[Hornlist] Bumpers

[phirsch]

Larry Jellison states:

I quit playing Kopprasch several years ago because I
thought the sounds coming out of my horn were
annoying, too.  Never thought of blaming the bumpers.

More somberly, has there ever been a discussion on
this list of bumpers? Bumpers need to allow quiet
valve action, not cause a bounce, yet consistently
stop at the same location over a long period of time
(years, hopefully). I have been thinking of trying
glue from a hot glue gun, applying the hot glue
directly to the bumper location-- should make a
perfect fit, then the excess would be trimmed with a
razor blade. The hot glue comes in varying grades of
hardness

Larry

I observe -

Interesting, though somewhat eyebrow raising. My 13 year old daughter has a
glue stick gun for various hobby related purposes and it would not be
something I'd be eager to wrestle with in the tight confines of the
underside of my horn. What I most wanted to say was somewhat obliquely
related to the topic, which is to say that I expect to hear some response
from our British correspondents about our misuse of the term that they use
for what we benighted New Worlders call subs (no, not hero sandwiches or
underwater boats, but those deputized by contracted players to fill in for
them at services).

I leave it to the satirical stylings of others to extract any potential
humor in this.

Cheers,

Peter Hirsch

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[Hornlist] Bumpers

[G Napuda]

All. Cork vice rubber-vinyl compounds. I dunno. While still working as a
Toolmaker early 60s, I made up a more than lifetime batch. We were working
on a project among whose supplies was a sheet of  black aerospace material
that happened to be exactly the right thickness for bumper height. Salvaged
some from scrap heap. BTW, I did need to make a punch that is still in my
toolbox.  These cylindrical bumpers fit perfectly (i.e. tight, snug, just
enough distortion). However, I guess I didn't do that good of a job as I did
need to shave them so as to align the valve openings. Also, had to replace
bumpers on both Sansones after about 20 years. Ah well. Can't win em all.
Take care. GN

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