I would like to have some response based upon below idée, the sketch is about to show a gearbox device for my newly acquired second hand 750W Bosch engine. According to the motor maker the engine output is about 3300 rpm. it is little to fast for direct connection to the wheel. The initial plan during my hopeless struggle was to have another second hand heavy duty planetary gear, however the planetary gearbox has lots of metal fragments inside it is basically broken or it should definitely be destroyed during frequently use.
Next on the list: How-to make your own gearbox, I have chosen spur gears, they are ok price vice, sound level would be ok if I'm using z1 + z2 > 60. I will try to mount in axels as stiff as possible. There shall be one bearing one each side of the gears. The assembly would be in a aluminum housing and as I understand that the housing must be carefully made by keeping the axial distance within a few hundred of millimeters. I'm lucky to know a guy that have a small mechanical workshop. Else I do not think it is possible to be within required axial distances. So any comments to this setup?
To-Do before EV take off: Battery 100% Charger 100% Engine 100% Controller 40% Gearbox 10% EV Frame ?%