Just musing, whilst replacing 96 valves on a nice Wheatstone EC. The outer reed pan chambers have valve pins to limit travel on all but the smallest valves. Why were they not put on the valves on the inner face of the reed pan? They would obviously have to be right angled pins but surely the danger of a valve curling to the point where it didn't work it just as likely on the inside as it is on the outside. Any ideas?
Andrew
Why no valve pins on the inside?
Started by
Andy Holder
, May 20 2012 12:36 PM
3 replies to this topic
#2
Graham Collicutt
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Posted 20 May 2012 - 12:46 PM
Just musing, whilst replacing 96 valves on a nice Wheatstone EC. The outer reed pan chambers have valve pins to limit travel on all but the smallest valves. Why were they not put on the valves on the inner face of the reed pan? They would obviously have to be right angled pins but surely the danger of a valve curling to the point where it didn't work it just as likely on the inside as it is on the outside. Any ideas?
Andrew
There is no chamber wall for the valve to get stuck against if it goes too far.
Graham
#3
Geoff Wooff
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Posted 20 May 2012 - 02:20 PM
The valves in the chambers will click against the Pallet board (Action Board or whatever you call the inside face of the ends) if there are no pins to stop the valves opening so far. The inside set of valves do not have anything to bang against.
#4
d.elliott
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Posted 20 May 2012 - 05:12 PM
Just musing, whilst replacing 96 valves on a nice Wheatstone EC. The outer reed pan chambers have valve pins to limit travel on all but the smallest valves. Why were they not put on the valves on the inner face of the reed pan? They would obviously have to be right angled pins but surely the danger of a valve curling to the point where it didn't work it just as likely on the inside as it is on the outside. Any ideas?
Andrew
Andy,
Valve pins in chambers simply stop the valves getting wedged onto the gasket at the top of the chamber walls, valve pins on the non-chambered are usually reserved for big reeded instruments (with long valves that need support), these pins are not pins, they are called called valve springs and are crucial to big reed instrument responsiveness.
Dave
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