Mailing List flyrotary@lancaironline.net Message #22209
From: George Lendich <lendich@optusnet.com.au>
Subject: Re: [FlyRotary] Re: Sized 13b
Date: Sat, 21 May 2005 09:45:51 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Ernest,
What's this about a PSRU - what have you been designing ?
George ( down under)

> Ed Anderson wrote:
>
> >
> > That is one hunk of a PSRU you are working on Ernest - have you
> > calculated how it would affect your W&B?
>
>
> Very badly.  I didn't run the numbs so much as run FROM the numbers!
>
> It's heavy, 27lbs  for just the gearbox right now.  But my biggest
> chance for weight reduction is in the bellhousing, and there are still a
> lot of other stuff to work out.  I'm looking to save weight up front by:
>
> - using the Harley Davidson alternator
> -keeping the intake very light (we talked about using .025 stainless)
> -moving the waterpump and radiators behind the point of aerodynamic lift
> -very light muffler (probably around 7 lbs)
> -deburr and trim off any piece of the engine that isn't necessary.  
> Those extra studs you have would have to go on my installation.  The
> engine lift attach point on the front housing will see a bandsaw when I
> tear the engine down.
> -I'm still looking for more savings (and aluminum side housings are
> still not out of the question).
>
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