Why the duct tape?3D ModellingIn line for next runDrive system without wheelUnder the hoodDrive system assembled
OwnerKirk Swaney
LocationAlbany, Oregon US map
Web/EmailWebPage email image
Vehicle2003 Carbon Fiber
Streamliner, designed for efficiency racing in high average-speed Electrathon competitions.
MotorBriggs and Stratton Permanent Magnet DC
Real E-Tek
DrivetrainTrue E-Tek motor, #35 Go-Cart Chain Drive with various quick-change sprockets on the motor sprocket flange. Chris King hub, non-freewheeling hub because initial set-up used a regenerative braking controller.
ControllerCurtis
Customized to 850A. However, the drive tire doesn't have the traction to actually achieve that current.
Batteries18 Enersys Cyclon cells, 2.50 Volt, Lead-Acid, AGM
At the same total weight as two red top Optimas, bench tests have measured the Cyclons to provide about the same performance as two Red tops. The main advantage of the individual Cyclon cells for this application was to place them in a tight space configuration.
System Voltage48 Volts
Charger
External adjustable "no-magic" charger
DC/DC Converter
Not required
InstrumentationOriginally an e-Meter, changed to a Cycle Analyst in 2009.
Top Speed89 MPH (143 KPH)
So far... This vehicle was designed to be efficient with the power specified above. So it's top speed run was formally confirmed in September of 2007. We had Electrathon competition from Washington that year and came out juuuuust ahead, setting the first Electrathon World Land Speed record with this machine.
AccelerationNever Timed. Traction is the issue here. It's easy to lay down a 1 block length of rubber. Luckily, these tires are cheap. It took 1st place at the Electrathon Portland International Raceway's 8th mile drags (relative to the other cars present). We suspect this was mainly due to our oversized controller.
Range45 Miles (72 Kilometers)
On a closed loop competition course with other cars, averaging speeds in the low 40's this car has hit mid 40's distance.
Seating Capacity1 adult with the top on. 2 with the top off.
Curb Weight167 Pounds (75 Kilograms)
19=carbon fiber chassis
9=top shell
67=batteries
22=motor
10=controller
Some numbers are estimates, but that leaves about 43 lbs for sprockets, chain, wheels, hubs, brakes, suspension arms(3), shocks(3) cables, steering, controls and a 5 point seat belt.

Tires100 to 110PSI, 20"x(width varies) kevlar lined Continentals or MAXXIS Hookworms
Conversion CostIf you have to ask...
Additional FeaturesOriginally ran with a 4QD 200A regenerative braking controller. Found it overheated and shut down in bench tests with a continuous 35A load using the original 24v battery system. After cooling system modifications, decided it was too under-powered to meet the demands of the 60 minute race efficiently. However, it was fun regenerating at 60 amps (instead of braking) from 60mph in the straights, down to 40mph just prior to turn one at Portland International raceway.

code by jerry