On Sat, 13 Jan 2007 03:38, Rob Morley wrote:
>
> wafflycat wrote:
>>
>> ...on a £69.99 full-susser from Argos
>>
>> Click on this link then scroll down a little to where is says
>> "Crazy Stuff" and has a pic of a mountain bike then click
>> the play button.
>>
>> http://www.dirtmag.co.uk/
>
> Is it really so unglaublich? Ski jumpers do it, and they don't
> have any suspension apart from their legs. I wonder how the
> take-off and landing speeds compare.
Skier is lighter, but has much less aerodynamic drag, so ought to go a
lot faster. Friction ski to ice is low to minimal, rolling resistance
of bike merely low, so I'd not expect significant effect there.
A ski-jumper (AIUI) gets a certain amount of aerodynamic lift during
"flight", which I very much doubt the bike does, so the trajectory off
the ramp is likely to be different, with the skier going farther for
the same take-off speed.
Landing area is specifically designed for someone leaving the take-off
ramp at high speed, so the angle _should_ be such as to minimise the
thump of returning to earth? The main problem I would expect would be
due to the aerodynamic difference of flight, so the biker returns to
earth at a less glancing angle.
Since the cyclist is wearing an oversize h****t, I wonder whether the
drag of same is tending to rotate him backwards, and what effect that
has on everything?
--
Tim Forcer
[email protected]
The University of Southampton, UK
The University is not responsible for my opinions
