Two-Wheel Tractor Converted To Electric Power

Two-Wheel Tractor Converted To Electric Power ENERGY Miscellaneous Reid Allaway converted a two-wheeled BCS-brand walk-behind tractor from a gasoline engine to a battery-powered electric drivetrain   A DC motor originally used in a Motrec utility cart delivers power and torque for the tractor It’s powered by a pair of battery packs made from 24-volt modules pulled from a Chevrolet Volt battery pack   A pallet truck controller regulates power delivery to the motor Allaway installed a thumb throttle and rocker switch to provide the precise control and smooth response that he says were sometimes lacking in the original configuration with the gas engine and cone-type clutch Allaway removed the clutch and fabricated an adaptor plate and shaft coupler to mate the DC motor to the BCS transmission’s input shaft and bell housing   He also eliminated the mechanical reverser opting to have the motor controller simply reverse the motor whenever reverse is needed   Gear changes of the original all-gear BCS transmission are accomplished whenever the drivetrain is stopped That’s done whenever the thumb throttle is released   The battery packs are removable and assembled inside waterproof ammo cans   A spare pair of batteries provide extended run-time as each pair of batteries lasts an hour or more Recharging takes only a couple hours with a 500W charger “Manueverability safety and precision operation are all greatly improved with the new controls ” says Allaway “and power is comparable to the original 11 hp Honda engine without any noxious fumes ” The BCS is used almost exclusively indoors in his large unheated greenhouses   For a BCS that spends most of its time outdoors the cost and complexity of the conversion probably aren’t worth it ” he says Using primarily second-hand parts Allaway figures he spent about $1 000 to $1 500 on the conversion He thinks that a conversion using all new parts might double the cost  He also warns that keeping the assembled package compact requires fastidious attention to detail and made the fabrication time consuming for a one-off project “Now that really good lithium batteries are out there and available at more and more accessible prices this kind of project can be pursued ” Allaway says   “Front to rear balance is obviously crucial for a two-wheeled tractor Battery-electric power simply wasn’t conceivable in the era of lead batteries because the machine would fall on its nose with 500 lbs of lead where I now have 50 lbs of lithium ”  Contact: FARM SHOW Followup Tourne-Sol Co-operative Farm 1025 Chemin St-Dominique les Cedres Quebec Canada J7T 1P5 ph 450 452-4271; info@fermetournesol qc ca

To read the rest of this story, download this issue below or click here to register with your account number.