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Date: Fri, 25 Mar 2011 20:37:13 -0600
From: H & J Johnson <hjjohnson@sasktel.net>
Subject: Re: [FlyRotary] Re: intersting video
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Greg, I can't remember if I've asked this in the past, so forgive me if I have.  

How is the air from the boundry layer divider [diverter?] going to get out around the plumbing conduites [running back from the firewall]?  
From this last front shot, it looks like the 'conduites' are sorta 'fencing' in the air the would normally get diverted out the sides.

I'm sure I'm missing something [just the angle of the shot] but thought I'd ask.

She's going to be a speed demon!!

Jarrett Johnson


> One more shot with gear doors shut.
> Greg
> 
> ----- Original Message ----- 
> From: "Thomas Giddings" <tom@midwestaviation.net>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Friday, March 25, 2011 4:54 AM
> Subject: [FlyRotary] Re: intersting video
> 
> 
> Greg: I also thought about the P51 style scoop. I do think it is a 
> great 
> idea. I have a landing gear that retracts into the fuselage and 
> there really 
> is not much room for a belly scoop. Could you post some Pics of 
> how you did 
> this. How Big is the Radiator and scoop and where did you place 
> the oil 
> cooler. By the way if any of you are at Sun N Fun next week . 
> Please stop by 
> and say Hi. I will be in Building A booth 67 all week. I plan on 
> getting out 
> and looking at some flying examples if possible. and maybe  see 
> some of you 
> folks then.
> 
> Tom Giddings
> 
> On Mar 25, 2011, at 12:43 AM, Greg Ward wrote:
> 
> > Hey Tom;
> > We looked at this scenario when we were laying out our Legacy, 
> and 
> > determined that it was packing too much into a cowling that 
> already had a 
> > large intercooler, and a turbo that was guaranteed to be 
> radiating about 
> > 1400 to 1900 degrees of heat.  So, the question was, where to 
> put a 
> > radiator, oil cooler, etc. outside of the cowling?  We settled 
> on a P-51 
> > scoop for both, and built it exactly like the original, hoping 
> for a 
> > little thrust return.  Difference was, we kept the radiator out 
> of the 
> > fuselage, because we didn't want a leak in the cockpit at 20+K 
> feet, with 
> > all that entails.  We are also looking at installing a hot water 
> heating 
> > system, with valves both in and out for the very same reasons.  
> So, what 
> > we have left is, the engine, intercooler, turbo, and whatever 
> goes on the 
> > firewall, with a lot of air going through, to hopefully keep 
> everything 
> > happy.  The flaps on the scoop should enable us to keep temps 
> under 
> > control, a' la P-51, so we'll see.
> >
> > Greg Ward
> > Lancair Legacy N178RG, Still in progress
> >
> >
> > ----- Original Message ----- From: "Thomas Giddings" 
> > <tom@midwestaviation.net>
> > To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> > Sent: Thursday, March 24, 2011 8:59 PM
> > Subject: [FlyRotary] intersting video
> >
> >
> > Here is a youtube engine test run of an LS1 V8. Watch it long 
> enough to 
> > see how the dual radiators are plumbed. This system for engine 
> cooling 
> > includes two radiators which appear to be in series. It  seems 
> to be going 
> > from the thermostat housing to the top of the first radiator 
> then is taken 
> > out the bottom of the first one and crosses over to number two 
> at the top 
> > inlet and back out the bottom into the pump and back through the 
> block 
> > .They are both dual pass radiators . They feed this air from two 
> outside 
> > the cowl scoops. Bud Warren claims this cools very well. In fact 
> he claims 
> > it is the only way to cool the 300HP LS1 V8's . I wanted to 
> original 
> > install a LS3 into my Questair, but could quite get it stuffed 
> in there . 
> > http://www.youtube.com/watch?v=CUSbOAZRRtg. If this link does 
> not work 
> > search youtube for Franks Bearhawk Test run. Incidently they 
> claim they 
> > need 1256 Sq In of radiator surface to keep the V8 running at 
> 190 in 
> > cruise and 200 max in the climb. Also if you to geared drives 
> yahoo forum 
> > there is a very interesting read on the subject on cooling 
> requirements 
> > for the LS1.
> >
> > Tom Giddings
> > VP Avionics Sales
> > MIDWEST AVIONICS
> > 200 Hardy Roberts Dr
> > PO Box 219
> > West Paducah,KY 42086
> > 877-904 9966
> > Cell; 727 858-1772
> > FAX:270 744 3466
> > tom@midwestaviation.net
> > Online Store
> > www.midwest-avionics.com
> >
> > <Image00010.jpg><P1010273.jpg><Mail Attachment.txt>
> 
> 
> --
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