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Chain rust... wtf?

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  #1  
Old 08-03-2020 | 03:24 PM
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Default Chain rust... wtf?

Put this chain and sprocket kit on just under 5,000 miles ago in December. I don't ride in rain, lube/wax the chain every 5-600 miles (clean every other time), and am fanatical about checking proper tension. How the hell am I getting internal rust, as well as some very slightly kinked links already?

I'm assuming I need to change it asap but just want another opinion to confirm. Also, with only 5,000 on the sprockets, could I just replace the chain or should I go ahead and just start fresh with everything?

Thanks!

 
  #2  
Old 08-04-2020 | 03:16 AM
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I would definitely be replacing the chain at the very least, with low mileage like that you might get away with keeping the sprockets but you may get a reduced life out of the replacement chain.
I lube my chain every 400km or so and on most of my bikes have managed to get 20-25,000km out of a set of chain and sprockets. I use DID chains because you get what you pay for.
I always apply the lube (Motul spray lube) when the chain is warm after a ride and let the solvents evaporate before I use it again.
I also clean it with kerosene about every 1,000km or so and inspect it for wear.
I run my chain tension closer to the upper limit to put less stress on the chain, normally around 25mm (1 inch) measured at the tightest part of the chain.
Good luck with your next one.
 
  #3  
Old 08-04-2020 | 05:57 AM
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do you live somewhere cold &humid? thinking maybe condensation at night could do it, doesnt take much for it to rust apparently as ive developed rust overnight after a light rainy ride🤷‍♀️
 
  #4  
Old 08-04-2020 | 07:06 AM
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Originally Posted by Buzz22
I would definitely be replacing the chain at the very least, with low mileage like that you might get away with keeping the sprockets but you may get a reduced life out of the replacement chain.
I lube my chain every 400km or so and on most of my bikes have managed to get 20-25,000km out of a set of chain and sprockets. I use DID chains because you get what you pay for.
I always apply the lube (Motul spray lube) when the chain is warm after a ride and let the solvents evaporate before I use it again.
I also clean it with kerosene about every 1,000km or so and inspect it for wear.
I run my chain tension closer to the upper limit to put less stress on the chain, normally around 25mm (1 inch) measured at the tightest part of the chain.
Good luck with your next one.
My stock chain lasted just over 20,000 miles with my current cleaning regimen so I'm pretty shocked that this one barely lasted 5,000. Looks like I need to make some modifications!

Thanks!

Originally Posted by SunBlue
do you live somewhere cold &humid? thinking maybe condensation at night could do it, doesnt take much for it to rust apparently as ive developed rust overnight after a light rainy ride🤷‍♀️
Well, right now it's hot and humid! Surface rust wouldn't surprise me but internal rusting? Pretty disappointed but looks like I need to make some maintenance changes...
 
  #5  
Old 08-04-2020 | 08:58 AM
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20,000 miles is a great run for a chain, you're obviously doing the right things. If you haven't been doing anything different maybe this chain was just a dud?
 
  #6  
Old 08-04-2020 | 12:13 PM
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Originally Posted by Buzz22
20,000 miles is a great run for a chain, you're obviously doing the right things. If you haven't been doing anything different maybe this chain was just a dud?
Perhaps... Decided to go ahead go back 525/stock sprockets for now. I did enjoy the increased acceleration but it's not like it was hurting for it before...
 
  #7  
Old 09-02-2020 | 09:23 PM
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Salty air perhaps?
 
  #8  
Old 09-03-2020 | 05:19 AM
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Only if I were sprinkle it on the chain... lol.

No, I'm pretty sure it just wasn't a very good chain (had to adjust it frequently). Not a great loss as the heavier one I have now is holding up nicely...
 
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