Ah... so we are not completely in the darkThe different fwd/rev motor speeds may be that the brushes are rotated with respect to the field windings, often a design choice.
Wrapping up what we have achieved
Motor control panel
As you can see... I fitted the resistor onto it's heat dissipating aluminium bracket
... and then fitted the bracket to it's natural place, only...
The plug flex would tend to lay on the resistor, which is not great.
It means that it will need a flex guide, if I keep the resistor in this position.
(it's a typical prototyping error.... you can never think of everything, until it's done, and then.....)
Battery Charger - Motor PSU
This shows the mounting of the 1st capacitor, and wiring into the output
Motor Switch Panel
I hear what you say Tom, re the RBV.
Subjectively, the motor seemed to run better - I swapped it in and out a few times.
Anyway I kept it, and mounted it on an aluminium heat sink, with an alloy plate on top, to further improve heat dissipation.
Heat paste was also used.
The 2nd capacitor was kept because, again subjectively, the motor seemed to run marginally better.
The capacitors run cool... I could barely feel any warmth
... as a result, I've tie-wrapped it in place... it was simply convenient.
The 5A fuse is between the RBV +ve and the main switch.
I need to tidy the exposed connectors... but it's pretty much there.
Last main job is to bridge the switches.
Very pleased with it.