ZnsaneRyder
Crazy Guy on a Bicycle
Just because both engines throttles are sync'd, does NOT mean both will operate at the same speed.
If one engine is loaded more than the other in a turn, the lesser loaded engine will spin faster.
If you are light on the throttle in a turn, the slip in the clutches will also allow a difference in speed as well. Nobody drives full throttle in a sharp turn unless they are doing donuts. But even if both clutches are fully locked up at high RPM, one engine still has the freedom to spin faster than the other depending on terrain, turns, etc.
With a live axle, you get pushed straight while turning because the rear wheels fight each other on turns because the outer wheel in a turn tries to go faster than the inner wheel at all times. Even if the engine is OFF, and you are just coasting in a turn, you still have that issue.
If each wheel had its own dedicated engine and clutch, you could still do turns whether on or off the throttle and get traction from both wheels.
Regardless of throttle position, the load on the engine determines the RPM. Here is another example: on a dead-axle left-drive kart, when taking a sharp left turn, the engine slows down more because the drive wheel is on the inside of the turn (lower rpm) but it goes faster on a right turn because the drive wheel is now on the outside of the turn. (higher rpm)
If you had two engines with each its own wheel, the engine on the outside of the turn will spin faster than the one on the inside of the turn. Then when you go straight, both engines are loaded equally, and will go the same speed.
