Speaking of the 8N, I recall years ago many of us, (yes me included) got in the habit of coming to a stop to open a gate etc, and stepped down on the clutch and quickly flip the gear shift into neutral and step off the tractor,.."letting the clutch up as you jumped off".
It was "usually" in neutral, but I watched a buddy do that and he hadn't quite got into neutral. His one foot hit the ground as the other let the clutch pedal up,...you got it! Yep, she lurched ahead the big tire caught his heal and pulled him down and ran right up his body and slid off the side of his head. The reason it "slid" off was because the fence post stopped the tractor but the driving wheel kept turning and skidded off his head!!!
Of course like so many, he jumped right up,...and dropped quickly in a painful heap! After some time in hospital he eventually recovered. I don't know about others, but I personally NEVER, EVER was in such a hurry to open a gate etc again!!!
CHEERS!
. . tug
PS: ....that was in the mid-1950's,..and the vision comes to me today like it was yesterday!!! If "you" do it, ...PLEASE DON'T!! Good thing the tires weren't loaded!! Saddly, this was just one more of my personally witnessed tragedies which have become hard learned lessons that I NEVER forget!!