[CAUT] Renner back action

[David Ilvedson]

Great articles in the Journal...can't remember exactly, about back action replacement, including the magic line...

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "Jim Busby" <jim_busby at byu.edu>
To: "College and University Technicians" <caut at ptg.org>
Received: 9/2/2008 11:52:29 AM
Subject: Re: [CAUT] Renner back action


>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
>>
>>