> > Jerry Hey wrote:

 > >
 > > I think that my wife, Joy,  has determined the peripheral

port

size

 > > and timing  of the Leman Engine.  Here is what we did.

First I

 > > measured the inside vertical height of a l3B rotor housing.

This I

 > > determined to be 9.44 inches which we divided in two

(4.72")since we

 > > were only interested in the top half where  the intake port

is.

Now I

 > > step out of the picture and Joy takes over.   The second

step

was to

 > > import the drawing of the Leman engine into PhotoShop where

it

was

 > > cropped to eliminate all but the top half of the rotor

housing.

This

 > > was saved as an EPS and exported to PageMaker.  Then, in

PageMaker

 > > she drew a line 4.72" long and scaled the eps image so that

the

 > > inside top of the rotor housing and the horizontal center

line

 > > matched up with the ends of the 4.72  line.   At this point

the

Leman

 > > drawing was at one to one.  Then, using Pagemaker  tools,

Joy

 > > measured  from the center line to the bottom and top of the

P

Port.

 > > It was 1.2" to the bottom and 3.188 inches to the top.  That

is

close

 > > enough to use a 2"i.d. x 2.25 o.d. aluminum tube for the

insert.

The

 > > runners appear to be same diameter as the port.
 > >
 > > Don't know what I'd do without her.    Jerry
 >

          Jerry,

            Any chance of a drawing of the Lemans housing with

these

numbers

     shown for the artistic and math challenged among us?

 >          Kelly Troyer

I am working on it. Jerry

This might help Jerry.

Paul Lamar

If some one could accurately tell me what the eccentric offset (half

the

"stroke") is, and the radius
from the center of the rotor to the apex points, I could generate an

autocad

file for the housing
shape - Vance J

Eccentricity of rotor journal is .591 inches or 15 mm.
Main journal diameter is 1.6918 to 1.6923 inches.
Rotor journal is 2.9122 to 2.9128 inches.

Paul Lamar

OK But I still need the radius to the rotor tip - Vance

As near as I can measure it from the rotor bearing surface
to the tip is 70.8 mm.

Paul Lamar
 
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