scoooby slayer

iTrader: (4)

what is the ramp rate on a rolling road ? and what does the ramp number used mean ?

cossie4i+

iTrader: (15)

Its something to do with the way the speed builds on the rollers.

A longer rate should put more load on the car.

Steve

tabetha

Some rollers are capable of holding the speed steady regardless of amount of power or throttle position, they do this then, then with another control let the rollers go so the speed power builds, this is what I understand it to be, that's what is done on mine anyway.
So in essence the rate at which it is allowed to accelerate.
tabetha

Chip

iTrader: (3)

As above, its the amount of resistance to change in rpm that the rollers exert basically.

Essentially think of it is like change the angle of a hill and how that would effect the speed at which you pull through a gear.

scoooby slayer

iTrader: (4)

cool thanks for replies so a higher ramp rate will put more load on the engine by more resistance on the rollers.

tabetha

Yes,
I suppose swapping the word ramp for hill explains it better.
tabetha

Big Will_

If you have a listen to the video below:
http://www.youtube.com/watch?v=pjSg5ogUvP8

You can hear how the loading on the engine is changed with the rollers