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Help With Disc's


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Discs on trials bikes are not a very good idea, they break if you muck up a hop and catch them, they warp if you ride in cold conditions and all the hopping causes a certain area to heat up (which it will do), they bend themselves just from hopping around. Discs on the front are not as bad on discs on the back but they are still a bad idea. Trust me when I say, it is worth your while to stick with the maggie or if you don't like it use a V-brake, they rule up front.

Edited by sstein
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90% of riders (maybe...) run a disc up front.

It's pretty rare to catch it on a failed sidehop etc, and if you should somehow manage it, chances are it won't deform much beyond it's elastic limit if at all. In this case, a slight tweak with an adjustable spanner usually puts things peachy again. They will heat up a little if you make a habit of riding down massive hills really fast with the brake on, but you have to be pretty silly to do so. It certainly won't cause the rotor to deform itself beyond tweaky goodness, more likely you'll just need to throw on some water and possibly bed it in again. There's nothing wrong with a maggie/vee mind - I'd quite like to try one myself if I had the forks and the funds for it :P

BB7/Mono Trial seems to be the general weapon of choice, but don't rule out Formula etc for other alternatives.

Most likely choice is to grab one of the first two on here. You'll probably be able to get a full setup (Caliper, pads, cables/hosing, lever, rotor, mounts and/or adaptors) for around £50 or so, [pssibly less if you keep your eyes peeled :)

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In my ZOO Python i have Avid BB5 160mm with Shimano XTR lever , beautiful :)

My big isnt trials specific but it has avid juicey hydro disks on both end. I like the grip. The more I use it the more it seems to grip :)

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Discs on trials bikes are not a very good idea, they break if you much up a hop and catch them, they warp if you ride in cold conditions and all the hopping causes a certain area to heat up (which it will do), they bend themselves just from hopping around. Discs on the front are not as bad on discs on the back but they are still a bad idea. Trust me when I say, it is worth your while to stick with the maggie or if you don't like it use a V-brake, they rule up front.

Yeess...

They definately do not warp when cold, or bend just from hopping around. I have been running dual disc for nearly a year solid now.

They don't break either! They just bent, in which case you just bend them back.

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Yeess...

They definately do not warp when cold, or bend just from hopping around. I have been running dual disc for nearly a year solid now.

They don't break either! They just bent, in which case you just bend them back.

I dont know, maybe I have been extremely unluvky with discs but mine keep warping and they are not crap ones. I have been through avid g2 rotors, hope mono trial rotors and at the moment am trying some gusset cutter style rotors on one of my bikes, on my trials specific bike I will keep to rim brakes from not on, they are more powerful too (it's like a 26" rotor)

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if i was you i would stick with the hs33's.

i run a disc on the front and i find it abit of a pain because it can be hit on things very easily.

i run a 180mm if you do go to disc i would say the smaller the better. aslong as there is anough braking power.

i dislike it that much that i am saving up for hs33's and a compatible rim.

Edited by otaylor38
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they are more powerful too

Lol. That would be so true if it was true. It may be a 26" rotor, but you can't put anything like as much pressure on the pads.

I used maggy for about 8 months, and tried loads of pad/grind combos, and I am still trying to get a decent maggy on my brothers bike. It's now the best maggy I have ever built, but it's still rubbish compared to a disc.

I have never used a disc on a stock though, I'd imagine that the flexes involved would be worse than on a mod.

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