Re: The Good Old Days


Anthony Thompson <thompson@...>
 

Justin Kahn wrote:
As for replacement working leaf springs, have you looked in the PSC
catalogue? Years ago Kemtron made them from copper and they were (as I
recall) also full-elliptical as contrasted with the stamped steel
semi-elliptical Silver Streaks (not that modelers back then weren't happy to
have Silver Streak kits and trucks--at least I was).
That's a very particular copper alloy, beryllium copper, a very strong and stiff material used for non-ferrous springs (plain copper would be, bluntly, awful). Terrific stuff when cold worked, but hard to form into shapes. The Kemtron parts were excellent.

Tony Thompson Editor, Signature Press, Berkeley, CA
2906 Forest Ave., Berkeley, CA 94705 www.signaturepress.com
(510) 540-6538; fax, (510) 540-1937; e-mail, thompson@signaturepress.com
Publishers of books on railroad history

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