After reading this-->Replacing Valve Linkages
A man trying to remove his B&S linkage into some kind of copy mechanism of a miniball linkages.
I saw a rotary trumpet with a S style linkage but the seller changed the clockspring actuation to a modern spring-loaded one.
My next thought was of buying an Amati rotary linkage set to fit it on the trumpet like Mr Denney did.
But due to the fact the S style linkage are held between two rotor hinges but the amati supports a single hinge rotor.
It could be a fun project but can it be done?
I could buy these-->http://www.voigt-brass.de/gxshop/pro...luegel-ns.html