X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-iw0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4465880 for flyrotary@lancaironline.net; Tue, 14 Sep 2010 01:39:29 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=wdleonard@gmail.com Received: by iwn8 with SMTP id 8so6329899iwn.25 for ; Mon, 13 Sep 2010 22:38:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=6yUTAViiOYHoGH7bh4zRgekyBY1BDz2POtn33seIB6w=; b=lzRr3+K7F0BR8t+aJ4tDAXUN+fr81dh5oPM+a1m/xts7lfWIf3fcr/StEBTw5bIXlP iuKehkQZ5vCVYpuwssfdnY2QBwd1K/81fi0neMYOaxT0mn+udKO7gV02qTEOZAPYXTi2 X8KKk3AFsGRpjhWWkuvQAGOgKrfDhanMw19tA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=MNlb1lN4v8sBnrt1fj5dd8iKvlEgEAY9E5Kskvd5iPrpEMckvjwwnxpwc4Ymjkl5To URmnn/u9ArPqnYdneQ4llLz6xNRZRktlmCduUNLmlngf5AbY81p/c8Gbb+RNfxm141Pf HXQ10stDgqi27pz4T4nGemyswG3nRX2xwfuJA= MIME-Version: 1.0 Received: by 10.231.150.7 with SMTP id w7mr7405117ibv.14.1284442733326; Mon, 13 Sep 2010 22:38:53 -0700 (PDT) Received: by 10.231.171.68 with HTTP; Mon, 13 Sep 2010 22:38:53 -0700 (PDT) In-Reply-To: References: Date: Mon, 13 Sep 2010 22:38:53 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Scheduled hose replacement From: David Leonard To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00504501690adab0de049031a02b --00504501690adab0de049031a02b Content-Type: text/plain; charset=ISO-8859-1 On Mon, Sep 13, 2010 at 4:36 PM, Tracy wrote: > About the same for me. I have about 10 years on silicone heater hose. The > truckers use this stuff for a million miles before changing. > > Tracy > > > On Mon, Sep 13, 2010 at 4:40 PM, Charlie England wrote: > >> Yes, there is occasionally method to my madness. >> >> I figured Ed had you beat, but I'm pretty sure there's someone else with >> even more hours, if not calendar time, on high quality automotive hoses. >> >> Charlie >> >> On 9/13/2010 2:33 PM, Ed Anderson wrote: >> >>> 'Frad not Dave, >>> My SS radiator hoses (AN-16) have over 10 years on them - no replacement, >>> no leaks (so far). However, were I to do it again, I would probably not go >>> SS due to cost and weight - but reliability has been absolutely great. >>> Ed >>> Edward L. Anderson >>> Anderson Electronic Enterprises LLC >>> 305 Reefton Road >>> Weddington, NC 28104 >>> http://www.andersonee.com >>> http://www.eicommander.com >>> >>> *From:* David Leonard >>> *Sent:* Monday, September 13, 2010 3:19 PM >>> *To:* Rotary motors in aircraft >>> *Subject:* [FlyRotary] Re: Scheduled hose replacement >>> >>> >>> >>> On Mon, Sep 13, 2010 at 11:53 AM, Charlie England < >>> ceengland@bellsouth.net > wrote: >>> >>> On 9/13/2010 1:02 PM, David Leonard wrote: >>> >>> >>> >>> *The radiator manufacturer will have a maximum number based >>> on how >>> >>> stiff the flat sided tubes are. Too much pressure rounds those >>> tubes and then pulls them loose from the fins when pressure is >>> removed. Also the rounded tubes slow airflow through the >>> radiator. * >>> *Racing radiators tend to have higher pressure ratings than >>> auto >>> radiators. * >>> *Most racers run 16 to 22 pound caps. Higher pressure means >>> higher >>> boiling temp for the coolant. Also more stress on the >>> connections. With a 2" hose and 22 pounds you have just >>> about 70 >>> pounds trying to pull the hose off of the fitting. With >>> silicone >>> hose and safety wired clamps it would not be a factor. That >>> does >>> not include Chinese replica clamps. Just real American made >>> name >>> brand clamps. You can also use real aircraft quality clamps >>> already drilled for safety wire. * >>> *Many modern cars use no pressure cap. Just a sealing >>> filler cap >>> on a make up bottle.* >>> *An air space above the coolant level provides a volume of >>> air to >>> compress to control the pressure. If the moron at the gas >>> station >>> fills that bottle all the way up while reading the message >>> on the >>> bottle not to fill above this line,* >>> *the end tank will blow off of the radiator just like on my >>> wife's >>> car. * >>> ** >>> *The 22 pound cap is middle ground, a bit more insurance, not >>> likely to hurt the radiator. * >>> ** >>> *I use 22 pounds. Distilled water with 10% glycol and either >>> Redline Water Wetter or 1/2 teaspoon full of dish washing >>> detergent. It is gentle on the hands. Never a problem since >>> 1980.* >>> *Lynn E. Hanover* >>> >>> >>> Hey Lynn and the rest of you smart guys, What is your opinion >>> on scheduled hose replacement? My plane has been flying for 6 >>> years now and I just finished the annual. I decided that 6 >>> years was long enough on some of my radiator hose and decided >>> to replace it. In particular, I ordered up the AN-16 steel >>> braided hose (Earls Perform-o-flex) for my coolant out line >>> but I just couldn't bear the thought of cutting and fitting >>> that stuff and hoping I don't get leaks or damage the AN hose >>> fittings or cut my fingers to shreds. So I decided the >>> current hoses were good for another year. Maybe a >>> justification... >>> >>> Opinions on scheduled replacement of SS hose? >>> >>> -- David Leonard >>> >>> Turbo Rotary RV-6 N4VY >>> http://N4VY.RotaryRoster.net < >>> http://n4vy.rotaryroster.net/> >>> http://RotaryRoster.net < >>> http://rotaryroster.net/> >>> >>> I would copy the guy with the most trouble free hours on his >>> coolant hoses. :-) >>> >>> Charlie >>> >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: >>> http://mail.lancaironline.net:81/lists/flyrotary/List.html >>> >>> >>> >>> Nice Charlie, >>> >>> For braided SS in aircraft use, that might be me.. Guess I just keep >>> going until I land on another highway... ;-) >>> -- >>> David Leonard >>> >>> Turbo Rotary RV-6 N4VY >>> http://N4VY.RotaryRoster.net >>> http://RotaryRoster.net >>> >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: >> http://mail.lancaironline.net:81/lists/flyrotary/List.html >> > > Yea, I know thay CAN last a long time, but I remember as a kid spending the day stuck out in the desert because the radiator hose went out on our 6 year-old caddie. I knew Ed, Tracy, and stan at least have more time than me, but not sure on hose type. But I am also very glad to hear that the consensus is that I dont need to change out the hoses for at least another year or two. Thanks, -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net --00504501690adab0de049031a02b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable

