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Posted: Tue Aug 07, 2007 2:03 pm
by cjk
There's a 6 valve Rudolf Meinl F tuba round these parts with a right thumb activated second valve trigger. It works well, but it's over-engineered. I can't find a good picture of it.
Posted: Tue Aug 07, 2007 8:14 pm
by Daniel C. Oberloh
Its very doable, just takes time and money. I can think of two, maybe three mechanism designs but all would need to be custom machined/fabricated and require the valve slide tubes be removed and honed and properly aligned. It would take a little time to work out the dimensions and do the tech drawings but it can be done and in the end, look very nice. Is this a serious need or just an exercise in Q&A?
Best regards,
Daniel C. Oberloh
Oberloh Woodwind and Brass Works
Seattle, WA
206.241.5767
www.oberloh.com