X-Virus-Scanned: clean according to Sophos on Logan.com From: "Mark Steitle" Received: from mail-wg0-f51.google.com ([74.125.82.51] verified) by logan.com (CommuniGate Pro SMTP 6.1.3) with ESMTPS id 7781486 for flyrotary@lancaironline.net; Sun, 21 Jun 2015 16:29:31 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.82.51; envelope-from=msdstx@gmail.com Received: by wgbhy7 with SMTP id hy7so125974819wgb.2 for ; Sun, 21 Jun 2015 13:28:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=/vMmsK6+Eex5oz/RpsRXCl/l4kOjVwTIqk3ru6sK538=; b=OsLxvWRSmzn5yRySyW0Ceaa/CfuccMDZq1oS1ro9o+MUjZ8S8ejF4gUfBfTZ+8nURB 8xawGE+CFqXl1G0k+XWdmsL7ob9QjGhVucyB1k1OmqGcgfc+YkA5rusbV29zuCMqN69X kXWFzOwHOr/XoZKMc2uzMHeMCfqDoGSwHy0Yk8ambwkJQi0/FfGSJU3h9ZlF4AnQAAS0 YLXTHfw9Cf8W+Tc9NnKrJSSvPqP8wgiHimHWCD3IAeXhCOgrc6v5xsEGXl6S4zOgLzA/ /AhDzNYj3jJ1qkG2/DQ8PSb459xgGh2ZxCk9DIpVDYg+YlEqSOc9a2RJ5vmcG7l96HAB Fk8g== MIME-Version: 1.0 X-Received: by 10.194.173.225 with SMTP id bn1mr34817491wjc.83.1434918534783; Sun, 21 Jun 2015 13:28:54 -0700 (PDT) Received: by 10.194.176.6 with HTTP; Sun, 21 Jun 2015 13:28:54 -0700 (PDT) In-Reply-To: References: Date: Sun, 21 Jun 2015 15:28:54 -0500 Message-ID: Subject: Re: [FlyRotary] PERIPHERAL PORT INFO (Mark Steitle) To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=089e013c632e8c28ff05190d0164 --089e013c632e8c28ff05190d0164 Content-Type: text/plain; charset=UTF-8 Kelly, P-port 20b is working great. It loves to rev. and produces noticeably more HP at WOT than the side port motor did (verified by increase in TAS) I first tried the boring and welding process on a scrap housing and didn't detect any warping or shrinkage, so I decided to go ahead and do it to the good housings. I think my "test housing" is the picture that PL posts when he discusses welding the p-ports. The sealing plates only seal around the large inlet tubes and don't totally solve the problem of sealant leakage. They could use a second o-ring, or gasket, between the sealing plate and the housing surface, IMHO. There is the potential for leakage where you bolt the plates to the housings. I had some small but persistent leaks around the small 1/4" dia. bolts. I was finally able to get those to seal by putting a small counter-sink where the bolt head touches the plate and using an o-ring under the bolt head. I used button-head bolts. This solved that problem. You'll also have to figure out the intake. Rumor has it that the throttle plate needs to be as close to the port as possible for good idle characteristics. You could save weight by engineering the throttles into the housing, or do like I did and use three 1-bbl throttle bodies located as close to the SS inlets as possible. I found a set of three 48mm tb's off a sea-doo for $100. I chose these because they had injector bosses cast right into the TB housing. I had to machine a new throttle shaft to get the spacing right for the 3-rotor. But they are working out nicely. Thanks, Mark On Sun, Jun 21, 2015 at 9:56 AM, Kelly Troyer wrote: > Mark, > > Even though I am going to the Dark Side (IO-360) for expediency for the > time > being I still want to use a Rotary eventually.........I am seriously > thinking about > P porting my 13B and would like to know how your 20B is holding up > particularly > at your port insert junction using the machined plates and > sealant.........Have you > had any major problems with leaks so far ?.........I have a pair of plates > from Paul > that have the "O" rings and if I recall correctly your plates were prior > to the ones > with "O" rings..........I am curious whether you had any major problems > when you > were smoothing and putting the radius the "TIG" welds........On the same > question > did the "TIG" welding seem to cause any warping of the rotor hsg steel > liner ?........ > > Thanks, > Kelly Troyer > > --089e013c632e8c28ff05190d0164 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Kelly,

P-port 20b is wor= king great.=C2=A0 It loves to rev. and produces noticeably more HP at WOT t= han the side port motor did (verified by increase in TAS)=C2=A0 I first tri= ed the boring and welding process on a scrap housing and didn't detect = any warping or shrinkage, so I decided to go ahead and do it to the good ho= usings.=C2=A0 I think my "test housing" is the picture that PL po= sts when he discusses welding the p-ports.=C2=A0 The sealing plates only se= al around the large inlet tubes and don't totally solve the problem of = sealant leakage. They could use a second o-ring, or gasket, between the sea= ling plate and the housing surface, IMHO.=C2=A0 There is the potential for = leakage where you bolt the plates to the housings.=C2=A0 I had some small b= ut persistent leaks around the small 1/4" dia. bolts.=C2=A0 I was fina= lly able to get those to seal by putting a small counter-sink where the bol= t head touches the plate and using an o-ring under the bolt head.=C2=A0 I u= sed button-head bolts.=C2=A0 This solved that problem.=C2=A0

= You'll also have to figure out the intake.=C2=A0 Rumor has it that the = throttle plate needs to be as close to the port as possible for good idle c= haracteristics.=C2=A0 You could save weight by engineering the throttles in= to the housing, or do like I did and use three 1-bbl throttle bodies locate= d as close to the SS inlets as possible.=C2=A0 I found a set of three 48mm = tb's off a sea-doo for $100.=C2=A0 I chose these because they had injec= tor bosses cast right into the TB housing.=C2=A0 I had to machine a new thr= ottle shaft to get the spacing right for the 3-rotor.=C2=A0 But they are wo= rking out nicely.

Thanks,
Mark=C2=A0

On Sun, Jun 21, 2015 at= 9:56 AM, Kelly Troyer <flyrotary@lancaironline.net> wrote:
Mark,

=
=C2=A0 =C2=A0Even though I am going to the Dark Side (IO-360) for expe= diency for the time
being I still want to use a Rotary eventually= .........I am seriously thinking about=C2=A0
P porting my 13B and= would like to know how your 20B is holding up particularly=C2=A0
at your port insert junction using the machined plates and sealant........= .Have you=C2=A0
had any major problems with leaks so far ?.......= ..I have a pair of plates from Paul
that have the "O" r= ings and if I recall correctly your plates were prior to the ones=C2=A0
with "O" rings..........I am curious whether you had any m= ajor problems when you
were smoothing and putting the radius the = "TIG" welds........On the same question
did the "T= IG" welding seem to cause any warping of the rotor hsg steel liner ?..= ......
=C2=A0=C2=A0
=C2=A0Thanks,
=C2=A0= Kelly Troyer


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