I have a 2 seater Dingo and would like to add reverse. I noticed there are basically 2 different aftermarket gearboxes available, one comes with shifter and 5/8" shaft for driven clutch usually around 200 bucks. How do these stand up, are they weak and prone to break down? The other style are a planetary gear originally used on ATV and some Manco karts usually around 130 bucks. I can t find any details though, what style/size shafts do they use, do they stand up well? Another interesting Idea I came across was a guy welded a sprocket onto an electric winch and mounted the whole thing onto a hinged plate, when lowered the sprocket meshes into final drive chain and provides reverse, its on youtube under
https://www.youtube.com/watch?v=mmq-mzF_MbY&t=13s pretty clever but no info about how effective it works.