On Mon, 16 May 2011 16:50:51 +0100, LucretiaBorgia
<(E-Mail Removed)> wrote:
>On 15/05/2011 20:46, Pip Luscher wrote:
>> It gets smaller. Still, I saw the Vintage Speedway: I'd forgotten the
>> wonderful smell of alcohol-fuelled bikes. First and second time I've
>> seen anyone fall off doing it as well.
>>
>> One neat stand was a bike mounted on a ramp with its back axle fixed
>> so that the bike could rotate in the vertical plane but not move
>> forward - the rear wheel rested on a sort of dyno drum. The idea was
>> that one could 'wheelie' the bike while stationary. There was a
>> safety cable that prevented it from backflipping.
>
>Like this?
>http://www.youtube.com/watch?v=lKwlFrZz-eA
Sort of, but not the same. In that clip, it's hard to tell, but it
doesn't look as though the rear wheel is turning at all: it appears to
just be using the clutch, or maybe there's a heavy-duty clutch powered
directly off the chain.
The one I saw did actually use the rear wheel to drive a drum, which I
guess either had a brake or a lot of inertia. Or both. Also, the
bike's rest position was tilted about 20deg up: I guess to compensate
for the lack of horizontal acceleration.
>(Check out some of the idiotic comments....)
I see what you mean.
--
-Pip