I only have one of these in working order but 2-3 more to renovate. While the mechanism is a clever invention it probably fell out of fashion due to being slightly fragile, and also rapidly superseded by pedal timpani.
Adrian Bending
+44 (0) 7956 275804
mail@adrianbending.com
With many thanks to the photographers and film makers who have allowed me to use their work; Stephen Tasker, Chris Christodolou (RCM), Tommy Pearson, Monika Rittershaus (Berliner Philharmoniker), Will Schofield, Glyn Matthews, Angus Bremner (SCO) and Zen Grisdale.