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Weinmann concave rim differences

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Weinmann concave rim differences

Old 08-23-10, 11:09 AM
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ricohman
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Weinmann concave rim differences

A fellow BF'er was nice enough to part with a 700C Weinmann concave so I could have a pair to lace this winter.
But comparing the rims side by side it seems that my rim is wider.
Were there different rim widths in a 700C Weinmann?
I guess I'm back to square one.


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Old 08-23-10, 11:26 AM
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bikemore 
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What size tire are you using? Do they have to be the same? You can pick a tire that will work for both. Have you measured the difference?
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Old 08-23-10, 11:37 AM
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The difference is the width of the lip, or about 1/8 of an inch. I worried that the tire will develop a taller profile on the narrow rim.
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Old 08-23-10, 11:57 AM
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Yes, there were two models of the concave rim: the A-124 was a narrow rim, and the A-129 is a wide rim.
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Old 08-23-10, 11:59 AM
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I think you're being a bit too anal. They look virtually identical, and 1/8" will barely affect the tire profile.
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Old 08-23-10, 12:16 PM
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You could always use 1 1/4 in the rear and 1 1/8 in the front.
I run mavic rims 21mm rear and 18mm front every now and then.
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Old 08-23-10, 01:11 PM
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Originally Posted by JohnDThompson View Post
Yes, there were two models of the concave rim: the A-124 was a narrow rim, and the A-129 is a wide rim.
Thats good info. Thanks.
I guess if I can find another one I will get a matching pair. I'd rather have the wider rims as they are going on a touring frame.
I know its a bit anal. I don't think anyone would ever notice that the front rim was narrower than the rear but I'm a picky guy...
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Old 08-23-10, 08:49 PM
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The wider rim is about 2.5 mm wider. I would think the wider rim would be better for my touring application.
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Old 08-24-10, 07:09 AM
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It's hard enough to tell the difference in width with the two rims stacked up next to each other; There is no way anyone will know there's a difference after you build the narrow one into a front wheel and the wider one into a rear, put tires on them, and put them on a bike.

Remember English bikes used to come with a 40H rear, 32H front; so it's normal and right to have the stronger wheel in back.
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Old 08-24-10, 12:34 PM
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I think you're being a bit too anal. They look virtually identical, and 1/8" will barely affect the tire profile.
But it is one's right to be anal. That said...

I have run across Weinmann concave rims in four configurations - 27" without eyelets, 27" with eyelets, 700c without eyelets, 700c with eyelets and the already mentioned two widths offered in the 700c line.

For my money, if I am going to take the time to restore or refurbish a bike, I would want the rims to match. Anything else would not satisfy my own anal nature.
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Old 08-24-10, 12:36 PM
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In reference to my firs post regarding the different concave Weinmann rims I have run across, allow me to add one more configuration - 26" for use on early eighties mountain bikes. Raleigh often times fitted them to their bikes.
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Old 08-24-10, 02:30 PM
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This may be a daunting task to find the correct rim.
It would be soooo easy to just give in and buy some modern rims......
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Old 08-24-10, 02:56 PM
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Originally Posted by randyjawa View Post
In reference to my firs post regarding the different concave Weinmann rims I have run across, allow me to add one more configuration - 26" for use on early eighties mountain bikes. Raleigh often times fitted them to their bikes.
Yes, they used them on almost half their models for a few years. (In Canada, anyway.) Remember the old Elkhorn with brazed bullmoose bars?
*goes off to Google Images*
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Old 08-24-10, 03:07 PM
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Originally Posted by ricohman View Post
This may be a daunting task to find the correct rim.
It would be soooo easy to just give in and buy some modern rims......
Do that, and give the concaves to someone who doesn't care about 2.5 mm of width difference.
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