Hi Paul,
I have been researching PSRU's for piston and rotary engines during

which I

found your site, I have looked at and read everything on your very
interesting site, which is the most comprehensive on the net.
You have obviously spent a lot of time working on rotary engines and
designing components to make
them into aircraft engines.

I see that you have designed and built a number of PSRU's and recently a
design for a light weight PSRU using a large diameter hollow prop shaft,
which I assume is a development incorporating of all the experience

gained

from previous designs, test and air time.

As I wish to make a PSRU for my own engine I thought you might have some
working drawing of the designs that has been most reliable or the latest
design that you might be prepared to supply me.

I note that you use the gears from a Ford auto transmission, could you
supply these parts and give me some idea of the cost as I am not sure if
they are available in the UK,with part numbers and details of the
transmission I could try to find them.

I know PSRU's are a critical part of all engine conversions and they

have to

be well designed and constructed also that most people who have designed
units in the past are reluctant to let others
use the design for fear of the legal consequences.

I am an engineering designer and consultant in the plastics industry, I

have

a well equipped workshop and also am well placed to source the

components I

cannote make in my own workshop.
I look forward to receiving you comments
Geoff Pearce

Cheshire  England

The hollow shaft version has not been built yet but you are welcome to
use the design. I can work with you by email and help solve any problems
that might arise. If you just want to fly I highly recommend Tracy
Crooks redrive. Real World Solutions. We have a guy in Brisbane Aus

working

on a bell housing casting you might be interested in. Also he is working
on his own PSRU design.

I added you to our news letter email list.

Yes we have a source for the Ford TX parts. Slauson transmission parts
in Compton California USA. They run about $225 US for the complete
six pinion planetary gear set. Shipping and handling extra.

What CAD program are you using? I use Rhino but I can export a wide
range of file formats.

Paul Lamar

Geoff,
I'm the chap in Brisbane Australia!
Paul is right the Slauson people are the right ones to get parts from -
E-mail them and ask for Luke the sales manager (lepstein@slauson.com).tell
him your working on a similar design as myself.

You want parts for the E4OD Ford (six planets), there are 3 Planetary
components you want either the Front (2.85) or the rear (2.17). I guess it
will depend on what your flying and what HP you want. Paul might want to
advise you on this.

If you get the front make sure you get the thrust bearing between the sun
gear and the planetary housing - he left mine out.

Geoff it's good to get someone from that part of the globe to be working on
a similar project, you seem well placed to do well - could you keep us all
informed of your progress and design outcomes. Were all on a learning curve
here!
George (down under)
lendich@hypermax.net.au - for any further information.

 
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