk brake with a Brake Therapy unit that
mounts off the existing cantilever stud (see
http://2btherapy.com/bikes/brake-therapy-conversion-kit). That way you
can still convert back to 27"/700c by putting back the original fork and
reverting to cantilever brakes.
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