The hand grips and control details required a lot of web searching for the prototype in 1/1. It's tiny up there I know and I've seen some builds with cables running from the stock kit box parts and they look fine.
But, I couldn't let this go. I had to try and replicate this to some degree of accuracy because I admire the design of this vehicle so I wanted to make something cool with mine
thing is not included in the kit so I made one with styrene and stretched sprue
The drilling and most of the work was done before mounting them to the handle bars
The Hand Grips should be glued to the Handle Bars in a position looking more like the front box art image instead of how the I-sheets indicate.
The "brake" and "clutch" levers should point slightly inward and the whole grip part pointed slightly downward.
This will conflict with the shape of the casted parts and their joining points.
This may be the reason why Moebius didn't include a Riding figure because the loose design of the fitting of the; Foot Rests, Knee Rests, Seat, Elbow Pads, Handle Bars, and Hand Grips.
Or maybe the figure is what a lot of model builders with this kit was waiting for before they start their Bat-Pod to fit the Rider in properly
This is what I came up with using various wire, solder, stretched sprue, and reference from the internets...
notice the thumb control buttons included
another I-Sheet error alert:
When installing the Arm Guard parts (4) and (5), follow the text instructions which are correct and not the illustrated picture. The picture above clarifies this