On Mon, Sep 13, 2010 at 4:36 PM, Tracy <tracy@rotaryaviati= on.com> wrote:
About the same for me.=A0 I have= about 10 years on silicone heater hose.=A0 The truckers use this stuff for= a million miles before changing.

Tracy=20


On Mon, Sep 13, 2010 at 4:40 PM, Charlie England= <ceengland@bellsouth.net> wrote:
=A0Yes, there is occ= asionally method to my madness.

I figured Ed had you beat, but I'= ;m pretty sure there's someone else with even more hours, if not calend= ar time, on high quality automotive hoses.

Charlie

On 9/13/2010 2:33 PM, Ed Anderson wrote:
'Frad not Dave,<= br>My SS radiator hoses (AN-16) have over 10 years on them - no replacement= , no leaks (so far). =A0However, were I to do it again, I would probably no= t go SS due to cost and weight - but reliability has been absolutely great.=
Ed
Edward L. Anderson
Anderson Electronic Enterprises LLC
305 Reef= ton Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com

*From:* David Leonard <mailto:wdleonard@gmail.com>
*Sent:* Monday, September= 13, 2010 3:19 PM
*To:* Rotary motors in aircraft <mailto:flyrotary@lancaironli= ne.net>
*Subject:* [FlyRotary] Re: Scheduled hose replacement



On Mon= , Sep 13, 2010 at 11:53 AM, Charlie England <ceengland@bellsouth.net <mailto:ceengland@bellso= uth.net>> wrote:

=A0 =A0 On 9/13/2010 1:02 PM, David Leonard wrote:



=A0 = =A0 =A0 =A0 =A0 *The radiator manufacturer will have a maximum number based=
=A0 =A0 =A0 =A0on how

