The Bastard Kwad header

The Bastard Kwad

The Bastard Kwad is my first attempt at building a freestyle quadcoptor. I've chosen to name it The Bastard because as my first freestyle quad, I'll no doubt be crashing all the time and breaking a lot of stuff, so the thing will not doubt also get called a bastard constantly, so I may as well make it official.

I am doing this on a low budget, so most of the parts are coming from Banggood. I know some people frown upon this, but I can't justify spending 3 times the price on some parts until I'm a proficient pilot. After flying the Mavic Pro, I enjoyed the hell out of flying around in sport mode, so I wanted a cheap freestyle/racing FPV quad to play with instead of risking an expensive quad by flying fast and wrecking it. I had 2 options, buy an Eachine Wizard X220S (which has a good rep as a starter quad) or build my own. I decided to build my own as I think I could do it for similar money to the X220S, pick the parts I wanted, and get experience and knowledge of building quads. At the moment I'm getting the parts I need, and as I order them I'll list them below along with a link and cost. The Eachine Wizard X220S costs £140.67 at the time I was ordering parts.

Part Part bought (link) Why? Thoughts Price £
Frame Realacc Martian II 220mm 5" Because its similar to the Wizard, and a copy of the Alien. Nice frame, just wish they would include a brace as well as the stock PDB. £21.04
Props DalPROP Cyclone 5045 &
HQ Durable PC Props 5043
Good reviews. £13.10 (6 sets of DALs)
£6.10 (2 sets of HQs)
Motors Racerstar 2306S 2400kV Racing Edition Seemed like the right size and power for freestyle at the right price. £26.07
Under motor LEDs Eachine LEDs (red) &
Matek LEDs (blue)
Because I'm a tart! £1.27 (Eachine)
£2.36 (Matek)
ESCs Racerstar MS Series 35A BLHeli_S ESCs - DShot Ready Was going to get the 30A 4in1 from Racerstar, but it had bad reviews whereas these are highly rated. They are also DShot 600 compatible. £29.48
Power Distribution Board (PDB) Matek HUBOSD8-SE I was stupid and didn't research my FC enough so didn't realise there was a version with OSD. This PDB has an OSD plus can more than handle the amps of the ESCs. I'd have probably gone with a different PDB had I ordered the other FC. £12.47
Flight Controller (FC) CC3D REVO F4 Was a well rated FC, just wish I'd seen there was a version exactly the same, only with an OSD for an extra £2. I would have got the Omnibus F4 instead. Seems decent so far. A couple of problems flashing, but even a complete newb who's never done it before (me) got it done. £17.73
Receiver FrSKY XSR I got the XSR over the FrSKY X4R-SB due to its smaller size and equal range after altering the antenna shielding. That and Banggood had them on sale for £13.50!! I found that it doesn't matter which X(S/4)R receiver you get as you can upload the firmware you need directly from the Taranis. You just need to make a cable to connect the 2, and flash the receiver to the firmware you need. £13.50
Transmitter FrSKY Taranis X9D Plus It was a close call between the X9D Plus and the Q X7, but in the end I bought a 2nd hand X9D Plus. £125.00
FPV Camera 650 TVL 2.5mm Lens SuperHad II CCD FPV Camera Cheap but has good reviews. £17.31
Video Transmitter (VTX) FT48X 5.8Ghz VTX with adjustable power Seems like a decent VTX, with a band display and the ability to change signal strength. £17.73
FPV Antenna Foxeer 5.8Ghz 3dBi Antenna I'm sure Joshua Bardwell gave this a good rating for a cheap antenna. £6.32
FPV Goggles Eachine EV100 FPV Goggles I pre-ordered these without seeing any reviews because they were an absolute bargain! Since ordering, I've seen a couple of reviews and the opinions seem to be good, very good if you got them at the pre-order price. They are currently priced at £122.54 with a 54% discount. £70.70
Sub Total *
* Does not include receiver, transmitter, batteries, or FPV goggles as they are not included with the Wizard either.
£170.98
Total £380.18

Final Thoughts

Overall the spec is fairly similar to the Wizard 220S, however I have a few components I feel are better and the frame is full carbon, not carbon skins with a fibreglass centre. To me the extra £30 is worth it for the building experience, slightly better parts, and the knowledge that there won't be any flakey aspects to the build, which the Eachine seems to be plagued with.

I will be releasing a build video at some point; but until then, here's the maiden flight.

My base setup script

Here is the diff dump from my BetaFlight setup.

BetaFlight Version
Copy CLI code Hide Comments

You can copy and paste this into BetaFlight's CLI. Remember to enter SAVE afterwards.