Bicycle Mechanics - chain cover
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02-26-08, 09:48 PM
It seems that for commuting in winter climates one's chain is always battling water and dirt. Why aren't chain covers more popular?
Is it possible to get one for a derailleur drivetrain? I haven't seen much, even for single-speed/internal gearing system.
Reasons for not having a a (fully enclosed) chain cover:
- adds extra weight
- increases wind resistance
- costs more than replacing a worn "standard" chain
- can not fully enclose a derailleur chain + drive train
Reasons for having an enclosed chain cover:
- extends chain's lifetime
- allows for lubing chain excessively with heavy oil, while keeping rider's ankles (socks) clean
- less frequent chain cleaning and lubing
One can install a chain guard that covers only the top and front part of a chain on a derailleur commuter bike. It will protect fairly well against dirt and water projected by the front wheel.
02-26-08, 10:30 PM
A full chain guard, the kind that completely encloses the chain is a pain when you need to remove the wheel to repair a flat. And you are more prone to flats in wet weather. There is also the issue of trying to make one that will work with deraileur drivetrain.
02-27-08, 12:45 AM
They're popular in every country besides the United States it seems
Full chaincases are a singlespeed/IGH afair only but chainguards can be used in a single ring up front and multispeed derailleur in the back.
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