X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=G+5i7Os5 c=1 sm=1 tr=0 a=h/2l+vn1J2DkYOOB9BQDdQ==:117 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=x7bEGLp0ZPQA:10 a=ad1WmcueCrwA:10 a=FmdZ9Uzk2mMA:10 a=UKPAHat8AAAA:8 a=Ia-xEzejAAAA:8 a=pGLkceISAAAA:8 a=djemcrw3AAAA:8 a=on22okXAAAAA:8 a=JoQWYm39AAAA:8 a=7g1VtSJxAAAA:8 a=kKPVVts23kLSgtMeCG8A:9 a=22FDjbO_tR773eAl:21 a=B0drk4XqpXoXWExi:21 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=UwKQjh2I8EylLkDS-BcA:9 a=rp8acfAIov5d9QPm:21 a=ofttUq36pWSRZe7P:21 a=NZgjdv5hROZ5beoZ:21 a=Fc6xXSS-RxGHxrvp76Qp:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=rUixLVA0M3wEG775Z1vR:22 a=NPqpj5bUEVj9vR1HIonK:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "William Jepson wrjjrs@gmail.com" Received: from mail-ed1-f52.google.com ([209.85.208.52] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 12900898 for flyrotary@lancaironline.net; Wed, 28 Aug 2019 12:26:38 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.52; envelope-from=wrjjrs@gmail.com Received: by mail-ed1-f52.google.com with SMTP id g24so712375edu.3 for ; Wed, 28 Aug 2019 09:26:38 -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=3486i48Z5oi9wWVZA3CNzviTXTYhGqplC8FuRv7rM7Q=; b=tUf8ZjmiBZnw5xKlYx4KXbI5cjjn9zWrGZT+nU+jSYc/sBM/6ngXnqh8m43BdE8j3f 6of5KTtcR2PrEWVBXCLO+AgAO8oXICuS9t2my6Cnhayd2ejLbnAEUkmlEotfzpp5EAbD M7o3f7Bb77SjijsTLP7fa8ScgD9zIG3nYb/3hS0uchVOdYZ/4hp1Qy1KJ08xPGYIkQH1 xFR+Yy7q2ct4kg9Wy6E+QaXGZiIHL1WbWC56+juAAMT2CHOePM5K8Um7VsQnUwAWZxoH upPTHAo2MFm7sZM3YZNoLkAvFxo/lATW8XYJfXwG6qBs/5pjWPpJ0t+Sc2VMJd7RVhgL MAOg== 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=3486i48Z5oi9wWVZA3CNzviTXTYhGqplC8FuRv7rM7Q=; b=R87TFi2kSxiBFivz8C8laLgkEm1gcYrwvcyjF6ZYYqxLnazcl7HFx/IeLiZ87l29OY xSJeU+muaWryhUBAhy22XKDuZ88QMRKuJNazQf7iiMHWbdftcGWkC8PYQ2cHqvJpEMd8 kp0+LVXZEY0651MyxJcXyWoKbW2zieJXKHYI0X2yxyf5n3co6Pbw7fK707U6TO50zH8M 0oTIcdwryCLR8AXujmKOMuFKtispnW0tjXR3nCpZOjM3JNfKotwDhhJbX3C1lN/tTQqb KLG4RvrLtIiD+l4I7G7LZIafUet+8VckalofaaNR8i5bu4JTM56ClePagp3gPackJDGw E0AA== X-Gm-Message-State: APjAAAWc0C7ddI9IKNV29/RNIjyl74wcz5N8sCO94cXVSPRjP+UarqI1 xqwmZlOjJN1T3F5p/L0dIenB/5fJ7afmBgLRiVwniw== X-Google-Smtp-Source: APXvYqzBAR9zbz4BPw/1zaNP0BeUpHGD3ferFVJBbrUa7aeFUD/lEwdFAV7OPGZH4oUd6XEm/7Sm8U5q5zc0z7kh+80= X-Received: by 2002:a17:906:4bc2:: with SMTP id x2mr4056119ejv.95.1567009580228; Wed, 28 Aug 2019 09:26:20 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Wed, 28 Aug 2019 09:26:09 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Curved aluminum radiators To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="00000000000063a5b305912fd9a7" --00000000000063a5b305912fd9a7 Content-Type: text/plain; charset="UTF-8" Bobby, That was the Wisconsin later Powersport. The owner broke his arm in the crash. It was an electrical failure. No mechanical issues. On Wed, Aug 28, 2019 at 4:50 AM Bobby J. Hughes bhughes@qnsi.net < flyrotary@lancaironline.net> wrote: > One RV8 had an electrical failure. I believe a conventional aircraft power > /mag switch was used and failed. > > Bobby > > Sent from my iPad > > On Aug 28, 2019, at 12:18 AM, Todd Bartrim bartrim@gmail.com < > flyrotary@lancaironline.net> wrote: > > Hi Bill; > I took a bit of time and did a bit of searching and I had more > confirmation that my memory isn't as sharp as it should be.... > Everette's fatal crash was not rotary related, it was the Mistral crash > that I was