Ha ha, yes indeed CB, it's amazing what can happen when one starts trying out fitting junk together
And Silverbear I must agree with you about the possibilities that exist with using the rear halves of standard bicycle frames and not bothering with conventional tricycle rear axles.
I would like to build a motorwheel for my 70 year old Hercules bicycle using this method with a Villiers engine to power it which would look very nice as well as being practical, but that will have to wait for later.
All my electric trikes have had divided drive with the left hand side rear wheel driven by the pedals and the right hand rear wheel under motor power. Yes there is a slight twitchiness under power, but that can be compensated for by sensible use of the pedals. This is where the Sachs automatic kick back hub I normally use very much comes into its own because it will shift up as you accelerate from a stop.
I suppose the divided drive arrangement just looks a whole lot more obvious now because there is an engine in plain sight on the right hand side.
For one heady moment I did consider adding a Sturmey Archer 3 speed hub as a countershaft transmission into the mix, but then I decided that it would be better to get everything working properly first and keep such experiments for later.
Two engines? - now that would be a sight
However I shall be sensible and stick with using just the one. In practical terms though another engine on the left hand side would be a nuisance as that's the side that I mount and dismount from my tricycle and an engine being in the way could lead to unladylike bad language.
Like you CB I'm going to keep this slightly disguised China Girl completely stock as I'm not interested in speed and seeing how fast it will go. My trikes are workhorses and get used to haul stuff so reliability is what I want.