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Description
KAVAN R-50SB Plus brushless ESC SBEC 50AKAVAN R 50SB Plus brushless ESC SBEC 50A New generation of programmable micro processor electronic speed controllers KAVAN Plus for brushless sensorless motors designed using the latest achievements of the semiconductor technologies ensuring high performance; whilst still being simple to use user friendly. The Plus line ESCs will work great in any of Sunday flyer sporty model planes powered by brushless motors using LiPo Li ion LiFe as well as NiCd
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KAVAN R-50SB Plus brushless ESC SBEC 50A
New generation of programmable micro processor electronic speed controllers KAVAN Plus for brushless sensorless motors designed using the latest achievements of the semiconductor technologies ensuring high performance; whilst still being simple-to-use/user friendly. The Plus line ESCs will work great in any of „Sunday flyer“/sporty model planes powered by brushless motors using LiPo/Li-ion/LiFe as well as NiCd/NiMH batteries. The ESC features a powerful switched UBEC ensuring reliable power supply for your receiver and servos. The optional KAVAN LED programming card PRO (sold separately; the same as for the KAVAN PRO ESC line) will make the programming of your ESC a breeze.
FEATURES
- The ESC features a high performance 32-bit micro processor ARM M4 with a running frequency of up to 96 MHz.
- DEO (Driving Efficiency Optimization) Technology greatly improving throttle response & driving efficiency and reducing the working ESC temperature.
- Suitable for the most of aeroplane model dedicated brushless motors for 3-4S LiPo batteries.
- Compatible with NiCd, NiMH, LiPo, Li-ion, LiFe batteries
- Powerful switched UBEC stabilizer 5.0 V up to 5 A.
- Adjustable timing to match your motor perfectly.
- Adjustable voltage protection with selectable cut-of type (soft cut-off/hard cut-off).
- Start-up Modes Normal/Soft/Very Soft to match direct drive as well geared power systems
- Start-up protection prevents unintentional start of the motor when powered up.
- A number of protection functions: start-up protection, ESC thermal protection, capacitor thermal protection, overload protection, over current protection, abnormal input voltage protection, throttle signal loss protection contributing to safety operation.
- Throttle range calibration to match your radio set signal.
PROGRAMMABLE FUNCTIONS
- Brake Type: Normal brake off, Normal brake on (3 brake force levels selectable), Reverse brake (the forward/reverse run is selected by an auxiliary channel with 2-position switch on your transmitter, the revolutions are controlled by the throttle stick, Linear reverse brake (the reverse revolutions are controlled by a proportional control assigned to an auxiliary channel on your transmitter)
- Brake Force: Brake force adjustable to 60%/90%/100% (Normal brake mode only).
- Voltage Cut-off Type: Soft Cut-off: After selected this option, the ESC will gradually reduce the output to 60% of the full power in 3 seconds after the low-voltage cut-off protection is activated. Hard Cut-off: The ESC will immediately cut off the output.
- LiPo Cells: The ESC will automatically calculate the number of LiPo cells you have plugged in as per the “3.7V/Cell” rule if “Auto Calc.” is selected, or you can set this item manually.
- Cut-off Voltage: If set off, the low-voltage protection function is disabled. If on, the protection voltage threshold is selectable at 2.8V/cell, 3.0V/cell or 3.4V/cell.
- Start-up Mode: This is used to adjust the throttle response time of ESC acceleration from 0% to 100%. Normal/Soft/Very Soft correspond to approximately 200 ms/500 ms/800 ms respectively.
- Timing: Adjustable to 5°/15°/25°.
- Active Freewheeling (DEO): This item is adjustable between “Enabled” and “Disabled”, and it is enabled by default. With it enabled, you can have better throttle linearity or smoother throttle response.
- Search Mode: After selected this option, ESC will drive the motor chirping prompt when the throttle is kept at 0% and continues to do during the set time.
PROTECTIVE FUNCTIONS
- Start-up Protection: The ESC will monitor the motor speed during the start-up process. When the speed stops increasing or the speed increase is not stable, the ESC will take it as a start-up failure. At that time, if the throttle amount is less than 15%, the ESC will try to restart automatically; if it is larger than 20%, you need to move the throttle stick back to the bottom position first and then restart the ESC.
- ESC Thermal Protection: The ESC will gradually reduce the output to 60% but won’t cut it off when the ESC temperature goes above 120°C (soft cut-off mode)/the ESC will shut the motor off (hard cut-off mode).
- Throttle Signal Loss Protection: When the ESC detects loss of signal for over 0.25 second, it will cut off the output immediately. The ESC will resume the corresponding output after normal signals are received.
- Overload Protection: The ESC will cut off the power/output or automatically restart itself when the load suddenly increases to a very high value.
- Low Voltage protection: When the battery voltage is lower than the cut-off voltage set by the ESC, the ESC will trigger the low-voltage protection. If the battery voltage is set to soft cut-off, the battery voltage will be reduced to a maximum of 60% of the full power. When set to hard cut-off, the output is cut-off immediately.
- Abnormal input voltage protection: When the battery voltage is not within the input voltage range supported by the ESC, the ESC will trigger the Abnormal input voltage protection, ESC will drive the motor to sound the alarm.
