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Home > MOTORS & ESC > Brushless Motors > Turbo Ace 81220 Brushless Motor: HP08-4G3, Exceptionally High Performance Thermo-Cool BL Motor, 20T Pinion Installed for 4G3
Turbo Ace 81220 Brushless Motor: HP08-4G3, Exceptionally High Performance Thermo-Cool BL Motor, 20T Pinion Installed for 4G3
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Price: The 81220 has been replaced by the Turbo Ace 71318
Out of stock
Part Number: MT-81220-4G3 + Screws
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Why buy HP08-2 from Wow Hobbies ? Turbo Ace motors are designed to Wow's specifications and they are Quality-Assured when we receive them. We are equipped with special motor testing instruments to assure you the best performance possible for your heli. We will not ship you motors that does not meet our specifications.
The HP08-2 is a version of the HP-08 custom to Wow Hobbies' specifications: Caution: not all HP08 are created equal !
Pinion is installed and balanced.
For a precise balance of the head when operating with this high torque motor, we recommend the optional Stay-True CNC rotor head.
Newest video of 4G6 with the latest Turbo Ace 81220 HP08-2 brushless outrunner motor. This video is done on the 4G6 as we don't have a video ready for the 4G3 which the motor performance is similar to the 4G6.
Important Instruction: The Turbo Ace 81220 (HP08-2) is optimized when the 3 wires from the motor are soldered directly to the Walkera main ESC. By doing so, the motor will run stronger, less likely to cog and will not stall during startup. Directly soldering the wires to the ESC will result in shorter wires and no contact points. This type of installation is a little inconvenient for maintenance since you can not unplug the motor as easily but it reduces the resistance of the current from the ESC to the motor allowing the motor to operate at its optimum state. If the motor runs in a reverse direction, just unsolder any 2 wires, switch them and solder them back to the ESC. Please remember to discard the wires and the connector from the ESC. Thou this motor is the same as the 81220-4G6, the depth of the pinion is different, it has been adjusted to fit the 4G3. If you have a 4G6, you need to order the 81220-4G6 with the proper pinion depth for the 4G6. Turbo Ace and other outrunner motors starts better with 4#3B, CB100 ESC which have more suitable timing for the outrunners. If you own a CB100 or 4#3B, it is not a bad idea to swap your CB100/4#3B ESC with your 4#6/4G6 ESC. If you own a programmable radio WK2801, please make sure your throttle curve for the stunt mod is set to 100%, 100%, 100% all the way accross for ultimate performance. Use this setting for all high performance Turbo Ace outrunners, do not use this setting for the stock Walkera motor as it will overheat and burn out.
High performance HP06, HP08 or Turbo Ace 31714 motors requires high discharge rate 20C batteries. For a selection of these batteries go to
The newest Thermo cool Turbo Ace 81220-4G3 (HP08-2 With 20T Pinion) outrunner brushless motor for the Walkera 4G3 with more torque and lighter weight than the stock Walkera BL motor. Outrunner motors have inherantly higher mass moments of inertia and linear momentum that offers extra punch and prevents stalls. Like a car with more horse power the 81220 enables faster acceleration. Like a world class gymnast, a lighter aircraft is also more nimble and responsive. You can say linear momenutum is beneficial inside the motor but not in your over all flight mass.
Operating at 120 degrees, the 81220 temperature is 15 degrees cooler than 4G3 stock brushless motor. Premature bearing failure are often associated with exccesive heat and ineffecient use of battery power. The 81220 provides exceptional lifespan and extended flight time. There is no longer any fear that your motor will burn out because you didn't wait long enough for it to cool off between flights.
Motor type: Outrunner
Operating temperature: 110F compare to 125F on the Walker HM-4G3 BL motor
Kv: 11,600
Weight: including wires- without connector: 8.3g
Weight: including wires- with connector: 8.6g
ESC Compatibility: When the motor wires are soldered directly to the ESC, the motor will startup with 99% of the Walkera 4G3 ESC. Avoid use connector as it increases the resistance from the motor to the ESC
Pinion: Walker compatible 20 teeth pinion fully installed and adjusted for the 4G3
Motor screws: Included
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