Do you have schematics for that little contraption?
I don’t have a “schematic” but it's a pretty simple setup and REAL easy to hook up. It was also SUPER STRONG. I know from experience it will hold tight in a 35 MPH jack-knife. Didn't do the front apron or the right front fender any good, but the bar stayed in place. After looking it over real good, I just hopped back in the truck and drove off.
Here's how it works. There are two pieces of channel iron (4" wide if I remember correctly) cut to a length that will allow them to sit in the pocket above the big holes in the deformation plate. In the center of these pieces there is a bolt (can't remember the size right off the bat, but it was a standard bolt that uses a 3/4" wrench) through a hole in the plate, tightened down with a nut on the other side and both the nut and bolt were welded to the channel iron.
You drop the channel iron pieces in the pocket above the hole in the deformation plate with the bolt hanging down.
The cross piece of the tow bar is made from a piece of angle iron with a square block welded in each end. On the top flat side of the angle iron there are two holes drilled. The whole angle iron piece rotates on a bolt through the tow bar arms and a hold in the square block on the ends of the angle iron.
You slide the bar under the front of the car, lift it up and put the bolts hanging down from the deformation plate through the holes in the angle iron, run a nut up tight from the bottom and then put a jam nut on them for good measure. You could drill a hole through the bolt and stick some kind of pin in there to keep the nut from backing out, but a nut and jam nut never failed for me. I used this thing many times. Worked like a charm and it was built from scrap in about 30 minutes by a friend of mine. 20 minutes of that was dedicated to “engineering.” I’ve used the store bought Super Beetle tow bars . . . they are weak and hard to hook up compared to this one.
Anyway, if there isn’t a deformation plate with holes in it behind the apron, this bar wouldn’t work on a type 3 . . . but if you ever need to tow a Super . . .
Here's a couple more pictures:
And here is the Super after the jack-knife incident (this happened near the end of 125 miles of interstate towing which included Monteagle). The bumper of my truck took out the headlight and fender, the bar warp up the apron, but nothing stucturally bent on the bar or the Super Beetle.
