Rowland, I suspect it is high tensile steel, but do not
know. My tail spring has lasted for 14 yrs without any
sign of significant corrosion ( & it has flown through
plenty of rain!) with just two pot paint on top of (I
think) acid etch primer. Could get more precise info from
Roger Targett if you like. Regards, David
Rowland Carson <rowlandcarson@gmail.com> wrote:
><rowlandcarson@gmail.com>
>
> After a recent presentation at the Gloster Strut where
>the aircraft on display had all its steel parts
>electro-phoretic coated, I made enquiries at the firm the
>builder had used about anti-corrosion treatment on my
>tailwheel spring arm. The guy I talked to advised that
>the EP coating is a bit like an epoxy paint, and could
>start to go chalky after a few years. But as Id be
>liable for the minimum charge anyway, he suggested I have
>instead a much more effective treatment which is a type
>of zinc plating and results in a greenish finish that can
>be sprayed over for cosmetic appearance. However, that
>process involves an acid bath and could lead to hydrogen
>embrittlement if the arm is high-tensile steel. He said
>it should be OK if the steel was not high-tensile - above
>about 60 ton or 1040 Newtons.
>
> Does anyone know the specification of the steel used for
>the tailwheel arm?
>
> Or - has anyone a better suggestion for corrosion
>protection?
>
> in friendship
>
> Rowland
>
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>...
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> http://www.rowlandcarson.org.uk
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