Slipping chain, help please.

[raw-eggs]

I've just built up an MTB, which is a 3x9 speed bike. I have bought a new chain, replaced the crank for a VGC LX unit, and everything else seems to be in order, but the chain keeps slipping and start to pee me off

cogs are good on the rear derailleur and cassette, and the chain is the same size as the old one (1/2" pin to pin)

someone please help, i want to go out riding

 

[stewlewis]

Slipping issues I've had always seem to be cassette, stuck cable to rear der. or twisted hanger, not a bent hanger but twisted so the jockeys don't look parallel to the wheel rim.

 

[raw-eggs]

all seems straight, i mean slipping on the cogs, not slipping between gears

i have just tried to get the cassette off and the skewer is rusted solid into the hub, and has come apart.

looks like i need a Hope hub rebuild. great, just want i needed.

 

[gump]

Sounds like worn cassette.

Hope hubs are dead easy to pull apart too, should be ok.

 

[raw-eggs]

Sounds like worn cassette.

Hope hubs are dead easy to pull apart too, should be ok.

unfortunately its wasnt. the skewer is rusted solid, so when trying to hammer it out, the whole inside unit came out, and the cassette is stuck solid on the other part of the hub, trying to undo it felt like it had rounded off and/or got cross threaded

 

[FairfaxPat]

Sounds to me that you need a new cassette-even though it might not look that worn, when you put a new chain on old gears slippage happens and the cure is new gears also!

 

[feetabix]

make sure the chainrings are good too.....wear there can appear like the problem is at the rear of the bike if the slippage occurs when pedalling hard....

 

[ishaw]

I've just fitted a new chain to a build and whilst the middle ring looks fine, you can't put any power down as slips straight away. Just because it looks right doesn't mean it is, but it sounds like your cassette is the problem?

 

[raw-eggs]

yes i think we've established thats the problem

new problem though... my hub is screwed