Quiz: can anybody tell me why the pivot bolt needs to be in line with
 the center of the rubber bushing? :)

 Paul Lamar

So you reduce the angular component of the force vector. [It needs to be
perp to the sensor in two planes]

Jarrett Johnson

It's been 24 hours and nobody else has come up with an answer :)

The answer is the thrust from the engine would cause the sensor
beam to tend to rotate downwards and give a false torque reading on the
engine.

Paul Lamar


So, as the rubber crushes and sags over time, the output will shift?


Matt-

If one keeps it cool it won't sag :)
If it were not for this geometry rubber sag alone would not effect
the reading. For example if one could find a low cost load cell washer
with built in electronics in the right range one would not need
this mechanism.
http://www.loadstarsensors.com/?gclid=CMOOr5Kvy5oCFeZL5QodCVFY2w


I'll be happy with 5 HP resolution.

What we have now are airplanes with anywhere between 150 HP and 250 HP.
There are a lot of crude intake manifolds out there :)

Paul Lamar