GuidoCorona
Veteran Member
Joined: 29 May 2014
Posts: 377
Location: Summerville, SC
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 Posted: Sat Jun 16, 2018 7:16 am Post subject: Step bore on Flugel - What does it do? |
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Miel Adams has adopted a step bore valve configuration on the Adams F4 4-valve flugel: 0.413 on valves 1, 2, and 3… while valve 4 seems to be bored at 0.450 .
Yet, the engineering goal for step bores is still a little unclear to me. What is the expected effect of a step bore on
• Tone and Overtones… Both below the staff and down into the pedale range, as well as through the staff and above.
• Intonation throughout the range
• Core
• Projection
• Slotting
• Stability on low to high dynamics
What might be other advantages and disadvantages when contrasted with single 0.413 bore on all four valves?
Regards, Guido
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Cornet: Carolbrass CCR7772R-GSS
Euphoniums: Miraphone M5050. Wessex Festivo |
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