Thorn Cycles Forum
Technical => Transmission => Topic started by: ianp on April 01, 2006, 01:05:38 AM
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I need to replace my chain and cassette after about 3000 miles, is that reasonable?
Drivetrain: Shimano 9spd
Chain: 9spd XTR
Cassette: 9spd Ultegra 11-23
Lubricant: regularly applied - White Lightning http://www.whitelightningco.com/ (used from day one - degreased chain first to remove shipping grease.
Rider: 100kg - 16st
Cadence: lower than it should be
Torque: High (180mm cranks, long legs, fit rider)
Conditions: Mostly dry weather commuting (Australia), some toddler trailer towing.
I am happy with gear ratios but wonder if I should be able to get better mileage out of say sram pc99 or a rohloff chain and whether my choice of lubricant has been a factor.
Regards,
Ian
Bike: XXL Thorn Nomad
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3000 miles sounds about right for a chain (I get 2000-3000). Can't comment on the Ultegra cassette but I get about 7000-9000 out of a SRAM cassettes (much wider ratio 13-32?). I am a bit lighter at about 13st, it rains every 3rd day round here (South Wales).
I prefer SRAM chains. Never had any problems with them or the Powerlink.
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You can run mulpiple chains, swapping them over every 500 miles or so. That way your cassette will last say 5 x 3000 miles if you run 5 chains. I agree with stutho re sram chains - the powerlink makes chain removal/swapping easy.
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Thanks guys, I didn't realise people rotated chains so frequently, tho it had been at the back of my mind for a while that I was risking the cassette by running the chain so long.
I too prefer sram (or sachs as it was) I had these on my old commuting bike and mountain bike when I lived in London and the power transfer always seemed smoother and more assured than with the shimano chains. I have put the lightly used pc99 from the mountain bike on my nomad now but think the cassette is too far gone.