sluggish butt questions

[pianolover 88]

I just started some action work on a customer's Knabe console. VERY sluggish 
hammers, jacks AND wippens. After blowing it out thoroughly, I applied 
naphtha/silicone mixture (approx. 8.1) and within 15 minutes the entire 
action was freed up and working beautifully! The naphtha soaked into each 
bushing, temporarily swelled them, then shrunk them down, leaving the liquid 
silicone behind. Unfortuately, protek or "goose juice" alone may not 
"un-sluggify" tight action centers since they are primarilly a lubricant. 
the naphtha and maybe even a small amount of water mixed in will briefly 
swell the bushing, but then when it's dry the bushing should shrink enough 
to allow free movement.



Terry Peterson



----Original Message Follows----
From: Richard Brekne <Richard.Brekne@grieg.uib.no>
Reply-To: pianotech@ptg.org
To: pianotech@ptg.org
Subject: Re: sluggish butt questions
Date: Sun, 14 Jul 2002 21:58:43 +0200

Tvak@AOL.COM wrote:
 >
 >
 > Should I ream the bushings?

Yes... if for no other reason then its a very good skill to
have in your box of tricks. And because I believe it is (if
done well) the best solution.


 >
 > Will Goose Juice make a difference where CLP failed?

Have never tried goose juice, but my experience is that if
CLP doesnt work its normally because too much junk has built
up or been added or both already. I generally take a few
samples over nite and if they dont respond I just start
repinning / rebushing.
 >
 > Is there a size 20 1/4 pin I don't know about?

Dont think so.... grin but you could try leaving 20.5 in
coca-cola over nite.
 >
 > Tell me I don't need to rebush, please, tell me I don't need to rebush.

Grin.. rebush !

 >
 > This is an area (flanges/bushings) in which I am more ignorant than I'd 
like
 > to be, which is why I buy these old pianos and fix'em up.  I am forced to
 > solve problems with little monetary risk  (this piano cost me $100) and 
no
 > client looking over my shoulder.  (Plus, it's alot of fun.)
 >
 > Any advice is (always) appreciated.

Learn this job Tom. You can get fast at it, and do a better
job on average then the factory line does. More skills just
increases your ability to make money and happy customers.

 >
 > Tom Sivak

Cheers !

RicB


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