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1. 11:13 AM - Re: Aeroquip hoses (Owen Baker)
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Subject: | Re: Aeroquip hoses |
3/30/2015
Hello Keith, You wrote: "Does anyone know which Service Bulletin
Continental covers their rubber
parts under ? ( OC ? )"
A search of the Continental pubs did not reveal anything. I talked to Jason
at Continental Technical Support.
He said that he knew of no Continental publication dealing with that subject
and that the flex hoses on the
engine should be replaced at TBO hours or 12 years. He just assumed the same
would apply to flex hoses
from the airframe to the engine. He did throw the words "on condition" into
the conversation a few times.
I say to put in the very best quality hoses that you can find and check
their condition whenever they are
exposed and during scheduled inspections.
OC
======================================
From: Keith.Miller@esa.int
Sent: Thursday, March 26, 2015 12:17 PM
Subject: Re: KIS-List: Aeroquip hoses
Scott
since i have all aeroquip/ stratoflex, its simpler for me to replace just
the hose and use the original end fittings , As you said , they are
quick to make up ,
>From a google search , Rotax engines also states that their rubber hoses
need to be replaced at 5 years.
Does anyone know which Service Bulletin Continental covers their
rubber
parts under ? ( OC ? )
Keith
From: Scott <sstearns2@yahoo.com>
Subject: Re: KIS-List: Aeroquip hoses
Sent by: owner-kis-list-server@matronics.com
I would stay away from the neoprene hose. Another option is the Teflon
hoses that last a lot longer. That is what the airlines use now.
Scott
Sent from my iPad
> On Mar 26, 2015, at 8:23 AM, Keith.Miller@esa.int wrote:
>
>
> Scott,
>
> thanks for the info , probably like many I thought the aeroquip/
> stratoflex hoses were the safest and most reliable solution , but if
> they
> only last 5 years , its probably better to use the cheap neoprene and
> replace at the same interval. I will do a major inspection of all my
> hoses
> ASAP, as i am clearly on borrowed time .
>
> Keith
>
>
> From: Scott <sstearns2@yahoo.com>
> To: "kis-list@matronics.com" <kis-list@matronics.com>,
> Date: 03/25/2015 07:27 PM
> Subject: Re: KIS-List: Aeroquip hoses
> Sent by: owner-kis-list-server@matronics.com
>
>
>
> According to the Q/A section on the ACS page 303 hoses should be replaced
> every 5 years. Seems pretty conservative. I have read other places 10
> years.
>
> They have a lot of distributors that should be able to make a new set of
> hoses based on the old ones. The end fittings are probably still good.
> They are not too hard to do yourself if you get the mandrel tool from ACS.
>
>
http://www.eaton.com/Eaton/ProductsServices/Hydraulics/HowtoBuy/AeroquipExpress/index.htm
>
>
> Scott
>
>
> Sent from my iPad
>
>> On Mar 25, 2015, at 7:53 AM, Keith.Miller@esa.int wrote:
>>
>>
>> Any one had an experience of these Aeroquip f hoses ( fuel and Oil type
>> 303, , 601 and Stratoflex hose) deteriorating over time ?
>>
>> Some of mine must be best part of 18 years old now- 13 years flying.
> They
>> all look good from the outside. or can some one point me to a
> specification
>> which defines the life of them in service .
>>
>> Thanks
>>
>> Keith
>>
>>
>>
>> From: Scott <sstearns2@yahoo.com>
>> To: "kis-list@matronics.com" <kis-list@matronics.com>,
>> Date: 03/24/2015 11:44 PM
>> Subject: Re: KIS-List: Re: NEOPRENE HOSE
>> Sent by: owner-kis-list-server@matronics.com
>>
>>
>>
>> Fuel system problems are about 25% of the mechanical failures leading to
>> accidents in homebuilts. I would switch to real aircraft hoses (like
>> aeroquip 303) and hardware for any aircraft system. It is not hard to
> make
>> up the hoses yourself if you get the mandrel tool.
>>
>> Scott
>>
>> Sent from my iPad
>>
>> On Mar 24, 2015, at 3:24 PM, Galin Hernandez <galinhdz@gmail.com> wrote:
>>
>> My TR-4 has the neoprene hose from the wing to the fuselage as per
>> the
>> plans. One of them started leaking (old age cracking) after 9 years
>> of
>> use. The hose is very inexpensive so I now have it in my "scheduled
>> maintenance" to replace the hose very 5years.
>>
>> On Mon, Mar 23, 2015 at 9:13 AM, mark_trickel <marktrickel@gmail.com>
>> wrote:
> <marktrickel@gmail.com
>>
>> The 3/8 I.D. Neoprene hose included in KIS kits was intended for
>> the
>> fuel line connection between the fuel tanks, and the fuselage. The
>> manual is a little vague, but there is a drawing of a typical
>> aircraft fuel system included in the TR-1 Builders Manual (Airframe
>> Assembly section page 8 ). I did not check, but I am sure the same
>> drawing is in the TR-4 Builders Manual. The drawing comes from our
>> faster, sleeker, and much more difficult to build cousin, the
> Lancair
>> 235/320.
>>
>> The black rubber hose is a very important piece to the KIS
>> aircraft.
>> I can think of 2 real important reasons for this hose. First it
> makes
>> hooking up the fuel tanks simple. It would be a lot harder to
>> install a metal piece of tubing in this tight spot. Second when a
>> wing panel breaks off in a crash, the neoprene fuel line would
>> separate very easily - you wont have to worry about the fuel line
>> whiplashing about the cockpit (hopefully you all have plenty of
> Adell
>> clamps or the like securing the fuel line inside the cockpit).
>>
>> Vinyl tubing was also included in KIS kits for use in the pitot
>> static system. Some items included in the kits in fact have a shelf
>> life, and that includes the neoprene, and vinyl tubing (tires,
> unused
>> resin and adhesives). KIS kits are now reaching the 25 year old
> mark,
>> and owners that have KIS aircraft built with these original
> materials
>> need to seriously think about replacing or upgrading them if they
>> have not done so already. The vinyl tubing in my 23 year old is
> still
>> somewhat serviceable, but I am upgrading to Nyloseal tubing, and
>> fittings - those will last a few lifetimes.
>>
>> Some builders did not follow the Builders Manual, its just the
>> nature of homebuilt airplanes. Some installed that black rubber
>> hose
>> from the fuel tanks all the way through the cockpit to the firewall
>> (a very bad idea). My TR-1 had that black hose from the tanks
> through
>> the side of the fuselage, then slid onto the aluminum tubing (no
>> barb) held on by 2 hose clamps, running 45+ psi automotive fuel
> pumps
>> in each wing slosh tank. The return came from the firewall fitting
>> into vinyl tubing, to the fuel valve, back into vinyl tubing to the
>> tanks. That tubing is now petrified. Whats in your fuel system?
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=439763#439763
>>
>>
>>
>>
>>
>>
>>
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