Trucks Thinking About Doing Some Upgrades To My T-maxx It Is A Pro 15

Tony is this a pretty good servo K3 Waterproof High Torque Metal Gear RC Servo motor airplane helicopter boat car


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Staff member
It's an okay servo for the price. Not the strongest or fastest, but better than the stock servo.
I was out at the other RC forum and posted want to upgrade steering servo upgrade here's what the person said about the server
so you went with something weaker and much slower... good job?


Staff member
This is your old servo specs
Modulation: Analog
Torque: 6.0V: 86.00 oz-in (6.19 kg-cm)
Speed: 6.0V: 0.20 sec/60°
Weight: 1.59 oz (45.0 g)
Dimensions: Length:1.60 in (40.6 mm)
Width:0.80 in (20.3 mm)
Height:1.43 in (36.3 mm)
Motor Type: Brushed
Gear Type: Plastic
Rotation/Support: Bushing

This is your new servo specs
- Model: k2-3620
- Metal Casing. Protect the servo motor from overheating
- Torque(4.8V): 16.5 kg-cm (229.1 oz/in)
- Torque(6.6V): 20.0 kg-cm (277.7 oz/in)
- Speed: 0.18 sec (4.8V) ¦ 0.16 sec (6.6V)
- Operating Voltage:4.8 ~ 6.6 DC Volts
- Weight: 60 g (2.12 oz)/Servo Motor
- Bearing Type:Ball Bearing x 2
- Motor Type:DC Motor

As you can see, your old servo, at 6 volts (4 AA batteries provide 6 volts. And yes, the new servo is saying 6.6 volts) you went from 86 oz/in of torque to 277 oz/in. A gain of 191 oz/in. You also went from a speed of 0.20 sec/60º to 0.16 sec/60º. So even if you compare the stock servo at 6 volts, and the new servo at 4.8 volts, you are still stronger and faster than the stock servo.

Again, those D-Bags like the one on the other forum is exactly why I created this site. I had the same experience on those sites when I first started getting into aircraft and I got tired of it very quickly. I never visit those sites anymore.


I think we all learn to ignore AHoles from time to time. I use to be very active on the Traxxas nitro sight giving lots of advice on setups and tuning years back. I Did the same on a KTM dirt bike forum time got the best of me.
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