X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=RZTu9Glv c=1 sm=1 tr=0 a=4zkrsQRq7OtPSKxho4NkuQ==:117 a=x7bEGLp0ZPQA:10 a=ad1WmcueCrwA:10 a=nTHF0DUjJn0A:10 a=CjxXgO3LAAAA:8 a=Ia-xEzejAAAA:8 a=pGLkceISAAAA:8 a=7g1VtSJxAAAA:8 a=cxUCdSDNvJM2Qt12E_gA:9 a=XSWyNVOI-NaGgquA:21 a=LYJ8e9VePy_cw-zf:21 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=OJAZQCPpPQ8A:10 a=xmZjhIQqpuw8vatRd8EA:9 a=yzQ_DwT69YssVHrQ:21 a=qyXExm13JWEelMA2:21 a=A7bLwlD7Qdb1y1Gw:21 a=Urk15JJjZg1Xo0ryW_k8:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "William Jepson wrjjrs@gmail.com" Received: from mail-lj1-f177.google.com ([209.85.208.177] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 331359 for flyrotary@lancaironline.net; Wed, 03 Jun 2020 17:25:07 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.177; envelope-from=wrjjrs@gmail.com Received: by mail-lj1-f177.google.com with SMTP id z9so4601517ljh.13 for ; Wed, 03 Jun 2020 14:25:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=KTA+K4GT7IqNIA/CPdanUDwzsKcPdKmqjD0zskkluVw=; b=bABNgbSYkuvmMTC0Bja6KpbeZ7GzsVDtiEo33/4vLobGzrh7jUINeSob2yn6176EfM M+J4Ys7la+KtF/VviV36oJ/Ew1Bwuwo2dtgKo7RWY79brKFeWrKgLsiaro/fT2U6sots lg6eFFUitM9311lVOiV2chVEiFaXci4Vnd987h5hNMJW3sQmDX33dGsusudYQMYLNKtZ 43ycERgaiFDxRbOE5lhNZlt4BfwD2Ws+SEaL4k3uyhdWrJDhN6VzCdfVxirbQ37Y+LTP ovv74sFkDlvlrrdeZ4kbeVP3PHDWQVmAuvIaZVDwsejgJ9GMB1Vgf1LkmBw5VYN+D72O ygEw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=KTA+K4GT7IqNIA/CPdanUDwzsKcPdKmqjD0zskkluVw=; b=Oug6NfjuQmeIpweiXU8Jh040O6EeB1N2tJ3aS2D11f9QDH8cRvAeqn5iXce79hs/Ag GJdRTNtDaskk0fnbv58COgliLNhhrcLorBvPA/z3qRTfcot0torGGlDGarzzxyNXYu0B WvqDqGXznj5ZY39zgO2cjD0HHG+Fb2ZihsN1hXm1ceTOCYy70QKpzKIvbFwtlE6mvWjV dl47+ZJCE59Svx5WmW2+Sy07xpD/s1ct8+0rWxIT/AWeElOIvB/6IYYBAjsEEioLhN/j NoczBWKj06y0tni1xm5OkKxwNISH+uMC/jxUeT0Z/rF9FDcTkGufN8/FrDsZFxqocv9Q q6VQ== X-Gm-Message-State: AOAM531in8c6lFkUYLnL98zOEI8JvGyP9hGiufj44KLVuJ5nz0kljr/4 xShdabKHGj25UEWbcVNlN9Va9jK+UsSYJ/Om8odXPrb4 X-Google-Smtp-Source: ABdhPJwgnJT+93Az69KuCvWWYwacJKd5zsyGU9S7T/bR2smCiFkRtaVUkMEqslPbp2Ss4rdjMc0Js/iSkUbLHaXEwiA= X-Received: by 2002:a2e:9159:: with SMTP id q25mr493614ljg.95.1591219488409; Wed, 03 Jun 2020 14:24:48 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Wed, 3 Jun 2020 14:24:36 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Hello From Utah To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="0000000000005dcc0a05a734a849" --0000000000005dcc0a05a734a849 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Ryan, Sad that the early (70=E2=80=99s) rotary got a bad reputation before gettin= g it right pretty quickly. I actually believe the rotary makes a better aircraft engine than a car engine. Notably fuel consumption, where in aircraft use the rotary is at least as good as other gas engines. The harder you push the rotary the better the relative fuel use! If you research it you will find most 90% of the time failures are from the support equipment not the rotary itself. With the good psru you have it will be very reliable. Bill On Wed, Jun 3, 2020 at 2:10 PM Ryan Hendrickson hendoii@yahoo.com < flyrotary@lancaironline.net> wrote: > Bill, > Thanks for such a detailed explanation! I need the exhaust in that > picture too! I meant to attach a few pictures of my RV-8 in my previous > email. I will have to take some better photos of the firewall forward to > share as we continue this effort. I agree that it;s a shame that more > Rotary assemblies aren't available and that companies like Powersport > weren't able to make a financial go of it. I really like the concept and= I > am highly intrigued by the work others have done. Hopefully I can get to= a > point that I dare fly it out of my local area without abandoning it for a > Lycoming. Pictures attached. > > Thanks again! > > Ryan > > > > On Wednesday, June 3, 2020, 12:08:23 PM MDT, Ryan Hendrickson < > hendoii@yahoo.com> wrote: > > > Bill, > Thanks for such a detailed explanation! I need the exhaust in that > picture too! I meant to attach a few pictures of my RV-8. I will have t= o > take some better photos of the firewall forward to share as we continue > this