Today's Message Index:
----------------------
1. 05:11 AM - Re: radiator cooling (gary)
2. 05:11 AM - Re: radiator cooling (gary)
3. 05:54 AM - Re: radiator cooling (Larry McFarland)
4. 06:37 PM - Re: CH601 Radiator Location (Phil Raker)
Message 1
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| Subject: | Re: radiator cooling |
--> Stratus-List message posted by: "gary" <FlyinK@Efortress.com>
maybe a different rad mounted vertically? it might get more air thru it but
maybe not.
gary
----- Original Message -----
From: "Larry McFarland" <larrymc@qconline.com>
Subject: Stratus-List: radiator cooling
> --> Stratus-List message posted by: "Larry McFarland"
<larrymc@qconline.com>
>
> Hi guys,
> Well, there's little discussion of radiator postion
> and its affect on cooling lately, so here's an update. I do have to
> acknowlege those who have commented to this, because most of you were
right.
>
> My standard vw rabbit radiator positioned 38" aft gets lots of air
> during hi-speed taxiing and some while surfing the ground cushion, but
> not enough during climbout. Someone mentioned that radiators mounted at
mid to
> mid-rear wing positions, the pressure is nearly equal front and rear of
the radiator
> and I believe they were exactly right.
>
> I believe the prop blast has less influence when in climb because there
just isn't enough
> low pressure at the rear of the radiator that far back. I cannot climb any
distance without
> seeing the temp gage peak out. The radiator might cool well if it were
located further back
> near the trail edge of the wing, but I've made my mount-angles only long
enough to position
> the radiator a little more rearward or anywhere in between that and the
firewall.
>
> So today, I'm going to drain coolant and reposition my radiator forward so
that my
> intake is much closer to the standard positive air from the prop and
places the louvers in the
> only low pressure available from air going around the radiator. I'm going
to continue the use of the
> intake and louvers because I still believe they improve airflow, but that
remains to be proven as well.
>
> Fortunately, it's a simple job that only requires the repositon and new
length hose connectors
> so we'll soon find out the difference.
>
> Larry McFarland - 601HDS Stratus Ram Heads
>
>
Message 2
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| Subject: | Re: radiator cooling |
--> Stratus-List message posted by: "gary" <FlyinK@Efortress.com>
glad it's an easy job, i cringed when you said you had to move it. i know
you put a lot of work into that, it came out great. maybe exhaust augmented
output to draw air thru? that would be tought to do though. good luck, let
us know how it goes.
gary
----- Original Message -----
From: "Larry McFarland" <larrymc@qconline.com>
Subject: Stratus-List: radiator cooling
> --> Stratus-List message posted by: "Larry McFarland"
<larrymc@qconline.com>
>
> Hi guys,
> Well, there's little discussion of radiator postion
> and its affect on cooling lately, so here's an update. I do have to
> acknowlege those who have commented to this, because most of you were
right.
>
> My standard vw rabbit radiator positioned 38" aft gets lots of air
> during hi-speed taxiing and some while surfing the ground cushion, but
> not enough during climbout. Someone mentioned that radiators mounted at
mid to
> mid-rear wing positions, the pressure is nearly equal front and rear of
the radiator
> and I believe they were exactly right.
>
> I believe the prop blast has less influence when in climb because there
just isn't enough
> low pressure at the rear of the radiator that far back. I cannot climb any
distance without
> seeing the temp gage peak out. The radiator might cool well if it were
located further back
> near the trail edge of the wing, but I've made my mount-angles only long
enough to position
> the radiator a little more rearward or anywhere in between that and the
firewall.
>
> So today, I'm going to drain coolant and reposition my radiator forward so
that my
> intake is much closer to the standard positive air from the prop and
places the louvers in the
> only low pressure available from air going around the radiator. I'm going
to continue the use of the
> intake and louvers because I still believe they improve airflow, but that
remains to be proven as well.
>
> Fortunately, it's a simple job that only requires the repositon and new
length hose connectors
> so we'll soon find out the difference.
>
> Larry McFarland - 601HDS Stratus Ram Heads
>
>
Message 3
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| Subject: | Re: radiator cooling |
--> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Gary,
The NSI radiator, on a 601 is a double row, double deep, wider design
that permits air-flow to go straight thru easily. There is one in Florida
that
has the radiator positioned mid wing on the belly and it works well.
I contemplated using the design, but wanted to first try out the intake and
louvers for cooling on the standard Rabbit design. I may move my radiator
further back later to prove/disprove the position issue.
I do intend to fly this with and without the special intake to get "mother
natures"
opinion on this and then will fly another earlier "scoop" design that I did
to get
a feel for what it does.
Larry
Subject: Re: Stratus-List: radiator cooling
> --> Stratus-List message posted by: "gary" <FlyinK@Efortress.com>
>
> maybe a different rad mounted vertically? it might get more air thru it
but
> maybe not.
>
> gary
>
> > --> Stratus-List message posted by: "Larry McFarland"
>
> So today, I'm going to reposition my radiator forward
Fortunately, it's a simple job that only requires the repositon and new
length hose connectors so we'll soon find out the difference.
> >
> > Larry McFarland - 601HDS Stratus Ram Heads
Message 4
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| Subject: | Re: CH601 Radiator Location |
--> Stratus-List message posted by: Phil Raker <phadr1@yahoo.com>
>
> --> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
>
> My standard vw rabbit radiator positioned 38" aft gets lots of air
> during hi-speed taxiing and some while surfing the ground cushion, but
> not enough during climbout. Someone mentioned that radiators mounted at mid
> to
> mid-rear wing positions, the pressure is nearly equal front and rear of the
> radiator
Larry,
Does that mean the lowest point of your radiator (leading edge of "top"
header) is 38" behind the bottom of your firewall? How far back would be
"trailing edge"? Leading edge of the rad at trailing edge of the wing?
Trailing edge of rad at trailing edge of the wing? Somewhere in between?
Phil Raker N556P HDS/Stratus ~85% completed
Cooling plumbed but not yet filled.
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