Mailing List flyrotary@lancaironline.net Message #50100
From: Dennis Haverlah <clouduster@austin.rr.com>
Subject: Re: [FlyRotary] Re: Air Pump
Date: Mon, 15 Feb 2010 22:43:52 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
The problem I have with a belt driven unit is the bearings and pulley - they increase the width and make it hard to fit between the engine and motor.  Attaching the fan to the crankshaft pulley solves that problem if a fan can be found that will produce the needed air flow at our design rpm.  Plus one of the largest leaf blowers new is less than $500.  Can't buy much of a turbo for that price!

Dennis H.

Bill Bradburry wrote:

Dennis,

I think the Lycosaurous people get about ¾ to 1 inch of improvement with ram air at a couple of hundred mph.  That seems consistant with the airspeed of the air from your blower.  Your idea to attach a centrifugal blower up to the pulley is a good one.  You could make it belt driven like the alternator and with a small pulley, crank it up to about 12K rpm!

Pictures??

Bill B 

 



 

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