I just bought a nice Renthal R-1 chain (520) for my 2007 Rev 3 and now the chain rubs on the rear brake pedal. I've tried to adjust the brake with no luck and have moved the masterlink to the inside. The old chain didn't rub to the best of my knowledge. Any advice would be greatly appreciated.

Did the old chain carve a groove into the pedal which the new chnage does not fit into?

i'm sorry but the renthal chain no good for a rev 3 the pins are to long either you accept that its going to wear your brake pedal thin,or you buy the original regina chain from lampkins on witch the pins are alot shorter but a good quality chain

Edited July 23, 201214 yr by inchhigh

Thanks for the reply, yes the old chain did seem to wear the pedal a bit from what I can see. I also have a spare Rk chain as well. Thanks

Even as all the chains are 520 pitch,there is a lot of difference in width, even in the Regina range .make sure it's a Trial specific one.

I can't fault the Regina that comes as standard on the beta.

Regina is the best bike chain ever made.

My original chain would periodically touch the brake pedal so I assumed the pedal had been bent in slightly. I just installed an RK O-ring chain (GB520MXU) and could feel some more serious rubbing. I reversed the master link and used some channel lock pliers to bend the end of the pedal out slightly. There is now zero rubbing. But....channel lock pliers seem like one of the tools that would have a different name in the UK.

no we have channel lock pliers here.

they are either marked channel lock or blue point.

the only different is the colour of the handles.

Or water pump pliers? Mole grips?

Be careful trying the bend alloy. It can snap without warning.

One thing to check is the bolt/bush?mounting hole where the pedal attaches. This can wear and add to your problem.

Just checked my 2003 Rev 3there is 7.4 mm between the rear brake rod and the chain. The frame is slightly different. On mine the brake rod sits in a little cut out in the frame inside just above the footrest hanger mounting.

My 07 rod sits in a recess but I think he means the pedal end (the back of the bit you press on) is contacting the chain.

Yes, it is the pedal end that is close. Does anyone know how to remove the pedal? It looks trapped in place by the swingarm. Do you just need a skinny wrench to get in there?

Yep. Remove the pivot bolt and the actuation rod.

Check all moving parts for wear. If its the original and someones not been liberal with grease it will be worn.