In this review we will check out the latest Beta75 Pro “2” 2S Tiny Whoop from BetaFPV. Do not mistaken with the popular, older sibling – Beta75X. Is it better than Mobula7 and Eachine Trashcan?
Further Reading: Here are some of the best Tiny Whoops on the market.
Where to Buy?
What’s in the Box?
In the package, you get the following items:
- The Beta75 Pro 2 Whoop
- A spare camera mount with 25-degree tilt angle (the one in the quad is 35 degree)
- Battery foam pad
- 2x 1S HVLi 300mAh batteries
- Shorting pin for battery connector
What else do you need to fly this quadcopter?
- A Frsky Taranis Radio – such as the X9D-Plus, QX7, or X-Lite
- FPV Goggles with Receiver module
- LiPo battery charger that’s capable of charging 1S HVLi, like this: http://bit.ly/2CebpWb
And you probably need to get some more batteries so you can keep flying while charging.
Further Reading: What’s the difference between normal LiPo and high voltage LiPo (HVLi)?
The Beta75 Pro2 weighs around 28g without battery. Here is the basic spec:
- FPV Camera: PAL
- 25mW VTX with SmartAudio
- 0802 12000KV Motors running 40mm props
- Supports 1S and 2S Battery
- F4 FC, supports Betaflight OSD
- Built-in radio receiver (mine is Frsky)
Notice how the propellers are installed reversed to the normal configuration. That’s intentional because they set up the motors to spin the opposite direction.
Apparently this fixes “yaw washout” issue when doing acrobatics. There are other benefits to reversed prop rotation as discussed here.
It has two battery connectors, because it’s designed to be powered by two 1S LiPo batteries connected in series, same as connecting a 2S battery. It also comes with a pin that you can use to short one of the connectors, so you can power it with just one 1S LiPo if you want. This gives you lower power and makes it more manageable to fly indoor.
What’s New in the Beta75 Pro 2?
First of all, I think BetaFPV is feeling the heat from the market. In this new model, they have dropped the price to a much more competitive level, at $99.99! This is a good move considering they were previously selling the 65X and 75X at $140/$150!
From first glance, the new Beta75 Pro 2 might appear to be very similar to the Beta75X – similar frame, same 40mm props and blue canopy.
This combo provides insane power to weight ratio, by replacing the motors from 1103 to 0802, they managed to shave 13g off, from 41g to 28g!
However I personally think it’s more like an upgrade from the Beta65X rather than the Beta75X. But BetaFPV is also bringing out a new model, Beta65 Pro… so that would be interesting to see.
Despite the much lower KV motors (12000KV vs. 16000KV from other 2S whoops), flight performance is actually pretty similar, maybe slightly slower but definitely smoother. The quad feels so much more powerful compared to traditional 1S tiny whoops, and it’s great for acrobatic flying.
One major benefit of 16000KV motors is that they do very well even when you power them on 1S LiPo, while 12000KV is more efficient on 2S, and gives you longer flight time. The motors on the Beta75 Pro 2 are so smooth and quiet compared to higher KV motors, I love it when flying in the house.
There are other cool features and components too which i will go into a bit more detail.
Closer Look at the Beta75 Pro 2S
Let’s take the whoop apart!
By removing the canopy, reveals the FPV setup. The camera is mounted in a flexible, injection molded plastic mount. The red wire that is wrapped around the lens is the radio receiver antenna.
As you can see, the camera angle is fixed. I wish it was adjustable, however you can argue that it’s more durable without any moving part.
The FPV camera has a narrower FOV than the Mobula7, I’d say it’s close to a standard FPV camera with 2.5mm lens. Due to the narrower FOV, you see less of the horizon, and combined with the fixed high tilt angle, makes it a bit more challenging to fly in tight spaces.
But the image is less distorted (less fish-eye effect) and much easier to look at. If you want to fly indoor, you should change out the camera mount to the 25-degree mount that comes with it.
Actually that’s probably one of the more noticeable differences when flying these two models, apart from speed and efficiency.
The FPV camera is connected to the VTX directly which is sitting right on top of the FC board with some foam tape.
