In {TAIL ~ another embodiment}, the rotary slide valve has a rotor which is formed by {HEAD ~ the crankcase} and a stator which is a ring housing 
In { TAIL ~ another embodiment } , the rotary slide valve has a rotor which is formed by { HEAD ~ the crankcase } and a stator which is a ring housing
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH