Mailing List flyrotary@lancaironline.net Message #44075
From: Kelly Troyer <keltro@att.net>
Subject: Redrive Ratio for a Dyke Delta
Date: Wed, 08 Oct 2008 15:16:36 +0000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
  Ernest,
     Wow !!.......You are going to have a torque monster..........What are you thinking
to use for a prop ??...........Sounds like you will need all the diameter and pitch and/or
blades you can get.........Have you considered the 3 blade hi pitch (45"-105") "IVO"
like Jim Mahr has on his 2.85 to 1 Rotary Delta ??......You might need more diameter
than he is using.........My "IVO" is 3 blade, 74 inch but currently has the 30"-90" pitch
blades for my 2.85 to 1 redrive (may not be enough pitch)...........<:)
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

-------------- Original message from Ernest Christley <echristley@nc.rr.com>: --------------


> Kelly Troyer wrote:
> > Ernest,
> > Looking very good !!..........Do I detect the vertical fin off-set for a
> > left hand
> > rotation prop from the photo below ??


> Yes


> > ......Which would probably be a 2:17 to 1
> > ratio for your redrive........Inquiring minds want to know..........<:)

 
> 3.17

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