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 Post subject: Re: Aero vs light wheels
PostPosted: Wed Apr 02, 2014 2:12 am 
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Joined: Mon Dec 30, 2013 1:51 am
Posts: 37
alexaqui wrote:
Over on slow twitch, no one seems to care about weight, so there is a Flo love-fest. I am not convinced.


The thing about flo is that their deep wheels are a great aero option for the low price. Thats my opinion anyway. If you're considering enve I don't think you're in their target audience.


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 Post subject: Re: Aero vs light wheels
Posted: Wed Apr 02, 2014 2:12 am 


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PostPosted: Sun Apr 27, 2014 10:36 pm 
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Joined: Sun Apr 27, 2014 10:26 pm
Posts: 2
I would like peoples opinion on a competition i have soon.
Its a hill climb, 20% gradient 0.1miles, nothing long but short and sharp. I should be able to complete at around 15secs at 20mph on my cosmic slr's.
Does anyone think i would gain any advantage with c24's for this climb over my slr's?


Last edited by Andyvenge on Mon Apr 28, 2014 12:36 am, edited 1 time in total.

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PostPosted: Sun Apr 27, 2014 11:12 pm 
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Joined: Tue Sep 20, 2011 12:54 pm
Posts: 345
I find it odd to read about a "hill climb" where we're talking about a 2% gradient. What am I missing?


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PostPosted: Sun Apr 27, 2014 11:23 pm 
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Joined: Fri Dec 06, 2013 9:08 am
Posts: 92
2% gradient on 0.1 miles? Don't you mean 20+% gradient?


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PostPosted: Mon Apr 28, 2014 12:21 am 
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Joined: Sun Apr 27, 2014 10:26 pm
Posts: 2
Sorry my error. Its 20%gradient


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 Post subject: Re: Aero vs light wheels
PostPosted: Wed Apr 30, 2014 12:25 am 
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Joined: Sat May 12, 2007 3:40 am
Posts: 410
Location: Triange, NC
The C24 would likely be faster but, the amount is academic. The event timer won't have the measurement resolution tolerance to record a reliable result. Instead, focus on minimizing total weight (that includes yourself). That will be within the timer accuracy tolerance.


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 Post subject: Re: Aero vs light wheels
PostPosted: Fri May 02, 2014 7:58 pm 
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Joined: Thu Mar 08, 2012 11:43 pm
Posts: 462
HammerTime2 wrote:
Interesting. Now consider the following scenario, which perhaps led me astray.

Case A) Assume 4 riders all with the same power output and aero losses when riding by themselves. Have them ride 2 across and 2 deep, so the same scenario as tested by the magazine, but with each lead rider having someone behind.

Case B) Same as case A, except there are only 2 riders, with one in front of the other.

I thought that case A should be faster than case B. And a case with 3 across, each with a lead and follower should be even faster. Is that correct?


No, I don't believe so. The net drag of 2 riders side by side is slightly more than double the net drag of 1 rider, and I don't see why it would be different in a double row.

And the side by side thing is not just a theoretical effect, or one that only shows up under controlled circumstances in a wind tunnel, it is absolutely a verifiable real world effect. It's not news to me because it's something I've known about from a skydiving background. When planning large formation skydives it has to be taken into account that the more people join a set style of formation, the slower it's going to fall. For real.


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PostPosted: Fri May 02, 2014 8:00 pm 
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Joined: Thu Mar 08, 2012 11:43 pm
Posts: 462
Andyvenge wrote:
I would like peoples opinion on a competition i have soon.
Its a hill climb, 20% gradient 0.1miles, nothing long but short and sharp. I should be able to complete at around 15secs at 20mph on my cosmic slr's.
Does anyone think i would gain any advantage with c24's for this climb over my slr's?


Does that mean it's a flying start? If so I'd say you'd be better off with the most aero setup possible.


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 Post subject: Re: Aero vs light wheels
PostPosted: Fri May 02, 2014 9:14 pm 
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Joined: Fri Nov 18, 2011 5:19 am
Posts: 801
Where can I sign up for a sprint time trial like that? 15 seconds?! That's my kind of race!


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 Post subject: Re: Aero vs light wheels
PostPosted: Sun May 04, 2014 9:12 pm 
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in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 1268
Location: Glermsford, Suffolk U.K
Even I could do that hill climb and I hate hill climb events.

_________________
www.thecycleclinic.co.uk


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 Post subject: Re: Aero vs light wheels
PostPosted: Sun May 04, 2014 11:26 pm 
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in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 1268
Location: Glermsford, Suffolk U.K
http://www.aeroweenie.com/assets/backup ... ition.html

I think this article after 13 pages of posting sums it up nicely.

_________________
www.thecycleclinic.co.uk


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 Post subject: Re: Aero vs light wheels
PostPosted: Mon May 05, 2014 4:46 pm 
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Joined: Fri Nov 18, 2011 5:19 am
Posts: 801
I love that site.


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