[TPIN] BACH 37

[Kellogg, Steve]

I don't know why this would only happen when you are blowing air through
the horn unless it was temperature related and binding as your horn
warms up. Things expand as they heat up. I had problems with my valves
until I changed the valve guides and that seemed to do the trick. Try
swapping the valve guides between one of your good valves and the bad
valve and see if the problem follows. If it does...that's your problem.
Another thing could be if your 3rd valve stem is bent and binding in the
valve cap. Look real close to see if the gap between the opening in your
valve cap and the valve stem seems to close up as you press your valve
down about 1/2 way on your 3rd valve. How about the valve springs? Are
they strong enough to bring the valve back up or are they worn out? You
can diagnose a lot of things by swapping parts between your bad valve
and one of the good valves and seeing if the problem follows. Do it one
component at a time to see if you can isolate the problem. If it's a
combination of problems, things get more complicated. Then again maybe
you tried all of this and I should just shut up...So I will.

Stephen Kellogg 


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-----Original Message-----
From: tpin-bounces at tpin.okcu.edu [mailto:tpin-bounces at tpin.okcu.edu] On
Behalf Of Bill Cryderman
Sent: Monday, September 18, 2006 2:26 PM
To: Tptgirl at aol.com; tpin at tpin.okcu.edu
Subject: Re: [TPIN] BACH 37

My Martin cornet has that same issue, so I'm looking for advice also!
Thanks,
Bill Cryderman

>>> <Tptgirl at aol.com> 9/18/2006 2:12 PM >>>
Hi 
 
I am looking for a Bach 37.
 
I prefer one made before 1995, but I need one that plays well, is in
tune, and the valves are in excellent condition.  Cosmetic wear on the
finish is  not an issue for me.
 
Let me know if any of you have one you don't use any more and want to
get rid of for a GREAT PRICE!
 
Mine has developed a valve issue that none of the repairmen seem to be
able to resolve.
 
The third valve works BEAUTIFULLY, until you start blowing air (playing
the horn), then it sticks about half way up about 50% of the time.  We
have determined that it is not the way I am pressing down (the angle).
I have  had it lapped out twice... still a problem.
 
Any input on that would be great too!
 
Thanks
 
Cheri
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