Today's Message Index:
----------------------
1. 10:51 AM - Re: Oil Lines and Aluminum AN Fittings (mark donahue)
2. 03:40 PM - Re: Oil Lines and Aluminum AN Fittings (Lloyd Cudnohufsky)
3. 04:12 PM - Re: Oil Lines and Aluminum AN Fittings (Malcolm Brubaker)
4. 04:43 PM - Re: Oil Lines and Aluminum AN Fittings (John Evens)
5. 05:30 PM - Re: Oil Lines and Aluminum AN Fittings (Lowell)
6. 07:08 PM - Re: Oil Lines and Aluminum AN Fittings (Michael Kraus)
Message 1
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| Subject: | Oil Lines and Aluminum AN Fittings |
Guy,
I thought a little more about this. I remember reading articles in
Kitplanes on LO coolers, and that the cooler manufacturer recommended steel
fittings to the cooler as alumuminum fitting to the alum cooler would tend
to gall the threads, causing an issue if the cooler needs to be repaired.
They said removing the aluminum fitting from the cooler would probably
damage the cooler. I am builing an RV 9a and purchased the firewall forward
parts from Vans. In the kit the lube oil hoses have AN 818 fittings that
are steel or stainless steel (slightly magnetic) on the ends that goes to an
AN 822 fitting that screws into the cooler. In this case Vans supplied an
aluminum AN 822 fittings.
I used proper dope when assembling so I presume I could get the alum fitting
out of the cooler without damage should the need arise in the future, but
who knows.
It is not that big of a deal to use the steel AN fitting in leu of the
aluminum, but I don't know of any reason other than the above to do it.
Hope this helps.
Mark Donahue
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Lowell
Sent: Thursday, March 27, 2014 9:30 PM
Subject: Re: Kitfox-List: Oil Lines and Aluminum AN Fittings
I am curious where the advice came from. It is the first time I have heard
this after almost 20 years on various lists and forums. To your specific
question - 912 UL 900 hours. I wonder about the wisdom and more
specifically the reason for using steel fittings on an aluminum engine
block.
Lowell
Model IV-1200
912 UL
On 3/27/2014 7:24 PM, Guy Buchanan wrote:
>
> Anybody using aluminum AN fittings on their oil lines on a 912? With
> an oil cooler? For approximately how many hours? I've been told I must
> convert to steel for all the oil line end fittings. Tough to do with
> AN fittings and decent routing.
>
> Next: Anybody using AN non-banjo fittings to attach fuel lines to the
> carbs? I found an 8mm male to -3 AN male steel adapter, but have 1/4"
> fuel lines so need to convert to -4. I can only find -3 AN to -4 AN
> converters in aluminum.
>
> Guy Buchanan
> Ramona, CA
> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded Now a glider
> pilot, too.
>
>
Message 2
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| Subject: | Oil Lines and Aluminum AN Fittings |
Would brass be an option?
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of mark donahue
Sent: Friday, March 28, 2014 12:35 PM
Subject: RE: Kitfox-List: Oil Lines and Aluminum AN Fittings
--> <marktdonahue@comcast.net>
Guy,
I thought a little more about this. I remember reading articles in
Kitplanes on LO coolers, and that the cooler manufacturer recommended steel
fittings to the cooler as alumuminum fitting to the alum cooler would tend
to gall the threads, causing an issue if the cooler needs to be repaired.
They said removing the aluminum fitting from the cooler would probably
damage the cooler. I am builing an RV 9a and purchased the firewall forward
parts from Vans. In the kit the lube oil hoses have AN 818 fittings that
are steel or stainless steel (slightly magnetic) on the ends that goes to an
AN 822 fitting that screws into the cooler. In this case Vans supplied an
aluminum AN 822 fittings.
I used proper dope when assembling so I presume I could get the alum fitting
out of the cooler without damage should the need arise in the future, but
who knows.
It is not that big of a deal to use the steel AN fitting in leu of the
aluminum, but I don't know of any reason other than the above to do it.
Hope this helps.
Mark Donahue
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Lowell
Sent: Thursday, March 27, 2014 9:30 PM
Subject: Re: Kitfox-List: Oil Lines and Aluminum AN Fittings
I am curious where the advice came from. It is the first time I have heard
this after almost 20 years on various lists and forums. To your specific
question - 912 UL 900 hours. I wonder about the wisdom and more
specifically the reason for using steel fittings on an aluminum engine
block.
Lowell
Model IV-1200
912 UL
On 3/27/2014 7:24 PM, Guy Buchanan wrote:
>
> Anybody using aluminum AN fittings on their oil lines on a 912? With
> an oil cooler? For approximately how many hours? I've been told I must
> convert to steel for all the oil line end fittings. Tough to do with
> AN fittings and decent routing.
