OwnerEric Roy
LocationYelm, Washington United States map
Email email image
Vehicle1983 Grumman Kurbwatt
Grumman Olsen
MotorGeneral Electric 5bt1346b51 Series Wound DC
23 hp 99.4 volt
DrivetrainVW 5 speed transmission
ControllerCurtis 1221?
84-120volt 400amp
Batteries16 NAPA 284, 6.00 Volt, Lead-Acid, Flooded
System Voltage96 Volts
Just a big transformer with a full bridge rectafier
DC/DC ConverterCurtis
Top Speed50 MPH (80 KPH)
AccelerationGood acceleration till 40 mph. Then slowly kreeps to 50 mph
Range50 Miles (80 Kilometers)
Factory said 50 mile range for 84 volts. So far at 96 volts I did 45 miles when travelling at 45 miles per hour.
Seating Capacity2 adults
Curb Weight2,500 Pounds (1,136 Kilograms)
Additional FeaturesAll aluminum body and it has a solar charging system on the roof which looks like it's charging the main battery pack. I'm hoping for some one to let me know more about this little Grumman. It's a really neat little van.

code by jerry