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Old 05-14-12, 09:56 AM   #1
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new wheel questions (dish and cassette questions)

I'm getting ready to replace the wheels on a Soma cross that I use as an all purpose around town bike. I have it set up currently with a 7 speed rear cassette, ultegra bar cons and shimano derailleurs. The rear triangle spacing is right between 130 and 135 (so you can use either). I have two questions:

(1) I take it that everything else being equal, I should opt for a 135 mm rear wheel since presumably that means somewhat less dish?

(2) I'd like to keep the bike at 7 speeds since I don't want to change out the shifters and rear derailleur (both of which are working fine). Plus the 9 and 10 speed stuff is crazy expensive for a kicking around bike. I take it that if I put the right size spacer behind the 7 speed cassette, I'll be good to go?
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Old 05-14-12, 06:34 PM   #2
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1. Going 135mm means less "appearance" of asymmetrical dish. (There are two operating definitions/descriptions of the concept of dish. One as an "appearance" or adjective and one as "centering" or an action.) It also mean a little more tension for the non-drive side of the rear wheel.

The rim still has to be centered between the ends of the lock nuts either way...the more technically relevant aspect of dish.

2. Yeah, you can go with a spacer behind the 7-speed cassette on an 8/9/10 freehub. Makes future upgrade easier...

4000+ wheels built since 1984...


1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:

Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
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