Rolling Road questions

[MillerLight]

I am planning on rolling roading my car in a few months or so. I have a few questions on what actually happens.

1st question.--- When the car is on the rollers does the operator depress the accelerator fully (floor it) or is it a gradual smooth acceleration? (from the vids I’ve seen its smooth)

I only ask as my car has a “over boost” where the torque is increased for a 5 seconds burst when the accelerator is fully depressed, and so I want to know if I will get a full torque figure or will I have to apply an % increases to the result to get an idea what it will be making if the “overbost” would have cut in.

2ed question. --- I have seen “Rolling Roads” where the cars tyres make contact with rollers. I have also seen ones where the wheels come off and the reading is taken from the cars wheel hubs.

Is one better than the other?


3ed question. --- is the “hub” type actually called a rolling road or is it something else?
4th question. ---is a “Dyno” just a brand name for rolling road?

Thanks in advance

Steve MillerLight

 

[mattjk]

they stick it in 3rd or 4th and floor it. It just seems gradual because its picking up from tickover basically if that makes sense

 

[MillerLight]

right ok. that makes sense. thanks

 

[bmh.01]

The hub type are more accurate I believe as the varying wheel sizes don't effect the reading.

No dyno isn't a brand name is just a shortend version of dynamometer which is what a rolling road is.

Read on if interested: http://en.wikipedia.org/wiki/Dynamometer

 

[Daz Clio Cup]

hub type is to stop wheelspin but i've never seen one. The best type are engine out, but obviously expensive