Mailing List flyrotary@lancaironline.net Message #67038
From: Terry Adams terrywadams@sbcglobal.net <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Marcotte 2.4:1 vs RWS RD-1C 2.85:1
Date: Thu, 14 Oct 2021 21:18:38 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Les,
The IVO prop may be the weak link.  Quite some time ago there was information posted concerning the prop blades.  I am not in a position to say, but you may want to do some additional research.

Terry

On 10/14/2021 6:38 PM, Les C lesphoto@hotmail.com wrote:
I have the good fortune to have both of these redrives in my garage as I have gathered parts for my BD-4 project.  I took advantage of timely offers and can only use one of them.  My motor is a 20b built by Bob Darrah.  I like the idea of keeping the RPM's down with the Marcotte drive to 6500, but the RWS drive would allow me to develop additional power at 7500.  I have an IVO prop that I will be using with inflight "controllable" pitch. 

So I throw it out there to you.  Which PRSU do I keep?

Les Criscillo
Nurse, Pilot, Brewmaster, Maker

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