Inquisitor
100 µW
- Joined
- Aug 17, 2012
- Messages
- 9
I would like to introduce my project and goals. Soylent Green is a minimalistic commuter EV to be built relatively cheaply. I know it would be far easier to take a donor vehicle and convert it, but an important aspect of the project is my enjoyment of the design and building process and just figuring out things. I’m fortunate in that my job is only seven miles away in an area that is relatively flat. Basically, I can ride a bike to work (and have) but the traffic is very bad all the time and I feel like I’m taking my life in my hands every time I try it. So without further explanation…
· A minimal weight and price vehicle
· Reverse Trike configuration
· Carries two people occasionally
· 45 mph top speed
· Enclosed for aerodynamics and keep out the rain
· one hour duration or approximately 20 mile range
I’ve started accumulating some of the hardware necessary and running numbers. I currently have…
· the motor 130 Volts, 10 Amp which claims to put out 2.5 horsepower continuous. I’m hoping for closer to 4hp for short periods.
· I’m going to use a microprocessor (Arduino) for many things, including motor controller, tachometer, speedometer, BMS, temperature sensors, and charge controller and anything else I can think of along the way. Here it is bread boarded to control and LCD screen and as a tachometer. Its showing the motor at 37 Volts running at 1248 rpm.
· The rear wheel, tire, brake disk, brake caliper, rear sprocket, bearings, spacers and axle
· Front suspension off a Honda ATV which includes brake disks and calipers
I’m not really an artist, being more of an engineer so I’m showing the guts first and will do the “artist impressions” later once I’m on a roll. Here is the first cut at the chassis and suspension system. At the moment, it is not fully triangulated around the passenger compartment and is not intended to be fully representative. I plan to start doing some Finite Element Analysis in the next couple of days to fully analyze the structure. But I want to see how weak this minimal, first cut is.
Cost and Weight summary.
Item, Cost, Weight (lbs), Notes
Motor, $50, 15.8, 130 V, 10 Amp, 2.5 Hp
Full front suspension, $162, 28.5, Includes brakes
Front wheels and tires, TBD, 30.0, Not found yet
Rear wheel, $80, 20.5, Tire, brakes and misc.
Microprocessor, $20, 0.1, and misc. electronic parts
Rear suspension, ?, 4.3, Steel tubing already had
Minimal chassis, ?, 30.4, Steel tubing already have most
Totals $312, 129.6 lbs, More to come.
· A minimal weight and price vehicle
· Reverse Trike configuration
· Carries two people occasionally
· 45 mph top speed
· Enclosed for aerodynamics and keep out the rain
· one hour duration or approximately 20 mile range
I’ve started accumulating some of the hardware necessary and running numbers. I currently have…
· the motor 130 Volts, 10 Amp which claims to put out 2.5 horsepower continuous. I’m hoping for closer to 4hp for short periods.
· I’m going to use a microprocessor (Arduino) for many things, including motor controller, tachometer, speedometer, BMS, temperature sensors, and charge controller and anything else I can think of along the way. Here it is bread boarded to control and LCD screen and as a tachometer. Its showing the motor at 37 Volts running at 1248 rpm.
· The rear wheel, tire, brake disk, brake caliper, rear sprocket, bearings, spacers and axle
· Front suspension off a Honda ATV which includes brake disks and calipers
I’m not really an artist, being more of an engineer so I’m showing the guts first and will do the “artist impressions” later once I’m on a roll. Here is the first cut at the chassis and suspension system. At the moment, it is not fully triangulated around the passenger compartment and is not intended to be fully representative. I plan to start doing some Finite Element Analysis in the next couple of days to fully analyze the structure. But I want to see how weak this minimal, first cut is.
Cost and Weight summary.
Item, Cost, Weight (lbs), Notes
Motor, $50, 15.8, 130 V, 10 Amp, 2.5 Hp
Full front suspension, $162, 28.5, Includes brakes
Front wheels and tires, TBD, 30.0, Not found yet
Rear wheel, $80, 20.5, Tire, brakes and misc.
Microprocessor, $20, 0.1, and misc. electronic parts
Rear suspension, ?, 4.3, Steel tubing already had
Minimal chassis, ?, 30.4, Steel tubing already have most
Totals $312, 129.6 lbs, More to come.