[CAUT] Friday puzzler

[Porritt, David]

In the piano or on the bench?

dp

David M. Porritt, RPT
dporritt at smu.edu


From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Paul T Williams
Sent: Friday, June 25, 2010 3:53 PM
To: caut at ptg.org
Subject: Re: [CAUT] Friday puzzler

Thats the thing, David!  Nothing on the neighborhood is affecting it!  Perplexing!  It checks with normal let-off and drop, but then won't fall back into place.  Springs are not real strong, but firm.

Paul


From:

"Porritt, David" <dporritt at mail.smu.edu>

To:

"caut at ptg.org" <caut at ptg.org>

Date:

06/25/2010 03:49 PM

Subject:

Re: [CAUT] Friday puzzler


________________________________



Paul:

Look between everything.  Jack center pin sticking out?  Anything else between hammers, shanks, wippens interfering?

dp

David M. Porritt, RPT
dporritt at smu.edu


From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Paul T Williams
Sent: Friday, June 25, 2010 3:44 PM
To: CAUTlist
Subject: [CAUT] Friday puzzler

Hi Cauter's.

I always have a new one for you.

I'm regulating (bench style, right now) a '32 Steinway L that I rebuilt 3 years ago with new hammers/shanks/flanges, but old wips.  All went fine until I took off the stack to raise the sharp height a bit throughout, I figured that quicker and easier. Everything worked before I took off the stack.


Anyway, now the A-3 is hanging up on return.  It worked before.  I checked the action centers, repinned the wip flange as it was pretty tight, but nothing happened. Put everything back.  All works, except this one.  I checked the hammer "swing test";  all good with 7 swings.  all other action centers good. The key is free and easy, polished the capstan, lubed the wip cushion, brushed and tefloned the knuckle...you know, all the right stuff.  It's still hanging up on return.  What's up with that?  Just the one key.  No neighboring keys are interfering. I checked out replacing the wip with a new one, and still the same thing! I switched a neighbor hammer, but still the same thing. I can't see anything hanging up.  I need to have this action ready and back in action Monday morning.

What's going on?

Thanks for the input as always.
Paul

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