Thank you. Apparently, we have already seen these in his pictures. But they look like they are stock gears. I do not see any extra weight added to them. Am I wrong?
If I needed more flywheel effect, I'd try a 4 x 80mm (or whatever) machined tungsten disk on the motor shaft, along with a custom aluminum spacer from Cometic Gaskets to space out the cover as needed. Tungsten is strong and super heavy, the added motor rpm & gear reduction will increase the disk's RW flywheel effect , and installation should be lighter & much easier than welding up the driven gear. The 4 x 110mm disk I had made for my ICE crankshaft made a huge difference.
Lyndon sold those heavy flywheels to the guy/team that bought all his spares. He had two, I tried to buy one of them. They were definitely different than the stock setup.