Mailing List flyrotary@lancaironline.net Message #47608
From: Ernest Christley <echristley@nc.rr.com>
Subject: Re: [FlyRotary] Re: Actual rotary engine work...was Re: [FlyRotary] Re: T-shirt design
Date: Thu, 06 Aug 2009 14:57:06 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Ed Anderson wrote:
Ernest, I would highly recommend that if you are going to mount your
radiator that way with the bolt touching the back of the core, that you
sheath it in a thin abrasive resistant plastic/rubber tube.  If it is
touching one of your cross channel tube all the more so.   
You can barely see it at the far end of the radiator, but the all-thread is pushed through a piece of 3/8" nylon tube.  I might switch it to a silicon tube in the future, but this is good enough for now.
Better would be to move it out 1/4" or so away from the core.
  
It started a 1/4" from the core.  As the nuts are tightened to pull the ears to wrap around the core, it makes the rod bend and push the back of the radiator.  Everything is locked into place.
Nice job on the fiberglass duct, but you may find positive pressure inside
the duct will leave the edges up off the metal.  Also unless sealed inside,
the core tank ridges will provide plenty of opportunity for those air
molecules to evade going through the core.
  
The black smudges at the top and bottom.  Silicon sealant.  I know that Tracy recommends red, but I had black on hand.  Also, the way the duct is shaped, the upper lip is really stiff.  (oh, no...here come the puns).

The sides will need a few squirts of spray foam.  It is such a small amount, that I won't do that until I need some for something else.

--
Ernest Christley, President
Ernest@TechnicalTakedown.com

TechnicalTakedown, LLC
www.TechnicalTakedown.com
101 Steep Bank Dr.
Cary, NC  27518
(919) 741-9397

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