Torque measurement

[Tom Parker]

Eric Schumacher <e.schumacher at worldnet.att.net> wrote:

>Long ago there were some guys that bolted a linear position sensor to the
>fire wall (for transverse engines) and the input shaft to the top of the
>block. Amount of position shift of engine against mounts indicated amount
>of torque. Was caliblated with torque rwrench on crank end with car in high
>gear and front bumper against a tree. In-accuracies are due to the changes
>of properties of rebber when it changes temp.

Sounds good.

What about putting a postion sensor on both the inner and outer CV joint (for
front wheel drive engine) and measuring the twist in the driveshaft?

My Mini has a 450mm by 25mm driveshaft.

Anyone know rough calculations for torque v twist?

The motor puts about 340 Nm on the ground (100Nm at the crank) in top gear.

--
Tom Parker - tparker at geocities.com
           - http://www.geocities.com/MotorCity/Track/8381/