effort. I agree that it;s a shame that more Rotary assemblies aren'= t > available and that companies like Powersport weren't able to make a > financial go of it. I really like the concept and I am highly intrigued = by > the work others have done. Hopefully I can get to a point that I dare fl= y > it out of my local area without abandoning it for a Lycoming. Pictures > attached. > > Thanks again! > > On Wednesday, June 3, 2020, 11:51:23 AM MDT, William Jepson > wrjjrs@gmail.com wrote: > > > OK Ryan, and other rotary enthusiasts, > This is the configuration that Steve and Everett, (original Powersport) > worked out that was very effective. (see photos attached) The photos show= a > 2 rotor mounted on an RV3, The engine mount wasn't the best they had ever > used, but it shows their best cooling configuration. In the profile shot > you see the stack of components. PSRU, 2 rotor, radiators/oil cooler. The= re > are 3 equally sized heat exchangers. On this plane I believe they were al= l > Setrab, but the manufacturer isn't that important. There are 2 water > radiators arranged in a V with the oil cooler horizontal between the 2 > water rads across the bottom separating the lower ends of the water > coolers, thus \_/. They used various cowl inlets and didn't find a major > difference there. There was an annular inlet on this set up. The inlet ai= r > flowed around the engine which allowed the engine air to be input and > generally kept the accessories from overheating, At the rear of the engin= e > there is a bulkhead fitted across the cowl and sealed. Opening for the > engine air is directly behind the engine and permits the air to flow > between the truncated v with the inside face of all 3 heat exchangers ope= n. > The flow is from the inside out toward the cowl and then exiting at the > central lower location and out towards the rear in a conventional manner. > Three equally sized rads is perfect for the rotary since the oil typicall= y > does about 30% of the heat transfer. The swirl pot and header tank are > inside the "V" nearest the firewall. This layout was used on their primar= y > RV4 test bed and worked great. A side-by-side like an RV6 would work even > better with more room for exit air. The exhaust header is shrouded and ha= s > a blast tube in front to control exhaust heat. This layout should work wi= th > most of the engine mounts folks are using for the rotary. Sadly major > rotary parts are getting difficult to find as this is a very airworthy > layout. > Bill Jepson > > On Tue, Jun 2, 2020 at 7:20 AM Ryan Hendrickson hendoii@yahoo.com < > flyrotary@lancaironline.net> wrote: > > > All, > > My name is Ryan Hendrickson and I have an RV-8 running a Powersport > firewall forward setup out here in Utah. I purchased the plane from the > builder and a mentor of mine shortly before he went west. So > unfortunately, I don't have the benefit of his knowledge to help me tinke= r > on it. Finn has offered some guidance, but I thought it would be also > helpful to find anyone else out there running the Powersport design. > > The motor runs very well, but I am struggling to keep it cool. If I > succeed it solving the cooling issues, I would also love some advice on > building an exhaust. It is currently straight-piped off the header and i= t > is unbearably loud. That said, are there any Powersport aircraft out the= re > that are successfully flying? > > Thanks in Advance, > Ryan > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --0000000000005dcc0a05a734a849 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Ryan,=C2=A0
Sad that th= e early (70=E2=80=99s) rotary got a bad reputation before getting it right = pretty=C2=A0quickly. I actually believe the rotary makes a better aircraft = engine than a car engine. Notably fuel consumption, where in aircraft use t= he rotary is at least as good as other gas engines. The harder you push the= rotary the better the relative fuel use! If you research it you will find = most 90% of the time failures are from the support equipment not the rotary= itself. With the good psru you have it will be very reliable.
Bill

