From: "Charlie England" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Rotary PRSU
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Date: Sun, 9 Jul 2017 12:42:12 -0500
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On 7/9/2017 11:31 AM, ROY GLENN wrote:
> Does any one know of a reliable PRSU for the 20B rotary engine capable of handing up to 500 HP+ /?
>
> Thanks Roy
> --
Hi Roy,

Been hanging out on the dark side? ;-)

Some of the airboat reductions for V-8s claim to be good for close to 
1,000 HP, but I'd tread carefully because they see  4-per-rev torque 
impulses instead of 2. Significant because it means that *peak* torque 
will be lower, and they might not be tuned to handle the lower frequency 
impulses from the rotary (resonance issues).

Having said that, what airframe are you considering? Not many single 
engine a/c are designed for that much HP. For that matter, I might have 
to question the reliability of the engine itself if it's being operated 
at that level.

Charlie

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