thinking of and it was not fatal and was apparently caused by a > muffler failure, not an oil cooler. > So what did happen to Powersport? > > Todd Bartrim > > > On Tue, Aug 27, 2019 at 8:47 AM William Jepson wrjjrs@gmail.com < > flyrotary@lancaironline.net> wrote: > >> Le Roux, That wasn't the final setup that I described. Rather it was an >> earlier less effective one. >> Todd, Everette's crash wasn't caused by a cooler. Not an engine related >> failure. >> Bill >> >> On Tue, Aug 27, 2019 at 1:17 AM Le Roux Breytenbach >> breytenbachleroux@gmail.com wrote: >> >>> Todd/Jeff This is a link that i has got on the old Powersport "Set Up" >>> >>> http://www.redbackaviation.com/powersports-rebirth-rotary-engine/ >>> >>> There is a picture of the oilcooler and radiator set up >>> This is all i can get >>> >>> On Mon, Aug 26, 2019 at 2:28 PM Jeff Whaley jwhaley@datacast.com >>> wrote: >>> > >>> > Todd, just catching up on the blog after a week of vacation ... my >>> main thought is that doubling your Surface AREA will have far more positive >>> affect than the negative effects of halving your CUBIC area ... cubic >>> inches of radiator is misleading - surface area is far more important. >>> > Jeff >>> > >>> > I'm considering making some changes to my cooling system as it is not >>> adequate when flying low & slow, as on recent flights on a few hot days. >>> I'm still using a set of evap cores as they fit the limited space on either >>> side of the PSRU in an RV cowl. >>> > Bill Jepson made mention of a curved radiator earlier this summer, >>> which has been simmering on a hot spot way back in my brain ever since. >>> I've spent the last few days looking real hard at the idea. >>> > The size and shape of the curve looks like it would conform quite >>> nicely to the bottom of the RV cowl. so that the top of the rad would be >>> perpendicular to the airflow while the bottom will curve away. This would >>> require a new ducts to be glassed to take advantage of this, but that would >>> allow for more time and room to slow down the airflow for greater >>> efficiency. It would also almost double the square inches of cooling area >>> than I currently have, however as it is thinner it would provide half of >>> the cubic inches of volume as I currently have. >>> > The small thick rads I currently use were chosen more with high >>> speeds in mind (well, and of course ease of installation), but now I'm >>> thinking that I'd rather have a thinner rad that would perform better on >>> the ground and in slow flight. These curved rads seem like they could offer >>> some advantages. >>> > I've just found them listed on Amazon.ca for $148CAD with free >>> shipping (x2)which seems pretty reasonable, so for $300, it might offer a >>> significant cooling upgrade.... or maybe not. >>> > I wish I could find an old one to cut open to inspect, test weld, >>> check for fit, etc. >>> > >>> > Does anybody have any thoughts on the idea? I'm on the edge so it >>> wouldn't take much to push me over, or pull me back.... >>> > >>> > -- >>> > 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 >>> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html >> > --00000000000063a5b305912fd9a7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Bobby, That was the Wisconsin later Powersport. The = owner broke his arm in the crash. It was an electrical failure. No mechanic= al=C2=A0issues.

