The Sidewinder line of ESCs are our Sport-Class Surface Speed Controllers. They're designed to withstand the most abusive environments while keeping your ride moving fast and cool. They may not have sensors, but they have loads of Castle Power!
Don't know which speed control you need? Check out our Getting Started page.
Sidewinder Nano
We are thrilled to add a performance upgrade solution to the ever-growing micro-scale phenomenon in R/C. The SIDEWINDER NANO may be small in stature, but it’s colossal in power and includes our proprietary CRYO-DRIVE™ Technology resulting in improved thermal performance during partial throttle operation where the majority of driving occurs. The Sidewinder Nano is ready-to-run out of the box but can also be “tuned” for the drivers’ preferences using a Windows® based PC and a Castle Link USB adapter (sold separately) , or with a mobile device using Castle B-Link Bluetooth® Adapter (sold separately).
Sidewinder 4 - Sensorless
The Sidewinder 4 is our first platform running Cryo-Drive technology which reduces operating temperatures in all applications. Cryo-Drive is a potent combination of software enhancements and precision fluid dynamics. The new case is designed specifically for maximum airflow from the huge 30mm fan included with the Sidewinder 4. These changes result in cooler ESC temperatures, increased runtime and power handling. All of these improvements mean you can gear more aggressively for more speed and harder/longer runs. And of course it is still waterproof** and compatible with the optional Castle Link USB programmer.
Sidewinder 3 - sensorless
Sidewinder 3 is the perfect waterproof* ESC for 1:10 scale off-road, on-road, and rock crawlers running up to 3S LiPo**. It sports updated circuitry for faster response time and improved reliability. The Sidewinder 3 can run 540 (36mm) sensorless brushless motors or brushed motors down to a 19 turn.
Sidewinder SCT Edition - sensorless combo
Sidewinder SCT is Castle’s solution for anyone who needs an unbeatable combination of power and affordability in a special edition controller and motor combo made for Short Course Truck racing. Intended for short course trucks running on 2s LiPo and weighing up to 6.5 lbs. It is also a great system and a torque animal for lighter 1/10th scale 2WD stadium trucks and buggies running up to a 3s LiPo. The Sidewinder SCT Combo will give you exceptional response and performance right of the box!
Sidewinder 8th - sensorless combo
Sidewinder 8th is our sport 1:8 scale waterproof* combo capable of 2-6S LiPo, with an 8 amp peak BEC. This is the perfect upgrade for 1:8 scale buggies, truggies and on-road vehicles as well as 1:10 scale monster trucks weighing up to 11 lbs. It can also work as a great upgrade for some 4WD short course trucks for 3s or 4s operation. It also comes standard with a highly efficient ESC cooling fan.
This combo includes the Sidewinder 8th ESC and our 1515-2200Kv sensored motor. The Sidewinder 8 requires running in sensorless mode with this motor.