There you can see the gearbox bell housing, which would normally surround the clutch and flywheel. We're not needing either, but the bell housing is cast as part of the gearbox so we have to work with it. Simple enough - slap a metal plate across the front with suitable mounting points for the motor. The devil is in the detail of course - the first problem being how to replicate the outline to cut the plate so that it fits neatly.
I decided to try tracing the outline onto a sheet of cardboard, and use a hammer to tap through the dowels so that they are replicated precisely (like making a gasket).
Then somehow get it into the computer.
Just like magic! Or Tron, possibly.
The unusual castelated detail on the front of the motor can also be cut in to the plate, centred on the driveshaft, so that it just slots in and clamps up easily and accurately.
