i am trying to run 1&3/8" rims with v-brakes on a pro concept pro size frame. i have shimano deore brakes on there. they are about an inch too short for these rims. what are my options?

1-3/8" rims, as you've now found out, are much bigger in diameter than a 20x1.5 or 1.75. Tektro (maybe others) makes a mini v-brake that should solve your problems.

pgringo, whats your weight? Aren't you worried about folding those rims? I've always wanted to run a set ala Bubba Hayes SE days but was scared, sticking with my 1.5s and 175s. Is the weight reduced that significant? I'd like to know.

i only weigh 120#. i'm currently running them on my PK ala Bubba. i need to retire that frame though. the thing i like about 1&3/8 the most is that i have found the gearing that feels, to me, to be perfect.

Don't know if this will help, but I think that a 1 3/8 is similar in size to a 1.75 If it is, you might try running a 16-18 mm rim with a 1.5 or 1.75 tire. I currently run 16mm Sun rims with a 1.75 (in the back.) I weigh about 190, but I don't thrash my race stuff. For what it's worth...

try some different brakes; the Deore have about the smallest range of adjustment of anything.

Maybe some Tektros?

There are a couple of soultions to using 20 x 1-3/8 rims on a frame designed for 20 x 1.75 rims. Pauls brakes have more adjustablity than any brake on the market with almost 2 inches of adjustability. They are awesome brakes, but pricey. The second highest adjustment that we have found is the Odyssey A brake, and it works in some instances. The mini brakes will only make your problem worse, not better. There is a part called Troy's Toy that will also do the trick by extending the reach of the brake pad where it hits the rim instead of the spokes.

There are a couple of soultions to using 20 x 1-3/8 rims on a frame designed for 20 x 1.75 rims. Pauls brakes have more adjustablity than any brake on the market with almost 2 inches of adjustability. They are awesome brakes, but pricey. The second highest adjustment that we have found is the Odyssey A brake, and it works in some instances. The mini brakes will only make your problem worse, not better. There is a part called Troy's Toy that will also do the trick by extending the reach of the brake pad where it hits the rim instead of the spokes.

Debby, can you email me some info on that Troy's Toy gadget?

jtsx@aol.com

JT

a friend made me an adaptor once, it was triangular in shape with two threaded holes that had bolts which you put through the brake block mount on the brake & a plain hole which the brake block went into, this worked on a 98 Ripper,oh & you need to make one for each side.
DINGO

i'm gonna try a piece of 1" angle aluminum on each side. i got the stock today and i should have it done by later tonight. i'll post pics when done.

works like a charm



$2 plus change, 30 minutes worth of fabrication, and i didn't have to wait for something to come in the mail.