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From: "George Lendich" <lendich@optusnet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-2366266@logan.com>
Subject: Re: [FlyRotary] Re: motor decisions!
Date: Thu, 4 Oct 2007 07:34:01 +1000
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> Thanks Al, Ed, Bob, Bill, George and Chris for your replies and insight.
> My plane is a SP4000 made by Australian Lightwing, similar to a RV10
> just less rivets as it has a steel frame, composite skin and aluminium
> wings which are all supplied built, just have to bolt together, add an
> engine & bits to get to that 90% done 90% to go stage.
>
> I've found a 4 port Renesis to play with, I notice Tracy uses one of
> these so I'm guessing they are nearly equivalent to the 6 port in
> aircraft use. Its missing the intake manifold so those 2 injectors need
> replacing, is it possible to use any injectors or is it best to have a
> matched set.
>
> The 20b will lose its re-drive but stay in the shed ready to install,
> just in case I need more weight on the nose :)
>
>
> Regards
> Andrew Martin
Andrew,
You can always add weight, you could move the engine forward and have a 
slightly longer nose, this could also reduce your flat plate drag area. The 
extra room could be used for duel batteries and any manner of accessories 
etc.
I would not worry about not having enough weight at this point in time.
George (down under)