adeel.a

Pardon my ignorance... I know very little about a 'rolling roads'...

As far as I know a 'rolling road' discovers the top speed and BHP of a vehicle...

But how; like what do you do... Do you drive at full throttle through all your gears on the rollers or what...

Thanks in advance

John WRX

Basically, it will only measure your bhp, this is done by driving the car through the gears then in 4th with is direct drive, it is taken all the way until the power dips at the end of the curve usually around 6-7 thousand revs. Its all worked out by the computer. Thats as much as i know, hope it helps.

CHRIS_D

they take it through the gears easily until they're in 4th

then they do about 3 runs, each time taking it to the limiter

usually on the third run they take the reading

ive been to two now, they're not that bad

chris

John WRX

took the words out of my mouth Chris. Everyone ive been too aswell its not yourself driving the car, its always been the techician, for insurance reasons i think???

alanjack

It's got nowt to do with insurance, if your car blows up its tough titty my son

adeel.a

So while going through the gears, does one throttle until 'red line' or... is it more of a leisurely drive

Sorry... I have not a clue...

[Edited by adeel.a - 5/10/2003 9:25:30 PM]

Leviathan

Another way of putting it, its a dynomometer wich puts a "load" on the engine until the engine just starts to lose revs and cant give anymore,ie, full f*****g bore! its at this point it will measure its maximum power and torque. I used to do a similair job with British Rail Engineering 15 years back, dyno testing 3250 horsepower V16 Paxman Diesels In locomotives, definately not for the faint hearted but a fantastic noise! Il always remember the exhaust stacks glowing a nice cherry red, yes, the engine is working very hard!!

[Edited by Leviathan - 5/11/2003 1:28:08 AM]