Dyno Sheets

[Squalled_]

Hey P.A.,

I have been looking at Dyno sheets every now and then and I was wondering about the torque readings.



For instance this Dyno sheet says that the LM17ER EM1 made 159 nm but on the actual graphs it has a different reading, 'Torque Rear'.

Can anyone explain this at all?

Cheers

[torell]

well, i cant. i tried! but... i cant.

[PJF_Lude]

the dtorque figure is the one thats most likely to be close to accurate. It's derived torque and takes into account gear ratios, etc.

[lorby]

Ian's right with that one, it will put down a figure on the dyno but it's not always correct depending on Gear selection and Diff ratio. It needs to be a 1:1 ratio from the engine to the wheels to get the actual figure you want, which isn't always possible to do without a bit of calculation at the end!

For example on my turbo cars' dyno it put down like 400nm of torque running 7lb of boost. I know for damn sure that the engine isn't actually putting that out .