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Date: Sun, 11 Jul 2010 10:54:49 -0500
From: Charlie England <ceengland@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Dyno
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On 7/9/2010 9:09 PM, John wrote:
> I believe that the difference in cost between the rotary and a new 
> 0-360 Lycoming would furnish you with fuel for years of flying, which 
> is reason enough.   Av-gas here is $6.29 to $6.69 a gallon, no lead is 
> $2.549.  JohnD
Unfortunately, you can't really use that as a comparison. I run premium 
car gas in the Lyc I'm currently flying, so my 'avgas' cost is around 
2.80-3.00.

Also unfortunately, the installed cost of a used rotary (hardly anyone 
buys a new crate engine from Mazda) & all the parts to make it fly, more 
than equals the cost of a mid-time Lyc.

Now if you want to discuss overhaul costs....But I don't know of anyone 
except Tracy & the gyro guy from Texas (I think) who have put even half 
the hours on a rotary that it would take to reach a typical Lyc TBO.

The upsides to me are the *potential* for higher reliability and the 
potential for advancing aviation engine technology. And the fun of 
actual experimental aviation, beyond the typical kit assembly.

Charlie