Talk to me about fixed and single speed

Re:

I just put another two links in the chain on my 12-speed. Now 108 (edit:110) links. Here's the resulting new tooth visitation schedule of the marked link:

42 Ring: 1,27,11,37,21,5,31,15,41,25,9,35,19,3,29,13,39,23,7,33,17.
52 Ring: 1,7,13,19,25,31,37,43,49,3,9,15,21,27,33,39,45,51,5,11,17,23,29,35,41,47.

Every odd-numbered link is visited in both rings. But A fixed/SS chain is I guess 8-16 links shorter than a derailleur chain, so the question is, how many links do you remove from the chain to maintain this?

..and that, kiddies, (that includes me) is probably why the old 'long' dropouts had an inch's worth of adjustment- so you could refine your fixed/SS chain length by two links, or even four links, to get all your teeth visited, and still get your chain tension right..
 
Re: Re:

torqueless":qex1kexi said:
I just put another two links in the chain on my 12-speed. Now 108 links. Here's the resulting new tooth visitation schedule of the marked link:

42 Ring: 1,27,11,37,21,5,31,15,41,25,9,35,19,3,29,13,39,23,7,33,17.
52 Ring: 1,7,13,19,25,31,37,43,49,3,9,15,21,27,33,39,45,51,5,11,17,23,29,35,41,47.

Every odd-numbered link is visited in both rings. But A fixed/SS chain is I guess 8-16 links shorter than a derailleur chain, so the question is, how many links do you remove from the chain to maintain this?

..and that, kiddies, (that includes me) is probably why the old 'long' dropouts had an inch's worth of adjustment- so you could refine your fixed/SS chain length by two links, or even four links, to get all your teeth visited, and still get your chain tension right..

I didn't think the length of chain had any bearing?
 
Re: Re:

torqueless":1zgwl29m said:
42 Ring: 1,27,11,37,21,5,31,15,41,25,9,35,19,3,29,13,39,23,7,33,17.
52 Ring: 1,7,13,19,25,31,37,43,49,3,9,15,21,27,33,39,45,51,5,11,17,23,29,35,41,47.

That looks to me like 110 links.

Keith
 
Re:

keithglos":ofclwyq7 said:
torqueless":ofclwyq7 said:
42 Ring: 1,27,11,37,21,5,31,15,41,25,9,35,19,3,29,13,39,23,7,33,17.
52 Ring: 1,7,13,19,25,31,37,43,49,3,9,15,21,27,33,39,45,51,5,11,17,23,29,35,41,47.

That looks to me like 110 links.

Keith

Just had a recount. You are right Keith. Which means it must have been 108 before. :oops: Having lost all counting credibility, I will go back and edit my posts..

@PeachyPM:

You should read LongboardSi's and mattr's posts on page 4
 
Re: Re:

torqueless":ojj7dpdh said:
@PeachyPM:

You should read LongboardSi's and mattr's posts on page 4


Did that first time around, just read them again, still confused :facepalm:
 
Simple arithmetic, 52 x 2 +6, so the chain advances (or retards) 6 teeth every revolution of the chain.

Keith
 
Crystal :facepalm:
 

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