Stan Blanton wrote:

Hi all,

Here's my first post to the list.

I was looking at the Racing Beat web site and saw they have aluminum housing available. What is the experience with these? Things like heat transfer and thermal expansion come to mind. I know they are real expensive but the weight savings is attractive. Is there any data out there on these housings?

Stan Blanton
A Rotary Wannabe

Jim has several hundred hours on the dyno at the 300 HP per rotor level.
But I don't know anybody rich enough to have run them in an aircraft yet :-)>
Alturdyne claimed they ran some in a one rotor BD 5 motor but I am
not sure if it flew. Their main business was gen sets.

Here is an idea I had a while back. The cut away shows what you must
do to get the water to go where it is supposed to go.

Paul Lamar

Paul, did you cut the housing open on this picture?  If so how did you do it.
Royce

I did not do it but it was done on a mill. Probably with a fly cutter.
Note: you don't need the side ports.

Paul Lamar

True Paul, no need for the side port to be in the way.
We have been looking for someone locally that has a large enough band saw to cut a housing in half for us so we would have both patterns.  So far no one can do it, or don't want to try.
Did find a man that said he would see if he could come up with a way to do it on his saw.  We'll see.  May have to build a large band saw and do it ourselves.
Royce

It won't fit in a DoAll?

BTW If RPI was serious about building and selling rotary engines they should be selling
a version of the Mazda with aluminum end housings. If nothing else it would prop
up their sagging credibility. 

Paul Lamar
 
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