Poor Little Cone Style

I've used both in my many years on mother earth. They both are capable units when both are in good working order.
The down side to a cone unit is, when the cones wear to the point that they start to touch bottom in the two case halves, they no longer will lock up. Hence one wheel starts to spin more than the other. When this happens the two small spider gears start rotating around the axle that is holding. These two small spiders were never intended to spin that much, especially when hammering down on the throttle. The result is devastating. The spiders seize to the shaft followed by the cross shaft breaking/ripping the small .250 x 1" dowel pin. You wind up with a trashed case and the a pair of welded to the cross shaft spider gears that you can't buy anywhere. I was talking to a man I think he was from Australia that was attempting to have these gear manufactured by a shop there but the cost wound up being to much. If you have a clutch unit and you wear the clutches out generally they are rebuild-able. This is my experience with the both.