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Speedbiker
human power supergeek

USA
1992 Posts
Posted - 06/07/2012 :  09:38:06  Show Profile  Reply with Quote
Yeah, nobody believes Sean's wattage. I think he's dyslexic and it's actually 320...
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Zyzio
recumbent enthusiast

USA
120 Posts
Posted - 06/07/2012 :  09:51:46  Show Profile  Reply with Quote
LOL...

PeterB
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mhelander
recumbent enthusiast

Finland
257 Posts
Posted - 06/07/2012 :  11:44:21  Show Profile  Reply with Quote
quote:
Originally posted by Speedbiker

Yeah, nobody believes Sean's wattage. I think he's dyslexic and it's actually 320...


Huh, that saved my day... did just 10 km TT leg to push little steam out, time was not sub 15 minutes but Strava estimated (using HR, speed and vertical data) 283 W and 164 bpm HR averages.

Cheers,
-Mika

MetaPhysic 700c @ 2011, M5 CrMo Lowracer @ 2010
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Larry Lem
human power supergeek

South Sandwich Islands
1971 Posts
Posted - 06/07/2012 :  12:59:14  Show Profile  Reply with Quote
Don't believe Strava on power. It thinks you're riding an upright bike.

Larry Lem
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mhelander
recumbent enthusiast

Finland
257 Posts
Posted - 06/07/2012 :  22:29:14  Show Profile  Reply with Quote
quote:
Originally posted by Larry Lem

Don't believe Strava on power. It thinks you're riding an upright bike.


I won't. But it gives kind of ballpark figure.

I'm trusting RChung's CdA & Crr calculations more. Not done those yet for my lowracer, still waiting Ultremo ZX 451 tires to got shipped...

Cheers,
-Mika

MetaPhysic 700c @ 2011, M5 CrMo Lowracer @ 2010
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sean costin
human power supergeek

Lesotho
1918 Posts
Posted - 06/18/2012 :  17:50:19  Show Profile  Reply with Quote
Video links to yarn tufts on the Nocom.
Air flow directly behind rider is perpendicular to the direction of travel. Note interesting upward flow behind my neck. Probably not what you expected.

Sean

http://s274.photobucket.com/albums/jj262/scostin/?action=view¤t=IMG_1445.mp4

http://s274.photobucket.com/albums/jj262/scostin/?action=view¤t=IMG_1451.mp4
Edited by - sean costin on 06/18/2012 17:55:42
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warren
human power expert

4225 Posts
Posted - 06/19/2012 :  05:56:59  Show Profile  Visit warren's Homepage  Reply with Quote
Nice videos Sean!
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Larry Lem
human power supergeek

South Sandwich Islands
1971 Posts
Posted - 06/19/2012 :  08:59:38  Show Profile  Reply with Quote
As some folks say the NoCom seat stays are way too small to help the bike go faster and therefore aren't a tailfairing, and that tailfairings have to be really huge, starting wider than the rider's shoulders to be effective, then are intermediate-size tailfairings such as the M5 tailbox not to be considered tailfairings with respect to the WRRA rules? How big does a fairing need to be to be considered a tailfairing? I am not looking for a specific answer. I am pointing out the possible need for more-specific rules regarding fairings to prevent confusion in the future. We should not rely on "We all know a tailfairing when we see one." as there is obviously a difference of opinion there already.
Randy suggested some rules. Maybe these should be discussed further.

Larry Lem
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alevand
human power supergeek

USA
1645 Posts
Posted - 06/19/2012 :  10:27:36  Show Profile  Visit alevand's Homepage  Reply with Quote
Flow looks separated, coming up from under the seat. Would be good to fill in this area.

C:
Tony Levand
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Speedbiker
human power supergeek

USA
1992 Posts
Posted - 06/19/2012 :  10:57:36  Show Profile  Reply with Quote
Obviously, higher pressure(relative) ait is trying to join the lower pressure(high velocity) air rushing over the top of the rider. Regardless, I like the Randy Rule. Nothing outside lines drawn from the body to a verticle line created by the rear axle. Unfortunatey, the M1 is outside this definition, but John can fix that! Yes, some clarification may be needed.
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randy
recumbent guru

685 Posts
Posted - 06/19/2012 :  12:44:30  Show Profile  Reply with Quote
I like "anything goes behind the rider". In front, "any INDIVIDUAL part (including shoes) may be faired".

Combine the tailfaired class with "unfaired" because riding flat on your back is a horrible way to ride a bike.
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Speedbiker
human power supergeek

USA
1992 Posts
Posted - 06/19/2012 :  14:14:15  Show Profile  Reply with Quote
How about actually leaving nonfaired, nonfaired(a novel concept). Add shoe fairing and whatnot to tailfaired. Making it partial faired.
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randy
recumbent guru

685 Posts
Posted - 06/19/2012 :  14:38:39  Show Profile  Reply with Quote
What the WRRA does is their business. I'm speaking, philosophically, as a fan of recumbent race bikes. Broadening the class (everywhere, not just the WRRA) opens up the design possibilities much more which I think is a good thing. Besides, who does it hurt? Not Aure, he's over 2mph faster than the best tailfaired rider. Look at the HPRA partially-faired results. Is there any point having a separate division for them because of the supposed aerodynamic advantage?

From now on the only way to have a viable chance at breaking the "unfaired" record is to adopt a flat-as-a-board supine position. Personally, I would like to see Aure's position and bike go head-to-head with the likes of Razz-Fazzes, Birk Comets and the like.
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randy
recumbent guru

685 Posts
Posted - 06/19/2012 :  14:41:44  Show Profile  Reply with Quote
Damn, I edited that last sentence and screwed it up in the process making me sound more retarded than usual.
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