[CAUT] Renner back action

[Jim Busby]

David, Aaron,

I haven't caught up on all the posts but has anyone mentioned that this is the perfect time to correct the "magic line" or line of convergence? I actually remove keys, put a string, etc. etc. and move that pivot if needed. And it usually is.

Jim Busby

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of David Love
Sent: Tuesday, September 02, 2008 12:32 PM
To: 'College and University Technicians'
Subject: Re: [CAUT] Renner back action

It's not an all day job for the Renner kit if you are not doing any
modifications.  The first time you do anything it takes longer but that will
be the case whether it's a Steinway back action or a Renner one.  Don't
imagine that no modifications will be necessary if you use the one from
Steinway.  Modifying is often to correct the geometry of the original and
that may be necessary no matter whose kit you use.  A straight ahead
duplication can be done in a couple of hours on either one.  If you are
adding a fine capstan adjust you can add another 1-2 hours.  Relocating the
return spring takes no extra time as you have to locate the original anyway.
Figuring out whether the pivot pin is in the right place can take a little
time but once you establish where to put it there is no extra time involved
in putting it there.  If the concern is how to charge for making a new one
then Jon Page's 4-6 hours is about right depending on the extent of the
modifications.  That, of course, doesn't count the actual installation of
the dampers themselves or regulation.

David Love
davidlovepianos at comcast.net
www.davidlovepianos.com

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Jeff
Tanner
Sent: Tuesday, September 02, 2008 10:29 AM
To: College and University Technicians
Subject: Re: [CAUT] Renner back action

Any reason not to use the back action from Steinway?  They CLAIM it is a 2
hour job, and that there shouldn't be any re-engineering. I suppose their
claims are based on what is being done in the restoration center where the
techs do that job on a regular basis.  I've not done that job. I'd ordered a

S&S back action for a B at the university, but we never got that piano in
the shop before I left. But it is SUPPOSED to be made to fit as a direct
replacement with a simple side to side adjustment.
Tanner

----- Original Message -----
From: "Alan McCoy" <amccoy at mail.ewu.edu>
To: <caut at ptg.org>
Sent: Tuesday, September 02, 2008 12:33 PM
Subject: Re: [CAUT] Renner back action


> Aaron,
>
> You better allow a full day for the first one. You may or may not run up
> against difficulties. I did an A last spring though and it was a pretty
> straight forward job. On the other hand I was going to do a 70's vintage
> M&H
> BB last fall and I would have had to re-engineer the thing - it didn't
> have
> pivot blocks, each underlever had a jack spring, it was not your typical
> backaction.
>
> Alan
>
>