Paul,

A while ago there was a discussion about an invention of yours that can
be used to measure torque on the propshaft, thus hp. at any given time.
Will you please explain to me with the aid of the attached Ross psru
drawing, where and how this device needs to be installed. (I do not have
one of Tracy's redrives)

Also, should I want such a device, where to get one.

Last point: how do I get it to read out hp. in the cockpit? Laptop? Or
calculation from torque given?

Does Amazon stock your new book?

Regards,

--
Erik Snyman
Messina
South Africa.

The Ross gear box uses a helical sun gear. Any helical gear will
tend to unscrew itself from other helical gears it is in contact
with when torque is applied. This force is called a thrust force.
The higher the torque applied to the gear the higher the thrust force.
A point that Lou Ross missed when he first designed the Ross gear box
35 years ago.

This force must be countered by a thrust bearing. Later Ross boxes
had this thrust bearing added. 2nd & 3rd jpg.

I have added a annular hydraulic cylinder between the thrust bearing and the
bell housing wall. Knowing the pressure in the cylinder will tell
you the trust force on the helical gear. Knowing this thrust force
you will know the engine torque on the helical gear.

I think you will have to make your own annular hydraulic cylinder using
O-rings for seals.

Paul Lamar ...No rotor no motor.

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