Try that thread:
3 Ton Derrick
You may be talking of cross purposes here as the true derrick truck had a detachable boom that attached to the rear of the body and could come apart and store in the rear body, with a winch mounted on the body floor behind the cab. This did not slew but was rigid. These were originally 134inch wheelbase C60S or F60S chassis.
here is a model of it I made.
The second was more a mini crane on the back of a truck.
I do have a few official pics of the fixed boom one here that have been put up on MLU before but I am not sure where.
__________________
Cheers
Cliff Hutchings
aka MrRoo S.I.R.
"and on the 8th day he made trucks so that man, made on the 7th day, had shelter when woman threw him out for the night"
MrRoo says "TRUCKS ROOLE"
