Hi, I am moving to Annecy France this Fall and am looking for a new wheelset to ride in the mountains. I am strongly considering the Lightweight Gipfelsturm but am concerned about wheel flex at higher wattages. I am a 75kg rider. My question is: at what wattage levels will I begin to get wheel flex? Should I consider the Meilensteins instead (I am concerned about cross winds on descents and am opting for a lower profile wheel with the Gipfelsturms)?

Also, which wheels are better at dissipating brake heat: the Gipfelsturms or the Meilensteins? Should I be concerned about long mountain descents and brake heat affecting the Gipfelsturm rims?

Also, are the Obermayers as stiff as the Meilenstein Standard? Or is some stiffness lost with the different construction method and carbon savings?

Any and all thoughts are appreciated. Thanks.

You should find most answers in lloyds posts, he is good with emails too for your specific power questions - http://windinmyface.com/Lightweight-Ventoux.html" onclick="window.open(this.href);return false;

I share your concerns re: winds on descents and prefer the lower section on lightweight front wheel

Not sure about the comparative heat dissipation. As I understand most the work went into improving the clincher layup of the Meilensteins, a good thread here - viewtopic.php?f=3&t=100549" onclick="window.open(this.href);return false;

I am aware though from CS that the gipfelsturms use the same rims and front wheel construction the 240 ventoux - (except the rear hub has been updated to a 190 shell / build).

Hope this helps & have fun on your trip

http://windinmyface.com/Lightweight-Ventoux.html" onclick="window.open(this.href);return false; seems like a pretty good review. But I found the following to be hilarious He did say "perhaps", but the ceramic rear bearings being responsible for greater comfort - puhleaaaase? So I guess ceramic bearings are laterally stiff while being vertically compliant. or something?

Does the GIPFELSTURM use the same hub which Ventoux 190 used, combined with a DT Swiss 190 rear hub (which was used in Ventoux 190)? If I recall correctly, the Ventoux 190 not only used a different rear hub than Ventoux 240 (DT Swiss 190 vs. DT Swiss 240), but a different model of CarbonSports' own front hub as well - is that correct? And is there no GIPFELSTURM (or whatever name) which has a DT Swiss 240 rear hub?

Edit: I meant to write "Does the GIPFELSTURM use the same hub which Ventoux 240 used ...". Per dcaspira, the answer is yes.

@HammerTime2

Email I received from CS (Andreas) about the Gipflesturm

Front wheel: technically identical to Ventoux 240
Rear wheel: new construction – a mixture of Ventoux 240 and Ventoux 190. Rim 240, hub 190 but steel bearings instead of ceramic

I believe CS uses the 190 body to reduce weight, but don't use ceramic bearing as they believe steel are more robust for bike wheel applications & ceramic are harder to accurate seat with carbon tolerances - I recall reading this directly from CS in this forum somewhere...

I weigh about the same as you. I find that the Std Lightweights have virtually no flex. Then the Obermayers with just a tiny amount. Then the Ventoux which have noticeably more flex but less than most popular wheels.

I ride the Ventoux wheels on very windy days and they do help with not getting blown around.

I ride the Ventoux and I don't find them "flexy" for my 82kg. I like their comfort a lot. They also react really well on cross winds and sudden gusts.

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Wilier Cento Uno
Colnago Master X-light
Wilier 18carati

Slightly off topic...

Have Lightweight stopped the crash replacement warranty cover?

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Caad10 with Campagnolo

The ServiceUp policy is available on all wheels still. PM me if you have any questions.

I've done the Semnoz dozens of times, so can advise on that; be sure to give us a full reportage with oodles of pics on the Mavic factory.

Correct. Two reasons to use steel instead of ceramic:

• robustness combined with almost no disadvantage in weight (a complete steel vs. ceramic setup in the rar hub (4 bearings) differs less than 3g!)
• price

No! How comes you ask?
There still are two different types of "warranty":

• crash replacement => just register your wheels via the online form on our website; no time limit anymore to do that!
• ServiceUp => apply for ServiceUp within 5 days after buying the wheels via the online form; registration is included automatically

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Andreas Schiwy, CarbonSports GmbH
http://www.lightweight.info
support[at]lightweight.info