Tip: Turning the ESC on for the first time: Perform the throttle range calibration following the instruction in the manual. Only then you can use the ESC normally or you can set the programmable parameters using your transmitter or the KAVAN LED programming card PRO.
Used for Aeroplane Type AC Constant current [A] 50 Max. peak current [A] 70 NiXX cells 8 - 12 LiXX cells 3 - 4 BEC voltage [V] 5 BEC current [A] 5 Length [mm] 60 Width [mm] 25 Height [mm] 8 Weight [g] 36 Control one-way Brake Yes Sensor imputs No Programmable Yes
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 3
requirement: scan codes & down load proprietary app to set up & use all the functions of the unit
SPECS
The printer weighs 39.19 pounds. Overall it is 22.625 x 17.5 x 12.03125 inches. The output tray extender sticks out 5.875 inches from the unit. The usable power cord length is 59.5 inches.
The unit can use legal [B00006GNXZ], letter [B0B57CKBCT], or ledger [B0017LR3M4] size paper.
The control panel tilts up and is a color touch screen. The display is 2.125 x 1.625 inches. The unit has two sided coping, scanning, and printing. There is a document feeder on the top.
The home screen has menu, copy, scan, trays, supplies, jobs, and help as the main functions. Firmware updates can be set to automatic, notify, or disabled. The printer does not come with a user manual.
OVERVIEW
The unit comes wrapped in a plastic bag that has handles on each side. I was able to easily lift the printer up myself using the handles and took it to the desk.
The printer is missing some key features that do not make the printer cost effective. There is only one print tray. A fold out rear tray vertical tray is not even there. Having to constantly change paper size is an extreme inconvenience. There is no USB port to be able to print from or scan documents to a USB hard drive or directly from a camera, which is a disadvantage.
In addition, to utilize all the features a code needs to be scanned and or the H P app needs to be used. I did not like having to scan a code to set up and connect to wireless connection as well as using any of the scan features of email, network folder, computer, and share point, which makes the scan option useless. I had to download the HP app to set up the printer. When I was done I deleted the app. I do not want numerous apps on my devices.
I found not having a manual for the unit to be a disadvantage.
This is not a user friendly printer with all the code and app requirements. Using the web address on my laptop and phone, just gave me a link to the play store to download the app again, which I did not want.
The size of the display screen is small. At times I had to touch the menu button more than one time to get it to continue to the next screen.
The unit functioned well printing and scanning. I was able to print from the computer via wireless connection without using the app. The copy function does not require the app or show a code to scan to be able to continue.
The document feeder allows for quick copying and scanning, which is an advantage. The rollers did grab a one sheet copy job crooked and the copy was askew on the page which is a disadvantage. On best, the copy did not come out any better than normal. The copy images were a poor representation of the original. The copy images were more pix elated making them not as complete and crisp. In addition, the single color grey images were very pale and could barely be seen.
I did not sign up for HP instant ink, compatibility. I also disabled firmware updates.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Easy set-up, high quality prints, beautiful design!
This sleek and modern print/copy station has every feature you could ever need. With an easy set-up and user friendly interface and endless ink supply, this device exponentially enhances work-flow reduces technological headaches for good!
Let's be real. My old printer had been a great work-horse for many years. Unfortunately as I upgraded my computer setup and phone, it was no longer syncing appropriately and had become a manual, troubleshooting headache! I was having to print the "even" pages on auto handling, then flip them by hand to print the "odd" pages with normal handling, then re-order appropriately. Not only this, but the cartridge price for my old device had risen to $30 per cartridge and I was constantly needing to replace and go through the pain of a slow, manual alignment process. Something needed to change. And that is when the HP OfficeJet Pro stepped in.
The setup was an absolute dream. The provided QR code takes you directly to a setup slide-show that walks you through each step one at a time (I've posted a few screen-shots of the interface). Everything worked smoothly and as intended. I especially appreciated the speedy, automatic alignment. Once set-up was complete, I was able to effortlessly connect through all of my devices and print! The quality of the print was crisp, high quality and each page was ready lickety-split. The only con I could possibly note is that it isn't the most quiet printer I've ever used. If you need something whisper quiet, you may need to look at something else or move the printer to a more appropriate location.
Once set up, I created an account and signed up for the subscription-based ink refills, which I think is a really ingenious idea. I actually chatted in with an HP representative regarding this (they were easy to get a hold of) to further clarify how it works. In a nutshell, you decide how many pages you anticipate printing in a month and you pay for that amount if ink. There is a sensor chip in the ink cartridge that lets HP know when youre about to run out of ink and they'll send you more...regardless if where you're at in your subscription. So, if I didnt quite use my 100 pages worth of ink, it wont bill my next month or send ink until I'm ready. This works out to be one heck of a deal. All told, 100 pages will only cost 7.99 rather than my usual 30 (or 60 if you count both ink and color).
