chassis dyno

[Chris "drooze" Wertman]

Originally Posted by astikhossw

Can anyone tell me if a chassis dyno multply the torque of the drive train and give you the results are does it some how give you the engine results.

There are many different types of "Chassis Dyno's" just like engine Dyno's

There are "Inertia" Dynos which guess at HP and Torque based on calculations of what the drum weighs or resistance and how much it takes to do that, some very accuratley

There are "Load Brake" Chassis Dyno's or Hub Dyno's that bolt to the axle like a wheel would, some are Hydraulic Load brake Dynos, just like and engine dyno, these can be "hyperaccurate" as in seeing gap changes, Dynapac is one, and if you look at their site they have a listing of places here in the states that have em, they also have other advantages. You can actually simulate a "Pass" or Full accel ramp, they are also easier on the Chassis and "Safer" do a search on youtube for "Dyno Accidents" some are funny as hell, some very very sad (in loss of iron) These are much more accurate on torque, but calculate HP based on Torque (a mathmateical equation)

There are other types as well, but those are the main 2

Dono if that helps, my limits of knowlege on Car Chassis Dyno's