Sleeve Valve Indian. Cannon Ball Baker?
Geert sent in these photos of an old c1912 watercooled Indian single cylinder motor that his father bought in Florida in the 1990s. The seller claimed that the motor came from Cannon Ball Baker. It has horizontal rotary sleeve valves atop the head, à la the Cross layout, but with two spinning valves instead of the more common single valve layout. The history of the motor is not known to Geert other than what the seller had mentioned.
Ed Youngblood wrote of Baker’s work here. But it seems that he started in 1929. Is there any chance that this old Indian could be tied to Baker? If you have any info, please post in the comments below.
The valves were driven by chains on the timing side of the motor. The chains are gone, but the sprockets can be seen in the first photo. The sleeves are still in the head (shown in the middle pics with two drive dogs each and their rectangular ports). And the drives with their two engagement slots can be seen in the last pics.
Rotary sleeve valves were promising in the 1920s as they are today. But they have always been hindered by the difficulties in sealing the valves during operation, due to thermal expansion. There may also be some issues with valve timing, but likely the issues could be solved with some modern numerical modeling, analysis and materials. Ceramic seals are an option that Baker could only have dreamt of. We’ll see what the future holds.