ORCA OE1 Mark IIS Competition 2S Brushless ESC

All In For Perfection.

When you're chasing every last bit of performance from your electronics, the details inside the ESC matter just as much as the settings on your programming box.

The ORCA OE1 Mark IIS Competition ESC takes the proven OE1 Mark II platform and pushes its power-stage design further with premium ultra-low internal resistance FETs, increased continuous-current capability, and an uncompromising approach to electrical efficiency.

The biggest change? ORCA has eliminated the reverse-polarity protection circuit and repurposed those FETs for additional power handling. Instead of dedicating part of the hardware to protecting against an incorrectly connected battery, the Mark IIS puts those components to work in its power-delivery architecture.

It's a deliberate tradeoff for experienced racers who understand their equipment and want every available advantage from their electronics. With upgraded FETs and a 200A continuous-current rating, the Mark IIS is engineered to deliver serious performance in a compact 2S competition ESC.

And while the hardware is the headline, the tuning capabilities are just as important. ORCA's V8.0 firmware provides extensive control over throttle response, starting force, punch, braking, PWM behavior, timing, and turbo functions, giving racers the tools to tailor power delivery to their motor, vehicle, track, and driving style.

No unnecessary compromises. No FETs sitting on the sidelines. Just a competition ESC engineered with power delivery as the priority.

Features

• Ultra-Low Resistance FETs: Premium upgraded MOSFETs designed to minimize electrical resistance and improve power-stage efficiency.
• Performance-Focused FET Architecture: Reverse-polarity protection circuit eliminated, with those FETs repurposed for additional power-handling capability.
• 200A Continuous Current: Increased current capability compared with the original OE1 Mark II.
• 760A Peak Current: High peak-current rating for demanding competition applications.
• 32-Bit Processor: Provides the processing platform for advanced ESC control and programmable settings.
• V8.0 Firmware: Extensive throttle, braking, PWM, and timing adjustments for detailed motor-control tuning.
• Adjustable 10A BEC: Selectable 6V or 7V receiver and servo power output.
• Wireless Programming Support: Compatible with the optional ORCA Bluconn module for smartphone-based configuration.
• Programming Box Support: Adjustable through an optional compatible ORCA programming device.
• ESC Data Logging: Records minimum voltage, maximum ESC temperature, maximum motor temperature, and maximum motor RPM.
• Compact Footprint: 31 x 34.75 x 19.35mm dimensions for installation in competition RC chassis.
• Detachable Power Switch: Includes a removable on/off switch.

Designed for Racers Who Want Everything

The OE1 Mark IIS isn't designed around convenience-first compromises. It's built for drivers who understand that minimizing resistance and optimizing power delivery are essential parts of a competitive electronics package.

By eliminating reverse-polarity protection and redirecting those FETs toward power handling, ORCA has made its engineering priorities clear. The Mark IIS is designed to extract more capability from its power stage, rather than reserve that hardware for connection protection.

That doesn't mean an ESC automatically makes a car faster. Gearing, motor selection, timing, temperature, traction, and throttle management still determine how effectively power reaches the track. But when the goal is to remove unnecessary electrical compromises, the Mark IIS brings the right hardware to the starting line.

Advanced V8.0 Firmware Tuning

ORCA's V8.0 firmware offers an extensive range of adjustments to help racers fine-tune power delivery for different racing conditions and motor configurations.

Throttle & Power Delivery

• Starting Force
• Punch
• Party Mode
• Party Mode Limiter
• Throttle Compress
• Variable PWM by RPM

Braking Control

• Drag Brake
• Brake Punch
• Initial Brake
• Maximum Brake Force
• Variable Brake Frequency by RPM

Additional Modified Mode Settings

• Throttle Feel
• Timing
• Timing Start and End
• Turbo Timing
• Turbo Down
• Turbo Punch
• Turbo Start
• Turbo Delay

Available settings and their permitted use depend on the selected operating mode and the rules of your racing class. Always confirm ESC settings and class legality before competition.

ESC Data Logging & Monitoring

The OE1 Mark IIS provides useful operating data to help racers evaluate their electronics setup and monitor system conditions.

• Minimum Battery Voltage
• Maximum ESC Temperature
• Maximum Motor Temperature
• Maximum Motor RPM

With the optional ORCA Bluconn OTA module, additional real-time monitoring is available, including battery voltage, ESC temperature, motor temperature, motor RPM, and throttle position.

Recommended Applications

• 1/10 Scale Electric Touring Car Racing
• 1/10 Scale Electric Off-Road Racing
• Competitive Stock and Spec Racing Where Permitted
• Competitive Modified Racing
• Other 2S Sensored Brushless RC Applications Within the ESC's Electrical and Motor Limits

Specifications

• Brand: ORCA
• Model: OE1 Mark IIS Competition ESC 2S
• Manufacturer Part Number: ES26OE1MK2S
• ESC Type: Sensored Brushless Competition ESC
• Processor: 32-Bit
• Continuous Current: 200A
• Peak Current: 760A
• Input Voltage: DC 6V-9V
• BEC: 10A, Selectable 6V / 7V
• Motor Compatibility: Sensored 540-Size Brushless Motors
• Motor Limit: 4.5T
• Dimensions: 31 x 34.75 x 19.35mm
• Weight: 43.56g Including BEC Wire
• Reverse-Polarity Protection: No
• Firmware: V8.0
• Programming: Optional ORCA Bluconn Module or Compatible Programming Card

What's Included

• ORCA OE1 Mark IIS Competition ESC 2S
• NonPolar Capacitor
• 13 AWG Wire
• 30mm Cooling Fan
• Detachable On/Off Switch
• ORCA Decals

Important Installation & Racing Information

WARNING: This ESC does not include reverse-polarity protection. Connecting the battery with reversed polarity can cause immediate and permanent damage to the ESC and potentially other connected electronics. Always verify battery connector polarity and wiring before applying power.

The removal of reverse-polarity protection is an intentional performance-focused design decision. This ESC is recommended for experienced users who are comfortable with competition RC electronics installation, wiring, and maintenance.

Use only compatible batteries, motors, and electronics within the manufacturer's published operating limits. Proper soldering, wiring, cooling, gearing, and ESC configuration are essential for safe and reliable operation.

Advanced timing, turbo, and other programmable functions may be restricted in sanctioned stock or spec racing classes. Confirm the current rules and approved equipment requirements for your racing organization before competition.