I redesigned the Ford based PSRU and got the weight down 'to less
 than 30 pounds. The original Ross was 35 pounds and Tracy's was about
 45 pounds. I am going to start machining on the parts in the next few
 days.

 It is the same length as Tracy's so it is interchangeable. About 11
 inches. It could be about 4 inches shorter for the air cooled one
 rotor. That would save a couple of pounds.

 No conventional prop flange is used. It is designed for the
 WarpDrive/Sensinech ground adjustable pitch prop blades. More or less
 a defacto standard now in the US and in Oz. It is a 3 blade version.

 I'll test it on the RV4.

 Paul Lamar

Is this in conjunction with Neil's work?
I'm almost at the point in my build where I need a PSRU to start finalizing my cowl design.
Either I find an old Tracy PSRU or see what you and Neil have cooking. 3.xx gears would be great.

I never heard of those prop blades, I'll have to do some research into them.

 Matt Boiteau

Matt, are you still if Florida?  Is your engine running?

I get down that way  time to time.

It is for the US market.

Here are some pictures of the ground adjustable more or less WW standard.

Paul Lamar



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