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RF250 Radial Flux · FD400 inverter · rebuilt Type 2 091
149 kW / 200 hp
Peak motor power at 350 Vdc, about 5,000 rpm
330 Nm / 243 lb-ft
Motor peak torque · 60 s from 65 °C · 400 A rms
A real four-speed manual, clutch and shift lever.
RF250 Radial Flux · FD400 inverter · rebuilt Type 2 091
RF250 motor, FD400 inverter, and a freshly rebuilt, zero-mile VW Type 2 091 transaxle. Complete clutch assembly included; assembled at Formosa EV and ready to install.
Features and technical dataThe RF250-VW091 Manual Drive Unit combines the RF250 Radial Flux motor, FD400 inverter, Formosa EV adapter plate, starter cover, and a freshly rebuilt, zero-mile VW Type 2 091 transaxle. A complete clutch assembly is included; assembled at Formosa EV and ready to install.
Machined interface and fasteners
Motor-to-transaxle adapter interface
RF250 motor, FD400 inverter, adapter plate, starter cover, and freshly rebuilt transaxle, plus flywheel, friction disc, pressure plate, and conventional release bearing. Ships fully assembled.
Fits any air-cooled VW running a Type 2 091 transaxle. Stock transaxle mounting, conventional clutch, and shift lever; no driveline fabrication or starter motor needed.
149 kW peak at 350 Vdc, about 5,000 rpm; 330 Nm for 60 s from 65 °C at 400 A rms. Motor component ratings.
One motor-and-inverter loop: 50/50 water–ethylene glycol, at least 15 L/min, maximum inlet 60 °C. IP67 motor and inverter.
4.571 final drive as supplied; alternate 4.86, 5.14, 5.43, 5.50 and 5.83 ratios are available.
Motor / Inverter / Integration
The separate FD400 inverter controls the RF250 motor.
The FD400 is preconfigured. Plan mounting, high-voltage connections, and coolant routing with Formosa EV; pair it with high-voltage cables and low-voltage harnesses made to your measurements.
IP67 · Liquid cooled · CAN
Motor and inverter figures are component ratings. Complete assembly weight includes the FD400; the measured drive-unit envelope excludes it.
Motor peak power
149 kW (200 hp) at 350 Vdc, about 5,000 rpm
Motor peak torque
330 Nm (243 lb-ft), 60 s from 65 °C at 400 A rms
Maximum motor speed
15,000 rpm
Motor peak torque density
About 79 Nm/L
Peak motor efficiency
97.45%
Motor type
Hairpin-wound PMSM, water-cooled
Motor weight
49 kg (108 lb), motor only
Motor geometry
288 mm overall length; 220 mm stator OD (11.3 / 8.7 in)
Motor protection
IP67; insulation class H; −40 to +85 °C
Inverter capacity
164 kVA peak / 82 kVA continuous
Inverter current
400 A rms peak (1 min); 200 A continuous
Inverter operating voltage
250–450 Vdc
Inverter efficiency
≥98% at rated conditions
Inverter weight
10 kg (22 lb)
Inverter dimensions
369 × 285 × 115 mm (14.5 × 11.2 × 4.5 in), excluding connectors
Inverter protection/control
IP67; liquid cooled; CAN
Transaxle
Freshly rebuilt, zero-mile VW Type 2 091 four-speed
Gear ratios, as supplied
3.80 / 2.06 / 1.26 / 0.889; reverse 3.79
Final drive, as supplied
4.571
Cooling
Motor + inverter: 50/50 water–ethylene glycol; ≥15 L/min; max inlet 60 °C
Complete assembly weight
106 kg (234 lb), including FD400
Complete assembly envelope
1003 × 362 × 381 mm (39.5 × 14.25 × 15 in), excluding FD400
Fits any air-cooled VW running a Type 2 091 transaxle.
Formosa EV configures the battery for your drive system. Pair the unit with high-voltage cables and low-voltage harnesses made to your measurements.
Use stock transaxle mounting; no driveline fabrication or starter motor is needed. Allow separate space for the FD400.
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