Hello Everyone, I am interested in getting some feedback and opinions on a project I have designing a 4 wheel drive buggy. The application is pretty specific and i would like it to meet the following: - max speed 30-40kms/hr - weight 800kgs - mainly operates at 0-15kms/hr - only runs 5mins max at a time and about 1hour per day - 50hp ICE engine. My main goal is to design something that removes gearboxes, clutches, driveshafts, brakes that existing atv, side by side buggies have, as it is in very corrisive enviroment and when operating is under load all the time (on sand and no coasting) and these do not stand up to application. I have considered electric but like the idea if hydraulic, I realise all the efficiencies, high speed issues with this. At the moment i am thinking either two (one each axel) or four motors (one each wheel) and would like opinions on following obstacles: 1. parrallel or series or switchable for two speed 2. best way to differentiate motor speeds for turning, spinning wheel 3. braking options using motors 4. starting or low rev torque of specific motors types 5. also considering running HP accumulator to compensate fir load flucuations. I can work out gearing, motor sizing, pressures etc. Thanks for your time and interest and appreciate any feedback or opinions.