joseph.santaniello@[EMAIL PROTECTED]
wrote:
> On May 8, 9:43 pm, Colin Campbell <cmca...@[EMAIL PROTECTED]
> wrote:
>> joseph.santanie...@[EMAIL PROTECTED]
wrote:
>>> Hi All,
>>> I recently bought some pre-built wheels which turned out to not really
>>> be up to the task. So now I am going to build some replacements.
>>> First a little background on wheels I have and their various strengths
>>> and weaknesses.
>>> The pre-builts had 20 bladed radial spokes in front, 24 2x bladed
>>> back. The rear hub had high and narrow flanges. The rear felt ok
>>> (until I broke the freehub), but the front was too flexible. The
>>> brakes would rub when I stood. These had 50mm deep aero section.
>>> My every-day wheels are 28 2x front, 32 3x back. Ultegra hubs,
>>> Velocity Deep-V rims. Those are rock solid and plenty stiff. Just not
>>> very aero, and heavy.
>>> I have also a set of lightweight tubulars which are 28 radial front,
>>> 28 back 2x drive side, radial NDS. These are on American Classic hubs
>>> which are very narrow with virtually no dish, so the radial NDS is
>>> probably dumb. These wheels are very light, but the rear has a
>>> disconcerting springiness to it. My suspicions are that the narrow
>>> flange spacing and radial NDS are the main culprits. I only mention
>>> these wheels are evidence of why I am skeptical of radial NDS.
>>> So on to the new wheels. The rims are 28h 50mm deep carbon. 32 was not
>>> available. The hubs are Dura Ace 7800. Dura Ace have wider flanges
>>> than the AC, so I'm not too worried about the wheels being too floppy.
>>> I want aero, but also I want solid out of saddle feel like my Deep-
>>> V's.
>>> But the question is whether radial up front will provide a more
>>> laterally stiff wheel, or should I go with 2x? Spokes wil be CX-Ray.
>>> On the rear, it will be 2x drive side, but what about radial NDS? Is
>>> there any real reason I should do that? Any reason not to use CX-Ray
>>> on all 28, or should drive side be different? Rider weight 205lbs.
>>> Joseph
>> Joseph,
>> Be sure you weigh the wheels you have, including the "every day"
wheels.
>>
>> I was surprised recently to learn that my shop-built wheels on one bike
>> were NOT tons heavier than the pair of Bontrager Race Lite wheels that
I
>> recently took off of the other bike. I only got as far as weighing the
>> rear wheels, but the Campy Record/32 DT Swiss spoke/Velocity AeroHead
>> wheel with the Record cassette on it was only 90 grams heavier than the
>> 24 spoke Race Lite, without a cassette. Unless the Ti/Steel cassette
is
>> awfully light, I was going to do a swap and end up with a heavier rear
>> wheel and bike.
>>
>> Now I'm reduced to switching from wire bead Vittoria Rubinos to folding
>> Rubino Pros to save any more weight. There are 160 grams to be gained
>> there.
>>
>> I may have to start eating carefully again....
>
> My Ultegra/Deep-V's aren't that bad, but my lightweight set (built
> myself) beats them by about 1100g!
>
> The new ones I'll be making with the DA hubs will be well heavier than
> those, but still quite a bit lighter than the every day wheels. But
> most im****tantly, they will be much more aero. Once done, I will have
> 3 wheelsets each with a distinct character: rugged, light, aero.
>
> Joseph
Then you'll need four more legs on two more bodies, so that you can use
them all!
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