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Send it with Sidewinder!
The all new and improved Sidewinder 4 builds upon Castle’s most popular platform - the Sidewinder 3. The Sidewinder 4 is Castle's 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.
The Sidewinder 4 is a versatile ESC that can be used in a wide variety of applications. It is available by itself our paired with Castle's 4-pole brushless motors; it can also be used in a rock crawling application with a brushed** motor down to a 19 turn.
**Not intended for operation while submerged in liquid. If unit is operated in wet conditions, rinse with fresh water to remove dirt or corrosives, then fully dry unit.
Technical Specs:
Input Voltage Range: 2s - 3s LiPo; 6 - 8 cell NiMH
BEC Specifications: 5.0 volts fixed, 2 amps.
Operating Environment: Waterproof* design allows for use in nearly any environment
Brake: Proportional
Reversible: Yes, but may be disabled for racing.
On/Off Switch: Yes
Cooling Fan: 30mm fan included
ESC Size: L: 2.08" (52.92mm) W: 1.50" (38.05mm) H: 1.28" (32.56mm)
ESC Weight (w/wires): 2.26 oz. (64 g)
Connectors: 4mm female bullets for motor connection.
Items Needed for Operation: Brushless or Brushed motor, Battery Connector required; Castle 4mm polarized connectors, Dean's Ultra Plug, or Traxxas Power Connector recommended.
Product Use Statements: *Although Sidewinder 4 is waterproof, it is not intended for operation while completely submerged in liquid. They can corrode when exposed to corrosive materials, such as salt water. Always rinse the ESC with clean water after exposure to corrosives or dirt. While the controller may be waterproof, Castle suggest users confirm that the rest of their vehicle, including the batteries, servos, radio and chassis are also waterproof before exposing them to liquids of any kind.
Application Guidelines: The Sidewinder 4 is a versatile ESC that can be used in a wide variety of applications. it can be paired with any of Castle's 14xx series 4-pole brushless motors; it can also be used in a rock crawling application with a brushed motor down to a 19 turn. Please refer to Castle's Gearing Chart for recommended motor, battery and gearing for some of the more popular vehicles on the market.
Programmability: Fully programmable Castle feature set using Castle Link USB adapter (sold separately) and freely downloadable Castle Link Windows software.
Telemetry Link Capable: Yes
Tech Notes: Not all LiPos are created equal, and surge ratings should never be used to determine a pack’s suitability for a brushless application. Use the CONTINUOUS C rating only. Brushless setups frequently hit 100+ amps in peaks. Castle strongly suggest using 5,000 mAh or larger LiPo cells with a discharge rating of at least 30C. Castle's experience suggests using only mild gear ratios with NiMH cells. Do not attempt to use NiMH cells in extreme setups.
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always happy 
