Chain jumps, slips, crunches, is dropped - checklist
The reasons for the above behavior often lie in the wear of the chain, the sprockets, or both – but not only. The following...
Chain (sprocket) / pulleys and belts 6 Articles
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Belt torn / has lost teeth
Belt failures are rare on S-pedelecs, as are chain failures. However, both can occur. In the case of a belt, there's also the damage pattern of missing teeth... -
Belt grinds on the frame (ST3 Pinion)
On belt-driven models, the top of the belt may rub against the bottom of the right-hand chain stay.... -
Pulley(s) / belt(s) worn
Belt drives are often touted as low-maintenance and virtually wear-free. However, the often advertised threefold service life compared to the chain is... -
Wear: chain / chainring / cassette / rear derailleur
Chain My chain on the ST3 lasts about 10,000 km. If I change it, I always change the 11 mm sprocket as well. This one... -
Wear: Chainring / Bottom Bracket (Spare Parts)
Switching systems Throughout the model development, Stromer has used a variety of drive systems, gears, and switching systems. These include: Shimano, Sturmey Archer, Pinion, and...