RW-3x

The team's return to conquer Pikes Peak

The name RW-3x seems as though it would be a bike that had a marginal improvement over RW-3, and although that was originally the plan, it turned into much, much more. RW-3 had many new challenges taken on by the team as they made their debut showing at Pike’s Peak International Hill Climb. Finishing 2nd in their class and 16th overall, the team wanted more.  

RW-3x started as improvements to limiting factors in RW-3, but as design and implementation went on, it became a task of creating new designs instead on modified previous ones. What resulted was a new battery pack, a redesigned cooling system, and an adjustable offset suspension among other changes. As a result, powertrain temperatures were well beneath the limits over the entire course, and the bike delivered full power across the finish line. The battery pack stayed cool the entire time, and the bike crossed the line with around 10% charge left in the tank. 

At the race, RW-3x was the fifth vehicle to go up the mountain in the morning. When on the course, the top section was very wet and muddy. The rider, Rob Barber, was running race slicks and could not push the bike hard in this technical and dangerous section of the course. Considering these environmental limitations, the bike satisfied many goals. It ran a time of 11:16 up the mountain, coming in 3rd in the electric motorcycle class and 14th overall. 

Peak Torque

Peak Power

Pack Energy

Chassis
Structure:
Frame Honda CBR1000RR
Swingarm Honda CBR100RR
Front Suspension 58 mm Marzocchi
Rear Suspension 120 mm Nitron R3 Race
Aero:
Fairing Design Custom
Fairing Composition Carbon Fiber

Powertrain
Motor:
Manufacturer Enstroj
Model EMRAX 268MV
Peak Power 200 kW
Continuous Power 75 kW
Peak Torque 500 Nm
Continuous Torque 250 Nm
Weight 20.3 kg
Inverter:
Manufacturer Tritium
Model Wavesculptor 200
Max Voltage 450 VDC
Max Current 300 ARMS
Peak Power 165 kW
Continuous Power 107 kW
Weight 8.5 kg
Battery Pack:
Cell Format 26650 Cylindrical
Peak Pack Voltage 480 VDC
Pack Energy 7.7 kWh
Cell Chemistry LFP / Graphite
Weight 70.4 kg 

 

Electronics
BMS:
Battery Management System designed in-house
Based on the Texas Instruments BQ76PL536
Measures up to 24 cell voltages and temperature
Control System:
System controlled using a custom Magic CAN Node (MCN)
Based on the Texas Instrument C2000 Microcontroller
Uses two isolated busses for datalogging and controls

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