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Message-ID: <4AA43CEB.5060200@gmail.com>
Date: Sun, 06 Sep 2009 17:51:23 -0500
From: Dave <david.staten@gmail.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Over reving your rotary
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With the prop on I doubt he's getting over 6500 rpm.

Good thing we had an expert there to keep chris out of trouble, eh? <g>


Lynn Hanover wrote:
>   "Well, you know the problem with the rotary is......hot 
> exhaust.....and you know about the apex seals, don't cha".  Do you 
> really want to rev the engine up that much, your crank shaft may not 
> be able to take it with a load  Also, that is not the best prop".  
> "Your engine should not be surging that way"  
>  
> I do enjoy being told about rotaries.
>  
> He was right about the excessive RPM. Real racers turn up sprint 
> racing side port engines barely over 10,000 RPM. My bridgeported 
> engines shift at 9,600 RPM. Periphery port short race engines shift at 
> 10,700 and long race peripherys  a more modest 10,300 RPM. The crazy 
> drag racers do 12,000 RPM.
>  
> So you shoudn't rev yours very high.either. You might get it hot or 
> hurt those pesky apex seals.
>  
> Lynn E. Hanover
> Rotary engines since 1980.
>  
> http://www.youtube.com/watch?v=0BGGBU2Lpyo
>  
> Note the header color during the power runs.