How to make a Dyno machine??

[cameron sydenham]

I have been talking to a couple of different dynocompanys, very expensive and one of the guys said, make your own.
use my motors drive shaft  and couple to a seperate motor, have it "floating" by using 2 pillow block mounts to its shaft. then "measure" the torque it creates with a "scale' or a load sensor. any input on how to make this would be helpful!!
Cam

[vince]

Cam;

Is this what you're looking for??

Vince

[cameron sydenham]

exactly, now ummm, what m i looking at. the pics have no directions. and kind of a how to?

[vince]

Cam

Go to, Lenz Thane a Hand topic, Reply #784, for a sketch

This was the rough Idea I had posted back in 2008.  Basically, all you have to do is mount your motor on 2 new bearings so that the housing can rotate on it's OWN axis which is the same as the armature axis, independent of it's armature rotation. This will probably mean fabricating a stub shaft on the end of the motor that does not have the armature shaft protruding,( See pictures and diagram). If you can, you should avoid mounting the second bearing on the armature shaft as this will add drag and skew your measurement. Each motor is different, but many have a mounting hub on either end which can be adapted to fit and turn in a bearing.  The only other thing you will need is a torque arm fixed to and protruding from the motor housing( say 12" long) which rests on a scale. Again, every motor is different and the solution will depend on it's design.

Vince