|Giro observation: Lots of high profile aero wheels (not a spoiler)||js5280|
May 30, 2003 1:13 PM
|Anyone else think there's a lot of high profile aero wheels in the Giro? Are there more than in the past, or am I just noticing them now? I'm surprised to see them even on the mountain stages, I'd think that they'd go for something lighter. Particularly for mountain stages with very few flats like the stage the picture below comes from. Why would Garzelli have them in this stage when most of the time he's drafting a teammate and it's an uphill finish? Are they even going fast enough then for the aero to be an advantage? Thoughts?|
|re: Giro observation: Lots of high profile aero wheels (not a spoiler)||purplepaul|
May 30, 2003 1:21 PM
|I've noticed it too. I guess there really aren't significantly lighter wheels available. You'd think a low profile carbon wheel would be a lot lighter than an aero, but it doesn't seem to work out that way. I've wondered why some of the domestiques are stuck riding box sectioned rims when they are the ones in the front where an aero rim would do some good.|
|These wheels aren't this way purely for aero...||eschelon|
May 30, 2003 1:26 PM
|I believe these are wheels made by some German dude/company where the total weight for both wheels are around 1100 grams...the spokes are carbon fiber as well as the rims...these wheels are not used on flat stages...only mountain stages.|
|These wheels aren't this way purely for aero...||purplepaul|
May 30, 2003 1:35 PM
|Granted, that's extremely light. But wouldn't they be lighter with a low profile rim?|
|Low Profile=Too weak||teoteoteo|
May 30, 2003 7:01 PM
|These wheels are mad light the deeper rim adds signifcant strength. I got to handle a pair made for Armstrong and have to say they are amazing.|
|These wheels aren't this way purely for aero...||russw19|
May 30, 2003 7:51 PM
|Regular profile rims aren't as strong... Triangular trusses... engineering and stuff like that. Deep dish aero profile rims are much stronger and stiffer, it allows the use of less spokes and lighter hubs to offset the extra weight of the rims.
|re: Giro observation: Lots of high profile aero wheels (not a spoiler)||rrjc5488|
May 30, 2003 1:26 PM
|I beleive those are either ADA wheels, or "lightweight" brand wheels. Both of them are very light (about 1000 grams I think) very aero, and very strong. why not have incredibly light wheels with aero rims that can take a beating all in one? lol by the way, the reason you only see pro's riding them is because they're also VERY expensive, because they're hand built.|
|Didn't realize they were so light, strong, etc.||js5280|
May 30, 2003 2:06 PM
|Thought they'd have to be much heavier than low profile/box rims but if the weight difference is nominal or just insanely light already, then why not use them unless you had a nasty crosswind or something. Guess everything is going carbon fiber nowdays.
Found the web site for ADA wheels: http://www.ada.prorider.org/carbonwheel.html
Wow, 955g for the set! A cool 2950 Euro, about $3500 US I think. I'll take two set then ;-)
|didn't bob roll say earlier in the giro||rufus|
May 30, 2003 2:14 PM
|that this is why there are so many flats now, the carbon deep section wheels are so stiff that there's no give or flex in them when they hit something.|
|yes, he did, i watched that stage too (nm)||bigdeal|
May 30, 2003 2:45 PM
|Yeah, Bobke...||Dwayne Barry|
May 30, 2003 2:49 PM
|was talking out of his *ss again. He's very entertaining but don't take too much of what he says as fact b/c he is often wrong.
It makes no sense that a stiff rim would cause a pinch flat and on top of that very few riders are using these wheels so how in the world could that account for more pinch flats AND are more pinch flats even occuring in the first place? Remember he's got to fill air time, best not to be encumbered by facts.
May 30, 2003 2:25 PM
|Mountain stages seem a good place to use light aero wheels because they should be great on descents and cross winds are unlikely in the mountains.
On the other hand, braking on carbon fiber rims is less than ideal, especially in the wet. That would make a steep descent pretty darn exciting.
|ADA / Lightweight ...||sacheson|
May 30, 2003 2:47 PM
|Cyclesport did a bit on them 3 or 4 years ago. Apparently, the developer of the wheels (Les Beers) toyed with a lot of configurations that allowed the use of a glued, carbon spoke instead of a metal spoke with a threaded nipple. The wheels you are seeing are the result of his studies. I think the depth of the rim is important for the structural integrity while using a non-metal spoke.
They were first used in the 1995 Tour when Riis won. Since then, they have been seen on bikes of professionals and wealthy recreational riders. You can see them LA's climbing bike in the Tour last year, Groenthal's cyclocross bike, Ullrich, Max Sciandri, and the bike from Tyler Hamiltons horrific wreck in last years Giro - claimed as one of only two failures. ADA cited nearly a two month wait at one time. Then the two partners of ADA split and the Lightweight brand was formed. I think the abundance of them is more a factor of a) the amount of time they have been in production and b) that two companies now make the exact same wheel, not that they are gaining popularity - they've always been popular ... just price and availability prohibitive.
The pair of those wheels weigh less than one rear Mavic Cosmic Carbone. Impressive.
Another note is they are supposedly so coveted, professionals that are lucky enough to get them keep the same pair for several years. That definitely says something for their quality.
|I think I read somewhere...||Dwayne Barry|
May 30, 2003 2:51 PM
|that Tyler's wheel that failed last year at the Giro was Riis' old wheel!|
|I thought that as well ...||sacheson|
May 30, 2003 4:14 PM
|... but I wasn't about to stick my neck out in this tough crowd! ;-)
Funny how Riis "insisted" on the Zipp special edition 303s this year, isn't it.
|I thought that as well ...||feathers mcgraw|
May 30, 2003 4:51 PM
|If I remember correctly, that wheel failed because Riis had 3 of 6 pawls removed to reduce freewheel drag. When one failed to engage the whole thing slipped and down went Tyler.|
|I thought that as well ...Yeah, that's right.||Swat Dawg|
May 30, 2003 5:27 PM
|I didn't know they were Riis' old wheels but I do know that the pawls were removed. Tyler was even warned by the ADA guy to not do that, but Tyler went ahead and look what happened.|
|I thought that as well ...Yeah, that's right.||feathers mcgraw|
May 30, 2003 6:05 PM
|From what I remember it was something Riis did long before he was Hamilton's DS. It's the kind of tinkering I expect Riis to do instead of Hamilton.|
|Old version had 3, new one has 6 because of failures nm||Bruno S|
May 30, 2003 6:56 PM