Nvision Junior Racer75 Review
• Chris Landa
I was intrigued when I first saw Nvision Junior Racer75 - I am a sucker for the color purple, so this one instantly won my heart. I have never heard of Nvision before, but the copter seemed super sturdy and I needed to try it out.
This is a whoop sized, 75mm quadcopter - but this one is intended to be flown with 2-3S - and I really recommend 3S for this one, but more on this later. Let’s first address the elephant in the room - this thing weighs in at a whopping 55g without a battery. This is pretty substantial - especially since there are whoops in this size class that weigh less than half of that.
But here, have a look - it is a beauty:
The product page also states that the model is available in the Velocidrone simulator, unfortunately I could not find it listed as available model. The VelociDrone support team confirmed that it has been submitted for addition into the simulator, but that it could still take some time until you can select it as a playable option there.
The box also states that there is some kind of partnership with MultiGP, I am not entirely sure what this exactly means, but you can buy a kit with goggles and controller on the MultiGP website. From what I understand it is part of MultiGP’s STEM alliance trying to interest the youth around the world in the STEM field through the hobby of FPV.
There are three different color options for this copter: red, black and purple. The red and black one are MutiGP branded and only available on the MultiGP website. Purple is available with any other re-seller. Except for the color, there are no differences between them.
Thanks to banggood for sending me a sample for review.
Electronics
The flight controller and ESC’s are an AIO whoop sized board. You need to run your own receiver though. Soldered to the flight controller you will find a servo plug, to which you can either plug in, or more likely, snip off the plug and solder the wires to a receiver of your choice. I went with a tiny Fullspeed RC D8 receiver, but you can basically run anything else. Per default the signal wire is connected to the inverted SBUS pad - but there is a non inverted pad available on the flight-controller.
The electronics look awfully a lot like BetaFPV hardware, just without the branding. The flight controller seems to be the F405 and the video transmitter the A01.
Flight controller
The flight-controller is an AIO flight controller with F4 processor having the ESC’s on board. OSD is included and 8MB flash are on board too so you can utilize blackbox logging in order to improve your tune.
ESC’s
The ESC’s are rated for a continuous amp draw of 12A and they come flashed with BLHELI_S, version 16.7 (G-H-25, 16.7). RPM filter capable firmware can be flashed, but is not flashed by default. I installed BLHELI_M and enabled RPM filtering. Unfortunately I did not get any increase in flight time - which I did not really expect on motors of this size anyway.
Video transmitter & Camera
The video transmitter is switchable between 25mW and 200mW. Channels and output power can be adjusted via SmartAudio. It is a shame, that VTX tables were not installed by default - but you can use the default SmartAudio VTX table - except that the 500mW setting will not do anything. I highly encourage you to install them since the button to adjust the VTX cannot be easily reached without disassembling the quadcopter.
The included camera is a Caddx EOS Turbo 2, it has a resolution of 1200TVL. The image is actually quite good if you do not happen to have dirt on the sensor, which is quite a gamble with Caddx cameras. As usual, I had my speck of dust on the chip after the first crash, so again - no luck for me with Caddx.
The camera angle is slightly adjustable, I wish you could adjust it a little bit more. The canopy is protecting the camera very well, I cannot imagine you breaking the camera on this one.
Motors and Props
The motors are 1103, 8000KV motors with a 4 hole mounting pattern. They directly plug into the flight-controller. Thanks to the very common form factor you can easily swap them for different motors. The props cannot be screwed down but just hold by friction fit - and they really stay on there very well. The shaft has a diameter of 1.5mm.
The included motors are Gemfan 1636, four blade props. A pretty aggressive prop for this size. You can swap it for any 40mm sized prop - just keep in mind that you are working with a 1.5mm diameter shaft.
Batteries
The copter can be operated with 2 and 3S batteries. I tried the 2S 450mAh GNB batteries, but was not overwhelmed, seemed very under-powered and allowed me to fly for about 2 minutes.
The batteries are mounted with a battery strap and a piece on anti-slip rubber prevents the battery from coming out in a crash. And this rubber really does a good job - in over 50 flights none of the batteries slipped.
