Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
The stretch certainly depends on how a given e-bike has been ridden. The motor adds a lot of tensile stress, then there is the matter of rider's cadence, how the gears have been shifted etc. You need to be aware the 1.0 stretch translated to the chain length means a little bit over a millimetre, which is a very small figure. Still, the tolerances on modern cassettes are very tight. Not replacing the chain at the right moment means rapid deterioration of the cassette, and these are very expensive. Not replacing the cassette worn by the worn chain results in the damage to chain-ring, and replacing a chain-ring is hard: hard to buy a replacement, and few of us can replace the chain-ring at home.Oh boy, just hit 1200 miles today, guess I gotta check for stretch, etc. All seems perfect riding, etc. I cannot believe 1.0 stretch on a chain in 1200 miles.
Having said the above, I think replacing the chain in time is far cheaper than subsequent replacing the cassette, or worse, the chainring. The chain gauge costs dimes. If in doubt, the LBS will do chain purchase and replacement for you. However, some shop mechanics may insist the cassette should be replaced, too, and that makes me really unhappy.
Views of other Club members?
I have been capable to clean the Vado cassette only to this shape. Jacek was able to clean the Trance's cassette to the level it looked like a new one.
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