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Old 10-31-14 | 03:34 PM
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Bravin Neff
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Joined: Jul 2012
Posts: 82
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From: Detroit

Bikes: 2009 Specialized Tarmac, 2008 Cannondale Quick 4, 2009 Jamis Coda Comp

Winter IGH Conversion Project

I'm thinking about converting one of my derailleur hybrids to an IGH bike this winter. Its a 2008 Cannondale Quick 4 hybrid, it is used for commuter/fun/pull-kids duties. I have some general questions.

1. Shifters. I can't stand the "backwards" (by my lights) orientation of Shimano Alfine/Nexus shifters. This applies to both the grips and triggers. This is a big enough deal I will avoid Shimano if this can't be remedied. Can it be remedied? I'm not yet married to grip or trigger, but I am married to directionality.

2. Sturmey Archer has the right direction shifter. I'm attracted to their 5 speed, but reviews say they're really noisey/ratchety. I have never seen one. Thoughts?

3. What do you think of that S-A 8 speed? It has weird ratios where first gear is 1:1; consequently you end up with a very small front chain ring to get a reasonable gear-inches range. Thoughts on that?

4. Technical question: My current bike is 3-front/8-rear. How does one get the chainline correct during an IGH conversion? I assume its not trial and error, but something like buying a front crank with the correct chainline. Is that correct? Is there wiggle room for fine tuning the chainline?

5. I have analyzed my actual biking habits, and it seems I fall predominantly in the 32(ish) to 90(ish) gear inch range. That's a 280% spread, and several IGH's seem capable of satisfying it: Shimano 7, Shimano 8, S-A 5, S-A 8. I dislike the uneven steps of the Shimano 8, which surprisingly bothered me when I tested one. Maybe I could live with it. Heck, maybe I could make a 3-speed work. Thoughts?

6. Anything else you want to add.

Thanks.

Bravin Neff

Last edited by Bravin Neff; 11-01-14 at 10:49 AM.
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