Alright Tom you’re not getting off that easy. “However the only thing Mazda is the Rotor Housings and the E Shaft” Where did you come up with different irons? New Zealand, Australia or Bill Jepson?  

 

 

Bobby

 

 

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Thomas Giddings
Sent: Thursday, April 26, 2012 9:35 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Fixed Pitch props.

 

It is a  20B/ Marcotte PSRU. However the only thing Mazda is the Rotor Housings and the E Shaft. . By the way in case the post was not noticed. I have an intake and throttle bodies. Similar to what Mark Steitle has done. I am going a  different route and have this and a Brand new "in the Box" Rotrex Super Charger C38-91 for sale. Looking for offers

 

KIND REGARDS

Thomas Giddings

n360tg@earthlink.net

727 858 1772

 

 

 

On Apr 26, 2012, at 9:57 AM, Ernest Christley wrote:

Bill Bradburry wrote:

Tom,

 

What engine/PSRU are you planning to put in your Venture?  It seems to

me that you are going to have to do some thinking about this combination

if you plan to use a Mazda engine.

 

 

 

------------------------------------------------------------------------

 

*From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]

*On Behalf Of *Thomas Giddings

 

 

Thanks for your info. I did contact Craig Catto and here is his response:

 

Hello Tom,

 

That is going to be quite a challenge to fit.   We make them for the 540

Berkut, and that is about a 285mph aircraft and have done one for a

E-racer turbo 540 at 350HP doing over 300mph.

 

I do not think I want to challenge the auto conversion, just the power

curve many times seems hard to fit. We know the curve of the Lyc engine

very well and so not such a big deal to fit in these types of

applications.  Easiest way for you to fit it is probably with a MT.

 

All the best,

 

Craig

 

 

 

I was surprised at his answer as i thought he did Tracy's prop. The

speed of the Venture will not be that much more then what he described.

It may be the high HP I will be using.Any more suggestions would be

appreciated.

 

Along the lines of using a 3D printer to shape that you glass, I built a CNC mill to cut a form from soft wood that I
glassed.  There was a learning curve that took a while to get over...about the same 3 months that it would take to get a
Cato prop.  I could build another one in a week now for around $100.  This one most likely has way to much pitch, but it
will give me a data point before I put a clock in the hub.

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