Though I'd agree it's good practice to disengage the drive shaft, I've towed a 120 well over a hundred miles without any ill effect on the transmission.

We had a great system going, I was driving the 164 doing the towing, the 122 was on a rope. When I started going too fast for the guy driving the 122 he'd flash the headlights. I started off at 30MPH and crept up to 45 or so. He flashed the headlights. I slowed down and cradually crept up to 50 or so and he flashed me. This went on for awhile. I decided to take the motorway to get to Birmingham.

I deduced his courage was hardening for we were cruising happily at 70 to 75 MPH (obviously I went no faster than that 'cos it'd be dangerous)

When we got to Birmingham he was shaking, angry, and slightly white round the gills. Some clown had fitted extra lights to the 122 and put an inline fuse in the headlight circuit, it had blown.

When we looked at why the 122 had stopped running the same genius mechanic that had wired the headlights has left the bolts on the rocker shaft loose, which had losened even further resulting in non opening valves. Took all of 30 seconds to fix after all that.

Happy days' I use trailers nowadays.

Regards


Pete