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Some odd machines

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killa
Won't Shut Up



Joined: 18 Oct 2004
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PostPosted: 15:11 - 12 Jun 2007    Post subject: Some odd machines Reply with quote
Surprised

https://www.voidstar.com/bff/future.html

Laughing
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Cleverly disguised as a responsible adult.
Bike:- Yamaha TRX850 | Killas Biking History | Killas Gaming History | Killas autmotive history
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treble
Nova Slayer



Joined: 25 Jun 2006
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PostPosted: 15:46 - 12 Jun 2007    Post subject: Reply with quote
Wha? I don't get it. It seems like some very bored person dreaming about stripping bikes down and making them worse.

?
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Jack_Cheese
World Chat Champion



Joined: 14 Jul 2005
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PostPosted: 16:38 - 12 Jun 2007    Post subject: Reply with quote
https://www.voidstar.com/bff/images/wilkins1.jpg

Cool Cool
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Quacker_boy: "Jack, you really are a dick!"
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pwntifex
World Chat Champion



Joined: 23 Aug 2006
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PostPosted: 16:46 - 12 Jun 2007    Post subject: Reply with quote
They all have beards. Shocked
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treble
Nova Slayer



Joined: 25 Jun 2006
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PostPosted: 20:32 - 12 Jun 2007    Post subject: Reply with quote
where did you get the pics? LOL.

https://www.voidstar.com/bff/ffwhat.html

Check that out. They are claiming that "feet forward" style bikes are safer, more aerodynamic, more maneuverable... It's all a load of crap but at the same time there might just be a market out there for this kind of thing...
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 21:29 - 12 Jun 2007    Post subject: Reply with quote
treble wrote:
They are claiming that "feet forward" style bikes are safer, more aerodynamic, more maneuverable... It's all a load of crap


Safer. Probably if designed that way from the start ( https://www.peraves.ch/index_english.html ). More aerodynamic? Well, difficult to get much worse than current bike (bikes aerodynamics are atrocious). More manueverable? Doubtful on that, and poor steering lock is a common problem for alternative front suspension designs.

All the best

Keith
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treble
Nova Slayer



Joined: 25 Jun 2006
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PostPosted: 21:42 - 12 Jun 2007    Post subject: Reply with quote
I am surprised by the aerodynamics thing. I always assumed bikes have good aerodynamics - it's accompanied by an image of a bike in a wind tunnel with all the vectors flowing off his crouched body.

You learn something new every day...
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 21:55 - 12 Jun 2007    Post subject: Reply with quote
Hi

Front might be nice and aerodynamic, but that has minimal effect. Most of the drag comes from behind, with the wake the vehicle causes. And looking at the back of a bike / rider you will see there is no useful attempt to sort that issue out.

The coefficient of drag of a 1990 Honda RS125 GP bike is 0.64, compared to 0.57 for a Hummer H2, and 0.3 for a 1982 Audi 100 (although the bike bike substantially better when area is included). Hayabusa is meant to be the most aerodynamic bike and they only manage 0.56.

All the best

Keith
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veeeffarr
Super Spammer



Joined: 22 Jul 2004
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PostPosted: 22:03 - 12 Jun 2007    Post subject: Reply with quote
Kickstart wrote:
Hayabusa is meant to be the most aerodynamic bike and they only manage 0.56.


Unless Johnny's on it Laughing
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Jack_Cheese
World Chat Champion



Joined: 14 Jul 2005
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PostPosted: 06:59 - 13 Jun 2007    Post subject: Reply with quote
Kickstart wrote:
Most of the drag comes from behind


All of it does, air resistance acts infront. I really should have learned to not be pedantic where Keith is concerned Laughing

The only effective way to make bikes aerodynamic would be to enclose the entire machine. However, this is impractical - being in a flimsy capsule during a high-speed off isn't exactly ideal.

Jack
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 20:52 - 13 Jun 2007    Post subject: Reply with quote
Jack_Cheese wrote:
All of it does, air resistance acts infront. I really should have learned to not be pedantic where Keith is concerned Laughing


I did toy with putting something like "hence the reason it is called drag", but decided not to.

Ho hum.

All the best

Keith
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Old Thread Alert!

The last post was made 18 years, 205 days ago. Instead of replying here, would creating a new thread be more useful?
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