'slipping'...
 

  You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more

[Closed] 'slipping' chain when putting power down

24 Posts
19 Users
0 Reactions
234 Views
Posts: 0
Free Member
Topic starter
 

I noticed my chain was stretched (using chain checker) and changed it.
9 speed SRAM chain same as was on it before.
Got on the bike and set off from the car on a ride, no more than 200 yards to the first hill and 'click' 'click' 'click' real severe jarring with every power stroke.

Does it in all gears on the rear and on the front??

Any ideas??

Thanks
Coln


 
Posted : 07/10/2013 6:21 am
Posts: 0
Free Member
 

Front rings?


 
Posted : 07/10/2013 6:24 am
Posts: 0
Free Member
 

I had same .... If you don't change chain regularly enough (I.e. Leaving it until it's really worn) then it wears the cassette and front chain rings too......

So now the shiny new chain with round links doesn't fit correctly into the worn other components.

If you look closely (compare to an unworn sprocket .... You will see the teeth shape will be different ...... More oval......

You will need to change cassette and front ring (s) too.......

You can extende life of the next set by changing chain earlier


 
Posted : 07/10/2013 6:27 am
Posts: 3351
Full Member
 

Worn cassette?


 
Posted : 07/10/2013 6:27 am
Posts: 251
Full Member
 

If knackered freehub?


 
Posted : 07/10/2013 6:30 am
Posts: 507
Free Member
 

Put the old chain back on, and forget about it until it's actually giving problems, then change the entire drivetrain.


 
Posted : 07/10/2013 6:38 am
Posts: 0
Free Member
 

Are the rollers (in the chain) concave ? if not you can probably keep using it.


 
Posted : 07/10/2013 6:40 am
Posts: 71
Free Member
 

Worn cassette. Rings don't wear as fast and have to be incredibly worn before they cause jumping.

Either change cassette or put old chain back on. Next time change chain earlier, or decimate entire drivetrain before replacing all of it.


 
Posted : 07/10/2013 6:44 am
Posts: 1369
Free Member
 

Or chain is now too long? If its slipping in every single gear, front and back.


 
Posted : 07/10/2013 7:08 am
Posts: 71
Free Member
 

The cassette is just really shagged. Once all of those are worn the chainrings are an irrelevance. The chain wouldn't be too long in more than a couple of gears.


 
Posted : 07/10/2013 7:11 am
Posts: 0
Free Member
 

I had exactly this. Someone on here helpfully pointed out that the quick links (mine was connex) are directional. Turned the quick link round - problem solved.

Possible your Sram one is the same ?


 
Posted : 07/10/2013 7:12 am
Posts: 71
Free Member
 

Nope, PowerLinks aren't directional. How is that even possible?


 
Posted : 07/10/2013 7:20 am
Posts: 0
Free Member
Topic starter
 

Thanks for the replies,

I have foolishly thrown the old chain 🙁

I have ordered a new cassette and inner and middle ring, foooork me the outer rings are expensive! I hardly use that one so will try this solution first.

Its not the free hub slipping because I tried to make it slip with the chain whip and couldn't.

Fingers crossed it sorts it.
Cheers
Col


 
Posted : 07/10/2013 7:45 am
Posts: 0
Free Member
 

Drivetrain generally wears out in this order Chain>Cassette>Chainrings.
Its almost certain that your cassette has worn with your old chain - have a look at the teeth, do they have flat tops or are they all pointy?
Also check your rear mech jockey wheels!


 
Posted : 07/10/2013 9:36 am
Posts: 1318
Full Member
 

I keep hearing people say jockey wheels wear and affect performance - but never experienced that. I've changed jockey wheels because the teeth wore down to tiny pointy triangles but it never caused any skipping etc. All they do is provide chain tension. Genuine question - has anyone had worn jockey wheels cause skipping?

For your problem, I'd put money on cassette 🙂


 
Posted : 07/10/2013 10:54 am
 gren
Posts: 3
Free Member
 

Only time jockey wheels have been a problem for me is when they have seized. Things get really rough then. A good clean and lube sorts them though


 
Posted : 07/10/2013 11:14 am
Posts: 0
Free Member
 

I'd go chainrings, are the teeth really sharp? If so then its worn.
I've had cassettes wearing out, but not before a chainring, especially if your prone to using one particular one all the time. Its always my middle one that goes......


 
Posted : 07/10/2013 11:47 am
Posts: 71
Free Member
 

I'd go chainrings, are the teeth really sharp? If so then its worn.
I've had cassettes wearing out, but not before a chainring, especially if your prone to using one particular one all the time. Its always my middle one that goes......

Worn rings generally suck though, not slip. Worn cassettes slip. It's also in all gears, pretty unlikely all rings have got that bad without the OP noticing, quite possible that's happened on the cassette though.


 
Posted : 07/10/2013 11:50 am
Posts: 17728
Full Member
 

+1 for cassette. If you've bought new cassette & rings I would just fit the cassette and see how it goes. If it still slips then put the new rings on. But, I don't think you'll need them.

euain - Member
I keep hearing people say jockey wheels wear and affect performance - but never experienced that. I've changed jockey wheels because the teeth wore down to tiny pointy triangles but it never caused any skipping etc. All they do is provide chain tension. Genuine question - has anyone had worn jockey wheels cause skipping?

Never had skipping as a result of knackered jockey wheels, but shifting definitely improved replacing worn wheels with new ones. Not sure whether this is down to restoring the correct tooth profile or reducing the amount of lateral slop that had built up in the worn ones.


 
Posted : 07/10/2013 12:00 pm
Posts: 0
Free Member
 

Replace whole bike except the new chain


 
Posted : 07/10/2013 12:04 pm
Posts: 5936
Free Member
 

You will need to change cassette and front ring (s) too.......

sorry, but I really think you need to check the indexing before you thrw away money on new bits.

get on park tools website, reset both mechs, see if it's any better. it might not be, but it's worth a go.


 
Posted : 07/10/2013 12:20 pm
Posts: 0
Free Member
Topic starter
 

Right guys,
Many times people ask a question , get lots of replies then never come back to let you know the outcome.

Well firstly I Shortened the chain to it's correct length which made no difference.
Secondly I fitted the rear cassette......That sorted the job out, its perfect now.
Thanks for your help and advice again.
Colin


 
Posted : 08/10/2013 3:23 pm
Posts: 0
Full Member
 

Well I'm hoping it's the jockey wheels that were causing my chain to skip cause the chain cassette ad chain wheel were new and the jockey wheels were worn with one tooth snapped. Waiting for the new ones to turn up.


 
Posted : 08/10/2013 3:35 pm
Posts: 0
Free Member
 

Njee, it never fails to amaze me how many people state things as fact when they haven't bothered to checkTheir assumptions.

I can assure you that Connex power links are directional. Take a look at the destructions, then feel free to come back an admit you're fallibility.


 
Posted : 08/10/2013 3:37 pm
Posts: 2645
Free Member
 

pymwymis - Member

Njee, it never fails to amaze me how many people state things as fact when they haven't bothered to checkTheir assumptions.

I can assure you that Connex power links are directional. Take a look at the destructions, then feel free to come back an admit you're fallibility.

Connex links are directional but the OP has a Sram chain and , as stated by Njee powerlinks , which are a Sram product and not Connex are not directional .


 
Posted : 08/10/2013 5:27 pm

6 DAYS LEFT
We are currently at 95% of our target!