51 replies to this topic

[vik]

Just wondering? They seem to be a air bit slower than other cars with similar power/weight? Assuming they're on similar tyres, why is this? Other than power lost through the transmission?

[Artful Dodger]

new engines are far superior to the ole 1930s pushrod engine.

[samsfern]

New engines also produce more torque, torque is what gives you acceleration.

[vik]

new engines are far superior to the ole 1930s pushrod engine.

pretty sure new bhps are exactly the same as old ones though ;)

Edited by vik, 12 May 2012 - 01:21 PM.

[vik]

New engines also produce more torque, torque is what gives you acceleration.

again, vs. cars with similar torque/weight ratios... still slower

[Artful Dodger]

errr not really, a 1000cc mini engine only really roduces 70 bhp, i see modern engines putting our 80 - 90 bhp easily

[Joseph-C]

he is saying cars with similar bhp per tonne not comparing bhp with cc.

[mini-luke]

errr not really, a 1000cc mini engine only really roduces 70 bhp, i see modern engines putting our 80 - 90 bhp easily

More like 35hp, if we're comparing stock vs stock. Don't forget 4 gears and the aerodynamics of a hose brick.

[samsfern]

Its just old technology, carburettors, pushrods, power sapping transmissions, distributors, etc.

[Joseph-C]

More like 35hp, if we're comparing stock vs stock. Don't forget 4 gears and the aerodynamics of a hose brick.

I'd agree with this gotta be the gearing.

[vik]

errr not really, a 1000cc mini engine only really roduces 70 bhp, i see modern engines putting our 80 - 90 bhp easily

he is saying cars with similar bhp per tonne not comparing bhp with cc.

This ^^^

Are you trying to say a mini with 70bhp produces less power than a modern car with 70bhp?

Also - please point me in the direction of some modern 1.0s with 90 bhp! Current Ford Ka 1.3 is ~75hp, and iirc the previous one was about 60hp

[vik]

errr not really, a 1000cc mini engine only really roduces 70 bhp, i see modern engines putting our 80 - 90 bhp easily

More like 35hp, if we're comparing stock vs stock. Don't forget 4 gears and the aerodynamics of a hose brick.

Aero barely applies in a 0-60.

I understand transmission losses, but even vs. a car with the same power/torque/weight at the wheels it's still slower!

[samsfern]

It is also like trying to propel a loaf of bread through the air, aerodynamics do come in on 0-60. Which is why my car feels slower when im towing my flatfronted trailor, which hardly weighs anything empty.

[samsfern]

As do wheel sizes (overall rolling radius) also have an affect.

Edited by samsfern, 12 May 2012 - 01:42 PM.

[maggies_minder]

errr not really, a 1000cc mini engine only really roduces 70 bhp, i see modern engines putting our 80 - 90 bhp easily

thats more than a standard 1275.