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chain length & derailleur position

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chain length & derailleur position

Old 04-18-20, 08:36 AM
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southpier
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chain length & derailleur position

I have a 7 cog freewheel & 2 chainring crank. it was a modification of the factory set up when I bought the bike new in 2014 done by the LBS to eliminate the factory granny ring. if I get into the spot where I would need it, i'll get off and hoof heel & toe it it for a bit. that's just how I roll okay for me.*

*edited for the keen eyed readers that lurk among us.

so when I replaced the chain after year one, for some unremembered reason I went with a chain 1 link shorter. everything ran better ???? so I continue my annual routine of replacing the chain with a sram 789 chain. bike shifts fine. I do not ride cross-chained, but only do it to adjust for cable stretch & in/ out limits.

when getting things ready for this season, I noticed that big ring/ big cog leaves the derailleur in almost a horizontal position.

Q: is this a bad thing? *

* remembering, I do not ride in this chain positioning.

thanks

Last edited by southpier; 04-18-20 at 08:48 AM.
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Old 04-18-20, 08:42 AM
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Originally Posted by southpier View Post
I have a 7 cog freewheel & 2 chainring crank. it was a modification of the factory set up when I bought the bike new in 2014 done by the LBS to eliminate the factory granny ring. if I get into the spot where I would need it, i'll get off and hoof it for a bit. that's just how I roll.
Really, that's just how you walk.
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Old 04-18-20, 08:49 AM
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Originally Posted by BCDrums View Post
Really, that's just how you walk.
if I could walk that way, I wouldn't need corn-starch!
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Old 04-18-20, 09:35 AM
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As long as the rear der cage still has some play out available when in the big/big then the worst case of tearing off the der from the frame is pretty much non existent. Chain length does affect the guide pulley's gap to the cog's undersides (assuming a der cage where the cage pivot is not also the guide pulley's). This is the likely reason that the system seems better now.

As a tourist, when I can get time off, I like to run the longest chain possible as one can always repair a chain link issue by removing the link and still retain a big/big combo without issues. But that's my preference. Andy
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