Shifting Issues
285
Member
1357 days
Great Greyhound posted 3 years ago.
Shaun,
It sounds like an adjustment issue, if the bike is new, or the shifting cable is new, it will stretch. I went online and found the service manual for my derailleurs and brakes. Since I have Shimano components, I downloaded the service manuals that show exactly how to adjust and service my components.
If the derailleur moves the chain down too far on the small ring, and the chain falls off, and when the chain is on the small ring, you can't shift up to the big ring, there is a barrel near the shifter, or on the cable somewhere. By turning the barrel will 'lengthen' or 'shorten' the cable, which will control how far the derailleur moves the chain.
Now, before you start adjusting things, get out a pencil and paper, and record how many turns, or clicks that you adjust and what direction, clockwise or counter clockwise. That way, if you make things worse, you can at least get back to where you were.
If you have Shimano Components, check out http://bike.shimano.com then find Technical Documents.
Darrell "Legs 'n Lungs" Lenkner
in West Chester, Oh.
Check here for Images of us.
75
Member
1222 days
ShaunCrawford posted 3 years ago.
$$$$$$$$$$
Just what i needed, thanks a million!!!!!!!!!
[FONT=Arial]"It's supposed to be hard. If it wasn't hard, everyone would do it. The hard is what makes it great."
830
Member
1403 days
catwood posted 3 years ago.
There is also like a $5 piece of plastic you can buy that will keep your chain from slipping off... Can seem dorky, but worth it if its an issue. (especially with a triple - chains fall off triples more frequently than doubles)
Also, if your chain falls off, about 50% of the time you can get it back on by pedalling and shifting towards the big ring...
209
Member
1378 days
jmcglos posted 3 years ago.
I had lots of problems about a year ago on my bike with the same issue. I (meaning my LBS) switched out my triple and replaced with a double chain ring. They also adjusted the front derailleur. That cured most of the problem. Recently I got a new chain because I had put lots of miles on the old one (worn out and stretched) and since then, I have had no problems with the chain slipping off. Your chain may be old or stretched and can be causing the problem too. Just some ideas from my experience!
Please excuse my lack of technical terms but here's my issue
In both races I've been in at some point on the bike when i shift down into my smallest gear to go uphill the chain slips off. I jump off the bike, crank it back on and get going. Along the way something goes wrong though. When it comes time to shift back up to do some real pedaling on the flats or downhills i can’t get into by biggest gear. The chain makes a grinding noise but never shift up. No issues getting into the middle one, but the big one...the one i use mostly on the downhills doesn’t want to engage. Any thoughts on how to prevent the chain from slipping off. And even more, and advice or websites anyone can direct me too on some basic bicycle maintenance tips. After the last race i forked out the 40 bucks to get to tune up and it happened again on me a week later. I would love to be able to fix my drive train issues on my own but just dont have the bike knowledge. PLEASE TEACH ME!! :)
Thanks
[FONT=Arial]"It's supposed to be hard. If it wasn't hard, everyone would do it. The hard is what makes it great."