Olde Knabe Back Action

[Avery Todd]

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Terry,

I think these are his two posts!

Terry said:
 >"Rebuilding an old (1900) Knabe grand backaction. The darn flanges are
 >glued and screwed to the rail! I was surprised to find no sandpaper on
 >the rail. I'll be doing some repining, etc. Regarding the flanges glued
 >to the rail, what have folks found to be a good procedure to get this
 >situation back up to snuff?
 >
 >Also, what amount of friction is recommended for the back action flanges
 >and the thingee that has the sostenuto activator thingee on it (what are
 >the proper terms...?).
 >
 >Thanks.

Date: Sat, 2 Oct 2004

Terry,
I've found the following to work rather well: While the flanges are still 
attached to the rail, center punch and drill for the appropriate flange 
screws. Then remove the flanges. I prefer to put some moisture (just a 
little) and heat to them. They'll pop off fairly well with a little coaxing 
with a chisel. Clean up the rail and add sandpaper strips w/appropriate 
holes punched. I like to attach the sandpaper with cold hide glue as it 
gives you a sufficient amount of time to get everything lined up and it 
doesn't leave lumps/bubbles in the sandpaper. (less traveling needed, but 
there will be some.)

Most of these do not have "damper barrels", so I add them. a simple jig for 
the drill press will get that job done. Drill for a tight fit and press 
them in with a punch in the drill press after the holes have been drilled. 
Sure will make puttin' em in a lot easier.

BTW, the thingee you are wondering about terminology-wise, is called the 
Top Flange.<G> I like to use the specs. from the olde Steinway manual. 
Without looking, I recall the Top Flange is
1-3 grams and the Lever is 3-5 grams. Hope that helps.

Best Regards,
Joe Garrett, R.P.T.
Captain, Tool Police
Squares


At 04:43 PM 10/3/04, you wrote:
>Joe, you bad boy - you type new subject titles, so I don't know exactly 
>what you are responding to. Bottom line: You say you forgot to add 
>......... but I can't find the original response to my post.
>
>......And I do so value your input........
>
>Terry Farrell
>----- Original Message -----
>From: <mailto:joegarrett@earthlink.net>Joe Garrett
>To: <mailto:pianotech@ptg.org>pianotech
>Sent: Sunday, October 03, 2004 2:29 AM
>Subject: Re: Olde Knabe Back Action
>
>Terry,
>I forgot to add: Most of these do not have "damper barrels", so I add 
>them. a simple jig for the drill press will get that job done. Drill for a 
>tight fit and press them in with a punch in the drill press after the 
>holes have been drilled. Sure will make puttin' em in a lot easier.
>Best Regards,
>Joe Garrett, R.P.T.
>Captain, Tool Police
>Squares R I
>
>P.S.
>Since we didn't get a story of devastation, I assume your plywood shutters 
>held.

Avery  
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