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TIme has come to change the chain after 7,496.9 KM. Chain is starting to slip gears.

I was using Sram PC1051 on my 10 speed 52/39 & 11/25 cassette.

I will probably get the Ultegra 6701 to see how that compares to the Sram pc1051. Not decided yet.

Altough my real question is... Once I'm changing the chain, I was considering to change also the cassette.

For the pictures below do you think that either/or the cassette and the Jockey wheels need to be changed?

https://www.instagram.com/p/BiC4IPaj1x0/?hl=en&taken-by=guinom8

I know I could easly bring to the shop but I would like to know these things myself and maintain my bikes myself.

Would you belive the local bike shop wanted to charge me 35 euro to change cassettes from one brand new wheel to another brand new wheel? I bought the tools for 28 euro and changed it myself..

 

All commend and feedback more than appreciate.

 

Thank you.

 

18 comments

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guinom8 [22 posts] 2 months ago
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Just uploading the pictures here to make it easy.. thanks guys.

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guinom8 [22 posts] 2 months ago
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.

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guinom8 [22 posts] 2 months ago
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Jockey wheel

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guinom8 [22 posts] 2 months ago
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.

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check12 [220 posts] 2 months ago
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Look ok to me but the new chain, I’d go with a kmc x10 cheaper or posher version is up to you, you get a quick link included so no messing about with a shimano joining pin needed. 

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guinom8 [22 posts] 2 months ago
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check12 wrote:

Look ok to me but the new chain, I’d go with a kmc x10 cheaper or posher version is up to you, you get a quick link included so no messing about with a shimano joining pin needed. 

 

THanks Check 12.

 

I thought and research about KMC X10-SL DLC, but I don't think I'm  willing to spend 82 euro in a chain. I have used KMC before and this time Sram, however I don't remember using shimano before.

Shimano Ultegra 6701 has very good reviews. Doesn't KMC manufacture shimano chains? Therefore, isn´t shimano chains actually KMC'a?

I won't bother usint shimano joining pin.. Will use a quick link instead as it can be used with shimano chains.

 

 

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ktache [824 posts] 2 months ago
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I find jockey wheels get pointy as they wear, or the bearings seize, always difficult to tell about the cassette.

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Simon E [3336 posts] 2 months ago
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guinom8 wrote:

Shimano Ultegra 6701 has very good reviews. Doesn't KMC manufacture shimano chains? Therefore, isn´t shimano chains actually KMC'a?

Yes, I believe KMC manufacture Shimano chains. A KMC X10-93 or Sram PC1051 would be fine.

If the new chain slips on your cassette then the cassette will need replacing too - if you don't then it will cause rapid wear to the new chain.

The jockey wheels look fine. If the sleeve inside is not rusty just clean, regrease and refit.

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wycombewheeler [1327 posts] 2 months ago
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buy sram red chains, they just last better than shimano, and they come with quick link.

jockey wheels look fine

after 7000km and with the chain already slipping gears I would do the cassette at the same time.

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StraelGuy [1442 posts] 2 months ago
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Agree those jockeys look barely worn. I just but the cheapest chains I can find fo my 11 speed 105, currently the FSA Team chains from Planet X that are always a tenner. Keep an eye on the wear with a chain checker and when it looks like it's about to start dropping through the 0.75% end, chuck a new chain on. I get between 900 to 1,300 miles per chain and haven't had to change a cassette for a long time.

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hawkinspeter [1999 posts] 2 months ago
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I agree with Simon E - change the cassette, but the jockeys look fine (although a bit hairy).

I've been using KMC chains ever since I had a Shimano 6701 chain break. I may have installed it incorrectly, but one of the side plates snapped which I'd never encountered before (or since).

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guinom8 [22 posts] 2 months ago
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hawkinspeter wrote:

I agree with Simon E - change the cassette, but the jockeys look fine (although a bit hairy).

That is what happens when you park the bike for the winter and you have a indoor cat.

 

LIttle correction.. my chainrings are 52/38 and not 52/39. And using 11/25 cassette on a short cage Dura Ace rear derailleur..

 

If I also change the cassette to a 11/28 to rung with my 52/38 in a short cage dura ace rear derailluer...  Will the length of the chain increase?

 

Thanks

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hawkinspeter [1999 posts] 2 months ago
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guinom8 wrote:
hawkinspeter wrote:

I agree with Simon E - change the cassette, but the jockeys look fine (although a bit hairy).

That is what happens when you park the bike for the winter and you have a indoor cat.

 

LIttle correction.. my chainrings are 52/38 and not 52/39. And using 11/25 cassette on a short cage Dura Ace rear derailleur..

 

If I also change the cassette to a 11/28 to rung with my 52/38 in a short cage dura ace rear derailluer...  Will the length of the chain increase?

You shouldn't need to change the chain length for that - it's only a small change.

The other thing to consider is whether your short cage derailleur has the capacity.

From https://guides.wiggle.co.uk/rear-derailleurs-buying-guide:

Your current capacity is (52-38) + (25-11) = 28

Your new capacity is (52-38) + (28-11) = 31

So, your derailleur wouldn't have the capacity for that, and you'd also run into problems with the largest rear cog hitting the derailleur as the "Max cassette size" is listed as 27. You'll need to go for a medium cage derailleur for a 11-28 cassette.

And shave those jockey wheels.

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peted76 [1105 posts] 2 months ago
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Your cassette looks worn to me, best to change it with the chain. 

Ref: chain length, 25 to 28 shouldn't make a difference, here's a calculator for that kind of thing..  http://www.machinehead-software.co.uk/bike/chain_length/chainlengthcalc....

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SpikeBike [96 posts] 2 months ago
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peted76 wrote:

Your cassette looks worn to me, best to change it with the chain. 

Ref: chain length, 25 to 28 shouldn't make a difference, here's a calculator for that kind of thing..  http://www.machinehead-software.co.uk/bike/chain_length/chainlengthcalc....

That calculator is cool! I don't know if it matters but that calculator doesn't take account of derailleur length. If you had a longer cage surely the chain would need to be slightly longer?

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BehindTheBikesheds [2025 posts] 2 months ago
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Looks like the cassette has got plenty of life left in it, buy a SRAM 1031 it'll save you a few quid with no difference in performance, I'm still using a PC1030 after 3 winters on the commuter, decided it was more economical to wear it and the cheap cassette to destruction than spending inordinate amounts of time constantly cleaning and chain swapping (Based on £24 for both cassette and chain)

ATEOTD if it'll make you feel happier simply replace both at the same time and be done with it and if you have a beater bike you could still use the cassette.

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guinom8 [22 posts] 2 months ago
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Thanks guys.. I really appreciate all your inputs.

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MariaMartinez [16 posts] 1 month ago
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SpikeBike wrote:
peted76 wrote:

Your cassette looks worn to me, best to change it with the chain. 

Ref: chain length, 25 to 28 shouldn't make a difference, here's a calculator for that kind of thing..  http://www.machinehead-software.co.uk/bike/chain_length/chainlengthcalc....

That calculator is cool! I don't know if it matters but that calculator doesn't take account of derailleur length.

 

speaking of which try the new FFT chain wear calculator here  http://goo.gl/1RiJN4