I've been trying to determine nM/lb-ft from a Dyno chart containing only kW (ATW and Flywheel) and RPM.

I've stumbled onto a few formulae (a little knowledge...) such as
x bhp = RPM * torque (ft-lb) / 5252
x 1 ft-lbs = 1.35582Nm
x 1 kw = 1.543963712 kw (based on ATW vs Flywheel calculations)

And extrapolated this into the attached Excel Worksheet. Anyone care to comment on its integrity? Thanks.

Even though I have a decent Virus checker, for the nervous ones turn Macros off to be sure :)

http://groups.msn.com/myphotosajb/Documents/02%20STI.xls

Why not just download Convert from http://www.joshmadison.com/software/ ? :D :)

Richard

I have - and its fabulous. However it wont do the RPM+BHP -> Nm/lb-ft calculations :)

Ah, OK - so you mean I should actually read your post first next time?! :D

Sorry
Richard

Up to you :)
I think the figures in the spreadsheet are optomistic anyhow.. I'm going to put together what I think is a more reasonable estimate today.