Somewhere I found a set of plans and how to for making a torque measuring device using a VW wheel as the back of the motor mount and a 6', 2"x4" placed on a scale so that as the engine turned up the RPM's you could read the torque in foot pounds at any RPM and the guy used a 2"x4" for a prop so I don't think the prop has a lot to do with the torque. I have the drawings somewhere and if I can find them I'll give them to Mark L. to post on his site. I haven't tried to find them on the internet because I've had these plans since the early 80's
Patrick Driscoll Saint Paul, MN patric...@usfamily.net www.pensbypat.com If you can read this, Thank a teacher If you are reading this in English, thank a veteran