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Re: My Louis Cor problems

Author: Chris P
Date: 2018-12-15 17:47

Ok, now the attachments have shown up I can see exactly what the problem is.

http://test.woodwind.org/clarinet/BBoard/download.html/10,543/20181213_1153191.jpg
Your cor is essentially thumbplate system with fully automatic 8ves, so the top joint Bb key shouldn't be linked to be closed by LH3. Only at some point, someone has tried to convert it to dual system and added a crude adjusting screw to the bridge from the Bb pad cup to the side key (which duplicates the thumbplate for trilling).

http://test.woodwind.org/clarinet/BBoard/download.html/10,544/20181213_1153251.jpg
Normally a German spec or conservatoire system instrument will have a side G# key and the Bb key is linked to LH3, so this one hasn't been converted correctly - it's had the linkages added at some later stage rather than having been built as a German spec instrument. Thumbplate systems shouldn't have the Bb key linked to LH3 as that will bend the side key if you use it and the side key on cors is prone to being bent or broken at the best of times.

http://test.woodwind.org/clarinet/BBoard/download.html/10,545/20181213_1153301.jpg
It doesn't have the 1-2-3 system whereby putting down any RH finger will give Bb and C - there'd be a link from the F# clutch (with the two adjusting screws) to an extra bridge key bypassing and linked to RH1 to raise the linkage but leaving RH1 raised when operated by RH 2 and 3 (and closing RH1 will also raise the linkage).

Louis have made German spec (fully automatic) ring key conservatoire systems to order as have Howarth (their S4 model) who took over from Louis, only they worked in the correct way.

Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.

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