I'll chime in with some guesses why Sheldon declares these "exacrable". The first is that they are heavy. If you want a heavy strong rim, use a Mod. 58. The second is that for all the weight, the alloy is a bit soft and they are not all that strong. No eyelets. Difficult to seat tires and potential to blow off tires because of concave inner surface causing rim strip to interfere with tire bead . A very inelegant rim in my opinion.
Joe Bender-Zanoni Great Notch, NJ
Jerome & Elizabeth Moos wrote:
> I'd like to know also. I have at least one pair built up. Haven't put huge mileage on them, but haven't had any problems. Was the problem in riding them, or were they just difficult to build?
>
> Regards,
>
> Jerry Moos
>
> Big Spring, West Texas
>
> freesound@comcast.net wrote:
> Ok, Sheldon, just curious, but what was so bad about the concaves? I never had a set of my own, but I have a loaner bike from a bud right now, and it seems ok with concave clinchers. Spokes are not as tight as on some vintage tubie wheels I have, but ... ? I always thought they looked cool in stores, back in the day.
>
> Ken Freeman
> Ann Arbor, MI USA
>
> -------------- Original message --------------
> From: Sheldon Brown
>
>
>> Bob Hanson wrote:
>>
>>> The following linked jpeg is from a recently ended auction [not mine].
>>> These are a pair of Weimann alloy rims.
>>>
>>> http://i22.ebayimg.com/
>>>
>>>
>> Back in the '70s, there were two major Weinmann models, the 210 and
>> 256. One of those was the deluxe dimpled version, the other was a
>> simple extrusion. (The execrable concave rims came and went later.)
>>
>> These were THE hot clincher rims in the Bike Boom era.
>>
>> I can never remember which model number was which though.
>>
>> The dimpled rims had 4-way aimed spoke holes. Each spoke hole was
>> not only aimed left/right, but also clockwise/counterclockwise, so
>> the nipple was right in line with the spoke.
>>
>> The legendary Dunlop Special Lightweight rims also had this feature,
>> as do many better quality BMX rims.
>>
>> Sheldon "4-Way" Brown
>> +----------------------------------------+
>> | I never did a day's work in my life; |
>> | it was all fun. --Thomas Edison |
>> +----------------------------------------+
>> --
>> Harris Cyclery, West Newton, Massachusetts
>> Phone 617-244-9772 FAX 617-244-1041
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