
No Superior Designs RC RS1 Monster Torque Brushless Servo (High Voltage)
About this part
No Superior Designs RS1 Monster Torque High Voltage Brushless Servo. Designed specifically to be one of the strongest, fastest, and most durable BEC powered servo on the market! The RS1 is built using top quality materials and designed for the power and speed needed for today's competition level. One of the most notable features of the RS1 servo is the industry leading 5-gear and 4-pole design. With the reduction of the 5-gears, durability and precision have been dramatically increased over the standard 4-gear design! Get this monster performing BEC powered servo and experience the power of the RS1!
NOTE:
- Requires a Castle 10 amp BEC or better. Low amp output ESC will not power this monster servo sufficiently and may not function properly.
- For use with Spektrum receivers it is recommended to use a receiver bypass harness. Some Spektrum receivers cannot handle higher amp draw and will fail and can cause damage to the servo.
Features:
- Hardened stainless steel gears
- Black anodized all CNC-machined aluminum Case
- Water resistant
- 11-Point O-ring seal
- High quality 4-pole brushless motor
- Dual ball bearings design
- High voltage (HV) capable
- Capable of full 180 degree rotation
Specifications:
- Type: Standard
- Motor Type: Brushless
- Operating Voltage: 5V - 8.4V
- Gears: Hardened Stainless Steel
- Spline: 25T
- Dimension (LxWxH): 40x38.7x20mm
- Weight: 89g
- Case: CNC-Machined Aluminum
- Torque:
- 6V: 900oz/ 64kg
- 7.4V: 1100oz/ 79kg
- 8.4V: 1200oz/ 87kg
- Speed:
- 6V: 0.14 sec/60°
- 7.4V: 0.11 sec/60°
- 8.4V: 0.09 sec/60°
Includes:
- (1) RS1 Monster Torque Brushless Servo
- (1) 25T CNC-Machined Aluminum horn
- Multiple composite horns
- Mounting screws, bushing and rubber grommets
Reviews4.3 · 22 reviews
The majority of the NSDRC product reviews are fake. All their products have reviews that are unverified, submitted around 6/1/2024, and from the same group of people. Open any two NSDRC products and compare the reviews to confirm.
garbage. Ran 2 times and failed. No steering assembly issue, no receiver issue. No crashes. Just an apparent total failure in the electric circuits of the servo.
? 1/5 — THREE NSDRC RS1 SERVOS FAILED — I’M DONE WITH THEM I wanted to like the NSDRC RS1. On paper, it’s supposed to be an absolute monster—huge torque, brushless power, metal construction, and the kind of premium servo you’d expect to put into an expensive RC build and forget about. Unfortunately, my experience has been the complete opposite. I’ve now had THREE NSDRC RS1 SERVOS FAIL. Not one. Not two. Three. The final straw was installing a brand-new RS1 and having it fail after roughly FOUR MINUTES of driving. At this price point, that’s completely unacceptable. I’ve gone through the setup looking for other explanations—power, endpoints, steering linkage, binding, receiver setup, and swapping components during troubleshooting. At this point, after three RS1 failures, I have absolutely no confidence left in these servos. One of my RS1s developed an especially ridiculous failure: it started spinning continuously through 360 degrees and wouldn’t stop. I disconnected it from the receiver and powered the servo separately, and it still continued spinning. After opening it, I found the position sensor/potentiometer visibly cracked and damaged. That tells the story for me. You can advertise enormous torque numbers, but what good is monster torque if I can’t trust the servo to survive? This is exactly why I switched to REEFS RC 1100 servos. And here’s the part that really sealed my opinion: I’ve already made the switch to REEFS 1100 servos and now have OVER 10 HOURS of runtime on them with ZERO problems. Same type of demanding RC use. Same expectation for serious steering power. The difference is that the REEFS servos have simply been doing their job. No failures. No runaway 360-degree spinning. No position problems. No tearing a nearly new servo apart trying to figure out what broke. Over 10 hours and counting without an issue. That’s what I expect when I’m paying premium-servo money. I didn’t want to replace the RS1 with something significantly weaker just to gain reliability. I still wanted ridiculous steering power. That’s why the REEFS 1100 made sense for me—it gives me the monster-torque performance I’m looking for while getting me away from a servo platform that I’ve completely lost confidence in. At this level, I’m not interested in winning a spec-sheet competition. I want POWER + RELIABILITY. After THREE RS1 FAILURES, including a brand-new one lasting approximately four minutes, compared with 10+ hours on my REEFS 1100 servos without a single problem, I know which one I’m trusting my builds with. To be fair, I’m not claiming every RS1 made is defective. Plenty of people may have great luck with them. This review is based specifically on my own experience with three different RS1 servos. But three failures are more than enough for me. One failure can be bad luck. Two failures start raising serious questions. THREE failures, followed by 10+ trouble-free hours after switching brands? I’m done. For the amount of money these servos cost, I expect dramatically better reliability. I shouldn’t be tearing apart premium servos looking for cracked sensors. I shouldn’t have a servo endlessly spinning. And I definitely shouldn’t install a brand-new replacement and have it fail within minutes. The strongest servo in the world isn’t worth anything to me if I can’t trust it. I’ve already switched to REEFS 1100 servos, they’re performing exactly how I expect a premium servo to perform, and I have no intention of going back. After my experience, I cannot recommend the NSDRC RS1, and I will not purchase another one. ? 1/5
Pricey Servo but worth every penny. Insanely powerful servo. Direct power with CC 10Amp BEC and has plenty of power and torque for my Axial SCX110 III Crawler.
This thing is an absolute power house ! Great for 4ws rigs!
Reviewers broadly praise the RS1's torque and speed, especially in crawlers, trail rigs and heavier trucks, and several say it performs well with BEC power. Some describe it as good value, while others call it pricey. Several verified owners report electronic failures after short use, including one who reports three units failing and another who reports failure after a few laps. One reviewer alleges that the brand's reviews are unverified and coordinated, which this summary cannot confirm. Reviews are mixed on reliability, with the failure reports conflicting with the many positive experiences. Feedback covers the High Voltage variant.
- + High torque and strong steering
- + Fast response in crawlers and trail rigs
- + Suitable for BEC-powered builds
- + Good braking performance reported
- − Multiple reports of electronic failure
- − Short-lived operation in some reports
- − Premium price noted by some buyers
- − Reliability concerns about the review base