From: "Charlie England" <flyrotary@lancaironline.net>
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Date: Sun, 5 Feb 2017 15:09:42 -0600
Message-ID: <CAHxyc51TjCf6q9gxDu=0yE7xDCJ-0LnV-sWNOLck90gvJ35=rg@mail.gmail.com>
Subject: Re: [FlyRotary] Source for P-Port Templates?
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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On Sun, Feb 5, 2017 at 1:09 PM, Richard Van Camp <
flyrotary@lancaironline.net> wrote:

> One of the aftermarket rotary engine builder used to supply the p-port
> templates at little or no cost.  Does any recall who this was?
> Alternatively, does anyone have these and can send me a duplicate?  The
> P-Port will give me all the power I need (!210 hp) so, I do not see any
> reason for me to add a turbo.
>
> Rick
>
> Hi Rick,

The two biggest vendors in the USA are Racing Beat and Mazdatrix, but I
didn't find a P-port template on either site when I looked just now. One
technique I've seen is to assemble an end plate, rotor, E-shaft and rotor
housing so that when you rotate the e-shaft, you can see where the apex
seal falls on the rotor housing as the rotor closes the side port. That
would be approximate position of the 'bottom' of the P-port in the rotor
housing. At that point, decide how big you want the port to be, measure
'up' half that diameter, and start boring, centered fore/aft in the housing.

If you look at various pics of P-ported housings, the diameter and position
of the port seems to vary quite a bit, so....

I know Bill has been working with one of the original Powersport principals
on a P-port with smaller diameter ports for more reasonable rpm/power
levels suitable for a/c; maybe he will jump in with more info.

Charlie

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Sun, Feb 5, 2017 at 1:09 PM, Richard Van Camp <span dir=3D"ltr">&lt;=
<a href=3D"mailto:flyrotary@lancaironline.net" target=3D"_blank">flyrotary@=
lancaironline.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote=
" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">O=
ne of the aftermarket rotary engine builder used to supply the p-port templ=
ates at little or no cost.=C2=A0 Does any recall who this was?=C2=A0 Altern=
atively, does anyone have these and can send me a duplicate?=C2=A0 The P-Po=
rt will give me all the power I need (!210 hp) so, I do not see any reason =
for me to add a turbo.<br>
<br>
Rick<br><br></blockquote><div>Hi Rick,</div><div><br></div><div>The two big=
gest vendors in the USA are Racing Beat and Mazdatrix, but I didn&#39;t fin=
d a P-port template on either site when I looked just now. One technique I&=
#39;ve seen is to assemble an end plate, rotor, E-shaft and rotor housing s=
o that when you rotate the e-shaft, you can see where the apex seal falls o=
n the rotor housing as the rotor closes the side port. That would be approx=
imate position of the &#39;bottom&#39; of the P-port in the rotor housing. =
At that point, decide how big you want the port to be, measure &#39;up&#39;=
 half that diameter, and start boring, centered fore/aft in the housing.</d=
iv><div><br></div><div>If you look at various pics of P-ported housings, th=
e diameter and position of the port seems to vary quite a bit, so....</div>=
<div><br></div><div>I know Bill has been working with one of the original P=
owersport principals on a P-port with smaller diameter ports for more reaso=
nable rpm/power levels suitable for a/c; maybe he will jump in with more in=
fo.</div><div><br></div><div>Charlie</div></div><br></div></div>

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