Conn 20k & 20j inner tubing, outer tubing, crooks/tuning slides

[LargeTuba]

I'm looking for 20k & 20j inner tubing, outer tubing, and crooks/tuning slides. I am totally aware that they are a different bore. I'm trying to complete each valveset so I'm in need of parts.

Specifically I really want a first valve crook.

I'm in Northwest Indiana

Thanks -T

[bloke]

re: the private message you sent about this...

I still believe that your best bet is to re-tube inner-outer (on the J - tuba) with Miraphone .772" inside/outside tubing (which they will sell to you, and at a reasonable price).

The K (sousaphone) tubing (inside/outside) can be ordered new from a Conn-Selmer dealer, but is now thinner gauge, and (though still .734" bore) also is not compatible with the thicker-wall slide tubing that was used on Elkhart and Texas production instruments.

People that have scraps of the old stuff (and who do repairs and rebuilds on old sousaphones) sorta tend to hoard the original-gauge stuff, as they tend to have need for it.

[LargeTuba]

re: the private message you sent about this...

I still believe that your best bet is to re-tube inner-outer (on the J - tuba) with Miraphone .772" inside/outside tubing (which they will sell to you, and at a reasonable price).

The K (sousaphone) tubing (inside/outside) can be ordered new from a Conn-Selmer dealer, but is now thinner gauge, and (though still .734" bore) also is not compatible with the thicker-wall slide tubing that was used on Elkhart and Texas production instruments.

People that have scraps of the old stuff (and who do repairs and rebuilds on old sousaphones) sorta tend to hoard the original-gauge stuff, as they tend to have need for it.

Thank you Bloke this is very helpfull.
Is the .772 different enough from the .775 to cause any issues?

I'm also still interested in crooks and such regardless of gauge just because I don't want to pay Conn parts catalogue prices if I could get it used.