Tracy Crook has announced that he is no longer producing parts. Are there
 any plans for someone to continue producing these parts? Seems like the
 best options for PSRU's and EFI's. Is it possible to get working drawings
 for these parts?
 Paul Shamlian

 We are thinking of making a 3.17:1 Ross copy after the TC is done.
 It is ten pounds lighter than Tracy's and hundreds are out there since
 1973. Tracy used the same Ford gears as the Ross.  There is
 probably 100,000 accumulated hours on both Ross and Tracy.
 Lots of detail improvements have been made.

 We will use Jeff's NC machined PSRU adapter with the built in motor
mounts
 and our new rubber coupler Mark S is getting ready to test.

 Many sources for computers.

 Mega Squirt is popular and well supported.
 Much easier to tune than Tracy's.

 Also http://www.sdsefi.com/

 Motronic is one of the best.

 Paul Lamar

I will purchase a PRSU when you have one ready.

Ben Lane


One of the heaviest and most expensive parts is the prop flange.
Due to the cost of the thick raw alloy steel blank and the time
to machine it. It takes a very big and powerful lathe
to machine it quickly with a lot of waste material.

The gyro bending load on it is severe.

Therefor I am going to test this idea.
It is a weldment made from 1/8th 4130 sheet metal and tubing.
Heat treated and finally machined.

This is a two blade version.

Paul Lamar

Is there going to be a weight savings with your hub?

Will Aldridge


Not much if any over the Ross design. A lot over Tracy's design.

Paul Lamar

The Ross products are pretty decent.  I used to work in his shop I Tucson
years ago.


Barron
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