On top of functionality, this is also a beautiful piece of office equipment. I adore the soft white tone of the unit, which looks both uplifting and peaceful in my work area. Its the little things, I swear. Not only does it look peaceful, but it has taken extra stress off of my plate by being so easy to work with. Plus I don't have to add ink to my shopping list anymore! I think you'll find this unit to be well worth your while, and if its anything like my old HP printers, it's hopefully going to last a good handful of years!
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Incredible image quality even when enlarged to full capacity
The quality and reliability of HP OfficeJet printers is unmatched, from my experience. I use this printer for regular everyday things like return labels and printing out documents but my favorite thing to use it for are art and design projects. I am able to copy an image and enlarge it up to 400%, or minimize its size to 25% which is an incredible range and perfect for design and art projects. As long as the ink cartridges are all at full capacity my images always come out flawless, even when I enlarge them huge. As long as I send an image in the right format or copy from a hard copy image it is always clear and crisp, not pixalized. Our craft room/office is in the basement and I am easily able to print from my kitchen or bedroom from my phone or laptop which is very convenient. The array of functions, the quality of the image, and the bright beautiful rich colors this printer is able to produce is really great if you plan to use it for design or art. I have never had a paper jam, which is very impressive considering I am always changing to photo paper as well as multiple different sized paper. I just received this printer but the HP printer I was using before still works like a charm and is close to 20 years old, if you are using this for your home I can't imagine having to replace it. My absolute favorite part is a 4 pack of extra large ink is $47.99 which is almost half of what my other printers ink cost. The wide format and large paper size I am able to print on has made our art projects really beautiful and uniform, rather than having to try to hide the seams of multiple pages taped together. Incredible product.
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Reviewed in the United States on May 22, 2026
★★★★★ 1
Pray you don't need HP Support to set up printer
HP Support is the absolute worst.
If you have any setup issues with your HP printer, you're on your own. Their support is practically useless.
I’ve been on a two-hour call trying to get wireless printing working. I’ve been transferred to three different people, and none of them knew how to help. Now I’m stuck on indefinite hold (over 30 minutes and counting) with no resolution in sight.
I can print fine with a USB cable, but it simply will not print wirelessly no matter what we try.
Extremely disappointed and frustrated with HP right now.
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Very capable large format color inkjet printer
This thing is big. It’s replacing our Brother color laser, which didn’t get a lot of use (but is great for quick and cheap prints).
The HP is longer in one dimension but less tall, so is roughly occupying the same space but with more wall visible (so looks less intrusive).
Heavy. I could (and did) lift it on my own but all the packing and instructions say for 2 people to lift it. It’s manageable but I see why there’s that warning.
Build quality is mostly plastic but sturdy enough for a static object. Scan lid opens easily, trays extend smoothly etc. Feels well build overall, no concerns.
You can download installation instructions using a QR code and it’ll guide you to also install the HP app. The app ideally requires an account, mandatory if you plan to free trial the Instant Ink I think.
I had an existing old HP account and used that. The setup was way enough but there’s a weird UI step in the app during pairing where the setup modal is blank grey with a greyed out “Next” button. Looks like it can’t find the printer. Wrong! Just hit Next to proceed. Weird and stupid and I wasted time figuring it out. Loses a star for that.
Other than that, setup went fine and test print came out decent. WiFi connected ok and it also has Ethernet. The Brother only has WiFi but is flaky / goes to deep sleep too often. Testing with WiFi has been fine but I feel better knowing I can hardwire into my switch if there are issues! The HP shows on the network as an AirPrint target, and my Mac found it without issue / set up its own drivers.
The fold out touch screen is nice, I wish it could be angled horizontally and not just vertically but it’s fine and responds predictably to touch.
Colors and text are bright and crisp. Not quite laser crisp but pretty darn close to these old eyes. The colors are also better / truer in my opinion.
Had issues with feeding vinyl sticker paper sheets, which repeatedly generated paper jam messages (at no point was the paper jammed) and wasted a lot of time. Willing to blame the paper / media (it’s slightly tacky) but our laser handled it ok.
When it finally did print, I noticed some print quality issues / flaws repeatedly in the same places. Unsure of the cause and doesn’t impact subsequent printouts on other paper.
Really like the ability to print larger (A3!) size. Note that scanning does not accommodate larger papers (up to Legal / same as the Brother).
The supplied ink installed easily but they shipped me more as part of the Instant Ink trial. Subscribed to the lowest tier, which is affordable-ish (they just raised the lowest tier to $1.99 for 10 prints per month) but still costlier than laser. Not a huge fan of vendor lock-in / subs but did see in the fine print that HP allows third party inks to be used, which is reassuring if the subscription doesn’t make sense long term.
While printing, the motion of the printer head caused my desk to shake. Worth bearing in mind if you plan on printing heavily while sharing a desk with it. Noise isn’t too bad, better than the laser printing noise we’re used to (lower frequency noise on the HP). I would not print during a zoom call though (noise + shaking).
At time of review, $350 for a large format printer with built in scanning (and Ethernet) seems pretty decent. It’s not a bargain but it’s fair.
Need to spend more time with other media and have ordered more paper types to test with. Will update if anything changes my rating but so far I feel like it’s a capable replacement for the color laser given our relatively modest print volume and need for higher quality color prints.
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Reviewed in the United States on June 7, 2026
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