I use a digital diet scale which resolves to the tenth of an ounce, which is 2 or 3 grams. I've weighed both Fiamme Ergal and Mavic GEL280 rims and found them to be about 280 and 295 grams, respectively.
Since you ask about "lightweight sewup wheels" I'll repeat what I use on my modern bike: Fiamme Ergals in 28h front and rear, laced 3x all the way around with 15/16/15 spokes and alloy nipples. Modern hubs: an American Classic Micro front hub and a World Class Campy 8-speed rear with Ti body. The wheels weigh 1200 grams together: 500 for the front, 700 for the rear.
I've horded a few lightweight sewup rims because I want enough to last my lifetime and I see no compelling reason to use anything newer.
-S-
Rick Chasteen wrote:
>
> Here are some rim weights that may be of interest. All were weighed on a Pitney Bose postal scale with a large, dial type display and a capacity of 4 pounds. In comparing this with other scales over the years, I have found it to be accurate. Each rim was weighed several times to check consistency.
>
> The Mavics and Campagnolo are new. The Super Champions are used. The Campagnolo is aero section and has no eylets.
>
> Mavic Open Pro, 700c, silver: 36h-1 at 425 grams, 1 at 439
> 32h-2 at 425 grams
> 28h-2 at 397 grams
>
> Campagnolo Aero Omega, hardox: 28h-1 only, 454 grams
>
> Super Champion Gentleman 81: 36h-2 at 482 grams.
>
> I am surprised that the Super Champs weighed in below 500 grams and amazed that the 28h Mavics weigh only 397 grams!
>
> I'm going to build the 36h Mavics this week with Revolution spokes and alloy nipples on Record high flange hubs. I'll post the completed wheel weights when I'm finished.
>
> Does anyone else have rim or complete wheel weights? I'd be particularly interested in lightweight sew up wheels.
>
> Rick Chasteen
> Kansas City
>
> _______________________________________________
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Steve Freides