Author Topic: Replacing track chain  (Read 1991 times)

DaT

Replacing track chain
« on: March 15, 2019, 06:50:14 pm »
Should I be replacing my chain on my fixed wheel bike at 0.75 elongation like a bike with a dérailleur? I've only done 1,062miles and it's already at 0.75.

The Solo Socialist

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Re: Replacing track chain
« Reply #1 on: March 15, 2019, 07:29:01 pm »
I would say so if not chainring and cog will be next.
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jiberjaber

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Re: Replacing track chain
« Reply #2 on: March 15, 2019, 08:56:12 pm »
Should I be replacing my chain on my fixed wheel bike at 0.75 elongation like a bike with a dérailleur? I've only done 1,062miles and it's already at 0.75.

I went through my first chain quite quick, similar distance, after a thread on here, I switched to Pearl Izumi and it's been a lot better!
Regards,

Joergen

Re: Replacing track chain
« Reply #3 on: March 16, 2019, 11:45:50 am »
On a fixie (or any non-derailleur bike) you can run the chain and sprocket into the ground, especially if you have even-numbered sprocket and chainring and you always put the chain back in the same phase with the sprocket teeth.  Nothing is going to slip.

If you're using £50 sprockets you might want to change the chain at 1/16" per foot.
And Darkness and Decay and the Coronavirus held illimitable dominion over all.

Re: Replacing track chain
« Reply #4 on: March 18, 2019, 05:15:43 pm »
I assume if you're changing your sprockets semi regularly for gearing reasons, you probably want to change the chain more frequently? Or maybe even have one chain per sprocket?

DaT

Re: Replacing track chain
« Reply #5 on: March 19, 2019, 04:40:48 pm »
Well the kmc K810sl didn't last too well. Can anyone recommend me a 3/32 track chain? I would prefer to shell out and get light and durable rather than cheap and crap.

Re: Replacing track chain
« Reply #6 on: March 22, 2019, 06:45:32 pm »
For my 3/32 fixed transmission, I've been using a KMC Z610.  Easy to rivet up (if you prefer not to use the spring link). Seems to do the job quietly and lasts for over 2000 miles. Its inexpensive, but a little on the heavy side - if that's important for you and, well, not very pretty.

The Z510 is the 1/8 version.

DaT

Re: Replacing track chain
« Reply #7 on: March 22, 2019, 07:02:32 pm »
I've gone with the Wippermann connex 708 chain.
https://www.connexchain.com/en/product/connex-708.html
Pretty light, £11 and if it lasts well I can pick them up for £7 from Germany. I used to run Wippermann on my Moulton as you could get them with 120 links and it lasted well on that.

Re: Replacing track chain
« Reply #8 on: December 09, 2019, 09:22:20 am »
changed the drivetrain and there is a lot of noise from it. So new chain (KMC B1) new ring and sprocket - all 1/8". Chain isn't bar-taut but the noise disappears once the drive train is going at a pace. It's under load that it's noisy. Any suggestions on making it quieter?

Re: Replacing track chain
« Reply #9 on: December 09, 2019, 06:32:56 pm »
How good is the chainline?  Have you checked it with an actual straight edge?  Measuring it front and rear assumes the frame is millimetre-straight, and few are.

The B1 is a bushed chain and will not be happy with the slightest error in chainline.  A bushingless chain, like a SRAM PC-1, won't care.

And Darkness and Decay and the Coronavirus held illimitable dominion over all.

Re: Replacing track chain
« Reply #10 on: December 12, 2019, 01:37:41 pm »
i suspected the chain but in my ignorance I thought they were basically the same (obviously some are thicker than others).

Re: Replacing track chain
« Reply #11 on: December 12, 2019, 09:09:02 pm »
Well the kmc K810sl didn't last too well. Can anyone recommend me a 3/32 track chain? I would prefer to shell out and get light and durable rather than cheap and crap.


Erm ... track chains are 1/8. Almost all 3/32 chains have flexibility built in for gear changing.
It’s fine, by the way, to run a 1/8 track chain with a 1/8 sprocket but a 3/32 chain ring if you wish

Re: Replacing track chain
« Reply #12 on: December 13, 2019, 06:29:22 am »
Given that you can buy 3/32" NJS-marked track sprockets, someone must use 3/32" on the track.
And Darkness and Decay and the Coronavirus held illimitable dominion over all.

Re: Replacing track chain
« Reply #13 on: December 13, 2019, 09:55:10 am »
I imagine they use whatever multi speed road chain they fancy. There are lots of ways the track environment is *less* demanding than the road.

