Discuss light weight issues concerning road bikes & parts.
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ichobi
- Posts: 619
- Joined: Thu Jan 19, 2012 11:30 pm
by ichobi on Tue Jul 03, 2012 12:40 pm
Beat my friends' creation
This

+ this

= this


I reckon this shaves off some 40 watts
Image courtesy to Thaimtb.com board. They are Thai cyclists. (Where am from).
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Estelja
- Posts: 227
- Joined: Tue Jun 23, 2009 10:47 pm
by Estelja on Tue Jul 03, 2012 9:54 pm
Any particular reason that guy doesn't have a left brake lever? Is that for aero also? I imagine that helmet tape job also functions as a weight loss device when worn in the typical 100% humidity conditions of Thailand. Kind of like a wrestler's rubber sweat suit.
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Rush
- Posts: 348
- Joined: Thu Mar 01, 2012 2:10 am
by Rush on Wed Jul 04, 2012 2:07 am
Estelja wrote:Any particular reason that guy doesn't have a left brake lever? Is that for aero also?
Because there is no front brake (for aero as well..supposedly).
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ichobi
- Posts: 619
- Joined: Thu Jan 19, 2012 11:30 pm
by ichobi on Wed Jul 04, 2012 2:35 am
Aero and less weight = WIN.
Those pics are from some of the fun competition we held, (crazy bike mods parody, and fattest guys to win a lap race get goodies).
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prendrefeu
- Posts: 8608
- Joined: Wed Oct 31, 2007 10:32 pm
- Location: Los Feliz, Los Angeles, California
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Contact:
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Dalai
- Posts: 1491
- Joined: Wed Dec 15, 2004 10:54 am
- Location: Melbourne, Australia
by Dalai on Thu Jul 05, 2012 8:55 am

I've seen a photo of a rider I believe in the UK trying similar head and leg fairings in a TT like below, but couldn't find the picture...

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BobSantini
- Posts: 292
- Joined: Sun Jul 10, 2011 9:03 am
by BobSantini on Thu Jul 05, 2012 10:46 am
1)
Drill lots of holes in the front and back of your forks and downtube and just let the wind blow straight through. It works for supersonic jets.
http://www.nasa.gov/centers/dryden/hist ... ex_prt.htm" onclick="window.open(this.href);return false;
2)
Humpback fin tubercles : improve laminar flow while improving both L/D and stall angle at a disproportionally small cost in drag, so maybe its time to glue some bumps on the leading edges of your forks and down tube. There's only a very small increase in drag and the sideways lift will just keep on pushing long after everyone else's has stopped. Parachutes are also effective.
http://icb.oxfordjournals.org/content/48/6/788.full" onclick="window.open(this.href);return false;
r o y g b i v
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Mikmik
- Posts: 313
- Joined: Tue Sep 28, 2010 10:30 pm
by Mikmik on Thu Jul 05, 2012 1:06 pm
simonanks69 wrote:what about lying in a steel mold to mold your body in an aerofoil shape???

Post of the year for an aero response

It's not how much you spend on a bike it's how hard you can ride it.
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llhh
- Posts: 78
- Joined: Tue Jan 10, 2012 8:10 pm
- Location: Estland
by llhh on Thu Jul 05, 2012 6:22 pm
Mikmik wrote:Dalai wrote:
That is embarrassing!!
Absolutely not! It's a common practice amongst top triathletes to wear a fake shark's fin during the swimming shift to psychologically weaken the opponent. The poor bugger just forgot it on. Laughing at it shows just how little we cyclists know about this fine sport.
Parlee Z1 Super Record / ENVE / Campangolo Bora
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gg333
- Posts: 56
- Joined: Sun Feb 19, 2012 3:40 pm
by gg333 on Thu Jul 05, 2012 6:47 pm
This thread is great
However I do actually have a serious question aimed at any members of the forum who use prosthetic limbs. If you have a prosthetic limb and race in a UCI sanctioned race, does it have to comply to the 3:1 ratio and are there any other regulations on them e.g weight?
purely out of interest
thanks
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Mikmik
- Posts: 313
- Joined: Tue Sep 28, 2010 10:30 pm
by Mikmik on Fri Jul 06, 2012 6:02 am
llhh wrote:Mikmik wrote:Dalai wrote:
That is embarrassing!!
Absolutely not! It's a common practice amongst top triathletes to wear a fake shark's fin during the swimming shift to psychologically weaken the opponent. The poor bugger just forgot it on. Laughing at it shows just how little we cyclists know about this fine sport.
Each to their own but there is so much more to fix before a tail fin and rear water bottle fin is thought about. I have never seen anything like that in any of my aero product research anywhere and have never even heard this mentioned. It looks ridiculous.
It's not how much you spend on a bike it's how hard you can ride it.
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User Name
- Posts: 596
- Joined: Tue Jun 07, 2005 3:32 pm
by User Name on Fri Jul 06, 2012 7:13 pm
When Tony Rominger achieved one of his hour records, a magazine said there was "word" that he used a low-friction, 'aero' spray on his skin and suit.
No joke. I've got the magazine here somewhere

Last edited by
User Name on Sat Jul 07, 2012 3:34 am, edited 1 time in total.
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