Yea, words getting mixed up and was a bit late - meant that applicable valve types (and induction?) should be dependent on the fuel type rather than the engine layout.
Two Stokes can use valves (ie, Uniflow Scavenging) but we also have some pretty interesting technology with two stroke engines like deflection pistons, separate lubrication systems, loop scavenging etc... That are contemporaries to SOCH, DOCH, OHV, Pushrod designs.
- at the moment two strokes have a heavy disadvantage in power compared to four stroke engines - you're lucky to get 1/2 the horse power for similar engines between two stroke and a T Head
- Realistically you get about the same Horse Power - DKW's 900cc engine in 1953 outputted 34 Horses compared to the Riley Elf in 1961 that had a 850cc engine that outputted the same 34 Horses
To get us to having useful two stokes we would need to have the separate forms of two stroke engines (ie, Uniflow, loop scavenging, Deflection Piston) which would be possible if valve type was set by the fuel type.
- I have attached example of what I mean (with everything apart from needed removed for easy reading)
Two Stokes can use valves (ie, Uniflow Scavenging) but we also have some pretty interesting technology with two stroke engines like deflection pistons, separate lubrication systems, loop scavenging etc... That are contemporaries to SOCH, DOCH, OHV, Pushrod designs.
- at the moment two strokes have a heavy disadvantage in power compared to four stroke engines - you're lucky to get 1/2 the horse power for similar engines between two stroke and a T Head
- Realistically you get about the same Horse Power - DKW's 900cc engine in 1953 outputted 34 Horses compared to the Riley Elf in 1961 that had a 850cc engine that outputted the same 34 Horses
To get us to having useful two stokes we would need to have the separate forms of two stroke engines (ie, Uniflow, loop scavenging, Deflection Piston) which would be possible if valve type was set by the fuel type.
- I have attached example of what I mean (with everything apart from needed removed for easy reading)