These are some of Hitec servos that I looked at:
| Size | Speed
(Time/60° (s)) |
Torque (Kg.cm) | Price
(US$) |
Bang per buck (Torque/Time/Price) | |
|---|---|---|---|---|---|
| Analog | |||||
| HS-475HB | Standard | 0.23 | 4.4 | 15 | 1.3 |
| HS-645MG | Standard | 0.24 | 7.7 | 34 | 0.9 |
| HS-985MG | Standard | 0.16 | 9.6 | 58 | 1.0 |
| HS-755HB | 1/4 | 0.28 | 11.0 | 25 | 1.6 |
| HS-805BB | Mega 1/4 | 0.19 | 19.8 | 34 | 3.1 |
| Digital | |||||
|
HS-5085MG |
Micro | 0.17 | 3.6 | 41 | 0.5 |
|
HS-5645MG |
Standard | 0.23 | 10.3 | 48 | 0.9 |
For standard size analog servo, the HS-985MG performs best. It is based on a coreless motor. It provides the highest torque as well as the fastest speed.
The HS-475HB is the best value servo. It has the advantage of using Karbonite (just like kryptonite 🙂 ) gears. Karbonite is supposed to be stronger than nylon but has less wear and tear compared to metal.
The HS-645MG has good torque compromise without being overly expensive. It uses mostly metal gear.
For a mega 1/4 scale servo. The HS-805BB looks awesome.