Can you believe all you read?

[J Patrick Draine]

Jim Ellis (physicist) is the one who did the study confirming the  
bridle straps's importance in repetition. As Don wrote, it's in the  
Journal.
Patrick Draine

On Nov 20, 2005, at 3:08 PM, <justpianos@our.net.au> wrote:

> List,
> I'm still not convinced as all comments have talked of problems  
> only after
> ageing and deterioration of other parts of action, which would need  
> replacing
> anyway.
> Anybody with action design experience care to comment?
> Bruce Browning - The Piano Tuner.
>
>
>
>
>
>
> David Nereson <dnereson@4dv.net> said:
>
>>
>>
>>>>
>>>    It's true that the primary function of bridle straps is to  
>>> keep the
>>> jacks from falling under the butts when removing the action.   
>>> However,
>>> high-speed photography conducted by Yamaha in the late 1970's, I
>>> believe, showed that the bridle strap does indeed aid in  
>>> repetition in
>>> certain types of keystrokes.   At least one technician on this list
>>> claims that he can feel the difference if a bridle strap is glued  
>>> (or
>>> corked) into the catcher, rather than into the butt where the  
>>> catcher
>>> stem is glued.
>>>    Bridle wires are usually regulated so that they are taut when the
>>> soft pedal is depressed, i.e., when the hammers are at half blow
>>> distance.  Also, when the soft pedal is depressed, the tautness  
>>> of the
>>> bridles should not cause any keys to "wink."     Most verticals will
>>> play just fine without bridles, if everything else is regulated
>>> properly, and yes, you could probably just insert a rail, but why  
>>> have
>>> piano manufacturers continued to install bridle straps?  There  
>>> must be
>>> a reason besides "tradition," which goes by the wayside if it's not
>>> cost-effective.    --David Nereson, RPT
>>>
>>     I meant to add that I've seen at least one console--I forget the
>> make-- that was manufactured with no bridle straps.  I didn't have to
>> pull the action, so I don't know what keeps the jacks from jamming  
>> under
>> the butts if it's removed.   -- D.N.
>>
>> _______________________________________________
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>>
>
>
>
> -- 
>
>
>
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