adjustable bottom bracket

OK, This may be a naive question but here goes:

I am using an experimental crank setup that requires me to use a
standard taper BB (have some biomechanical issues). The BB my fit guru
installed is a 113 mm shimano cartridge. The clearance between ring and
frame is pretty tight with this set up. I'd like to lighten up a little
bit and have an old 110 mm World Class Ti bracket in my spare parts
box. I've never mounted a BB, btu they advertise this as "infinately
adjustable" since there is no lock ring- "both cups adjustable". Will I
simply be able to mount the 110 BB 1.5mm offset to the right side to
make it work or would I need some type of spacer? Or am I foolish to
try this and should I look for a 113mm bracket? It is hard to find a
light weight Ti taper bracket these days- any one have one for sale?

-DM

Dave Mills wrote:
I'd like to lighten up a little
bit and have an old 110 mm World Class Ti bracket in my spare parts
box. I've never mounted a BB, btu they advertise this as "infinately

adjustable" since there is no lock ring- "both cups adjustable".
Will I
simply be able to mount the 110 BB 1.5mm offset to the right side to
make it work or would I need some type of spacer? Or am I foolish
to
try this and should I look for a 113mm bracket? It is hard to find a

light weight Ti taper bracket these days- any one have one for sale?

-DM

Actually a reasonably intelligent question. As far as I can tell, your
arrangement should work, unless there isn't enough clearance for the
left crankarm. You should not need a spacer- in fact, there's no way to
use a spacer for what you're asking.

Here's a picture of a World Class BB:
http://www.bikepro.com/products/bott...ts/wclass.html

Jeff

wrote:
Dave Mills wrote:

I'd like to lighten up a little
bit and have an old 110 mm World Class Ti bracket in my spare parts
box. I've never mounted a BB, btu they advertise this as "infinately


adjustable" since there is no lock ring- "both cups adjustable".

Will I

simply be able to mount the 110 BB 1.5mm offset to the right side to
make it work or would I need some type of spacer? Or am I foolish

to

try this and should I look for a 113mm bracket? It is hard to find a


light weight Ti taper bracket these days- any one have one for sale?

-DM


Actually a reasonably intelligent question. As far as I can tell, your
arrangement should work, unless there isn't enough clearance for the
left crankarm. You should not need a spacer- in fact, there's no way to
use a spacer for what you're asking.

Here's a picture of a World Class BB:
http://www.bikepro.com/products/bott...ts/wclass.html

Jeff

I agree with Jeff to a point but it might be better to find an
adjustable 113mm so you can maintain left/right alignment for your
knees. This won't be severe with 3mm either way but if it looks more
like 6-7mm you should think about this. I have tried it and the ride is
funky. I didn't damage my knees but it rides differently than my other
bike and there are still 113mm adjustable BBs around like Real Design,
WTB, etc. They take some hunting down but they are out there.

Terry