I couldnt find a previous topic so lets give it a go.

What are peoples power to weight ratios for on the road condition, i.e. estimated power at flywheel (bhp) divided by laden weight (metric ton i.e 1000kg). By laden weight i mean car plus driver plus full tank of fuel.

i'm a bit pathetic....

72bhp in a 580kg car without driver, so that would be 72/0.66=109bhp/ton.

Who's got a slower se7en? ;-)

Is that with a 1.6 Pinto?

Assuming 105bhp for a standard (rebuilt) 20. Pinto and a similar weight to yours then 105/.66 = 159 bhp/ton

What have other people got?

my aim is to have a tweeked cosworth engine so 260 ish horsepower
and the bare minimal in the car so with driver 500kg estimates

which would be 520 hp per ton

my tank derivative should be approx 800 kilos with driver, 130hp.

buty thats still a reasonable 162 bhp tonne!

If I get 7 secs to 60 I will be pleased.


atb

steve

car=540, me=82, full tank=23
so 135/.645=209bhp/tonne

John

i'll have a go toooo

estimated car weight - 600k, my weight - 75k, fuel weight - 25k - so thats 700k

150/0.7 = 214bhp/tonne if i use the V6 engine from the XR4x4

if i use my newly aquired V8 which i hope to gain 200bhp from on a high comp SD1 EFI engine with a few played with items then i'll get this.

200/0.7 = 285bhp/tonne - which is very close to my 300bhp/tonne figure i desire - god i'm gonna kill myself hehehe


and all that torque aswell - georgeus

[Edited on 5-9-04 by Graceland]

We should have something resembling what you have graceland
All that on 195/60R14 tyres too
Conrod was saying he can spin his rear wheels in 3rd gear in the dry with his boggo 2l pinto.
I think I'd better get some nappies

Well, here's mine :

435-460Kgs approx (depending on fuel tank filling).
Me 70Kgs.
Power 160 BHP

giving me (with minimum fuel) 160/.505 = 316 BHP/ton

Kingr

Power to weight Laden - sounds like the name of a new kind of tarmac terrorist! Quite appropriate me thinks!

Its Friday - im bored, nearly time to go home!!

Do you think that 450kg is a pretty good guess for a bike engined standard locost with IRS but without all the road legal bits (lights etc.)??

Say 450kg + 70kg for driver = 520kg

130/0.52 = 250bhp per tonne, thats enough for me.

i think the 400 - 450 guide for a bike engine car is pretty much the norm, our racecar with full cage wet is 437 kilos based on a fireblade, if you went for billet calipers and alloy uprights and an r1 motor i would expect this to drop below 400 kilos, but probably cost you over a thousand pounds to achieve, besides a fireblade in a 450 kilo car is more than enough to get you into trouble

regards

marc

phelpsa.... you are a 70 kilo 13 year old?



atb

steve

I will be by the time it is finished. I am six foot and 62kg now!!

Adam

[Edited on 11/9/04 by phelpsa]

quote:

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Originally posted by phelpsa
I am six foot and 62kg now!!

Adam

[Edited on 11/9/04 by phelpsa]

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