| Dec 28, 2017, 11:10 AM |
| Jim T. |
Jim T. Shining a light on the hobby.  Thread OP | 6 Servos that Won't Disappoint - Servo City !Servos to Know I realized very quickly in my RC hobby that your servos better work! Years later I have piles of servos from planes that found their "expiration date." After all this time I still check RCGroups.com to make sure I'm using an adequate servo for my application. Here is a story from Servo City that goes over 6 servos and their uses. I have added the specs of each servo and descriptions in the photos for even more info... !!From Servo City !"Which servo should I use for my project?" This is a question we are asked on a daily basis. The answer depends on your application and numerous other factors. Here is a short list of go-to's among the hundreds of servos we offer. Price, performance or even uniqueness all play a part. Let's take a closer look.... !HS-485HB This servo is designed with long-lasting Karbonite gears and a ball-bearing supported output shaft to reduce friction. Excellent performance at an entry level price. @10610113 - Dimensions 1.57" x 0.78" x 1.49" (39.88 x 19.81 x 37.85mm)
- Product Weight 1.59oz (45g)
- Output Shaft Style 24 tooth (C1) spline
- Voltage Range 4.8V - 6.0V
- No-Load Speed (4.8V) 0.22sec/60°
- No-Load Speed (6.0V) 0.18sec/60°
- Stall Torque (4.8V) 66.6 oz/in. (4.8kg.cm)
- Stall Torque (6.0V) 83.3 oz/in. (6.0kg.cm)
- Max PWM Signal Range (Standard) 553-2425μsec
- Travel per µs (out of box) .102°/μsec
- Max Travel (out of box) 190.5°
- Pulse Amplitude 3-5V
- Operating Temperature -20°C to +60°C
- Current Drain - idle (4.8V) 8mA
- Current Drain - idle (6.0V) 8.8mA
- Current Drain - no-load (4.8V) 150mA
- Current Drain - no-load (6V) 180mA
- Continuous Rotation Modifiable Yes
- Direction w/ Increasing PWM Signal Clockwise
- Deadband Width 8µs
- Motor Type 3 Pole Ferrite
- Potentiometer Drive Indirect Drive
- Feedback Style 5KΩ Potentiometer
- Output Shaft Support Top Ball Bearing, Bottom Bushing
- Gear Type Straight Cut Spur
- Gear Material Karbonite
- Wire Length 11.81" (300mm)
- Wire Gauge 25AWG
!HS-645MG The powerful HS-645MG is the highest torque standard size analog servo offered by Hitec. Utilizes metal gears for high-impact applications. @10610101 - Dimensions 1.59" x 0.77"x 1.48" (40.6 x 19.8 x 37.8mm)
- Product Weight 1.94oz. (55.2g)
- Output Shaft Style 24 tooth (C1) spline
- Voltage Range 4.8V - 6.0V
- No-Load Speed (4.8V) 0.24sec/60°
- No-Load Speed (6.0V) 0.20sec/60°
- Stall Torque (4.8V) 106.93 oz/in. (7.7kg.cm)
- Stall Torque (6.0V) 133.31 oz/in. (9.6kg.cm)
- Max PWM Signal Range (Standard) 553-2520μsec
- Travel per µs (out of box) .100°/μsec
- Max Travel (out of box) 197°
- Pulse Amplitude 3-5V
- Operating Temperature -20°C to +60°C
- Current Drain - idle (4.8V) 8.8mA
- Current Drain - idle (6.0V) 9.1mA
- Current Drain - no-load (4.8V) 350mA
- Current Drain - no-load (6V) 450mA
- Continuous Rotation Modifiable Yes
- Direction w/ Increasing PWM Signal Clockwise
- Deadband Width 8µs
- Motor Type 3 Pole Ferrite
- Potentiometer Drive Indirect Drive
- Feedback Style 5KΩ Potentiometer
- Output Shaft Support Dual Ball Bearings
- Gear Type Straight Cut Spur
- Gear Material 3 Metal Gears and 1 Resin Metal Gear
- Wire Length 11.81" (300mm)
- Wire Gauge 22AWG
!HS-785HB The HS-785HB servo is unique due to its ability to rotate nearly eight rotations while retaining positioning feedback! @10610114 - Dimensions 2.32" x 1.14"x 1.96" (59 x 29 x 50mm)
- Product Weight 3.88 oz.. (110g)
- Output Shaft Style 24 tooth (C1) spline
- Voltage Range 4.8V - 6.0V
- No-Load Speed (4.8V) 1.68sec/360°
- No-Load Speed (6.0V) 1.4sec/360°
- Stall Torque (4.8V) 152.75 oz/in. (11kg.cm)
- Stall Torque (6.0V) 183 oz/in. (13.2kg.cm)
- Max PWM Signal Range (Standard) 600-2400μsec
- Travel per µs (out of box) 1.57°
