Kimball spring rail springs

[John Ross]

Hi John,
This was a common occurrence in some actions of the late 70's.
It was improperly cleaned felt, that caused the springs to corrode. There
was a chemical action between the two.
I know it happened to Lowery pianos, made by Story and Clarke, of that era,
and I believe the actions were Pratt Reid (sp)
When you replace the springs, make sure that you remove the little felt
strip, and clean the contaminated area.
When you replace the springs, I find it easier to drill an extra hole and
install them like a French butt spring, remembering a piece of welding rod
through the coil to stop the coils from deforming during installation and
tension adjusting.
If you need clarification on any of this, e-mail me.
Best regards,
John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca
----- Original Message ----- 
From: "John Lillico" <staytuned@idirect.com>
To: <pianotech@ptg.org>
Sent: Wednesday, January 28, 2004 11:38 PM
Subject: Kimball spring rail springs


> Ran into model D433, S.N. B65486 today, for any Kimball fans.
>
> The spring rail springs are weakening and breaking. Does anyone know why
this would happen?
>
> I expect jack springs from WWII era to fail, but why would these springs
give way on a 1960's-70's piano?
>
> It's a rare finding in my forty years experience.
>
> John Lillico, RPT
> Oakville, ON  Canada
>
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives