Your outside wheels pivot on the ends for you jack shaft lifting the rear of the kart. You have what I assume are 2 rotational supports nearer the centre rotating arm. One is linked to the jack shaft and the other is linked to a bracket added on the left hand side rear, just in front of the axle cassette bearing. So my question is why did you do it that way? You could have had both connected to the jack shaft or mirrored the bracket on the right had side. Im sure it would work both ways so is just because you needed to mount a chain tensioner sprocket for the longer main drive chain? Fantastic build by the way. Im trying to make one for myself only a 72v electric version in either a 3000w or 6000w configuration.
I started to build a motorized drift trike a few months ago. I was quiet happy for building it, just before hit your channel. Dam! What the hell am i building if it isn't like that? I guess many people around the world would like to have a piece of that. Would you share or sell the solidworks project? The link you posted is not working from my country (Brazil), don't know why. Thanks a lot.