Gear problems

[jaysonkandiah]

when my front derailleur is on 3 and my rear derailleur is on 1 the gear doesn't engage and instead some of the chain comes on the front derailleur and the rest stays on front. derailleur gear 2. if i press harder it looks like the jockey wheel of the rear derailleur will come off, as the whole jockey wheel piece is extending to maximum, and a bit more of a harder push looks like it will tear it off. what do u think is the problem?

please help

[cyclerUK]

(01-20-2010, 09:42 PM)jaysonkandiah Wrote:  when my front derailleur is on 3 and my rear derailleur is on 1 the gear doesnt engage and instead someof the chain comes on the front derailleur and the rest stays on front. derailleur gear 2. if i press harder it looks like the jockey wheel of the rear derailleur will come off, as the whole jockey wheel piece is extending to maximum, and a bit more of a harder push looks like it will tear it off. what do u think is the problem.
please help

Is your chain too short?
See this tutorial:-
http://bikeride.com/calculate-chain-length/

[KDC1956]

If I get you right you are saying your chain is on the small sprocket on back and the big sprocket on front. If this is right your derailleur she be at 6 pm if its not then your chain is to short. You will need to add a little more chain then it should be fine.