gears slipping/jumping

dexty

went out yesterday and the gears keep slipping and jumping on the small ring, seem ok on the big ring. so i hav a dvd of how to fix it ureself but am a bit confused as to whether to adjust the rear derailer cable screw/adjuster or adjust one of the two screws underneath (at the back actually) which shud i try first? i shud be able to rectify this problem myself, rite? it's the old dura ace, 7800 i think, the one b4 they burried the cables along the handlebars (?7900).

any advice appreciated, Regards, D

Canis Lupus

Are all the gears jumping and are you sure it's that? Can you safely look and see the chain trying to change cogs? A worn chain slipping has the same feel so make sure that's not the problem first.

at1withmyself

dexty wrote: »

went out yesterday and the gears keep slipping and jumping on the small ring, seem ok on the big ring. so i hav a dvd of how to fix it ureself but am a bit confused as to whether to adjust the rear derailer cable screw/adjuster or adjust one of the two screws underneath (at the back actually) which shud i try first? i shud be able to rectify this problem myself, rite? it's the old dura ace, 7800 i think, the one b4 they burried the cables along the handlebars (?7900).

any advice appreciated, Regards, D

If there only jumping in the small ring I'd guess it might be time to change the ring. However if you change the ring you might also want to change the chain and cassette. Its a hard one to judge with out seeing the bike, prob best to bring into a shop for a professional opinion.

dexty

thanks 4 the replies. got it sorted myself tho, just adjusted the rear cable screw and it's perfect now. and to think that i spent 40 euros b4 gettin it looked at the last time it happen about a year ago! was so simple, took me 10 mins adjusting and testing max. went out then 4 an hour with no slipping at all, great! delighted with myself!

Lusk Doyle

dexty wrote: »

thanks 4 the replies. got it sorted myself tho, just adjusted the rear cable screw and it's perfect now. and to think that i spent 40 euros b4 gettin it looked at the last time it happen about a year ago! was so simple, took me 10 mins adjusting and testing max. went out then 4 an hour with no slipping at all, great! delighted with myself!

Well done - I have the same problem myself so I'll try that also to fix it. So annoying when you get out of the saddle on a hill and the gear slips!

BostonB

Mine does it when sprinting out of junctions to get into a gap in traffic. Bit annoying. Must fiddle with it over the wkend.