We've had a lot of questions about the 60" Able
sleepers are VERY rare.  Although Able Body is still
in business, they no longer have any parts
available for these sleepers, nor does the Mack
parts network.  

According to Able Body, they estimated that
approximately 5000 of the 60" stand-up R-model
sleepers were made, including all of the Superliner
Liberty and Magnum edition trucks.  The sleepers
are constructed of aluminum panel riveted onto a
cast aluminum frame, and are very heavy.  Because
of the cast aluminum frame, the use of single or
dual exhaust  was determined at the time of sleeper
construction.  It was impractical, if not impossible
to convert at a later date.

The earliest 60" sleepers (as you see in the movie)
had side doors that were oriented to the rear of the
sleeper.  Later production, sometime around '79,
put the doors centered on the side between the
rear wall and the exhaust cut-out.   

To save everyone time and trouble contacting the
Mack Museum, the 60" Able Body Sleeper was NOT
available from the Mack factory on the R Western
models.  The 60" did not become available for
factory install until the Superliner RW models in
1978.  The sleepers on the Rubber Duck trucks
were installed after-market.

In an effort to help those building scale models,
we've taken dimensions from our 60" Able Body
sleeper and put them into a crude drawing.  The
drawing IS NOT to scale, although the dimensions
are exact measurements from the real sleeper.
Modeler Information
Sleeper and Trailer Dimensions
trailers were used to transport hot liquid asphalt.  For the movie, the prop crew removed
the trailer's steel inner tank and constructed falsework to support the aluminum outer skin.  
One of the two trailers was destroyed in the final bridge scene.  This trailer is the lone
survivor.  Note the damage that was sustained to the right side hose storage tray and
ladder from the jail crash scene in Alverez, TX (Estancia, NM).  

The original wheels and tires were 10x22 steel tube type wheels and tires.  The steel
wheels were originally 10 hole "Budd" style disc wheels with 6 hand holes per wheel.  As
we rebuild the trailer, we are going to use 11R22.5 tubeless wheels with 5 hand holes per
wheel.