Harry Bloomfield Joined 30 Dec 2018 Messages 29,904 Reaction score 6,681 Location Up North Country 27 Aug 2023 #1 A novel idea..
bernardgreen Joined 3 Nov 2006 Messages 28,659 Reaction score 3,507 Location Bedfordshire Country 27 Aug 2023 #2 A version of the principle of the swashplate engine.
Mottie Joined 27 Feb 2017 Messages 52,004 Reaction score 11,437 Location Essexshire Country 27 Aug 2023 #3 Lost me at 'Wavy thing'. Far too technical…….