X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-gy0-f180.google.com ([209.85.160.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4466101 for flyrotary@lancaironline.net; Tue, 14 Sep 2010 08:08:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.160.180; envelope-from=msteitle@gmail.com Received: by gyg13 with SMTP id 13so145384gyg.25 for ; Tue, 14 Sep 2010 05:07:29 -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=yO1hZXa5D9v0Q4JmIsavfWqFC5JsP9ozKr4uTGzqqTc=; b=BaLU/00xtuZNwEBHEPhuocGgBbH6yzt3UthaRrDC4g5Q9njVMfjSJdN8vs/pte/A5m R1aHMGMQMLn/hVo4Vv0RHZGGiaLeWd6A2u7le3SRB07RhuKH9THuoSZ8qUljw39OzfU4 ZwgMazKa1lFdXQYt2YC+3KLYFqKm6jW4w+gXo= 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=qYY3CsFHeaRDqU4oRWdnXMtUcDnTF+4y/Z/auMIf+wrm3WC5L22bqZ7QqyEqDXQQ7s LXfSesBkiMm+1uQJqC6xRjs/O+/gh4DeThF8Rezrgz1H1XrABmzExY/4tgM+tispQuMa gHUEGtKk9e/dvUVVbQUIpQFo5ygq4tZ6OToGw= MIME-Version: 1.0 Received: by 10.150.59.19 with SMTP id h19mr1364971yba.389.1284466049468; Tue, 14 Sep 2010 05:07:29 -0700 (PDT) Received: by 10.231.184.7 with HTTP; Tue, 14 Sep 2010 05:07:28 -0700 (PDT) In-Reply-To: References: Date: Tue, 14 Sep 2010 07:07:28 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Scheduled hose replacement From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=000e0cd6e8309accec0490370e7e --000e0cd6e8309accec0490370e7e Content-Type: text/plain; charset=ISO-8859-1 On Tue, Sep 14, 2010 at 12:38 AM, David Leonard wrote: > > > 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 > That's the big plus in using Wiggins style couplings with aluminum tube. It is very easy to change out the o-rings. However, I still have braided SS fuel hoses to worry about. Mark S. --000e0cd6e8309accec0490370e7e Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable

On Tue, Sep 14, 2010 at 12:38 AM, David Leonard = <wdleonard@gmai= l.com> wrote:


On Mon, Sep 13, 2010 at 4:36 PM, Tracy <= tracy@rotaryaviation.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.ne= t
http://Rota= ryRoster.net


That's the big plus in using Wiggins style couplings with alumin= um tube.=A0 It is very easy to change out the o-rings.=A0 However, I still = have braided SS fuel hoses to worry about.

Mark S.
--000e0cd6e8309accec0490370e7e--