=A0 =A0 =A0 =A0 =A0 stiff the flat sided t= ubes are. Too much pressure rounds those
=A0 =A0 =A0 =A0 =A0 tubes and then pulls them loose from the fins when pres= sure is
=A0 =A0 =A0 =A0 =A0 removed. Also the rounded tubes slow airflow= through the
=A0 =A0 =A0 =A0radiator. *
=A0 =A0 =A0 =A0 =A0 *Racing r= adiators tend to have higher pressure ratings than
=A0 =A0 =A0 =A0auto
=A0 =A0 =A0 =A0 =A0 radiators. *
=A0 =A0 =A0 =A0 = =A0 *Most racers run 16 to 22 pound caps. Higher pressure means
=A0 =A0 = =A0 =A0higher
=A0 =A0 =A0 =A0 =A0 boiling temp for the coolant. =A0Also = more stress on the
=A0 =A0 =A0 =A0 =A0 connections. With a 2" hose = and 22 pounds you have just
=A0 =A0 =A0 =A0about 70
=A0 =A0 =A0 =A0 =A0 pounds trying to pull the ho= se off of the fitting. With
=A0 =A0 =A0 =A0silicone
=A0 =A0 =A0 =A0 = =A0 hose and safety wired clamps it would not be a factor. That
=A0 =A0 = =A0 =A0does
=A0 =A0 =A0 =A0 =A0 not include Chinese replica clamps. Just= real American made
=A0 =A0 =A0 =A0name
=A0 =A0 =A0 =A0 =A0 brand clamps. You can also use r= eal aircraft quality clamps
=A0 =A0 =A0 =A0 =A0 already drilled for safe= ty wire. *
=A0 =A0 =A0 =A0 =A0 *Many modern cars use no pressure cap. Ju= st a sealing
=A0 =A0 =A0 =A0filler cap
=A0 =A0 =A0 =A0 =A0 on a make up bottle.*
=A0 =A0 =A0 =A0 =A0 *An air sp= ace above the coolant level provides a volume of
=A0 =A0 =A0 =A0air to=A0 =A0 =A0 =A0 =A0 compress to control the pressure. If the moron at the= gas
=A0 =A0 =A0 =A0station
=A0 =A0 =A0 =A0 =A0 fills that bottle all= the way up while reading the message
=A0 =A0 =A0 =A0on the
=A0 =A0 =A0 =A0 =A0 bottle not to fill above this = line,*
=A0 =A0 =A0 =A0 =A0 *the end tank will blow off of the radiator j= ust like on my
=A0 =A0 =A0 =A0wife's
=A0 =A0 =A0 =A0 =A0 car. *=A0 =A0 =A0 =A0 =A0 **
=A0 =A0 =A0 =A0 =A0 *The 22 pound cap is middle= ground, a bit more insurance, not
=A0 =A0 =A0 =A0 =A0 likely to hurt the radiator. *
=A0 =A0 =A0 =A0 =A0 *= *
=A0 =A0 =A0 =A0 =A0 *I use 22 pounds. Distilled water with 10% glycol = and either
=A0 =A0 =A0 =A0 =A0 Redline Water Wetter or 1/2 teaspoon full= of dish washing
=A0 =A0 =A0 =A0 =A0 detergent. It is gentle on the hand= s. Never a problem since
=A0 =A0 =A0 =A01980.*
=A0 =A0 =A0 =A0 =A0 *Lynn E. Hanover*


= =A0 =A0 =A0 =A0Hey Lynn and the rest of you smart guys, What is your opinio= n
=A0 =A0 =A0 =A0on scheduled hose replacement? =A0My plane has been fly= ing for 6
=A0 =A0 =A0 =A0years now and I just finished the annual. =A0I = decided that 6
=A0 =A0 =A0 =A0years was long enough on some of my radiator hose and decide= d
=A0 =A0 =A0 =A0to replace it. =A0In particular, I ordered up the AN-16= steel
=A0 =A0 =A0 =A0braided hose (Earls Perform-o-flex) =A0for my cool= ant out line
=A0 =A0 =A0 =A0but I just couldn't bear the thought of = cutting and fitting
=A0 =A0 =A0 =A0that stuff and hoping I don't get leaks or damage the AN= hose
=A0 =A0 =A0 =A0fittings or cut my fingers to shreds. =A0So I decid= ed the
=A0 =A0 =A0 =A0current hoses were good for another year. =A0Maybe= a
=A0 =A0 =A0 =A0justification...

=A0 =A0 =A0 =A0Opinions on scheduled replacement of SS hose?

=A0= =A0 =A0 =A0-- =A0 =A0 =A0 =A0 David Leonard

=A0 =A0 =A0 =A0Turbo Ro= tary RV-6 N4VY
=A0 =A0 =A0 =A0http://N4VY.RotaryRoster.net <http://n4vy.rotaryroster.net/&g= t;
=A0 =A0 =A0 =A0http:= //RotaryRoster.net <http://rotaryroster.net/>

=A0 =A0I would copy the guy = with the most trouble free hours on his
=A0 =A0coolant hoses. :-)

=A0 =A0Charlie

=A0 =A0--
=A0 =A0= Homepage: http://ww= w.flyrotary.com/
=A0 =A0Archive and UnSub:
=A0 =A0h= ttp://mail.lancaironline.net:81/lists/flyrotary/List.html



Nice Charlie,

For braided SS in aircraft use, that might= be me.. =A0Guess I just keep going until I land on another highway... =A0;= -)
--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.= net


--
Homepage: =A0http://www.flyrotary.com/
Archive an= d UnSub: =A0 http://mail.lancaironline.net:81/lists/flyrotary= /List.html



Yea, I know thay CAN last a long time, but I remem= ber as a kid spending the day stuck out in the desert because the radiator = hose went out on our 6 year-old caddie.=A0 I knew Ed, Tracy, and stan at le= ast have more time than me, but not sure on hose type.=A0 But I am also ver= y glad to hear that the consensus is that I dont need to change out the hos= es for at least another year or two.

=A0
Thanks,

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
--00504501690adab0de049031a02b--