Doug gives these construction details:
"The frame is built using an American Line brass
motor bracket.These are still available thru your local track but only if
your local track owner will take the time to get them from his distributor.
To my knowledge Eagle and REH still have 'em. They may also be available at
some online slot sites."
"Actually the inner rail on each side of the frame is one piece of .062"
steel wire bent into a long squared off "U" shape. It starts up at the front
axle, goes back past the end of the motor bracket on one side of the frame,
takes a 90 degree bend, goes the width of the motor bracket, makes another
90 degree bend, goes back under the other side of the motor bracket and then
back up the other side of the frame to the front axle tube. This is where
the motor bracket is mainly soldered to the frame. This provides the main
structural strength for the entire frame."
"Another, much shorter "U" shaped
.062" wire is silver soldered within the side walls of the motor bracket
down to the steel rail I just described at the back of the chassis. This
further enhances the structutal strength of the motor bracket, not only for
the gear mesh but for rear end collisions as well. All other .062" brass rod
frame rails are simply bent and cut to length and shape and silver soldered
in place. Spacing between all rails is 1/16"."
"I built 'em back then and wish I could have done as good a job. Of course,
I was in junior high back then, as many guys were, and my skills have matured
over the years. At least I have better tools now."