The 3S 300mAh GNB’s are a much better fit. Unfortunately they sag pretty quickly. Usually I fly my packs down to 3.5V per cell to get a resting voltage of 3.7V but with this setup I fly them down to 3.2V and they bounce back to 3.7V. Again, the flight-time being around 2 minutes.
I also tried the 3S 450mAh Gnb’s but did not like them too much - they are a bit too heavy for my taste and I also only get a flight time of around 2 minutes.
My last test was to HV charge the 3S 300mAh GNB batteries - which I don’t really like to do, since they tend to go bad quickly. Flying with HV charged 300mAh batteries gave me a flight time of about 2:45. So yeah, in this case I would say: Go for it - HV charge your batteries for that additional 30% of flight time.
I also tried one URUAV 3S, 300mAh battery and it performed considerably better than the GNB ones - at least when it comes to sag. Since I only have one of those, I might just have had luck with it, or they might generally be better. I will definitely add a couple of those to my next order.
I think the perfect match would probably be a high C, 350mAh battery, like the Coddar 3S, 350mAh - but I have not personally tried them, so keep that in mind.
In the product description a flight time of 5-7 minutes is stated. This is in my opinion absolutely impossible, unless you drain your battery until the quad falls out of the sky, and even then I highly doubt this can even be close to what the product description says.
Frame and canopy
The frame of the Nvision Junior Racer75 consists of a super sturdy, soft to the touch plastics. To stiffen the frame up even more, the copter also has a 1.5mm thick carbon plate. The canopy is made from the same material as the frame.
Frame and canopy are super sturdy, I do not think that it is possible to break those parts during normal use - I honestly think that you can drive over this whoop with a car without anything happening.
Those parts are obviously also the parts that add the most weight to the overall weight of the quadcopter. In my opinion you could make all those parts a little less chunky, without losing too much durability - I’d guess 10g can be easily dropped here.
Accessories
The box contains a spare set of props, a prop removal tool, some spare screes, zip ties and a spare battery strap. The box has a foam inlay and is pretty decent for transporting the quadcopter. I am spoiled from most EMAX quads and would have loved to see a dedicated carrying case - especially at this price point.
Performance
The base tune is pretty decent, I only moved around the OSD and plugged in my rates before I first gave it a spin. As mentioned in the battery section, don’t expect too much flight time. I came in at around two minutes.
It’s a lot of fun to fly this one, you have an extra level of confidence due to its durability and dare to try stuff, that you probably would not dare to try with a different setup.
This thing is definitely not made to be flown inside of apartments or houses. I would recommend large indoor spaces or outdoors. Also keep in mind, that due to its weight, it is very likely to break whatever you crash into, rather then the quadcopter itself - for example your TV.
If you are planning on flying freestyle, this is probably not the copter you want to get. Although you can do acrobatics, it seems a bit too heavy to really be fun. In this case I would rather go with the URUAV UZ85.
Flip after crash works flawlessly - it is actually pretty violent, so be careful with stick input while flipping back to take off position.
Conclusion
I actually like the Nvision Junior Racer75 more than I thought when I initially weight it. It definitely is not the most efficient quad with the longest flight time, but I still think it has its place on the market. As the name suggests the Nvision Junior Racer75 is marketed to younger - junior - pilots. Probably someone who does not have the money to invest in new parts every flight - and this is in my opinion the biggest selling point of the Nvision Junior Racer75 - it is basically in-destructible.
And honestly - it is a lot of fun. It has been a long time that I went to my test parking garage day after day to fly a quad, but with this one I have been three days straight.
If you are looking for something to freestyle with - this is absolutely not what you want to buy. I mean sure, you can do some acrobatics with it, but there are better options if you are looking for that: I would rather go with the URUAV UZ85.
With a price of around 140$ on banggood, the Nvision Junior Racer75 is definetly one of the highest priced option in its category, but what you pay more initially you will definetly save on spare parts. I crashed this thing a lot into concrete and metal and I did not even bend a single prop.
I would recommend this copter to anyone who want’s a whoop that is just indestructible, something you would give to your kid without having to fear swapping parts any time soon.
Chris is a Vienna based software developer. In his spare time he enjoys reviewing tech gear, ripping quads of all sizes and making stuff.
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