I can disagree that gravity exists too. But that doesn't keep me from floating away. It is still a factual and proven existance.
Here is a couple more trys at an explaination;
Short stroke - drag race for 1/8th mile -car can only go so fast in a short track. It can also turn around faster and make it back to the start line to run the length of the track again. It can theoretically make more runs in a minute than it can on a longer track. That is a like short stroke High RPM engine (283).
Long stroke - same drag car can go faster if given more track (1/4 mile). It will take longer for it to turn around and get back to the starting line. It theoretically can create more work in one pass down the strip. That work is like the torque of a longer stroke, but slower RPM engine (292).
The ability of the piston in an engine to go faster in its bore (the track), requires a longer stroke. The piston has to slow down and "stop" before going back to the starting point on all length strokes.
Think of pushing a wheel barrow full of dirt up an incline. Your back is against the wall and that only gives you 3 feet to get started before you get to the incline. It will take great effort to get a wheel barrow to the top of the incline if you only have two steps to get started. That is a short stroke 283.
If you have the same incline, same wheel barrow full of dirt, but the wall is further from the incline giving you 6 steps before you get to the incline, the momentum of the extra steps will help you get the wheel barrow up the incline with a little more ease. The majority of the work was exerted on the steps preceding the incline instead of "on" the incline. That is a longer stroke 292.
In both scenerios the wheel barrow will start to slow down once it is on the incline. The momentum of the extra steps (ie. longer stroke) will make less work while on the incline.
Look at the torque curves from dyno test readouts. The torque that rises rapidly and stays high longer (a flatter line) "at a slower rpm", is the type of engine you should look for to haul a heavier load like a grain truck.
Now if you want to push an empty wheel barrow (a light weight Corvette) up the same incline, two steps (short stroke) may get you up the incline jsut as fast or faster. Less work and less length to travel. A dyno torque curve for this engine may rise fast, be just as flat, but the RPMs will be higher.
If one engine is producing its peak torque at 50 mph, the other may be producing the same peak torque at 75 mph.