>
> Next: Anybody using AN non-banjo fittings to attach fuel lines to the
> carbs? I found an 8mm male to -3 AN male steel adapter, but have 1/4"
> fuel lines so need to convert to -4. I can only find -3 AN to -4 AN
> converters in aluminum.
>
> Guy Buchanan
> Ramona, CA
> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded Now a glider
> pilot, too.
>
>
Message 3
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| Subject: | Re: Oil Lines and Aluminum AN Fittings |
i need a aftermarket starter for my rotax 582- i herd napa has one anyone
have the Part #- please.- mal=0A=0A=0AMalcolm & Jeanne Brubaker =0AMic
higan Sport Pilot Repair =0Ahttp://michigansportpilotrepair.com/ =0ALSRM-A
, PPC, WS=0AGreat Sails - Sailmaker =0Afor Ultralight & Light Sport=0A(989)
513-3022 =0A- =0A=0A=0A=0A =0A=0A________________________________=0A From
: Lloyd Cudnohufsky <7suds@chartermi.net>=0ATo: kitfox-list@matronics.com
=0ASent: Friday, March 28, 2014 6:28 PM=0ASubject: RE: Kitfox-List: Oil Lin
loyd Cudnohufsky" <7suds@chartermi.net>=0A=0AWould brass be an option?=0A
=0A-----Original Message-----=0AFrom: owner-kitfox-list-server@matronics.co
m=0A[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of mark donah
ue=0ASent: Friday, March 28, 2014 12:35 PM=0ATo: kitfox-list@matronics.com
=0ASubject: RE: Kitfox-List: Oil Lines and Aluminum AN Fittings=0A=0A--> Ki
tfox-List message posted by: "mark donahue" =0A--> <marktdonahue@comcast.ne
t>=0A=0AGuy,=0AI thought a little more about this.- I remember reading ar
ticles in=0AKitplanes on LO coolers, and that the cooler manufacturer recom
mended steel=0Afittings to the cooler as alumuminum fitting to the alum coo
ler would tend=0Ato gall the threads, causing an issue if the cooler needs
to be repaired.=0AThey said removing the aluminum fitting from the cooler w
ould probably=0Adamage the cooler.- I am builing an RV 9a and purchased t
he firewall forward=0Aparts from Vans.- In the kit the lube oil hoses hav
e AN 818 fittings that=0Aare steel or stainless steel (slightly magnetic) o
n the ends that goes to an=0AAN 822 fitting that screws into the cooler.-
In this case Vans supplied an=0Aaluminum AN 822 fittings.=0AI used proper
dope when assembling so I presume I could get the alum fitting=0Aout of the
cooler without damage should the need arise in the future, but=0Awho knows
.- =0AIt is not that big of a deal to use the steel AN fitting in leu of
the=0Aaluminum, but I don't know of any reason other than the above to do i
t.=0AHope this helps.=0AMark Donahue=0A-----Original Message-----=0AFrom: o
wner-kitfox-list-server@matronics.com=0A[mailto:owner-kitfox-list-server@ma
tronics.com] On Behalf Of Lowell=0ASent: Thursday, March 27, 2014 9:30 PM
=0ATo: kitfox-list@matronics.com=0ASubject: Re: Kitfox-List: Oil Lines and
@sbcglobal.net>=0A=0AI am curious where the advice came from.- It is the
first time I have heard=0Athis after almost 20 years on various lists and f
orums. To your specific=0Aquestion - 912 UL 900 hours.- I wonder about th
e wisdom and more=0Aspecifically the reason for using steel fittings on an
aluminum engine=0Ablock.=0A=0ALowell=0AModel IV-1200=0A912 UL=0AOn 3/27/201
uchanan <gebuchanan@cox.net>=0A>=0A> Anybody using aluminum AN fittings on
their oil lines on a 912? With =0A> an oil cooler? For approximately how ma
ny hours? I've been told I must =0A> convert to steel for all the oil line
end fittings. Tough to do with =0A> AN fittings and decent routing.=0A>=0A>
Next: Anybody using AN non-banjo fittings to attach fuel lines to the =0A>
carbs? I found an 8mm male to -3 AN male steel adapter, but have 1/4"=0A>
fuel lines so need to convert to -4. I can only find -3 AN to -4 AN =0A> co
nverters in aluminum.=0A>=0A> Guy Buchanan=0A> Ramona, CA=0A> Kitfox IV-120
0 / 912-S / Warp 3cs / 500 hrs. and grounded Now a glider =0A> pilot, too.
=============
Message 4
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| Subject: | Re: Oil Lines and Aluminum AN Fittings |
I believe the practice of using steel fittings in these applications
comes directly from experience with Lycoming, Continental, & other
common aircraft engines, probably filtering down to other engine
types. The reason for using steel is because of the potential for an
aluminum fitting to crack/fail in these critical applications. I'll
grant you that it is probably rare, but there have been documented
cases of that happening. There doesn't seem to be a particular problem
with steel & an aluminum case. there are usually all kinds of steel
parts attached to & used on most engines by the manufacturer -
fittings & other hardware. The steel fittings should be aircraft
quality (AN or MS).
