[bender]

If I remember correctly the original Yokomo 834b dogfighter had a slipper on the sprocket that drove the chain to the front gearbox - that was mid 1984.


Edit: On further research, discovered that it was the RPS Wonder Dogfighter that had the above slipper, which technically was called a torque splitter (that's what they called it on the box), but works just like a slipper.

I honestly now can't think of any car earlier than the Optima Mid....