- Max Travel (out of box) 2826°
- Pulse Amplitude 3-5V
- Operating Temperature -20°C to +60°C
- Current Drain - idle (4.8V) 8mA/
- Current Drain - idle (6.0V) 8.7m
- Current Drain - no-load (4.8V) 230mA
- Current Drain - no-load (6V) 285mA
- Continuous Rotation Modifiable Yes
- Direction w/ Increasing PWM Signal Clockwise
- Deadband Width 8µs
- Motor Type 3 Pole Ferrite
- Potentiometer Drive Indirect Drive
- Feedback Style 5KΩ Potentiometer
- Output Shaft Support Dual Ball Bearings
- Gear Type Straight Cut Spur
- Gear Material Karbonite
- Wire Length 11.81" (300mm)
- Wire Gauge 22AWG
!HS-805MG The HS-805MG servo is the beefed up version of the legendary 805BB monster servo! Designed with metal gears and 343 oz-in of torque. @10610115 - Dimensions 2.59" x 1.18"x 2.26" (66 x 30 x 57.6mm)
- Product Weight 6.95 oz. (197g)
- Output Shaft Style 15 tooth (D1) spline
- Voltage Range 4.8V - 6.0V
- No-Load Speed (4.8V) 0.19sec/60°
- No-Load Speed (6.0V) 0.14sec/60°
- Stall Torque (4.8V) 274.96 oz/in. (19.8kg.cm)
- Stall Torque (6.0V) 343.01 oz/in. (24.7kg.cm)
- Max PWM Signal Range (Standard) 553-2455μsec
- Travel per µs (out of box) .105°/μsec
- Max Travel (out of box) 199.5°
- Pulse Amplitude 3-5V
- Operating Temperature -20°C to +60°C
- Current Drain - idle (4.8V) 8mA
- Current Drain - idle (6.0V) 8.7mA
- Current Drain - no-load (4.8V) 700mA
- Current Drain - no-load (6V) 830mA
- Continuous Rotation Modifiable Yes
- Direction w/ Increasing PWM Signal Clockwise
- Deadband Width 8µs
- Motor Type 3 Pole Ferrite
- Potentiometer Drive Indirect Drive
- Feedback Style 5KΩ Potentiometer
- Output Shaft Support Dual Ball Bearings
- Gear Type Straight Cut Spur
- Gear Material 4 Heavy Duty Metal Gears & 1 Nylon Gear
- Wire Length 11.81" (300mm)
- Wire Gauge 22AWG
!HSR-2645CRH The standard size servo with continuous rotation. Its linear, proportional speed control makes this an excellent choice for compact camera control setups. @10610118 - Dimensions 1.59" x 0.77" x 1.48" (40.6 x 19.8 x 37.8 mm)
- Product Weight 1.87 oz (53 g)
- Output Shaft Style 24 tooth (C1) spline
- Voltage Range 4.8 - 7.4 V
- No-Load Speed (4.8V) 46 RPM
- No-Load Speed (6.0V) 58 RPM
- No-Load Speed (7.4V) 72 RPM
- Stall Torque (4.8V) 111.09 oz-in (8 kg-cm)
- Stall Torque (6.0V) 138.87 oz-in (10 kg-cm)
- Stall Torque (7.4V) 166.64 oz-in (12 kg-cm)
- Pulse Amplitude 3-5 V
- Operating Temperature -20°C to +60°C
- Direction w/ Increasing PWM Signal Clockwise
- Motor Type Carbon Brushed Cored Motor
- Potentiometer Drive No Potentiometer
- Feedback Style This servo does not have position feedback
- Output Shaft Support Dual Ball Bearings
- Gear Type Straight Cut Spur
- Gear Material Metal
- Wire Length 25 AWG
!HSB-9380TH This servo is a brushless beast! It's Neu brushless motor, titanium gears and low current consumption provide tremendous durability and longer run-times between charges. @10610128 - Dimensions 1.57” x 0.79” x 1.50” (40 x 20 x 38mm)
- Product Weight 2.4oz (68g)
- Output Shaft Style 25 tooth (H25T) spline
- Voltage Range 6.0V - 7.4V
- No-Load Speed (6.0V) 0.17 sec/60°
- No-Load Speed (7.4V) 0.14 sec/60°
- Stall Torque (6.0V) 472 oz/in. (34 kg.cm)
- Stall Torque (7.4V) 472 oz/in. (34 kg.cm)
- Max PWM Signal Range (Standard) 700-2300μsec
- Travel per µs (out of box) .075°/μsec
- Max Travel (out of box) 120°
- Pulse Amplitude 3-5V
- Operating Temperature -20°C to +60°C
- Continuous Rotation Modifiable Yes
- Direction w/ Increasing PWM Signal Clockwise
- Deadband Width 2µs
- Motor Type Brushless
- Feedback Style 5KΩ Potentiometer
- Output Shaft Support Dual Ball Bearings
- Gear Type Straight Cut Spur
- Gear Material Titanium (Hybrid MPD 1st Gear)
- Wire Length 11.81" (300mm)
- Wire Gauge 20AWG
!Visit Servo City You can find the perfect servo for your project at Servo City. Images View all Images in thread -
 Views: 11 -
 Views: 68 It’s the perfect choice for those larger sport planes or monster trucks and buggies requiring a durable high torque servo. Featuring their unique M/P and metal gear train technology, the HS-645MG offers one of the strongest gear trains available. -
 Views: 5 -
 Views: 51 The HS-485HB updates the very popular HS-475HB by adding more torque and greater speed. With its top ball bearing, heavy duty, high impact Karbonite gears and high performance circuitry, the HS-485HB offers lots of torque and features excellent centering. -
 Views: 54 HS-785HB (left) shown with a standard size servo. While most servos are limited to approximately 180 degrees absolute max, the HS-785HB can rotate just over 8 turns given the proper PWM signal range. -
 Views: 47 The metal geartrain makes the HS-805MG an excellent candidate for steering 1/5 Scale vehcles and driving control surfaces on large scale models. -
 Views: 53 The HSR-2645CRH servo rotates at a specific speed based on that signal. Its speed is fully proportional meaning that the further the signal deviates from the center (1500usec), the faster the servo will rotate. -
 Views: 54 The HSB-93XX series of servos is the perfect match for the most discriminating pilots and racers. |
| Dec 28, 2017, 11:25 AM |
| ronin4740 |
ronin4740 Wandering IT geek  | The last set of Hitech servos (HS225BBs) I purchased had horrible centering issues. Might have been okay for a big trainer but was certainly not for a Q500 pylon racer. I replaced them with another brand and solved the issue. Perhaps I just got four bad ones... |
| Dec 28, 2017, 01:09 PM |
| Rhea |
Rhea Recreational Model Plane Pilot  | Most servos one might expect a Beginner to use would be in the 9g range. |
| Dec 28, 2017, 04:33 PM |
| mawz |
| mawz Sagitta Fanboy | Quote: | Originally Posted by Rhea Most servos one might expect a Beginner to use would be in the 9g range. | Unless of course they're using a standard trainer, which will take standard-sized servos (although more likely to be HS-311's or HS-422's than the monsters in this list) |
| Jan 10, 2018, 04:33 AM |
| Pippin |
| Pippin Registered User | Deadband Width 8µs will definitely disappoint you! |
| Jan 10, 2018, 05:10 AM |
| fille_swe |
| fille_swe Registered User | Quote: | Originally Posted by Pippin Deadband Width 8µs will definitely disappoint you! | Pippin how does that affect the servo? I bought a bunch of the 485hb. but i had some small movement in all of them. it was a grinding noise that occured evry few second. Later i decided to read up about the 485hb and i found out that it was not uncommon that people had failures with these servos. I decided to not use them and replaced them with other servos. Next time i will search for info before i buy a new typ of servo and not just look at specs and price. |
| Jan 11, 2018, 12:10 AM |
| autodidact |
| autodidact Registered User | Meh, on these larger servos. Most Hitec servos IMO are just not that good. The HS 82MG and the 225 are horrible. Sloppy and they fail. The 645MG and HS81 are pretty solid and their big winner is of course the 65MG. Now that is a great servo. The rest, not so much. For the bigger stuff, I use and trust Futaba and JR. |
| Jan 11, 2018, 06:40 AM |
| RC Man |
| RC Man A man with too many toys | I have had good results from the larger servos but not the saller ones (HS-65 and smaller). I don;t use anything smaller than HS-85 from Hitec. My main complaint is the value. Most Chinese servos are excellent at a much lower price. Why is Hitec so much more expensive than other Chinese brands? . |
| Jan 11, 2018, 02:00 PM |
| Bare |
| Bare Registered User | The above infomercial is a Sure sign that Hitec is suffering. |
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