Harry Bloomfield Joined 30 Dec 2018 Messages 30,059 Reaction score 6,738 Location Up North Country 27 Aug 2023 #1 A novel idea..
bernardgreen Joined 3 Nov 2006 Messages 28,650 Reaction score 3,509 Location Bedfordshire Country 27 Aug 2023 #2 A version of the principle of the swashplate engine.
Mottie Joined 27 Feb 2017 Messages 52,716 Reaction score 12,055 Location Essexshire Country 27 Aug 2023 #3 Lost me at 'Wavy thing'. Far too technical…….