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Can A Rim Influence Braking Performance?


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Well I know it can in a way but here's the problem.

I've had a TT SL front rim for 3 years now. 1 year ago my brake started performing poorly. Up until today I've tried Cousts, Yellows, CRM's and recently Phats. The braking on all these pads was piss poor with very little hold. The rim has a sharp grind on it but that doesn't help, neither does tar or resin. I've also used a series of brakes, from SL's to TR's and HS33's. The brake mounts have been faced and I'm using TR clamps.

To put it short, I've changed everything over the past year apart from the rim itself.

Every time when applying resin the rim is de-greased so it's nothing to do with contamination.

Has anyone else had a problem like this? The problem started roughly 1 year ago, it's driving me nuts.

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i had this problem with my trialtech rim.

no pads seemed to like it, always had to use tar to get it to work.

i made a topic about it , and a number of people had the same problem with a tt rim.

just change to echo tr , will edit when i have a good ride on it (Y)

hope this helped in some way.

Edited by matt.price
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The rougher the rim the more grip the pads can get on it, its like the difference between walking on ice with trainers on and walking on tarmac with trainers on.

Surely dependant on the grind rather than the rim.

I have no idea why a certain im wouldn't work as well, in my experience certain rims stay working longer than others due to a harder aluminium that holds grinds better.

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Surely dependant on the grind rather than the rim.

I have no idea why a certain im wouldn't work as well, in my experience certain rims stay working longer than others due to a harder aluminium that holds grinds better.

forgot to add the grind bit

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Depends which one you have, i had a standard TT circle hole on LGMs and it was amazing, yet jamie williams says his tt sl wasnt anygood with LGMs... :S

I have an SL, LGMs have worked perfectly on it. Although these pads just slip too much if you miss your move. Try-All Yellows are better!

my lgms were shit on my tt sport rim.

Mine were fine!

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i had this problem with my trialtech rim.

no pads seemed to like it, always had to use tar to get it to work.

i made a topic about it , and a number of people had the same problem with a tt rim.

just change to echo tr , will edit when i have a good ride on it (Y)

hope this helped in some way.

Cheers man, that's really helpful especially as you've also gone through a few different brake setups yourself.

Going over to Bonz wheels soon, hope to put an end to this. Don't really want TR rims, they're soo heavy :unsure:

Depends which one you have, i had a standard TT circle hole on LGMs and it was amazing, yet jamie williams says his tt sl wasnt anygood with LGMs... :S

The Sport and SL rims are the same thing. Before the new range of SL rims was introduced, the only difference was the colour. Now, the only difference is that Sport rims have round holes and SL's have square holes (as far as front rims go obviously, the rear is quite different).

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Yeah, i agree. Rim definitely affects brake performance. Fresh medium grind on try all rim with heatsink yellows. Rubbish bite, pretty bad hold. Fresh medium grind on onza rim, same brake set-up as before and the brake performs amazingly.

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