Mailing List flyrotary@lancaironline.net Message #63550
From: Bill Bradburry <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Engine Mount design
Date: Mon, 10 Jul 2017 22:49:04 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>

Mark,

 

I think you will find that about 90% of the engine, PSRU, prop weight will sit on the two front ears of that plate.  That is very close to the CG for those items.

 

Bill B

 


From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Monday, July 10, 2017 3:36 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Engine Mount design

 

Well I think I have designed my mount for the Glasair.  Overall I think it will be a bit overkill but I am ok with that.

 

Should put the CG close to the same spot as for the Lyco.  Thrust point in the same spot.  Green bars were part of the Glasair mount for a Lycoming. (There was also one between the two upper points but I don’t think any of them are truly necessary with the stabilization of the plate.  Yellow bar I am calling optional at this point to make it easier to work with intake/exhaust.  Another idea we had was to weld on a flange for both sides of the yellow bar and have it bolt on during final install.

 

Thoughts?

 

Mark

 

 

 

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