Even my Brava wouldn't survive this.....

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Even my Brava wouldn't survive this.....

As for concentrating on efficiency - they are already. Most cars, even the ones that can do 130mph are most efficient around 60-70mph.

That's not the point, if gearing and torque/power curves were modified for 0-100 speeds rather than 0-130 speeds (or similar) - the economy increase would be significant.
 
That's not the point, if gearing and torque/power curves were modified for 0-100 speeds rather than 0-130 speeds (or similar) - the economy increase would be significant.

This ain't a stab at you mate.(y)

[rant]
OKAY!:bang: not always true, the final drive on cars that can do 100+ is alot higher than a car the could only do 100. for example final drive in a car the tops out at 100 to cruise at 70 you could be sitting at about 4.5k+ rpm where cars that do 130 would be sitting at say. 3k rpm. thus makeing the car gearing for 100mph your LESS efficiant by consumeing more fuel for the same speed.

The best thing we could do is make stronger more efficiant engines so you dont need to rag the balls off of them to get moveing. not smaller weaker engines yes they may use less fuel sitting arround idleing. for example my grandad has some mitsu car thats got i think a 1.1 in it, you need to rev the balls off it to really get it moveing hence useing more fuel. where my 1.6 brava, its not only bigger, faster, but it also gets better MPG than the 1.1 so bigger engines CAN be better for the enviroment. all depends on how well they are made and mentained. a poorley mentained engine that is state of the art will dump a ton of sh!t out the exaust. you want to make cars greener? pay for the up keep mister government! :p

now back to speed. a car capable of doing say 180 will most of the time have a LOWER rpm at speed. but this depends on the desigen. by have a LONG final drive, you can get better fuel consumption AND a higher final speed. (y)

who ever the idiot is who proposed this lets see what he drives. probably some BIG fuel guzzling bimmer :mad: [/rant]


okay im done now :D
 
But that's not what matters. Of course a car geared to do 130 mph will do fewer RPM than one designed to do just 100 mph at a given speed, for example 70 mph.

However, that's a massive over-simplication of what matters for economy. Hence if a car was developed to do 0-100 mph only efficiently it would be more efficient than a car capable of doing 0-130 mph.
 
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