Having picked up my new trailer, my twin towbar setup was not ideal. Reading the comments that 2"(50.8mm) towball would fit 50mm tow hitch proved to be incorrect- at least on this new trailer.
I asked around if any engineering company would turn down the ball on a lathe or milling machine to 50mm, non were available to do it quickly.
So I set about with a hand file and worked my way around the tow ball. It took at least 8 passes to reduce the diameter to 49.8mm. I was careful to maintain roundness and measured with calipers to keep it round all within 0.1mm
I marked the ball with marker pen to see where I had worked the metal
Job done, nice tight fit in the tow hitch
I asked around if any engineering company would turn down the ball on a lathe or milling machine to 50mm, non were available to do it quickly.
So I set about with a hand file and worked my way around the tow ball. It took at least 8 passes to reduce the diameter to 49.8mm. I was careful to maintain roundness and measured with calipers to keep it round all within 0.1mm
I marked the ball with marker pen to see where I had worked the metal
Job done, nice tight fit in the tow hitch