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Old 07-28-11, 06:59 PM   #1
>>ECB<<
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Velocity Aerohead O/C offset?

Lately, I've been interested in getting a Velocity Aerohead O/C (in a 622 BSD) for a wheelbuilding project. The problem I'm running into is that the numbers on the rim's lateral offset are not consistent from site to site. QBP claims that it is 3.0 mm, while Velocity claims that it is 4.0 mm.

So, I'm not sure who is right, and would rather not risk pulling the trigger on an Aerohead O/C until I have some more-definite number I can plug into Spocalc.

Has anyone had an opportunity to measure the lateral offset on an Aerohead O/C? If so, what kind of number did you get?

TIA,

ECB
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Old 07-28-11, 07:14 PM   #2
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The diff in 3.0-4.0 will mean maybe a .25mm to .50mm diff in spoke length.

You are making a molehill out of an anthill...seriously.

Just use Velocity's figure, build the darn wheel and ride.

Just one caveat though...these are light weight rims and like the Mavic Open Pros are light weight racing clinchers. Not quite - but pretty darn close. They won't last forever - aren't everyday commuter rims. As you finish tensioning them you'll notice the sides of the holes will start to bulge a little - which is common with thin and very light weight racing clinchers.

Overall, they are nice rims while they last. American Classic likes to use 'em.

=8-)
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Old 07-28-11, 07:51 PM   #3
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I built a set of Velocity wheel with the o/c rear and used the spoke length they recommended. Cannot say enough good things about the wheel....much more even tension between DS and NDS and the dish is much easier. Great set of hoops, I used fusion on the front with a radial lace and the o/c rear 3 cross, dropped about 1.25 pounds off the bike with the previous bombproof but heavy wheels.
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Old 07-28-11, 07:55 PM   #4
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Originally Posted by deacon mark View Post
I built a set of Velocity wheel with the o/c rear and used the spoke length they recommended. Cannot say enough good things about the wheel....much more even tension between DS and NDS and the dish is much easier. Great set of hoops, I used fusion on the front with a radial lace and the o/c rear 3 cross, dropped about 1.25 pounds off the bike with the previous bombproof but heavy wheels.
The Fusion front is a heavy rim...gonna change to Aerohead front later as well?

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4000+ wheels built since 1984...

Disclaimer:

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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