Subject: Alternator bracket
From: Rotary Engine
Date: 9/18/2005, 8:15 AM
To: AA-me


Paul,  I have the photos of your alternator bracket.  Any chance
there is a measured drawing?   Jerry

Not much of one. If you are not using the crank angle sensor
the dimensions are not critical. I made mine out of a chunk of angle
iron. Don't make them out of aluminum. Aluminum alternator brackets
are infamous for cracking for some strange reason. 4130 is the best.

Here is the drawing.
http://www.rotaryeng.net/alternat.gif
And a picture.
http://www.rotaryeng.net/assembled-alt.jpg

Not guaranteed to fit your alternator. You will have to build a  prototype.

Paul Lamar

Jerry, have you considered what Bill Schertz did with his alternator
bracket and rear motor mount combined?  Will work with our latest
scheme for the rear motor mount using the 1/2 inch rubber rod end.
Kills two birds with one bracket.

Paul Lamar

Yes,  I have been looking at Bill's alternator bracket.  I am going
to do something similar only out of steel.  I don't see how we can
use the engine mount strut except on those aircraft that have a solid
firewall  to fasten to.  Be neat if we could use Bill's strut mount
and tie it back into the existing engine mount structure.  If that is
possible, I am  interested.      Jerry

Yes I think we can do something like that.

Paul Lamar


Here are some ideas. Seems it would be easier to just rivet a hat section
the firewall. You could supply the steel hat section bracket.

Paul Lamar

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