Sammy Miller Rides the 1925 Grindlay-Peerless ST1 at the VMCC Banbury Run. скачать в хорошем качестве

Sammy Miller Rides the 1925 Grindlay-Peerless ST1 at the VMCC Banbury Run.

Sammy Miller rides the 1925 Grindlay-Peerless ST1 at the 2025 VMCC Banbury Run. The standout feature on this bike is the somewhat unconventional, yet innovative sleeve-valve engine from Barr and Stroud of Glasgow. It is a four-stroke engine which was frequently used to power early aircraft. The design uses a ported sleeve-valve that is meddled between the piston and its cylinder. The sleeve is caused to slide up and down inside the cylinder, and at the same time rotate about its axis. This oscillating motion allows the sleeve to open and close both the inlet and exhaust phases of the four-stroke cycle. As a result, there are no pushrods, valves, half time pinions, cams or rockers in sight! The setup allowed the spark plug to be best positioned above the piston for maximum efficiency, however there were downsides to the pattern. The top end of the motor was prone to overheat, and sleeve-valve engines were renowned as oil-burners. As you can hear though, they sound incredible so we can forgive the negative sides! Thank you to VMCC for the invite to this top annual event that runs out of the National Motor Museum. Video and content is original and copyright to The Girder Club.