On Wed, Aug 28, 2019 at 4:50 AM Bobby J. Hughes <= a href=3D"mailto:bhughes@qnsi.net">bhughes@qnsi.net <flyrotary@lancaironline.net> wrote:<= br>
One RV8 had an el= ectrical failure. I believe a conventional aircraft power /mag switch was u= sed and failed.=C2=A0

Bobby

Sent from my iPad

On Aug 28, 2019, at 12:18 AM= , Todd Bartrim bartr= im@gmail.com <flyrotary@lancaironline.net> wrote:

Hi Bill;
=C2=A0 I = took a bit of time and did a bit of searching and I had more confirmation t= hat my memory isn't as sharp as it should be....
Everette'= ;s fatal crash was not rotary related, it was the Mistral crash that I was = thinking of and it was not fatal and was apparently caused by a muffler fai= lure, not an oil cooler.
So what did happen to Powersport?=C2=A0<= /div>

T= odd Bartrim


On Tue, Aug 27, 2019 at 8:47 AM Will= iam Jepson wrjjrs@gma= il.com <flyrotary@lancaironline.net> wrote:
Le Roux, That wasn't = the final setup that I described. Rather it was an earlier less effective o= ne.
Todd, Everette's crash wasn't caused by a cooler. Not an en= gine related failure.
Bill=C2=A0

On Tue, Aug 27, 2019 at 1:1= 7 AM Le Roux Breytenbach breytenbachleroux@gmail.com <flyrotary@lancaironline.net>= ; wrote:
Todd/Je= ff This is a link that i has got on the old Powersport "Set Up"
http://www.redbackaviation.com/powe= rsports-rebirth-rotary-engine/

There is a picture of the oilcooler and radiator set up
This is all i can get

On Mon, Aug 26, 2019 at 2:28 PM Jeff Whaley jwhaley@datacast.com
<flyrot= ary@lancaironline.net> wrote:
>
> Todd, just catching up on the blog after a week of vacation ... my mai= n thought is that doubling your Surface AREA will have far more positive af= fect than the negative effects of halving your CUBIC area ... cubic inches = of radiator is misleading - surface area is far more important.
> Jeff
>
> I'm considering making some changes to my cooling system as it is = not adequate when flying low & slow, as on recent flights on a few hot = days. I'm still using a set of evap cores as they fit the limited space= on either side of the PSRU in an RV cowl.
>=C2=A0 =C2=A0Bill Jepson made mention of a curved radiator earlier this= summer, which has been simmering on a hot spot way back in my brain ever s= ince. I've spent the last few days looking real hard at the idea.
> The size and shape of the curve looks like it would conform quite nice= ly to the bottom of the RV cowl. so that the top of the rad would be perpen= dicular to the airflow while the bottom will curve away. This would require= a new ducts to be glassed to take advantage of this, but that would allow = for more time and room to slow down the airflow for greater efficiency. It = would also almost double the square inches of cooling area than I currently= have, however as it is thinner it would provide half of the cubic inches o= f volume as I currently have.
>=C2=A0 The small thick rads I currently use were chosen more with high = speeds in mind (well, and of course ease of installation), but now I'm = thinking that I'd rather have a thinner rad that would perform better o= n the ground and in slow flight. These curved rads seem like they could off= er some advantages.
>=C2=A0 =C2=A0I've just found them listed on Amazon.ca for $148CAD with free shipping (x2)wh= ich seems pretty reasonable, so for $300, it might offer a significant cool= ing upgrade.... or maybe not.
> I wish I could find an old one to cut open to inspect, test weld, chec= k for fit, etc.
>
> Does anybody have any thoughts on the idea? I'm on the edge so it = wouldn't take much to push me over, or pull me back....
>
> --
> 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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