| Re: [GMCnet] Tubing fabrication [message #91978] |
Wed, 14 July 2010 17:38 |
Gary Casey
Messages: 448
Registered: September 2009
Karma:
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Senior Member |
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I think flare fittings - steel, aluminum or brass - would work just fine. I'll
not admit publicly that I have flared an aluminum line with an automotive flare
(45 degrees?) and installed it with a 37-degree fitting....still flying 20 years
later... The fundamental problem using aluminum lines is that aluminum is
subject to fatigue failures, so the line needs to be well supported so nothing
vibrates. Steel lines are much, much more forgiving. And much, much cheaper.
I would not consider aluminum in an automotive application - the weight savings
isn't worth it.
FWIW
Gary Casey
Previous posts:
Steel brake lines work real well also and I think they are much
cheeper than alum..
On Wed, Jul 14, 2010 at 5:27 AM, Steven Ferguson <botiemad11@gmail.com> wrote:
> George,
> ?I have had good luck with alum fuel lines with 37 deg flares. ?The
> soft alum really conforms well to the male surface. ?Much easier to
> use that SS which tends to gall softer materials.
>
> On Tue, Jul 13, 2010 at 2:21 PM, George Rudawsky <GeorgeRud@aol.com> wrote:
>>
>>
>> It sounds like the flare is the same, but I wonder if corrosion from dissimilar
>>metals would be a problem. ?Also, the softer aluminum may deform too much when
>>tightened by the steel nut (?).
>> --
>> George Rudawsky
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