Freedom EV

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Freedom EV is an open source hardware electric vehicle designed by the EVProduction club. It is a 3-wheeler "tadpole" EV with 2 steerable front wheels, 1 driven rear wheel, and 2 side-by-side seats.

Contents 1 Latest Progress 2 Business strategy 3 Specifications 3.1 Dimensions 3.2 Weight 3.3 Estimated Performance 4 Subsystems 4.1 Tires 4.2 Brakes 4.3 Motor 4.4 Controller 4.5 Suspension 4.6 Steering 4.7 Batteries 4.8 Body 4.9 Interior & accessories 4.10 External links

[edit] Latest Progress

Oct 2007 - Body and chassis are mated together. Door and window openings are cut out. Suspension is being designed and fitted.

Aug 2006 - Chassis mold finished, and prototype chassis produced from this mold.

July 2005 - Jerry has finished the male mold and sent it to the glass shop to build the production tooling.

Sept 2005 - The production molds, tooling have been finished and the first body is being started. New pics under latest progress.

[edit] Business strategy

Start with 20 beta units to get processes correct and production running smoothly, then go full production with small factories around the US and Canada as needed

[edit] Specifications

[edit] Dimensions

• height 55"
• width 60"
• length 133"
• wheelbase 95"
• tread (front) 56"
• turning radius (?)
• ground clearance 7"

[edit] Weight

• empty 550 lbs
• payload 500 lbs max
• batteries 750 lbs max
• GVWR 1800 lbs

[edit] Estimated Performance

• top speed 80 mph
• acceleration 0-30 mph  ?
• acceleration 0-60 mph  ?
• time, 1/4-mile ?
• range at constant 30 mph 125 miles
• range at constant 60 mph 90 miles

[edit] Subsystems

These are not all decided yet; choices here are the current favorites. Links on each item go to pages with more options and information involved in the decision process.

[edit] Tires

• front 155/80R14 radial, 22.8" diameter
• rear 155/80R14 radial, 22.8" diameter

[edit] Brakes

• front Drum
• rear Drum

[edit] Motor

• type, series DC; quantity 2 D+D ES-22 6.7" motors

[edit] Controller

• DC 450 amp PWM controller

[edit] Suspension

• front double unequal length A arms, air adjustable shock absorbers)
• rear trailing arm, Gates Polychain belt drive to motor

[edit] Steering

• type rack and pinion

[edit] Batteries

• type (twelve 6v flooded golf cart batteries, Trojan T-105 or equivalent?)
• battery box 36" wide x 45" long x 12" high

[edit] Body

• composite one-piece body/chassis
• 3 doors

[edit] Interior & accessories

• seats 2, side-by-side buckets 48" wide cabin
• heater
• air conditioner, Electric

[edit] External links

• EVProduction wiki.