"Albert T Cone" <mmmm@[EMAIL PROTECTED]
> wrote in message
news:5fjqo4F3bel88U1@[EMAIL PROTECTED]
> Doc wrote:
>>> Well we dont know. The veyron according to conventional wisdom and
>>> an aerodynamics calc wouldnt actually be able to catch the vauxhall
>>> anyway...
>>
>> An aerodynamics calc says a car purpose-built to go the better part
>> of 300 mph has an aero *disadvantage* compared to a mass-produced
>> passenger car from the '70's? He's got some mods on the Vaux body,
>> but still.
>
> Yeah, but the cdA only needs to be under 30% more than that of the
> Veyron - it's not easy to get a 30% reduction. According to Gordon
> Murray in
> http://www.roadandtrack.com/article.asp?section_id=7&article_id=3075
,
> the cdA of the Veyron isn't _that_ low anyway. As Burgerman says, it is
> probably close a close-run thing.
>
>>>> While the Vauxhall can go around 190, how long can it maintain
>>>> it?
>>> Err who knows what it can "maintain" - it has the power to go
>>> faster than the veyron anyway. Just.
>>
>> It has the power and gearing to go a 1/4 mi about 2.5 secs faster -
>> on a dragstrip on drag tires - ending up at just about its top speed
>> if it's set up correctly as a drag car.
> That 2.7 seconds is a *HUGE* difference. The average acceleration is
> almost twice as high in the Vaux over the quarter mile. Almost certainly
> it will be good for over 200mph, because the power will drop off after
the
> peak, and it will definitely get there a hell of a lot sooner and be a
> hell of a lot further down the road when it does.
>
> As Burgerman says, in a give and take race on the motorway, where speeds
> probably aren't going to venture above 200mph that much, the vaux is
> pretty certain to win. If you throw in nasty surfaces, bends or long
> smooth straights, then it becomes less clear and probably favours the
> Veyron. Possibly :-)
>
> > Also, unless we see a verified dyno test of that Vauxhall's engine,
>> we've got only his word for it that it makes 2000hp. People are known
>> to embellish such claims. And where is that engine making its power?
>> Aren't the powerband characteristics of the engine im****tant?
> Of course, but then it does post a 1/4 mile time which roughly
corresponds
> with what you might expect for the claimed power figure. The video
showed
> it to be surprisingly tractable when tootling.
>
>> You say there's not enough distance to get to full speed - if it gets
>> over 220 in 1.5 miles, doesn't seem he needs much distance to go
plenty
>> fast. Aren't there straightaways longer than that in Europe?
> There are plenty of straight sections of that sort of length, but the
Vaux
> gets to 200+mph in less than 0.5 mile, so it will have made rather a
> significant lead by the time the Veyron matches it's top speed, one
would
> imagine.
> OK, stuff it, lets do the geek thing properly :) I've done a noddy
excel
> drag-race, using the available data for both cars. Assuming that the
Vaux
> has a max speed of 200mph then we get:
> http://www.dur.ac.uk/a.k.kirby/images/drag/vaux_200.jpg
> The veyron overtakes after 36s, 3km down the road
>
> If the Vaux can hit 210mph, then it looks like:
> http://www.dur.ac.uk/a.k.kirby/images/drag/vaux_210.jpg
> This time the Veyron takes 42s and 3.5km to overtake.
>
> I haven't produced the graphs, but if V-max for the vaux were 240mph,
then
> it takes just over 100s and 10.5km!
>
> I should point out that this is entirely based on noddy physics and
> googled data, so should be taken with a pinch or 10 of salt :-D
>
>> Btw, how does your bike compare to a Yamaha R1? There's video on
YouTube
>> of an R1 getting repeatedly, seriously smoked by a Veyron.
>
> Heh, our Burgerman was/is the full-fat nutcase type of drag biker - I'm
> not sure about the specifics, but it was some sort of fast s****ts bike
> with a huge turbo and nitrous, getting about 300HP at the wheel, IIRC.
> Quite a lot quicker than an R1, anyway, I'd imagine.
No I was on a stock water cooled 136bhp rear wheel quiet Suzuki gsxr. Well
it had nitrous fitted but was not being used. 10.3 quarter mile, 0 to 60
in
about 3secs.
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