| SERVO COMPARISON GUIDE |
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| Part # Description |
Size(mm) |
Torque kg.cm (6v) |
Speed in Sec 60deg at 6v |
Gears |
Ball race |
Weight grams |
Price |
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| SERVO (ANALOGUE) RUDDER CONTROL |
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| FA-S Futaba S3003 |
40x20x36 |
4.1 |
0.19 |
Nylon |
No |
37 |
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| HT-65 Hitec Mighty Feather |
24x12x24 |
2.2 |
0.11 |
Karbonite |
Single |
11 |
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| HT-311 Hitec Standard |
40x20x37 |
3.7 |
0.15 |
Nylon |
No |
43 |
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| HT-422 Hitec Deluxe |
41x20x37 |
4.1 |
0.16 |
Resin |
Dual Oilite |
46 |
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| HT-645 Hitec Ultra Torque |
41x20x38 |
9.6 |
0.20 |
Metal |
Dual |
55 |
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| JR-S7 JR Standard |
39x19x33 |
3.3 |
0.19 |
Nylon |
No |
44 |
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| JR-S9 JR Standard Hi-Torque |
39x19x33 |
4.8 |
0.19 |
Nylon |
Single |
38 |
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| SERVO (DIGITAL) RUDDER CONTROL |
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| HT-7965 Hitec High Torque |
40x20x37 |
10.4 |
0.10 |
Metal |
Dual |
62 |
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| HT-7966 Hitec High Speed |
40x20x37 |
8.0 |
0.08 |
Karbonite |
Dual |
53 |
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| S-A6 Spektrum Sport |
41x20x39 |
6.5 |
0.14 |
Nylon |
Dual |
42 |
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| SERVO (ANALOGUE) SAIL CONTROL |
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| HB-765 Hitec Sail Arm |
59x29x50 |
13.2 |
0.23 |
Karbonite |
Single |
110 |
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| HT-785 Hitec Sailwinch |
59x29x50 |
13.2 |
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Karbonite |
Dual |
100 |
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| HT-815BB Hitec Sail Arm |
66x30x57 |
24.7 |
0.14 |
Resin |
Dual |
152 |
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| Note: The difference between Analogue and Digital Servos: |
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| The motor of an Analogue servo receives a signal from the servo amplifier (inside the servo) |
| at 30 times a second. This pulsing signal tells the servo motor when to start rotating and which way to rotate. Since it only happens 30 times a second, that's the minimum reaction |
| time. |
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| Digital servos use a higher frequency amplifier that sends a signal to the servo motor 300 times a second. Since this signal is received by a digital servo's motor more often, it is able to react much faster and hold its position better. This means the servo has better centering |
| andconsiderably higher holding power. This power comes at a cost, however, as digital servos tend to draw a lot more power from the on-board battery which means your battery just won't last as long. LiPo boat battery packs extends sailing time |
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