rich1978

excellent advice. that sounds very plausible, thank you. all will be revealed tomorrow I guess (I'm going to ask them to take it out on a 5 mile test etc. - they said it looked OK before but there's no way if they had driven it for a period of over, say half a mile, that they wouldn't have noticed it) its very frustrating

cheers guys. all will be duly noted. any other suggestions? Once they (hopefully) get to the bottom of it, I'll let you know what it was

not tried that, to be honest I'm not particularly technical minded (although I'd like to change that!) is there anything else it could likely be? I want to go back to the mechanic on Monday armed with as much info etc as possible so that he can check and rule things out. any suggestions greatly appreciated. thanks.

Hello all, New member here, so please go easy on me! I have a technical problem that I'm hoping someone can point me in the right direction on. I have a 56 plate XT125X which I use to commute on (around 100 miles a week) It's done almost 10,000 Kilometres without much hassle but recently I have had a nightmare with the back brakes. it started when the rear brake continued to apply itself after i had taken my foot off the brake. I took it to the garage (authorised Yamaha dealer) and they said it looked like the seal had gone on the rear calliper. it took 2 weeks to order in the parts from Holland (a whole new calliper and disk set costing a lot! - apparently they cant just replace the seal) anyway, after braving public transport while the bike was in the garage i finally got it back yesterday, only for the problem to be much worse! previously it only happened when i used the back brake so i avoided using it (not ideal i know but hey) now, with brand new calliper and disk etc it happens randomly at really inopportune moments (trying to overtake a bus on the old kent road this morning!! not the time when you want your rear brake to apply itself almost fully in the morning rush hour. the problem seems intermittent, happening when the brakes are cold or hot, totally arbitrary. it will engage then pop out (causing me to shoot forward) this is obviously very dangerous and disturbing but the garage has had it back in today, taken it apart and put in new wheel bearings (!?) to no effect. they're stumped and so am i. does anyone have any ideas what it could be, or have had the same themselves? I'm not feathering the brake, the mechanic bled the brakes and all the pats are new now. it's very frustrating, it cost me almost £400 including labour and its worse than it was before! (at least it only happened when i used the rear brake before!) argh! please advise! Cheers, Rich