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First Valve Question for you Tech Guys

Posted: Sat May 29, 2010 2:39 pm
by Kory101
Hi all,

The first valve on my Yorkbrunner is a slightly higher than all the others when not pressed down. Not sure exactly how high but definitely noticeable to the naked eye. I also notice sometimes when I press the first valve down, it doesn't go down completely straight. It moves slightly to the side. Any ideas?

Re: First Valve Question for you Tech Guys

Posted: Sat May 29, 2010 4:06 pm
by imperialbari
Don’t know how the valve stems are mounted on that tuba. My immediate reaction is that the 1st valve stem has become partially unscrewed from the piston.

Klaus

Re: First Valve Question for you Tech Guys

Posted: Sat May 29, 2010 5:21 pm
by TubaTodd
Kory101 wrote:Hi all,

The first valve on my Yorkbrunner is a slightly higher than all the others when not pressed down. Not sure exactly how high but definitely noticeable to the naked eye.
Along with Klaus' observation, I would say your felt/cork/etc bumpers are a different height in the 1st valve. Sounds like you need Bloke washers. Bloke can "Make it Right."
m1x00233_9.jpeg
Kory101 wrote:I also notice sometimes when I press the first valve down, it doesn't go down completely straight. It moves slightly to the side. Any ideas?
That sounds typical of a horn whose valves were broken in by someone who doesn't use perfect up-and-down action in their valve technique. If you use a flat finger technique in any way, then what you are seeing sounds typical.