On Wed, Jun 3, 2020 at 2:10 PM Ryan Hendrickson hendoii@yahoo.com <flyrotary@lancaironline.net> wrote:
<= /div>
Bill,
= =C2=A0 =C2=A0 =C2=A0 Thanks for such a detailed explanation!=C2=A0 I need t= he exhaust in that picture too!=C2=A0 I meant to attach a few pictures of m= y RV-8 in my previous email.=C2=A0 I will have to take some better photos o= f the firewall forward to share as we continue this effort.=C2=A0 I agree t= hat it;s a shame that more Rotary assemblies aren't available and that = companies like Powersport weren't able to make a financial go of it.=C2= =A0 I really like the concept and I am highly intrigued by the work others = have done.=C2=A0 Hopefully I can get to a point that I dare fly it out of m= y local area without abandoning it for a Lycoming.=C2=A0 Pictures attached.= =C2=A0

Than= ks again!=C2=A0=C2=A0

Ryan= =C2=A0



=20
=20
On Wednesday, June 3, 2020, 12:08:23 PM MDT, Ryan Hendr= ickson <hendoii@y= ahoo.com> wrote:


Bill,
=C2=A0 =C2=A0 =C2=A0 T= hanks for such a detailed explanation!=C2=A0 I need the exhaust in that pic= ture too!=C2=A0 I meant to attach a few pictures of my RV-8.=C2=A0 I will h= ave to take some better photos of the firewall forward to share as we conti= nue this effort.=C2=A0 I agree that it;s a shame that more Rotary assemblie= s aren't available and that companies like Powersport weren't able = to make a financial go of it.=C2=A0 I really like the concept and I am high= ly intrigued by the work others have done.=C2=A0 Hopefully I can get to a p= oint that I dare fly it out of my local area without abandoning it for a Ly= coming.=C2=A0 Pictures attached.=C2=A0

Thanks again!=C2=A0=C2=A0

=20
=20
On Wednesday, June 3, 2020, 11:51:23 AM MDT, William Je= pson wrjjrs@gmail.com= <f= lyrotary@lancaironline.net> wrote:


OK Ryan, and other rotary ent= husiasts,
This is the configuration that Steve and Everett, (original P= owersport) worked out that was very effective. (see photos attached) The ph= otos show a 2 rotor mounted on an RV3, The engine mount wasn't the best= they had ever used, but it shows their best cooling configuration. In the = profile shot you see the stack of components. PSRU, 2 rotor, radiators/oil = cooler. There are 3 equally sized heat exchangers. On this plane I believe = they were all Setrab, but the manufacturer isn't that important. There = are 2 water radiators arranged=C2=A0in a V with the oil cooler horizontal b= etween the 2 water rads across the bottom separating the lower ends of the = water coolers, thus \_/. They used various cowl inlets and didn't find = a major difference there. There was an annular inlet on this set up. The in= let air flowed around the engine which allowed the engine air to be input a= nd generally kept the accessories=C2=A0from overheating, At the rear of the= engine there is a bulkhead fitted across the cowl and sealed. Opening for = the engine air is directly behind the engine and permits the air to flow be= tween the truncated v with the inside face of all 3 heat exchangers open. T= he flow is from the inside out toward the cowl and then exiting at the cent= ral lower location and out towards the rear in a conventional manner. Three= equally sized rads is perfect for the rotary since the oil typically does = about 30% of the heat transfer. The swirl pot and header tank are inside th= e "V" nearest the firewall. This layout was used on their primary= RV4 test bed and worked great. A side-by-side like an RV6 would work even = better with more room for exit air. The exhaust header is shrouded and has = a blast tube in front to control exhaust heat. This layout should work with= most of the engine mounts folks are using for the rotary. Sadly major rota= ry parts are getting difficult to find as this is a very airworthy layout.<= /div>
Bill Jepson

O= n Tue, Jun 2, 2020 at 7:20 AM Ryan Hendrickson hendoii@yahoo.co= m <flyrotary@lancaironline.net> wrote:<= br clear=3D"none">

All,
=C2=A0 =C2=A0
=C2=A0 =C2=A0 =C2=A0M= y name is Ryan Hendrickson and I have an RV-8 running a Powersport firewall= forward setup out here in Utah.=C2=A0 I purchased the plane from the build= er and a mentor of mine shortly before he went west.=C2=A0 So unfortunately= , I don't have the benefit of his knowledge to help me tinker on it.=C2= =A0 Finn has offered some guidance, but I thought it would be also helpful = to find anyone else out there running the Powersport design.=C2=A0

=C2=A0 =C2= =A0 The motor runs very well, but I am struggling to keep it cool.=C2=A0 If= I succeed it solving the cooling issues, I would also love some advice on = building an exhaust.=C2=A0 It is currently straight-piped off the header an= d it is unbearably loud.=C2=A0 That said, are there any Powersport aircraft= out there that are successfully flying?

Thanks in Advance,
R= yan=C2=A0


--
Homepage:= =C2=A0 http://www.flyrotary.com/
Archive= and UnSub:=C2=A0 http://mai= l.lancaironline.net:81/lists/flyrotary/List.html
--
Homepage:=C2=A0 http://www.flyrotary.com/
Archive and UnSub:=C2=A0 =C2=A0http://mail= .lancaironline.net:81/lists/flyrotary/List.html
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