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 Re: Air leak -
Author: Chris P 
Date:   2019-07-05 18:36

That's a fixed C# key if it's only got a needle spring keeping it closed and with the pad cup soldered directly to the key barrel.

If you are blowing air into the joint under high pressure with the open-standing keys held closed, it's inevitable one of the closed sprung keys (the F key and fixed C# in this case) will blow open with the air pressure. The Eb and forked F vent shouldn't blow open as they're held closed by other keys.

How well does the lower joint hold a vacuum when you do a vacuum test?

Chris.

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 Topics Author  Date
 Air leak -  new
steve1221 2019-07-04 08:31 
 Re: Air leak -  new
Chris P 2019-07-04 23:39 
 Re: Air leak -  new
steve1221 2019-07-05 09:22 
 Re: Air leak -  new
steve1221 2019-07-05 09:23 
 Re: Air leak -  new
Chris P 2019-07-05 18:36 
 Re: Air leak -  new
steve1221 2019-07-06 05:13 
 Re: Air leak -  new
Chris P 2019-07-11 22:14 
 Re: Air leak -  new
steve1221 2019-07-13 07:15 


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