From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] cooling
Date: Fri, 27 Jul 2018 07:07:11 +0800
References: <list-11440097@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-11440097@logan.com>
Message-Id: <83F00436-73C8-4C8F-B611-1306E4D1912B@gmail.com>

Hi there Neil

Ha. Glad you found the Ign problem.
Looking forward to hearing how she flies now.

I=E2=80=99m still waiting on the new oil cooler so it is going to take =
another month to build a new diffuser and fit.

Steve Izett


> On 27 Jul 2018, at 5:57 am, Neil Unger 12348ung@gmail.com =
<flyrotary@lancaironline.net> wrote:
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> Steve and Chris,
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>                                   Finally got the fibreglass dry and =
fired up the revised cooling system and temp as follows Water 90 =
degrees, (on thermostat) Oil  80 degrees, and oil to reduction box 70 =
degrees ( from oil cooler).  To fill other in on how stupid I can be,  I =
had the original set up, that ran far too cool, so I also believed that =
I was getting massive cooling drag as my sportsman could only get 120 =
Kts instead of the usual 135 kts.  So I set about making up a very sexy =
cowling where the air from the radiator exhausted into the cowling.  =
This put the gap between the radiator and the sump of only 4 - 6 inches, =
 which worked well in that all it did was heat the oil in the sump =
marvelously!!  I was getting oil temps 20 degrees hotter than the water. =
 So after booting the cat many times in frustration, I finally realised =
that I had to exhaust the rads into the outside air as per the original. =
 Fibreglass in the middle of winter ????.
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> Final part of the jig saw was that when I removed the original set up =
to mount my new engine and cowling, I found that I had never bolted the =
positive lead to the back coil, and it has come off who knows when?  =
Result I was flying with the back rotor on the trailing plug only!!! =
Hence the slower speed which I thought was the cooling drag!
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> So basically I am now right back where I started as per cooling =
exhausting into the outside air,  A lot more experience that I did not =
need and confirmation that I am an idiot!
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> Neil Unger.
>=20
>=20
> --
> Homepage:  http://www.flyrotary.com/
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