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 Re: C to half hole D blip adjustment
Author: Chris P 
Date:   2018-09-10 17:48

Good - that works.

I've numbered the adjusting screws:

1 - F#-RH2 adjustment
2 - F#-RH3 adjustment
3 - RH3 height adjustment
4 - RH2-forked F vent adjustment
5 - low C key-RH2 adjustment

Start by getting the RH2 and 3 closing the F# key with the same pressure using screws 1 and 2

Adjust screw 3 so there's no lost motion between RH2 and 3 and the F# key - if there's lost motion between RH2 and the F# key, back screw 3 out. If there's lost motion between RH3 and the F# key, turn screw 3 clockwise until it's gone. You may have to come back to this screw (3) later on.

Operating RH3 should make the forked F vent open and close.

If not, the spring tensions could be wrong (RH3 spring too weak, F vent spring too strong) or the F vent rod screws could be gummed up or rusty or there are burrs on the ends of the key barrels, the rocker and F vent key barrels could be tight between the pillars or the tip of the F vent spring could be catching in the wood.

Also check the overlever for the split D#-E trill mechanism is moving freely - it should be loose on the feather key steel and only comes into play when you use the LH Eb key.

If everything is working well, hold down RH3 and open and close RH2 to see how the forked F vent moves. If it's opening and closing with RH2, then check its closure along with RH2 and so both pads close together and adjust screw 4 so both RH2 and forked F vent pads close together.

Now check your altissimo C#, D and Eb and adjust screw 5 (on the low C touchpiece arm) until they speak cleanly. Then check for any lost motion between RH2 and 3 and the F# key and adjust screw 3 to put that right. If the RH2 fingerplate has a stopper cork on its foot (the one under screw 4) then you shouldn't need to make any adjustments once you've set the opening of the mid fingerplate with the low C key.

Chris.

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 Topics Author  Date
 C to half hole D blip adjustment  new
Andy 2018-09-10 00:50 
 Re: C to half hole D blip adjustment  new
Chris P 2018-09-10 02:54 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-10 11:35 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-10 11:38 
 Re: C to half hole D blip adjustment  new
Chris P 2018-09-10 13:27 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-10 15:29 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-10 15:50 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-10 15:38 
 Re: C to half hole D blip adjustment  new
Chris P 2018-09-10 16:46 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-10 17:13 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-10 17:22 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-10 17:31 
 Re: C to half hole D blip adjustment  new
Chris P 2018-09-10 17:48 
 Re: C to half hole D blip adjustment  new
Chris P 2018-09-10 17:53 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-11 00:22 
 Re: C to half hole D blip adjustment  new
Chris P 2018-09-11 02:12 
 Re: C to half hole D blip adjustment  new
Andy 2018-09-11 10:07 
 Re: C to half hole D blip adjustment  new
oboeyogi 2018-09-12 10:26 
 Re: C to half hole D blip adjustment  new
Chris P 2018-09-27 19:42 


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