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One more technical note.  I saw a pretty motor at EAA-Arlington a few years back.  Really snazzy radial. 
 
Now, feature this.  The "crank shaft" was an ellipse track that the pistons (8 of `em) ran on.  Thus, each piston went up and down TWICE per "crank" revolution.
 
Critique:
An ellipse is hard to precision form or manufacture.
The "grip" of the pistons on the track would be a bugger to engineer and debug.
The wear would all occur on the quarter of the ellipse that was below the "combustion cycle."
 
Upshot:  No investors and no snazzy radial for the front of one's Ercoupe.
 
Percy in NM, USA


From: Charles Waldo [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 09, 2006 11:53 AM
To: Ercoupe Tech
Subject: Re: Fwd: [COUPERS-TECH] Mazda/Wankel engine conversion 
 
turned out the rotary's where VERY loud and it ended up being a toss up on which engine was better based on weight,performance and cost..........
 
Chuck

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