Re: Replacing track chain
« Reply #14 on: December 16, 2019, 01:04:28 pm »
How good is the chainline?  Have you checked it with an actual straight edge?  Measuring it front and rear assumes the frame is millimetre-straight, and few are.

The B1 is a bushed chain and will not be happy with the slightest error in chainline.  A bushingless chain, like a SRAM PC-1, won't care.

I salute you and your knowledge :thumbsup:. A cassette spacer has lowered the noise level. I've prob not run a bushed chain on the fixed before.

bludger

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Re: Replacing track chain
« Reply #15 on: December 16, 2019, 01:08:49 pm »
Unfortunately I think I replaced my own track chain a tad late - I think the sprocket is done as if I bang the cranks around while the bike is still, the chain jumps about on the sprocket. I think that's what's making the din.

The good news is I've got a few sprockets kicking around at home. I don't think the chainring is too badly worn but I suppose I'll find out...
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Re: Replacing track chain
« Reply #16 on: December 16, 2019, 09:24:31 pm »
How good is the chainline?  Have you checked it with an actual straight edge?  Measuring it front and rear assumes the frame is millimetre-straight, and few are.

The B1 is a bushed chain and will not be happy with the slightest error in chainline.  A bushingless chain, like a SRAM PC-1, won't care.

I salute you and your knowledge :thumbsup:. A cassette spacer has lowered the noise level. I've prob not run a bushed chain on the fixed before.
Under a threaded sprocket?  How thick is it?  This can work but there is a risk of stripping the threads if there's not enough engagement; try to have at least four full threads engaged.  I have a 1.6mm SA spacer under the Surly sprocket on my commuting fixie but it survived White Horse Hill in the summer* so it must be ok.

*the steepest bit is 18%
And Darkness and Decay and the Coronavirus held illimitable dominion over all.

DaT

Re: Replacing track chain
« Reply #17 on: December 17, 2019, 07:10:06 am »
Just thought I'd say that I ended up buying an izumi chain and after around 4,000 miles it's only at 25% worn. Picked up another one to have on hand for when it does eventually die.

JonB

  • Granny Ring ... Yes Please!
Re: Replacing track chain
« Reply #18 on: December 17, 2019, 09:28:59 am »
Just thought I'd say that I ended up buying an izumi chain and after around 4,000 miles it's only at 25% worn. Picked up another one to have on hand for when it does eventually die.
Interesting, I use the cheap KMC chains and don't get anywhere near that distance. I bought a couple of Izumi's on a recommendation and found it noisy and have never fitted the other one but given that kind of longevity I think I'll give it another go next chain change.

Re: Replacing track chain
« Reply #19 on: December 17, 2019, 09:35:12 am »
How good is the chainline?  Have you checked it with an actual straight edge?  Measuring it front and rear assumes the frame is millimetre-straight, and few are.

The B1 is a bushed chain and will not be happy with the slightest error in chainline.  A bushingless chain, like a SRAM PC-1, won't care.

I salute you and your knowledge :thumbsup:. A cassette spacer has lowered the noise level. I've prob not run a bushed chain on the fixed before.
Under a threaded sprocket?  How thick is it?  This can work but there is a risk of stripping the threads if there's not enough engagement; try to have at least four full threads engaged.  I have a 1.6mm SA spacer under the Surly sprocket on my commuting fixie but it survived White Horse Hill in the summer* so it must be ok.

*the steepest bit is 18%
I stripped the threads on my fixed/fixed wheel in the summer - 2 spacers and a plastic wheel cover meant too few threads engaged.  :'( Thankfully the other side is OK.

Re: Replacing track chain
« Reply #20 on: December 17, 2019, 10:05:18 am »
Just thought I'd say that I ended up buying an izumi chain and after around 4,000 miles it's only at 25% worn. Picked up another one to have on hand for when it does eventually die.
Interesting, I use the cheap KMC chains and don't get anywhere near that distance. I bought a couple of Izumi's on a recommendation and found it noisy and have never fitted the other one but given that kind of longevity I think I'll give it another go next chain change.

Izumis are noisy but wear pretty well.   I get through 3 or 4 a year across 3 bikes.   They supply so many links that I have built a complete chain out of the leftovers I found in the tool box.

JonB

  • Granny Ring ... Yes Please!
Re: Replacing track chain
« Reply #21 on: December 17, 2019, 10:53:59 am »
Izumis are noisy but wear pretty well.   I get through 3 or 4 a year across 3 bikes.   They supply so many links that I have built a complete chain out of the leftovers I found in the tool box.
Ha, I've just done the same thing with KMC left overs  :thumbsup: