Servo Comparison Guide

                                                             SERVO COMPARISON GUIDE
Part #         Description Size(mm) Torque kg.cm (6v) Speed in Sec 60deg  at 6v    Gears Ball race Weight grams    Price Micro Magic   Sail  control
SERVO (ANALOGUE) RUDDER CONTROL              
FA-S  Futaba S3003 40x20x36 4.1 0.19 Nylon No 37 $20.50 Yes
                 
HT-65  Hitec Mighty Feather 24x12x24 2.2 0.11 Karbonite Single 11 $36.50 No
HT-311 Hitec Standard 40x20x37 3.7 0.15 Nylon No 43 $17.30 Yes
HT-422 Hitec Deluxe 41x20x37 4.1 0.16 Resin Dual Oilite 46 $20.75 Yes
HT-645 Hitec Ultra Torque 41x20x38 9.6 0.20 Metal Dual 55 $54.00 No
                 
JR-S7 JR Standard 39x19x33 3.3 0.19 Nylon No 44 $19.95 Yes
JR-S9 JR Standard Hi-Torque 39x19x33 4.8 0.19 Nylon Single 38 $25.00 Yes
SERVO (DIGITAL) RUDDER CONTROL              
HT-7965 Hitec High Torque 40x20x37 10.4 0.10 Metal Dual 62 $139.80 No
HT-7966 Hitec High Speed 40x20x37 8.0 0.08 Karbonite Dual 53 $145.95 No
                 
S-A6 Spektrum Sport 41x20x39 6.5 0.14 Nylon Dual 42 $36.95 Yes
SERVO (ANALOGUE) SAIL CONTROL              
HB-765 Hitec Sail Arm 59x29x50 13.2 0.23 Karbonite Single 110 $61.25 No
HT-785 Hitec Sailwinch 59x29x50 13.2   Karbonite Dual 100 $49.40 No
HT-815BB Hitec Sail Arm 66x30x57 24.7 0.14 Resin Dual 152 $52.00 No
Note: The difference between Analogue and Digital Servos:
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. 
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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