BigSean

Are these wheels really flexy? Or perhaps the spokes were not tensioned properly?

Here is my issue. They came on my new bike. While they ride really nice, until you stand, the wheels are hitting both sides of the brake pads front and rear when I stand and climb. Im not a light weight, but this is happening at only 350 watts.

curiouskid55

Did you see the post with all the pics of pros running their deep sections with the brake release open?

El Diablo Rojo

It may be your rear triangle on that particular frame..do you have another bike to try them on?

carpediemracing 

How tight are your brakes adjusted?

cdr

Brian Ratliff

Also, check your quick release skewers. If they are not tight enough, they might allow the axle to move around slightly in the frame. Especially external skewers; dirt gets into the cam and friction makes it harder to move the lever, making it so you don't tighten the QR enough.

Racer Ex 

I had a set and found them less than stiff. Albeit they were the older non-dimpled versions laced to AC hubs.

ericm979

AC rear hubs have their flanges close together. That makes for a flexier rear wheel no matter what the rim is.

asgelle

Was that in the thread about how all the pro's have their brake release open no matter what type of wheel they have?

BigSean

Ive run another set of 58 mm tubulars and its no problem. With the calipers closed all the way.

BigSean

Im hoping. These came with the bike so they are brand new, but 2009 model. I had my calipers open all the way. Id hope they are not that flexy. I know alot of the pro's run em and they put out alot more power then I ever will . I took the bike and the wheels back to the shop, hopefully they are just not tensioned properly. Downside is Ill sell em and run my Williams 58 mm tubulars instead.One thing for sure, they are 3/4 of a lb lighter and I assume thats all rotating weight, but rubbing negates all and then some.

BigSean

I have noticed that, and I have a few lbs on Cancellara.

Ygduf

only solution is to remove brakes all the way, and brake with your foot wedged against the frame in must-brake technical situations.

BigSean

Just talked to the bike shop. Wheels were a bit light on the tension. Ill go do a climb tomorrow morning, if they rub they are gone, if not I keep em. Ill prolly try a few sprints from 32mph as I just race crits anyway. Then again I could sell em and get a PT from CC and come out ahead.

BigSean

, Its a Jamis Xenith SL there is no flex. Most of the rubbing is coming from the front wheel, go figure huh?

BigSean

You should buy em, your 25 lbs lighter.

bitingduck

everything you never wanted to know about wheel stiffness and aerodynamics:
https://a31.idata.over-blog.com/0/02/...urve_front.gif

BigSean

Thanks, but my old eyes cant read that small print. I could make out the Zipps on the right 1/3 of the list.

Ygduf

I have done 1 race and ride a non-SL3 roubaix. Tubulars currently offend my pragmatist senses; having heavy wheels that I race and train on gives me a good excuse leverage for the times when I just "barely" can't hang on. (similar reasoning as to why I don't shave; as I hope to finish on the podium of non-shaved-legs category)

(also, saving money for a quarq-equipped new frame in the future, new wheels won't be on the list until after that)

BigSean

You know your always welcome to try this bike out with the wheels. We live close by, just let me know. We can meet up at the bottom of OLH if ya want. Tubulars are the way to go, nothing is even close.

wens

control + + is zoom in in every browser I've ever used. Usually control + 0 is default zoom. If that doesn't work zoom options are probably in the menu.

BigSean

Thanks, didnt know that. Funny thing, the zipps are supposed to be way stiffer then my Fulcrum 5's. Hopefully the tensioning will solve it. I will find out tomorrow.

Racer Ex 

Hence the albeit.

On whatever hubs or the old/new tubular rims, I know a lot of people who have broken them (raises hand at Davis 4th crit). It's why I only own their discs. In any case the tensioning should help a fair bit.

I wouldn't take the graph as gospel without reviewing their test protocol.

BigSean

I tend to lean more towards my on the bike test. Im really leaning towards selling them as Id rather have the money and race on the WIlliams which Ive been using with no problems.

bitingduck

better send you some reading glasses... the 404s are about 25% of the way from the left side (stiffer). If you go to the main site (rouesartisinales.com) there's tabulated versions that are easier to read.

bitingduck

They do pretty comprehensive testing of aerodynamics and stiffness-- go to the main site and check it out (rouesartisinales.com). It's pretty interesting if you're into that sort of thing.

The stiffness test is here: https://www.rouesartisanales.com/article-23159755.html