Hi Dave
This thread peaked my curiosity. Like you and John I'm in favour
of the soft steel brake line but I note with interest in two of many
catalogues I have from the UK that copper tubing 3/16 to 5/16's
plus the nickel/copper alloy are still being sold for Morgans by a Morgan
outlet while in a generalist catalogue the same is offered. I wonder
if we are missing something?
Kind regards
Ed
Saskatoon, Saskatchewan
www.vintage-sportscar-touring.ca
'65 BJ8 '89 Morgan 4/4
Dave & Marlene wrote:
> John,
>
> Several materials have been / are being used for brake piping.
> First & worst is regular copper. Copper work hardens with vibration &
> flexing & fatigue cracks. Not good for brake or fuel lines.
>
> Low carbon annealed steel has been used for many years. It is not
> subject to fatigue failure but has rust & corrosion problems.
>
> Various coatings have been used to protect the steel, such as, copper &
> tin plating. A typical brand is "Bundy"
>
> A 90% copper - 10% nickel alloy (UNS C70600) has been used in Europe for
> many years. It has the fatigue resistant qualities of steel & very high
> corrosion resistance. I don't know whether present US car manufacturers
> & racing organizations are sanctioning It's use or not.
>
> The confusion may be between copper, copper plated steel, & 90/10 copper
> - nickel. The all appear to be somewhat copper color & all contain copper.
>
> Dave Russell
> BN2
>
> John Miller wrote:
>
>> You're not using copper for brakes lines, are you? They *will* fail,
>> which of course will always happen at the worst possible time.
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