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Aw jeez, I forgot...

I know it's the 2nd valve slide... But is it the inside or outside diameter? And of the slide itself, or the receiving tubes attached to the valve casing.

Obviously wasn't paying attention, but now that I have calipers it's all of a sudden relevant...

ID of the inner slide as far as I know

LeMark wrote: ↑Sat Sep 24, 2022 8:55 pm ID of the inner slide as far as I know

Ah, the least convenient place, then... thanks!

I seem to recall hearing before that Rudy Meinl bores are measured as the outer diameter of the slide tubes... Which slightly inflated the bore size. Maybe I'm wrong, but seem to remember this now. Wish I'd have tested that out...

Your Martin Eb has the same bore through all 3 valves. .625” if I recall.

York-aholic wrote: ↑Sun Sep 25, 2022 2:23 pm Your Martin Eb has the same bore through all 3 valves. .625” if I recall.

Jeez that's small

Wonder what the 1895 Conn is?

I pulled out a top action set from a Martin medium. It is .625.

Yes, small, but it isn’t a big horn so the bore is pretty proportional.

You like how it plays, so who cares what the bore is?


However, I will say that bugle plays pretty dang good with a .689 King cluster on it, especially with a miraphone 183 rotor hanging off the back of the cluster.

I’m really bored, so my bore is extra extra large.

bort2.0 wrote: ↑Sun Sep 25, 2022 3:43 pm

York-aholic wrote: ↑Sun Sep 25, 2022 2:23 pm Your Martin Eb has the same bore through all 3 valves. .625” if I recall.

Jeez that's small

Wonder what the 1895 Conn is?

If it’s that pipsqueak little E flat, also .625

Yorkboy wrote: ↑Tue Sep 27, 2022 10:07 pm

bort2.0 wrote: ↑Sun Sep 25, 2022 3:43 pm

York-aholic wrote: ↑Sun Sep 25, 2022 2:23 pm Your Martin Eb has the same bore through all 3 valves. .625” if I recall.

Jeez that's small

Wonder what the 1895 Conn is?

If it’s that pipsqueak little E flat, also .625

Thanks... And yes, that's the one. It's playable, but rough shape. Part of me is curious how much can be done for, say $200, so it'll be at least stable enough (and not jagged) so I can take it to Tuba Christmas or something.

I think I paid $30 for it. So really, no big deal either way. The best thing about that tuba is the engraving, anyway!

I have seen Conn, Blessing, Buescher, and King ancient E-flat instruments with a 5/8 inch bore.

Of course bearing in mind that we're talking about instruments that in principle follow a conical size progression from the same mouthpiece bore, so any conceivable "bore size" is represented at some point in there. Not saying it's immaterial, but it isn't a measure of the tuba, only of the valves.

bloke wrote: ↑Tue Sep 27, 2022 8:52 pm I’m really bored, so my bore is extra extra large.

Would that be your primary or secondary bore?

iiipopes wrote: ↑Wed Sep 28, 2022 8:46 am

bloke wrote: ↑Tue Sep 27, 2022 8:52 pm I’m really bored, so my bore is extra extra large.

Would that be your primary or secondary bore?

Mowing (particularly when the mower has been out-of-service PLUS I've been slammed with repairs - with no time to either repair the mower nor use it) is probably my primary bore - PARTICULARLY when the mower (once finally repaired, and I finally have time to use it) must serve as a bush hog, and I must cut acres (of what have become two-feet-tall "meadows") back down to one-inch lawns...B-O-R-I-N-G...as well as dumping endless 12' x 6' x 2' trailer-loads of thatch into ravines and washes.