Vittoria Diamante Radiale Pro (220 tpi)

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PoorCyclist

Post subject: Re: Vittoria Diamante Radiale Pro (220 tpi)

Posted: Mon Apr 02, 2012 9:28 pm

Joined: Wed Dec 07, 2011 1:26 am
Posts: 362
Location: California's country side

tanhalt wrote:

I got one hoping it would have a decent Crr due to the radial (almost) casing layout...but, alas, when I roller tested it, the results weren't good

Probably the rubber hairs aero drag slowing it down :lol:

If you do get to ride it outside I would like to hear what you think too. I just think they are definitely better than the rubino pro's.. and I didn't pay too much more for them.

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rruff

Post subject: Re: Vittoria Diamante Radiale Pro (220 tpi)

Posted: Mon Apr 02, 2012 10:26 pm

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Joined: Sun Jan 08, 2006 9:12 am
Posts: 2194
Location: Alto, NM

tanhalt wrote:

I got one hoping it would have a decent Crr due to the radial (almost) casing layout...but, alas, when I roller tested it, the results weren't good

That's sad... just how bad is it compared to others you've tested?

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Phill P

Post subject: Re: Vittoria Diamante Radiale Pro (220 tpi)

Posted: Mon Apr 02, 2012 10:37 pm

Joined: Sat Jun 02, 2007 1:10 am
Posts: 1782
Location: Melbourne, Australia

What pressure did you run them at for the test? Vittorias need a bit more air pressure so you might have been over flexing the side walls reducing the Crr.

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tanhalt

Post subject: Re: Vittoria Diamante Radiale Pro (220 tpi)

Posted: Tue Apr 03, 2012 12:44 am

Joined: Wed Dec 27, 2006 6:36 pm
Posts: 107

rruff wrote:

tanhalt wrote:

I got one hoping it would have a decent Crr due to the radial (almost) casing layout...but, alas, when I roller tested it, the results weren't good

That's sad... just how bad is it compared to others you've tested?

I don't recall the exact number (I can look it up later), but it was bad enough for me to relegate it to "commuter bike" usage

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tanhalt

Post subject: Re: Vittoria Diamante Radiale Pro (220 tpi)

Posted: Tue Apr 03, 2012 12:45 am

Joined: Wed Dec 27, 2006 6:36 pm
Posts: 107

Phill P wrote:

What pressure did you run them at for the test? Vittorias need a bit more air pressure so you might have been over flexing the side walls reducing the Crr.

I test at 120psi on the rollers (Kreitler 4.5" diameter).

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andrewleitch86

Post subject: Re: Vittoria Diamante Radiale Pro (220 tpi)

Posted: Sun Nov 25, 2012 11:17 pm

Joined: Sat Jan 23, 2010 11:38 pm
Posts: 15
Location: Glasgow, UK

Anybody used these on 23mm wide rims yet?

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Wizzo

Post subject: Re: Vittoria Diamante Radiale Pro (220 tpi)

Posted: Mon Nov 26, 2012 8:56 am

Joined: Mon Aug 16, 2010 9:47 pm
Posts: 114
Location: San Francisco, CA

Both on A23 and Hed Belgium wheelsets. Did not get the 22mm but the 24mm on 23mm rims measure out to be 27.87mm avg. with the calipers. I have also found out that riding with 70psi front and 75psi rear has been the best balance for my riding. I weigh 139lbs / 63~ish KG.

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