New chain

zanush

After 6 months off the bike due to illness and a knackered achilles i did a quick tentative ride today and the chain was slipping and using the 12" rule method it's just over 12 1/6"
I've got a new kmc chain sitting in it's box, the chainring looks pretty much unscathed but the smallest cog on the cassette does see some wear and not sure if i need to change the cassette aswell or if it's still got left in it.

drlodge

I doubt the smallest sprocket has worn if the rest are OK, it looks like the way the teeth are shaped to me. Also, I doubt you use the smallest sprocket much so even if it is worn, it won't have much impact.

Chunkers1980

The only way to know is to give it a try. If it doesn't slip then all good. If it does whack the other back on.

zanush

Cheers for the replies

My ankle felt really stiff aswell so with the chain slipping i wimped out and pootled back home. This will be the first time i have ever fitted a new chain myself so that will be interesting lol

Chunkers1980

matching worn chains don't normally slip. Check for a stiff link and adjustment

zanush

I wonder if it's the jockey wheels then? as i replaced the very worn plastic ones last year with some aluminium ones just before my illness and achilles injury and this is the first time it has been ridden.

Chunkers1980

Jockey wheels are after the cassette in the loop so won't be them. b-screw affect the wrap so could be that. But you need to work it out what is slipping if it is.

zanush

I'll have to get it on the stand and give the drive chain a good clean and check the adjustment etc, maybe it just needs tweaking after sitting there for just over 6months. I think i'll still try the new chain aswell seeing as the existing one is >12 1/6" and it's still the same drive chain components from new apart from the jockey wheels.

bailsofhay

Sounds like what I experienced when I replaced my jockey wheels with alloy ones. Shimano derailleurs upper jockey wheels need a bit of side to side play for smooth shifting and the alloy ones I got had none so I got loads of skipping on the cassette as the chain couldn't line up perfectly. I ended putting my old upper one back on as only my lower jockey wheel needed to be replaced.

kirby700

if its the boardman (which it looks like it) Its a X7 sram derailleur. I've just changed my chain on mine and had to do the cassette too. Picked up a KMC X10 chain for £22 and SLX 10 speed cassette for £26.

45 mins to swap all over and tweak gears job done.

Seems fine after a short jaunt out with the kids this afternoon.

zanush

Aye it's the SRAM PG-1050 Cassette and sram derailleur on my boardie fs team and the new chain is a kmc x10el which was £22 from wiggle, i'm tempted to get an 11-36 SLX 10 speed aswell just in case.
I gave the drive train a good clean and adjusted it all on the stand and a quick whizz down the street and it still skipped so i took the chain off and there is loads of play between the rollers and the side plates.

zanush

zanush wrote:

I wonder if it's the jockey wheels then? as i replaced the very worn plastic ones last year with some aluminium ones just before my illness and achilles injury and this is the first time it has been ridden.

After a bit of tweaking inbetween watching the tennis today the slipping has stopped after messing about with the b-screw, after closer inspection(wearing my glasses this time) the inner chainring is showing a bit of wear aswell but i think i'll just throw the new chain on tomorrow anyway.

kirby700

how many miles has it done?

I'm to have to check mine now!

kirby700

Mine doesn't look too dissimilar to yours to be honest.

I rode mainly on big ring yesterday and it felt fine but when I went onto the smaller ring it felt a little ropey.

It just so happened I was abput 15mins away from a shop and nipped in and he diagnosed a bottom bracket on the way out. The bearings are rough so that the next thing to check / change

zanush

My BB is fine as it had one replaced due to the nuggets at Halfords killing it while trying to fix the recurring issue of the crank coming loose.
With the new chain it's still ok but i did go in to Halfords today to see if i could get an inner chainring but was told "we can't get one but we can do you a new FSA chainset for £134" lol

buddy_club

zanush wrote:

My BB is fine as it had one replaced due to the nuggets at Halfords killing it while trying to fix the recurring issue of the crank coming loose.
With the new chain it's still ok but i did go in to Halfords today to see if i could get an inner chainring but was told "we can't get one but we can do you a new FSA chainset for £134" lol

Buy your own then - although halfords sorted me out with one with no issues. Just make sure you have the crank puller as with mine i had to physically remove the crank to sort it out.