From: "Charlie England ceengland7@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Re: Ross Redrive se ex se
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
References: <list-983016@logan.com>
Message-ID: <b208430a-867b-6538-439a-6a9112708761@gmail.com>
Date: Thu, 26 Nov 2020 21:54:09 -0600
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A good friend of mine is building up a Corvair & planning an Air Trikes 
gear drive for it. No bending loads on the crank, lower BMEP, higher HP, 
more prop dia for mass flow efficiency, etc.

The plane is a major mod of a Bushby Midget Mustang I with retracts. He 
picked the Corvair after finally deciding that the BMW V12 was a bit 
much for the airframe.
;-)
Charlie

On 11/26/2020 9:38 PM, Ernest Christley echristley@att.net wrote:
> What you're missing is that I've been working on Corvairs more than 
> rotaries lately, and should probably remain quiet on the subject.  :-)
>
>
>
>
> On Thursday, November 26, 2020, 6:09:42 PM EST, Stephen Izett 
> stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
>
>
> Why is that?
> Tracy made the comment that even the 2.85 which I have is only really 
> useful for props >than 74”
> Which I understood to be about the tip speed being to low and 
> inefficient with  smaller diameter.
> I dont want to spin my engine more than 7500 rpm.
>
> What am I missing?
>
> Steve
>
>
>


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    <div class="moz-cite-prefix">A good friend of mine is building up a
      Corvair &amp; planning an Air Trikes gear drive for it. No bending
      loads on the crank, lower BMEP, higher HP, more prop dia for mass
      flow efficiency, etc.<br>
      <br>
      The plane is a major mod of a Bushby Midget Mustang I with
      retracts. He picked the Corvair after finally deciding that the
      BMW V12 was a bit much for the airframe.<br>
      ;-)<br>
      Charlie<br>
      <br>
      On 11/26/2020 9:38 PM, Ernest Christley <a class="moz-txt-link-abbreviated" href="mailto:echristley@att.net">echristley@att.net</a> wrote:<br>
    </div>
    <blockquote type="cite" cite="mid:list-983016@logan.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div class="ydpc771ce0ayahoo-style-wrap"
        style="font-family:Helvetica Neue, Helvetica, Arial,
        sans-serif;font-size:13px;">
        <div dir="ltr" data-setdir="false">What you're missing is that
          I've been working on Corvairs more than rotaries lately, and
          should probably remain quiet on the subject.  :-)</div>
        <div dir="ltr" data-setdir="false"><br>
        </div>
        <div dir="ltr" data-setdir="false"><br>
        </div>
        <div dir="ltr" data-setdir="false"><br>
        </div>
        <div><br>
        </div>
      </div>
      <div id="ydpae50292yahoo_quoted_6499706307"
        class="ydpae50292yahoo_quoted">
        <div style="font-family:'Helvetica Neue', Helvetica, Arial,
          sans-serif;font-size:13px;color:#26282a;">
          <div> On Thursday, November 26, 2020, 6:09:42 PM EST, Stephen
            Izett <a class="moz-txt-link-abbreviated" href="mailto:stephen.izett@gmail.com">stephen.izett@gmail.com</a>
            <a class="moz-txt-link-rfc2396E" href="mailto:flyrotary@lancaironline.net">&lt;flyrotary@lancaironline.net&gt;</a> wrote: </div>
          <div><br>
          </div>
          <div><br>
          </div>
          <div>
            <div dir="ltr">Why is that?<br>
            </div>
            <div dir="ltr">Tracy made the comment that even the 2.85
              which I have is only really useful for props &gt;than 74”<br>
            </div>
            <div dir="ltr">Which I understood to be about the tip speed
              being to low and inefficient with  smaller diameter.<br>
            </div>
            <div dir="ltr">I dont want to spin my engine more than 7500
              rpm.<br>
            </div>
            <div dir="ltr"><br>
            </div>
            <div dir="ltr">What am I missing?<br>
            </div>
            <div dir="ltr"><br>
            </div>
            <div dir="ltr">Steve<br>
            </div>
            <div dir="ltr"><br>
            </div>
            <div dir="ltr"><br>
            </div>
            <br>
          </div>
        </div>
      </div>
    </blockquote>
    <br>
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