Peter wrote: "Any deflection you see in chainrings is from flexing of the seat tube between the front derailleur and the BB shell, and flexing of the bottom bracket axle. There are no lateral forces on chainrings, except during shifts." ================ Well, basically an OK assumption, providing the chainline is perfectly straight. If it isn't (and it isn't most of the time on any bike with several cogs on the back), then there usually varying amounts of lateral force applied to the rings. Whether this is discernable, or even has any practical implication, I have not a clue.
Neill "Pedantique" Currie Deering, Nh.
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Neill Currie
595-B E. Deering Rd
Deering
Nh 03244
tel: 603-529-6472
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I usually have classic bicycle components for sale at good prices. Please email me for a current list. A reasonably current list may be seen here:
http://www.geocities.com/
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