As a mechanic I would not let this leave my stand like this but would ride it on my own bike. I would not ride it fast though
Gooch-ABC on
Nope
queen_ravenx on
I’ve done this on a quite a few bikes and have yet to die from it. Needs a slight adjustment more than one would like but its fine. I see a couple nopes here but would appreciate some elaboration.
Morall_tach on
Definitely not, and I don’t even see how it’s giving you extra tire clearance in the brakes. You’d have to move the whole brake assembly upward, not forward.
PHILSTORMBORN on
Just my opinion but front wheel clearance is the easier one to fix. Get a cheap winter training fork that has the right clearance.
Photos can be deceptive. The way I’ve always heard to gauge the distance is the largest size hex key that fits at the narrowest point. What size is that?
Mobile-Concentrate29 on
As long as the brake bolt still has full engagement with the threads this is a non issue, but I would just run 25’s
wyrrk on
could see a possible issue from brake pulling down and inwards due to the possible increase flex created by move the caliper forward, but i really dont have an answer for how much? maybe noticeable, maybe not.
It’s safe.
I did this on my fork to gain clearance at the caliper levers a have ridden nearly 10 years with this setup.
My form clears a 28-30mm tire, but the original 105 short-reach caliper or caliper placement caused tire rub on the caliper arm.
Shimano ships these brakes with a washer, so a slightly thicker one adds clearance using one less thread at the caliper attachment bolt.
The idea is instead of using mid-reach brakes which the fork was not designed for, I am setting it slightly farther offset from the crown, which utilized the curve of the rim to add clearance. Try drawing it out and you’ll see Whats happening.
trance_on_acid on
This isn’t any different than mounting a front rack stay under your brake. All the naysayers are overreacting.
ekkthree on
I’ve seen this setup in the past and as long as you don’t get stupid with the amount of spacer IRL you’re probably fine.
Alternatively I know someone who used a thinner brake pad insert so that the brake itself is more ‘closed’ which also pivots that arm out of the way. It’s not a lot but it’s enough
FineFunnyFingers on
Yes it’s fine. If you feel a shudder while breaking dismount and tighten accordingly. Again it’s fine. Go ride it and tell us how fine it is
Capt_Stoopid on
Look. If it’s your only brake ( as in you only have a front brake and no back brake)
And you are going to be going really fast and braking hard over and over, MAYBE it’s an issue. BUT if you are just cruising around, not too fast, not too slow in a regular commuting kind of way. You’ll be totally fine.
There is a LOT of worst case scenario stuff in the thread. But IMO as a random person on the internet who has been riding and working on bikes for the last 20 years. I think it’s perfectly fine.
terminal_nervoso on
Doing this to make a particular caliper work on a particular fork? Okay. Doing this to go up 1.5mm wider on each side of the tire? Ehhhh…
13 Comments
As a mechanic I would not let this leave my stand like this but would ride it on my own bike. I would not ride it fast though
Nope
I’ve done this on a quite a few bikes and have yet to die from it. Needs a slight adjustment more than one would like but its fine. I see a couple nopes here but would appreciate some elaboration.
Definitely not, and I don’t even see how it’s giving you extra tire clearance in the brakes. You’d have to move the whole brake assembly upward, not forward.
Just my opinion but front wheel clearance is the easier one to fix. Get a cheap winter training fork that has the right clearance.
Photos can be deceptive. The way I’ve always heard to gauge the distance is the largest size hex key that fits at the narrowest point. What size is that?
As long as the brake bolt still has full engagement with the threads this is a non issue, but I would just run 25’s
could see a possible issue from brake pulling down and inwards due to the possible increase flex created by move the caliper forward, but i really dont have an answer for how much? maybe noticeable, maybe not.
https://www.sheldonbrown.com/calipers.html
-scroll down and see the mixte brake setup. if OPs brake is scaring you all, you’ve grown soft.
It’s safe.
I did this on my fork to gain clearance at the caliper levers a have ridden nearly 10 years with this setup.
My form clears a 28-30mm tire, but the original 105 short-reach caliper or caliper placement caused tire rub on the caliper arm.
Shimano ships these brakes with a washer, so a slightly thicker one adds clearance using one less thread at the caliper attachment bolt.
The idea is instead of using mid-reach brakes which the fork was not designed for, I am setting it slightly farther offset from the crown, which utilized the curve of the rim to add clearance. Try drawing it out and you’ll see Whats happening.
This isn’t any different than mounting a front rack stay under your brake. All the naysayers are overreacting.
I’ve seen this setup in the past and as long as you don’t get stupid with the amount of spacer IRL you’re probably fine.
Alternatively I know someone who used a thinner brake pad insert so that the brake itself is more ‘closed’ which also pivots that arm out of the way. It’s not a lot but it’s enough
Yes it’s fine. If you feel a shudder while breaking dismount and tighten accordingly. Again it’s fine. Go ride it and tell us how fine it is
Look. If it’s your only brake ( as in you only have a front brake and no back brake)
And you are going to be going really fast and braking hard over and over, MAYBE it’s an issue. BUT if you are just cruising around, not too fast, not too slow in a regular commuting kind of way. You’ll be totally fine.
There is a LOT of worst case scenario stuff in the thread. But IMO as a random person on the internet who has been riding and working on bikes for the last 20 years. I think it’s perfectly fine.
Doing this to make a particular caliper work on a particular fork? Okay. Doing this to go up 1.5mm wider on each side of the tire? Ehhhh…