[pianotech] String Replacement Emergency Question (well, kinda)

Terry Farrell mfarrel2 at tampabay.rr.com
Fri Feb 11 11:33:23 MST 2011


Interesting idea. I didn't need much, and perhaps that might have done  
it. Water under the bridge now though. I unwound a few windings and re- 
spiced into the speaking portion already. Got a tool box filled with  
drills and pins and files, etc., etc.

Thanks though.

Terry Farrell

On Feb 11, 2011, at 1:10 PM, Mark Schecter wrote:

> Can you gain a little length at the top by untwisting a couple turns  
> of the loop at the hitch end? Then I think I'd try it with the  
> current UTP, because maybe it won't break.
>
> -- Mark Schecter
>
>
>
> On Feb 11, 2011, at 9:33 AM, Terry Farrell  
> <mfarrel2 at tampabay.rr.com> wrote:
>
>> Hi Folks.  I just got back to my shop after trying to replace a  
>> spliced bass string and have run into a problem.
>>
>> The piano is a 1950 good condition (relatively speaking) American  
>> console piano. Bass string broke (monocord) the other day while  
>> tuning. Strings are a little bit tubby, so I recommended splicing  
>> rather than replacement to maintain even tone. String broke right  
>> at the tuning pin. I spliced the 0.049" wire (ouch!) and made a  
>> nice neat little (well, no so little because I could only pull so  
>> hard on the darn thing - couldn't tighten it up much) knot. I made  
>> the knot as close to the end of the broken string as possible.  
>> Unfortunately, the string has it's tuning pin fairly close to the  
>> upper speaking length termination (what the heck do you call the  
>> little steel pin (looks like a small hitch pin) on that ridge on  
>> uprights that the strings bend around and form the upper speaking  
>> length termination? I'll refer to it as the upper termination pin  
>> (UTP)).
>>
>> So I go to the home this morning and attempt to install the spliced  
>> string. Put everything in place and find that the knot won't quite  
>> pull past the UTP (I thought it would once I get a little tension  
>> on the string). Tap it a bit, won't go. I tried twisting the string  
>> for  exposure of a more favorable part of the knot to the UTP -  
>> still won't pull past the UTP. Maybe a little more tension - nope,  
>> won't go - knot still hung up on UTP.
>>
>> Okay, so plan now is to remove some windings and make a knot a  
>> centimeter or so lower into the speaking portion of the string. I  
>> know it may affect string tone - I figure I'll just try it and see  
>> how it sounds.
>>
>> That's not the problem. The problem is that I have now bent the  
>> UTP. I think it is bent enough that whether I put a re-spliced  
>> string on the piano or a new string, that the pin may fail - and  
>> even if it doesn't fail, it may bend a little more and not retain  
>> the string.
>>
>> Seems to me I have two options: Cross my fingers and go for it and  
>> see what happens. Problem with that is that the UTP may break, and  
>> if it does, it will likely break right at the plate surface - that  
>> will make it nearly impossible to remove. The other option is to  
>> attempt to remove it while I have something to grab onto and try to  
>> pull it out (while again, crossing my fingers). If it pulls out,  
>> then all I need to do is find a similar size (or a bit larger)  
>> steel pin and replace.
>>
>> I'm looking for recommendations. I keep telling myself to keep my  
>> camera with me. Maybe this will convince me to do so. Sorry, but no  
>> picture. I've chopped off many a hitch pin, but not UTPs. Are they  
>> just tapped in and I should be able to simply pull one out?
>>
>> I realize that I can drill a hole immediately adjacent to the  
>> original pin (if it were to break) and install a new one. But that  
>> will move the string way over and then I'll have a poorly aligned  
>> hammer (I guess not that big a deal) and I'll have to fart around  
>> with the damper. I'd rather utilize the original UTP hole. Probably  
>> would have been smart of me to have measured the diameter of the  
>> UTPs in the piano. I guess I'll have to bring a few sizes of drill  
>> bits and steel pins with me when I go back (ASAP - in an hour or so).
>>
>> I wonder how many hours it's gonna take me to replace one string  
>> (at my standard string replacement fee). Crud.
>>
>> Glad I like to watch some very philosophical television shows.  
>> Because of that I am well aware that "worse things happen at sea!"
>>
>> Terry Farrell
>>



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