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Date: Fri, 20 Jul 2007 18:09:41 -0500
From: Charlie England <ceengland@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] NSI subi cooling ...
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Bobby J. Hughes wrote:
>  
> I visited with a local NSI subi builder here in Austin on Monday. This 
> guy has the most hours on a NSI conversion. About 735 hours in the last 
> two years. He has had a couple of failure due to assembly errors by NSI 
> in their last days. His engine is a modified 4 cylinder turning about 
> 200 HP. The package uses a single radiator with 735ci core and a small 
> oil to water cooler. He has closed the space between the two air duct 
> feeds to the radiator and attempted to radius the bends in the lower 
> cowl ducts. I am amazed he is cooling as well as he is. He reports climb 
> temps around 195-200 and cruise at 180 on hot days.
>  
> Bobby
>  

There might be a simple explanation for his ability to cool.

What airframe is it?
What is the cruise speed?
What is the fuel burn at that speed?

Thanks,

Charlie