Alex, if the throttle body works as advertised, it can be produced in small quantities in a competent machine shop. It will not cost all that much either. Mine were built with a manually controlled lathe and mill. I am happy with the stock side housings for the time being. We know they work and they are not hard to find. Jerry



On Monday, March 14, 2005, at 10:55 PM, Alex Madsen wrote:

Jerry, have you looked into getting your P-port insert rapid cast? If I remember correctly it has a complex internal geometry.

http://www.protcast.com/foundry.htm

 

Alex Madsen

PS While you are at it how about some AL side housings  ;)

 

 

<image.tiff>

From:Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf OfJerry Hey
Sent: Monday, March 14, 2005 6:42 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: peripheral ports

 


On Monday, March 14, 2005, at 01:26 PM, Richard Sohn wrote:

 

----- Original Message -----
From: Jerry Hey
To: Rotary motors in aircraft
Sent: Monday, March 14, 2005 5:33 AM
Subject: [FlyRotary] Re: peripheral ports


On Monday, March 14, 2005, at 08:02 AM, Paul wrote:



Paul, all the companies you list sell housings with BIG p - ports and massive overlap. They are designed to develop tremendous hp at high rpm for racing. Of course they don't idle smoothly. These engines have nothing to do with the smaller, conservatively timed p ports that we wish to use as aircraft engines. Jerry

Jerry,

what are you calling consevatively timed p-ports?
Just want to see were I stand with mine.

Richard Sohn
N-2071U

Richard here is the timing on my p port. I.O.= 78º BTDC I.C.= 75º ABDC

In the attached drawing the opening and closing events are measured from the housing center line. My p port is on the left. The Leman p port is on the right. Jerry