I have recently bought a large Kaiser four rotor BBb very cheap, there is no makers name of serial number, but it is a bit of a monster and blows freely through the harmonic series. The problem is the reason it was cheap - there is no valve operating mechanism.
Is it possible to buy a mechanism to fit myself?, where might I find such a thing. I'm in the UK but will import if that's the only eay to resurrect thus monster.
Four rotar mechanism
Four rotar mechanism
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- TheBerlinerTuba (Sun Mar 09, 2025 2:47 pm)

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Re: Four rotar mechanism
Jürgen Voigt in Germany sells that sort of stuff. You would have to have a local shop order it for you. Excellent quality.
Wade
https://shop.voigt-brass.de/en/B2B/CATA ... talog.html
Wade
https://shop.voigt-brass.de/en/B2B/CATA ... talog.html
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- bloke (Sun Mar 09, 2025 8:09 am)

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Re: Four rotar mechanism
Yes to Mr. Wade's information...and/but these are any thing but generic, so the shop is going to need to send that manufacturer a bunch of very specific carefully ascertained dimensional measurements.
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Re: Four rotar mechanism
I would recommend contacting Mike Johnson
https://m-j-c.co.uk/
https://m-j-c.co.uk/
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- arpthark (Sun Mar 09, 2025 3:56 pm) • davidgilbreath (Mon Mar 10, 2025 6:06 am) • Oedipoes (Thu Mar 13, 2025 11:41 am)