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 Post subject: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 4:03 am 
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Joined: Sat Nov 20, 2010 6:06 am
Posts: 860
Location: Perth, Western Australia
Fairwheel have published their latest crank test . As usual it provides some interesting reading
http://fairwheelbikes.com/c/reviews-and ... k-testing/

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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 4:17 am 
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 Post subject: Re: Fairwheel Crank Test
Posted: Wed Nov 26, 2014 4:17 am 


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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 4:23 am 
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Wow Praxis. Impressive! (rhymes!)


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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 10:08 am 
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Digging the new site design.


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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 3:22 pm 
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Joined: Sat Aug 29, 2009 4:30 pm
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Nice comparison! Thanks!


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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 3:54 pm 
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Joined: Fri Apr 04, 2008 2:49 am
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Location: Europe
I agree, great comparison. One caveat: why was the BB30 version of the Sram RED 22 Exogram not tested? Since it has a bigger axle and a lower weight, its results should be even more favorable, especially STW-wise.

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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 4:00 pm 
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Joined: Wed Jun 08, 2011 6:08 am
Posts: 214
They posted in the comments that they are doing a bb30 test in the future.


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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 5:35 pm 
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Location: Tucson, Az.
mythical wrote:
I agree, great comparison. One caveat: why was the BB30 version of the Sram RED 22 Exogram not tested? Since it has a bigger axle and a lower weight, its results should be even more favorable, especially STW-wise.


For the first round of testing we targeted cranks with nearly universal fit, we wanted to test the cranks that would fit almost any bike, bsa, italian, bb30, pf30, bb86 etc... The Sram crank fits only bb30/pf30, the same as the SISL, which we felt wasn't quite a level playing field. We'll be doing a test of bb30/pf30 specific cranks soon.

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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 5:43 pm 
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Location: Vicenza
Compliments to madcow for the great stuff as usual! :thumbup:

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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 6:22 pm 
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Posts: 272
madcow wrote:
mythical wrote:
I agree, great comparison. One caveat: why was the BB30 version of the Sram RED 22 Exogram not tested? Since it has a bigger axle and a lower weight, its results should be even more favorable, especially STW-wise.


For the first round of testing we targeted cranks with nearly universal fit, we wanted to test the cranks that would fit almost any bike, bsa, italian, bb30, pf30, bb86 etc... The Sram crank fits only bb30/pf30, the same as the SISL, which we felt wasn't quite a level playing field. We'll be doing a test of bb30/pf30 specific cranks soon.

I look forward to the BB30 test. I have a BB30 frame, so it's not really fair to compare the SRAM GXP crank when I would use the BB30 version.


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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 7:03 pm 
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Joined: Tue Jun 08, 2010 4:58 am
Posts: 241
Location: Chicago
Even assuming same stiffness, the Exogram BB30 S/W value would shoot up to around 2.1. It is a very good value crankset.


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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 8:07 pm 
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Joined: Mon Apr 03, 2006 8:53 am
Posts: 456
Madcow, thanks for including the old school campy crank!!!!


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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 8:44 pm 
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Joined: Wed Apr 09, 2014 8:08 pm
Posts: 222
Location: Bremerton, WA
Nice review/comparison. Although as an engineer, I found the strain energy analysis a lot more interesting. Theoretically, almost all of the energy stored in the cranks will be returned to the drivetrain. The only time I think stiffness is actually a real benefit is for very hard efforts and sprinting, which happens a lot in road racing. However, I don't think stiffness is really a big deal for something like a time trial bike.

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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 9:04 pm 
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Joined: Fri Nov 14, 2008 4:55 am
Posts: 505
Fantastic work as usual madcow.

Hope to see the new S-works at some point thrown in there with those cannondales.

Either way I wish you guys were my local bike shop!

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 Post subject: Re: Fairwheel Crank Test
Posted: Wed Nov 26, 2014 9:04 pm 


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 Post subject: Re: Fairwheel Crank Test
PostPosted: Wed Nov 26, 2014 9:52 pm 
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Joined: Wed Sep 20, 2006 1:03 am
Posts: 316
Location: Madison, WI USA
Itsacarr, the S-Works crank should be very similar to the Lightning crank...IIRC, Specialized licenses the design from Lightning. That said, any differences would be really interesting, especially if they implied a different layup. The Hirth joints in both cranks should be similarly stiff, so I expect that wouldn't be a factor in any stiffness delta between the Lightning and S-Works cranks.

Cheers,

Jason


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