<html><body>
<DIV>I guess it's true, great minds think alike! :) Anybody know if it works?</DIV>
<DIV> </DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message -------------- <BR>From: Chad Northeast <chad@f3acanada.org> <BR><BR>> Jeff, <BR>> <BR>> Its been done :) <BR>> <BR>> http://www.plettenberg-motoren.com/german/zuxtra.htm <BR>> <BR>> Chad <BR>> <BR>> jeffghughes@comcast.net wrote: <BR>> <BR>> > Matt, <BR>> > Your missing my point. I have never doubted that a "properly" designed <BR>> > duct can increase cooling. I just doubt that most modelers have <BR>> > "properly" designed duct work in their planes. The ducts we make <BR>> > increase cooling over not having any duct work, but I've built and <BR>> > flown a lot of planes with engines and motors un-cowled that didn't <BR>> > overheat either! My initial statement was around uncowled outrunner <BR>> > motors. Why not have them up front and exposed? Save a lot of grief <BR>> > and might just look good (or not, it just might look industrial). We <BR>> > as pattern folks always seem to do the harder right, instead of the <BR>> > easier right. <BR>> > <BR>> > Jeff <BR>> > <BR>> > <BR>> > <BR>> > -------------- Original message -------------- <BR>> > From: rcmaster199@aol.com <BR>> > Jeff, how do you increase air velocity around the motor with no <BR>> > increase in model airspeed? <BR>> > Here's where our old friend Bernoulli comes in, stage left. <BR>> > <BR>> > And BTW, the properly designed ENTRY into and EXIT from the <BR>> > ducting really increases the ducting efficiency. <BR>> > <BR>> > Cheers, <BR>> > Matt <BR>> > <BR>> > -----Original Message----- <BR>> > From: jeffghughes@comcast.net <BR>> > To: NSRCA Mailing List <NSRCA-DISCUSSION@LISTS.NSRCA.ORG>; NSRCA <BR>> > Mailing List <NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>> > Sent: Tue, 28 Mar 2006 22:10:39 +0000 <BR>&
gt; > Subject: Re: [NSRCA-discussion] Reducing the odds... <BR>> > <BR>> > While I agree good ducting can be better than hanging out there, I <BR>> > seriously doubt if most modelers do any better than hanging it <BR>> > out. Plus I think an outrunner all polished up woul look pretty <BR>> > cool with the fuse faired into it. <BR>> > <BR>> > <BR>> > -------------- Original message -------------- <BR>> > From: "Dean Pappas" <D.PAPPAS@KODEOS.COM><BR>> > Good ducting is better than hanging in the breeze, and a whole <BR>> > lot prettier. <BR>> > <BR>> > Dean Pappas <BR>> > Sr. Design Engineer <BR>> > Kodeos Communications <BR>> > 111 Corporate Blvd. <BR>> > South Plainfield, N.J. 07080 <BR>> > (908) 222-7817 phone <BR>> > (908) 222-2392 fax <BR>> > d.pappas@kodeos.com <BR>> > <BR>> > -----Original Message----- <BR>> > *From:* nsrca-discussion-bounces@lists.nsrca.org <BR>> > [mailto:nsrca-discussion-bounces@lists.nsrca.org]*On <BR>> > Behalf Of *jeffghughes@comcast.net <BR>> > *Sent:* Tuesday, March 28, 2006 12:49 PM <BR>> > *To:* NSRCA Mailing List; NSRCA Mailing List <BR>> > *Subject:* Re: [NSRCA-discussion] Reducing the odds... <BR>> > <BR>> > I was thinking about this the other day. Why don't we <BR>> > change the fuse design to stick the motor out in the <BR>> > breeze? Kind of like a WWI rotary or a foamy. Seems like <BR>> > we're trying hard to keep the planes identical in design <BR>> > between electrics and fuel for no apparent reasons <BR>> > <BR>> > Also now that huge props and braking are available, will <BR>> > fuselages slim down some? <BR>> > <BR>> > <BR>> > -------------- Original message -------------- <BR>> > From: "Dean Pappas" <D.PAPPAS@KODEOS.COM><BR>> > <BR>> > > Hi Earl, <BR>> > > This sounds a whole lot loke the similar duct
I have <BR>> > placed around my AXI <BR>> > > outrunner. <BR>> > > It is astounding how much a difference a real <BR>> > cooling duct makes. <BR>> > > Fans inside the motor are a band-aid. The top-down <BR>> > solution is good airflow <BR>> > > management. <BR>> > > <BR>> > > The picture is of the ductwork in the Funtana I am <BR>> > doing for FM. <BR>> > > The subject is modifying the plane for <BR>> > high-performance electric. (high heat and <BR>> > > RF generation) <BR>> > > The airbox in the front of the cowl encloses the <BR>> > front of the motor, <BR>> > > and feeds the internals and the 1/8" gap in the duct <BR>> > with high pressure air. <BR>> > > <BR>> > > <BR>> > > later, <BR>> > > Dean <BR>> > > <BR>> > > Dean Pappas <BR>> > > <BR>> > <BR>> > Attached Message <BR>> > From: Dean Pappas <D.PAPPAS@KODEOS.COM><BR>> > To: NSRCA Mailing List <NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>> > Subject: Re: [NSRCA-discussion] Reducing the odds... <BR>> > Date: Tue, 28 Mar 2006 18:19:00 +0000 <BR>> > <BR>> >_______________________________________________ <BR>> >NSRCA-discussion mailing list <BR>> >NSRCA-discussion@lists.nsrca.org <mailto:NSRCA-discussion%40lists.nsrca.org><BR>> >http://lists.nsrca.org/mailman/listinfo/nsrca-discussion <BR>> > <BR>> > <BR>> >_______________________________________________ <BR>> >NSRCA-discussion mailing list <BR>> >NSRCA-discussion@lists.nsrca.org <mailto:NSRCA-discussion%40lists.nsrca.org><BR>> >http://lists.nsrca.org/mailman/listinfo/nsrca-discussion <BR>> > <BR>> > <BR>> > ------------------------------------------------------------------------ <BR>> > <BR>> > Subject: <BR>> > Re: [NSRCA-discussion] Reducing the odds... <BR>> > From: <BR>> > r
cmaster199@aol.com <BR>> > Date: <BR>> > Wed, 29 Mar 2006 01:14:17 +0000 <BR>> > To: <BR>> > nsrca-discussion@lists.nsrca.org <BR>> > <BR>> > To: <BR>> > nsrca-discussion@lists.nsrca.org <BR>> > <BR>> > <BR>> >_______________________________________________ <BR>> >NSRCA-discussion mailing list <BR>> >NSRCA-discussion@lists.nsrca.org <BR>> >http://lists.nsrca.org/mailman/listinfo/nsrca-discussion <BR>> > <BR>> >------------------------------------------------------------------------ <BR>> > <BR>> >_______________________________________________ <BR>> >NSRCA-discussion mailing list <BR>> >NSRCA-discussion@lists.nsrca.org <BR>> >http://lists.nsrca.org/mailman/listinfo/nsrca-discussion <BR>> > <BR>> _______________________________________________ <BR>> NSRCA-discussion mailing list <BR>> NSRCA-discussion@lists.nsrca.org <BR>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion </BLOCKQUOTE></mailto:NSRCA-discussion%40lists.nsrca.org></mailto:NSRCA-discussion%40lists.nsrca.org></body></html>