The beam is designed to be moved, there is a "rail" just behind the front bulkhead. the tapered shape and pins that extend from the front of the beam locate in the rails (housing). The beam is then set at an angle, pointing upwards to the rear.....similar to a crane.
The hoops front and rear have special brackets to secure the beam.
I made the master for this, so have info and photo's. Luke made the original master for the chassis, Graham at Resicast made the tilt assembly, as I originally made this to show the internals.
You can email me at
georgemoore66@hotmail followed by .co.uk, if you need any more.
George