Received-SPF: pass
 receiver=logan.com; client-ip=205.152.59.66; envelope-from=atlasyts@bellsouth.net
Mime-Version: 1.0 (Apple Message framework v752.2)
In-Reply-To: <list-1314358@logan.com>
References: <list-1314358@logan.com>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
Message-Id: <EA625790-D54B-40DC-AAD0-BE9EF01F4E54@bellsouth.net>
Content-Transfer-Encoding: 7bit
From: Bulent Aliev <atlasyts@bellsouth.net>
Subject: Re: [FlyRotary] More cooling Tests
Date: Mon, 24 Jul 2006 20:58:47 -0400
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Hi Bob, the stuff you are using I think it is Mylar coated  
fiberglass. If it is close to the exhaust pipes, it may melt the  
coating? Friend of mine bought some from Spruce. I put the propane  
torch on it and the coating melted instantly.
Bulent "Buly" Aliev
FXE Ft lauderdale, FL
http://tinyurl.com/s5xw8


On Jul 24, 2006, at 8:38 PM, Bob White wrote:

> I finished putting a layer of insulation around the exhaust system.  I
> placed thermocouples in a few key locations.  One inside the
> insulation, one outside, and one on the fuel rail.  OAT was 80-85F.
>
> I ran the engine at 2200 rpm until the temps stabilized at 197 oil and
> water.  I increased rpm's to 3100 and temps went up to 200 oil and 207
> water. They were still increasing very slowly.  I can taxi at 3100 rpm
> or less and getting a little movement should help cooling.  Also, when
> I reduced power back to 2200 rpm, the temps started decreasing.  So  
> on a
> not too hot day I think the cooling will be OK for taxiing.
>
> The insulation is a layer of reflective insulation I bough at the  
> speed
> shop that is good to 1000F.  It has a metalized layer on each side and
> some kind of fibrous layer on the inside.  (The stuff itches like
> fiberglass when you get it on you.)  At the end of the test, the
> thermocouple on the inside layer was reading 235F and the one in the
> same place on the outside of the insulation was 167F.
>
> I still don't have the fuel return to the tank.  It's going directly
> back to the fuel pump input.  So the fuel rail temps were getting
> pretty high.  The fuel rail was 145F and the engine was starting to  
> run
> a little rough, presumably due to incipient vapor lock.
>
> Next step is to open the tank and install the fuel return line.  I ran
> the line from the firewall to the wing root this afternoon, so the  
> easy
> part is done.
>
> Bob W.
>
> -- 
> http://www.bob-white.com
> N93BD - Rotary Powered BD-4 (first engine start 1/7/06)
> Custom Cables for your rotary installation -
> http://www.roblinphoto.com/shop/
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/