John Evens
Message 5
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| Subject: | Re: Oil Lines and Aluminum AN Fittings |
I find this discussion fascinating. I guess I will stick by my opinion
- not an A&P or engineer, just an inveterate tinkerer. I would think
that there might be a possible issue with coolant as it is potentially
corrosive, but oil or fuel" Maybe fuel due to the hydrophilic ethanol,
but I have aluminum AN Fittings there with aluminum nuts to secure the
flared tubing and did so in the 900 hour IV. Logic would tell me that
if aluminum to aluminum was an issue, the fitting would be aluminum and
the nut would be stainless, from the manufacturer. Both my oil cooler
and the heater core have large hex bosses on both. I always secure
these with a wrench before putting a wrench on the AN fitting. Again,
not an expert - just still wondering about the Whys.
Lowell
On 3/28/2014 3:28 PM, Lloyd Cudnohufsky wrote:
>
> Would brass be an option?
>
> -----Original Message-----
> From: owner-kitfox-list-server@matronics.com
> [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of mark donahue
> Sent: Friday, March 28, 2014 12:35 PM
> To: kitfox-list@matronics.com
> Subject: RE: Kitfox-List: Oil Lines and Aluminum AN Fittings
>
> --> <marktdonahue@comcast.net>
>
> Guy,
> I thought a little more about this. I remember reading articles in
> Kitplanes on LO coolers, and that the cooler manufacturer recommended steel
> fittings to the cooler as alumuminum fitting to the alum cooler would tend
> to gall the threads, causing an issue if the cooler needs to be repaired.
> They said removing the aluminum fitting from the cooler would probably
> damage the cooler. I am builing an RV 9a and purchased the firewall forward
> parts from Vans. In the kit the lube oil hoses have AN 818 fittings that
> are steel or stainless steel (slightly magnetic) on the ends that goes to an
> AN 822 fitting that screws into the cooler. In this case Vans supplied an
> aluminum AN 822 fittings.
> I used proper dope when assembling so I presume I could get the alum fitting
> out of the cooler without damage should the need arise in the future, but
> who knows.
> It is not that big of a deal to use the steel AN fitting in leu of the
> aluminum, but I don't know of any reason other than the above to do it.
> Hope this helps.
> Mark Donahue
> -----Original Message-----
> From: owner-kitfox-list-server@matronics.com
> [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Lowell
> Sent: Thursday, March 27, 2014 9:30 PM
> To: kitfox-list@matronics.com
> Subject: Re: Kitfox-List: Oil Lines and Aluminum AN Fittings
>
>
> I am curious where the advice came from. It is the first time I have heard
> this after almost 20 years on various lists and forums. To your specific
> question - 912 UL 900 hours. I wonder about the wisdom and more
> specifically the reason for using steel fittings on an aluminum engine
> block.
>
> Lowell
> Model IV-1200
> 912 UL
> On 3/27/2014 7:24 PM, Guy Buchanan wrote:
>>
>> Anybody using aluminum AN fittings on their oil lines on a 912? With
>> an oil cooler? For approximately how many hours? I've been told I must
>> convert to steel for all the oil line end fittings. Tough to do with
>> AN fittings and decent routing.
>>
>> Next: Anybody using AN non-banjo fittings to attach fuel lines to the
>> carbs? I found an 8mm male to -3 AN male steel adapter, but have 1/4"
>> fuel lines so need to convert to -4. I can only find -3 AN to -4 AN
>> converters in aluminum.
>>
>> Guy Buchanan
>> Ramona, CA
>> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded Now a glider
>> pilot, too.
>>
>>
>>
>>
>>
>>
>>
>
>
Message 6
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| Subject: | Re: Oil Lines and Aluminum AN Fittings |
Actually the issue is aluminum fittings on an aluminum oil cooler will gall a
nd bind together making the fittings impossible to remove. If you try, it s
trips the threads on the oil cooler. I lost a $200 oil cooler trying to re t
ighten the fittings.
Sent from my iPhone
> On Mar 28, 2014, at 7:32 PM, "John Evens" <jrevens@comcast.net> wrote:
>
> I believe the practice of using steel fittings in these applications comes
directly from experience with Lycoming, Continental, & other common aircraf
t engines, probably filtering down to other engine types. The reason for usi
ng steel is because of the potential for an aluminum fitting to crack/fail i
n these critical applications. I=99ll grant you that it is probably ra
re, but there have been documented cases of that happening. There doesn
=99t seem to be a particular problem with steel & an aluminum case t
here are usually all kinds of steel parts attached to & used on most engines
by the manufacturer =93 fittings & other hardware. The steel fittings
should be aircraft quality (AN or MS).
>
> John Evens
>
>
>
>
>
>
>
>
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
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