Let-off question

[John Ross]

Hi Ric,
I put the hammers on myself.
The hammers were bored at Wally's, using the measurements I gave him. String
height and hammer flange centre pin height.
This was on a piano, that someone had previously replaced the hammers on,
and the piano had lost, its volume, and gutsy sound.
The Abel Hammers, and Renner shanks from Wally, did the trick. The volume
and power are back up.
The drop screw is probably the problem, my question should have told me. I
had just done the rough on the drop screws, and they looked like they were
almost burying. I was going back tomorrow, as I had just finished the
install and rough regulation, yesterday.
Funny how the mind forgets things at the end of a long day.
I certainly prefer working from origional parts, and not having to figure
out anew, how things should be.
Oh well, he got the concert grand Heintzman for a song, as the last owner
couldn't get anyone to get it to work right, with the wrong hammers, and
wrong boring, on the original shanks, that someone had done.
He really likes the sound now, and will like it even better, when the
regulation is completely done.

Thank you all, for getting my brain cells working again.
Now I know why I like going to the Conventions, it keeps the info in my
brain from, fragmenting. A nice Convention defrag, works wonders.
I hope to see a lot of you 'list members', in Nashville. The time is getting
closer.
Is there going to be a little get together for list members, as we had in
Arlington?
We should start the planning now.
Best regards,
John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca
----- Original Message ----- 
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: "Pianotech" <pianotech@ptg.org>
Sent: Wednesday, April 21, 2004 4:34 PM
Subject: Re: Let-off question


> John Ross wrote:
>
> >Hi List,
> >What might the problem be?
> >The hammer does not drop that little bit, after let-off.
> >If I weaken the spring, then I don't get the raise, after it comes out of
> >check, and I still don't get the small drop.
> >
> >
> Cant be a whole lot of things when it comes right down to it.
>
> If there is enough key dip, and blow distance and letoff  is to specs...
> then no drop means you have probably managed to get the bore distance a
> bit wrong forcing the letoff and drop to be set higher then is
> comfortable for the action. Some thoughts.... look to see how much jack
> travel there is when slowly pressing through letoff and whether or not
> it starts before/after/ or simultaneously with letoff. If before... well
> you know this stuff I rekon... adjust drop screw accordingly.  Could be
> a bit more complicated with a changed bore length... sometimes you run
> into a problem being able to turn the darn drop screws low enough  (or
> high enough depending on which way the error in bore went).
>
> Are the new hammers factory glued or did you do all the work yourself ?
>
> Cheers
> RicB
>
> >This is a grand with new hammers and shanks where the original hammers
were
> >not available.
> >It is probably something simple that I am forgetting, old age. :-(
> >The jack is coming out from under the knuckle.
> >Best regards,
> >John M. Ross
> >Windsor, Nova Scotia, Canada
> >jrpiano@win.eastlink.ca
> >
> >
> >_______________________________________________
> >pianotech list info: https://www.moypiano.com/resources/#archives
> >
> >
> >
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
>