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Date: Sun, 12 Jun 2005 19:56:08 -0700 (PDT)
From: Michael LaFleur <mike.lafleur@sbcglobal.net>
Subject: Re: [FlyRotary] T3-60 compressor map for Dave.
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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To arrive at PR points on the map, you must have
airflow calculated. What VE are you assuming for the
rotary?

Mike L.

--- Ian Dewhirst <ianddsl@magma.ca> wrote:

> Hi Dave, I have attached a T3 60 series compressor
> map.  Based on your
> spreadsheet it should be a good match. A new wheel
> and housing is not too
> expensive, install and balance was around $100 last
> I had it done.  If you
> would like another compressor map I could look
> through my collection, I have
> about 60 or so, though some are not the best because
> they were faxed to me
> back in the days of thermal fax machines.
> 
> The red line on the image is 30" map, blue is 35",
> green is 40"
> 
> In your spreadsheet I think your pressure drop
> across the intercooler is too
> high, 2 psi for the intercooler and 0.5 psi for the
> throttle body might be
> closer, I took my laptop for a ride in my car and
> went for a drive to
> confirm this, I lose 1.2 psi across a Spearco
> intercooler, and 0.3 across
> the TB, I tried to aproximate the flow you are
> planning.  Compressor
> efficiency is a bit low at 60%.  VE might be a bit
> high.  Adjusting these
> figures will move the lines I drew on the image to
> the right and down.  If
> you decide on a stree port the map will look better
> still.
> 
> -- Ian
> > >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:  
> http://lancaironline.net/lists/flyrotary/List.html
>