alienator said:
IF a flexy wheel is your problem, then in cornering, especially fast cornering, the effect of wheel flex is only a real factor in corner entry and corner exit. I think with a rear wheel, you'd most likely see the effect powering out of a corner. During corner entry, under braking, the rear wheel is unloading a bit. Mid corner, flexibility is a non-issue as the wheels are in a dynamic quasi-equilibrium.
Riding flats, climbing, or sprinting wheel flex isn't really the issue that it's made out to be. From a performance point of view, energy losses due to wheel flex are negligible. Moreover, it's questionable whether riders can actually feel wheel flex or not. Mavic did a study and found that riders could NOT reliably determine whether a wheel they were riding was a noodle or was stiff enough to withstand a winter siege in Stalingrad.
Alas, as humans we do what feels good, and iffin' it don't feel good we get doubts. It doesn't matter whether the doubts are from real or imagined phenomena.
Before you make the leap and buy new wheels, you should try some simple things first. Try a 25 on the rear instead of a 23. Try a range of air pressures, both lower and higher. Have the wheel checked for trueness and spoke tensions. When spoke tensions have gone all pear shaped, that's never good juju for a wheel.
If none of that changes things, then maybe it's time to doll out some pesos for new wheels, but iffin' you want new wheels, I'd bypass boutique wheels and go straight for the custom built wheels. For half the price of boutique you can get customs that out perform, in every way, the boutique kit.
There's some good advice here ...
BUT, this has to be at least the third time you've cited the MAVIC "
study" (BTW. MAVIC is an acronym) as if it were gospel ...
I read Zinn's synopsis of MAVIC's study on VelonNews.com when he first reported the "
study" but I have never seen the actual data ... was it published anywhere?
Have YOU seen the actual data from MAVIC's tests?!?
I suspect that as far as anyone knows, the difference in tension may have been minimal when one considers the actual range of possibility -- e.g., Shimano WH-7700 vs. almost any other "factory" wheel OR a regular, "benchmark" 32x3 wheel ...
Which wheels were used in the test?
AND, that begs the question -- did Shimano abandon the paired spoke design because they chose not to pay the licensing fee to ROLF or was it something else?
Is the WH-7800 laterally stiffer than the WH-7700?
Did the four extra spokes make the WH-7800 wheel laterally stiffer or only comparable to the paired spoke design of the WH-7700?
Santana had/(still has!) their version of the WH-7700 which is spec'd with a larger (
13?) gauge spoke ... unsold inventory remains, AFAIK ... it would probably be a great wheel for a single rider after adjusting the O.L.D. to 130mm.
Regardless, just because someone is a "professional rider" does not mean that s/he is able to ascertain meaningful differences in many aspects of the components on the bikes they ride -- did the MAVIC test(s) actually measure how long it took to cover fixed distances (flats, climbs, desecents) in addition to the rider's subjective feedback?
How many riders were used & how many repititions of the test were run?
What was the sequence of comparison? Soft-firm? Firm-soft? Soft-firm-soft? Firm-soft-Firm?
I suppose that if YOU/(are there any others?) repeatedly
verbalize the so-called conclusion of the MAVIC test that a rider cannot tell the difference between wheelsets often enough then it could eventually have the same
imprimatur amongst the naive as "the myth of K.O.P.S" (in the words of Keith Bontrager) and/or the use of double butted spokes and/or how Man's use of SUVs has caused "global warming" on the moons of Jupiter, etc.
BTW. A cynical person might be able to infer from MAVIC's test that they were actually trying to see how lax their quality control could be -- that is, how frequently (if ever) they had to calibrate their gauges ...
Regardless, people should buy-and-use what they want, but
caveat emptor ...
Heck, if someone thinks that a wheel's lateral stiffness doesn't matter & s/he wants to buy a pair of 16-spoke wheels, I've got a pair I can sell!