personal discovery

[jolly roger]

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Hi david,
             I centre pin the whole works,  clean and burnish the springs and
slots. Retension the spring if required..  The old wax and graphite that has
hardened over the years in the slots, is any thing but a lubricant.
Travel, space and rotate flanges on the bench. 
I use a machinist square to ensure the lifters are plumb,  this I have found
very important, in making wire bending and regulation.
Replace leather and felt as required. I covered this in depth in my current
Damper series.
Horizontal flange Steinways, I have only centre pinned one, and it's my last. 
In future in goes a new Renner back action. i don't think they are worth the
effort to service. 
The added advantage, it will be easy to service for the next 50yrs.
The better your bench prep work the easier the alignment, later in the
process.
If shims are required on the lifter tray pivots, to align the keys to the
lifters every thing is easy to see and get at, with no strings, and no action
stack.
Regards Roger




At 06:24 PM 3/6/01 -0800, you wrote: 
>
> Hi Roger,
>  
> What was annoying was I had the back action out weeks earlier and had gone
> through it, then installed it rough regulated and then later discovered the
> wobbly lever...I may have over-stressed it somehow...Question:  When you go
> through the back action what do you do?  This one had all the flanges glued
> in and tight...would you have loosened them all and reglued?  Do you install
> screws to insure against loosening later?  I'm still a little fuzzy on
> aligning the back action to the keys...could you expand on that?
>  
> David I
> *********** REPLY SEPARATOR ***********
>
> On 3/6/01 at 12:00 AM jolly roger wrote:
>>
>> Hi David, 
>>                I'm having a chuckle, I discovered the same thing in a
>> similar manner, only I was waiting for some damper felt on back order. 
>> Been doing that way for a number of years. 
>> On a rebuild I always pull, and service, the back action.  Even with
screwed
>> flanges it is a hassle getting at them, when every thing is assembled.. 
>> Another time saver: align the back action to the keys with the stack off,
>> and no strings on the piano. 
>> Perfect unacorda every time. 
>> Regards Roger
>>
>>
>>
>>
>>
>> At 04:30 PM 3/5/01 -0800, you wrote: 
>>>
>>> List,
>>>
>>> So I'm here in the shop finishing up a Steinway M.  I noticed a wobbly
>>> damper lever (dampers already rough regulated).  I put it off until
finally
>>> I decided I couldn't leave it.  I pulled the dampers and the underlever
>>> system to  fix the problem.  Pinning was loose so I popped off the
>>> lever/flange and repinned and then reglued and clamped.  I looked at back
>>> at the piano and thought..."Hey this would be a good time to finish up the
>>> let-off!"  So I installed the action and found I was able to align the
>>> hammers, do let-off/drop, level strings and whatever I can think of.  
>>> WOW!  This is the way to do it if your rebuilding a grand.  Restring, hang
>>> your hammers rebuild action, whatever and then regulate the action with
the
>>> dampers out of the way.  Install your dampers at the end of the job...this
>>> is probably common knowledge to everyone except me (and I've thought of it
>>> but never actually did it)but if anyone hasn't tried this give it a shot!
>>>
>>> David Ilvedson, RPT
>>
>
>
>
>

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