The VTX has SmartAudio so you can change VTX channel in Betaflight OSD. However unlike the X series, you can’t change power as it’s fixed at 25mW according to spec.
The VTX antenna is a dipole antenna. I strongly recommend putting a zip-tie around it to hold it down against the frame, otherwise it can get in the way of the props when flying.
But really, I think they should have mounted the VTX antenna vertically, rather than having it laying down flat. This would give you better video signal, as it’s to do with radio signal pattern, as explained in my FPV antenna guide. Maybe just burn a hole in the canopy with your soldering iron, and stick the antenna through it?
All-In-One Flight Controller
Another big improvement is the AIO flight controller (FC), it’s just a single board that has integrated 4in1 ESC and RX.
This is an F4 flight controller, while many other competitors are still using F3, like the Mobula7. However, how much difference a faster processor makes on the tiny whoops is up for debate. We don’t generally need to run very fast looptime or many features on tiny whoops.
Further Reading: Differences between F3 and F4 FC.
The range of the built-in Frsky receiver is decent. I haven’t pushed the range limit yet, but I have no problem flying anywhere in the house, or within 100 meters radius in the park. If you want the best range/signal possible, I really think you should straighten the RX antenna and have it mounted vertically and securely somehow… Wrapping it around the camera lens isn’t going to give you the best signal.
For that I feel like they might have slightly rushed it and just came up with this quick “hack”.
I’ve been told they will release this FC with other built-in radio receivers such as Flysky, Futaba and Spekrum, so you just need to pick the one you want in the product page.
I like the motor connectors on this FC, it makes changing out motors so much easier without soldering.
You also have RX bind button, FC boot button and the USB port, all in an easily accessible location.
The frame is flexible and tough, mine has been holding up well against crashes. There is a lot of clearance between the ducts and the props, so the motors and props are well protected even in collisions.
If you are looking for glue for fixing broken frames, check out the E6000 glue.
Probably because they aimed for a lighter quad, and decided to supply smaller 1S 300mAh HVLi instead of 350mAh with the quad. These batteries weigh 7.5g each.
If you just simply slide the two batteries in the battery compartment, it feels very loose and the batteries can easily eject in a crash. Therefore you should put the foam pad provided in there first, then slide the battery in one by one, which gives you a much tighter fit.
However, not sure how we are supposed to fit a single 1S battery in there though. Maybe we need some 3D printed part? Guess they didn’t think that part through too well.
Setting Up Beta75 Pro V2
It took me maybe 10 minutes to set it up and take off. Very easy.
If you need help with troubleshooting, or setting up, BetaFPV has a good website you should check out.
The first thing to do is to bind it to the Taranis. Simply power up the quad, press the bind button and it would be in bind mode.
I needed to change channel map in Betaflight to Default AETR.
Setup modes for arming, angle mode, and beeper.
Finally, setup Motor/ESC Beacon, because it doesn’t have buzzer. You don’t need to change any ESC settings, just type this the commands in CLI:
set beeper_dshot_beacon_tone = 3 save
I haven’t spent time tuning it yet, only change was the rates. I don’t know if they actually tuned it for us, but I have to say it flies pretty darn good out of the box! If I do tune it even better in the future I will post my settings here.
It flies very fast and snappy, very locked in, and great yaw authority which is beyond my expectation for a tiny quad this size. With the 35-degree mount it’s very hard to slow down when flying indoor and it’s quite challenging. Changing it out to the 25-degree mount feels slightly better.
If you want to reduce max throttle, check out my tutorial. This works like a charm even when you are using 2S by reducing max throttle to 50%!
I will get some footage uploaded as soon as I can, but life is busy at the moment :)
What Improvements Needed?
- Adjustable camera angle
- 200mW VTX power. Yes 25mW is enough for most people, but having 200mW allows you to go further
- Slightly wider camera FOV – maybe just swap it out to one with better WDR as well
- More accessories – like spare props, batteries and charger; BetaFPV has to keep up with competitions :)
- Needs to mount VTX antenna and RX antenna properly for better range
- Include a XT30 connector for 2S batteries
Overall, I love the flight performance of this quad. Perhaps the release was a bit rushed and the small details were overlooked, but I do hope these get improved shortly and I see potential in this model :)