Home / Frames / RotoriousFPV Speck 80 BL (Speck 85 BL) Review

RotoriousFPV Speck 80 BL (Speck 85 BL) Review

You can purchase the Speck 80 BL here (be sure to select the correct warehouse)

Rotorious impressed us with the quality and finish of the Crook 110. Can they do it again on a smaller brushless micro?

Initial Impressions:

Much like the Crook 110 we received, the Speck 80 BL was well packaged. In the package was the carbon base plate, the carbon FPV cam holder, standoffs + screws, TPU cam holders for smaller cameras with separate VTXs and finally a load of rubber bands for holding the battery.

Quality of the carbon was excellent, all the cuts were clean and the carbon appeared to be quasi-isotropic. The 3D printed parts surpassed our expectations as well; the layer height appeared to be around 0.10mm and TPU was better quality than we are able to print!

Our Build was:

  • Rotorious FPV Speck 80BL
  • Emax Femto FC
  • Cicada 4in1 10A 2-3S ESC
  • DYS 1102 10000kV
  • Furious FPV 1935 4 blade prop
  • FrSky XM+ Receiver
  • FX-798T AIO FPV
  • Nanotech 300mAh 2S 35-70C

Build:

We were expecting the build to be difficult, as building a brushless quad smaller than 100mm is always going to be a challenge. However, we were pleasantly surprised with how easily the Speck BL went together.

Run through of the build:

First we mounted the 4in1 esc on the frame with 3mm spacers, any higher would have caused issues later. After this we bolted on the motors and soldered them to the appropriate pads on the ESC, an easy enough process thanks to the silicone wire on the DYS motors. The next step was to mount the Femto on top of the 4in1 using double sided tape, which was obstructed by a rather annoying placed SMD capacitor bang in the middle of the ESC. Perhaps the hardest part was soldering the signal wires from the ESC to the FC, as the Femto had the signal wires placed by the motors. This meant we had to route the wires around the base of the FC to solder them to the correct spot. Thankfully, the silicone wires on the ESC’s JST connector made the process substantially easier. We placed our receiver on top of the Femto, held in place with some double sided tape. The next part was to mount the fpv camera in place. This is where the design of the Speck BL really stood out to us. The mounting method consisted to using 2 standoffs to hold the AIO between 2 carbon plates. The fit was phenomenal, with absolutely no slop in the camera. It is fully adjustable between 35 and 12.5 degrees, and offers ample protection to the camera. We applaud Rotorious for this lightweight, strong and convenient solution to the age old problem of AIO mounting on a micro frame.

Our thoughts on the build:

The build is easier than we initially anticipated. That being said choosing 1 wrong part could quite easily make the build substantially more difficult. For example, an FC even slightly bigger than the Femto could props to strike the board, or an AIO slightly smaller than the width of the standoffs would make mounting the AIO much more difficult than it needs to be. Therefore, we strongly recommend you join the Rotorious FPV Underground Facebook group for build tips. There is also a very useful guide showing you what parts are proven to work, so you don’t have to do any guess work in picking a part that might/might not work. The price is reasonable at £22 ($28). This is substantially more than you can purchase a frame from Banggood or GearBest for. But you get what you pay for, the quality of all the components are superior to even the most expensive Chinese frames. Our one niggle is the fact that you have to remove 1 standoff to access the USB port, which was a little annoying when we were PID tuning.

Our build came in at 39g without battery, and 56g with a 300mAh 2S.

Flight

Our past experience with brushed quads has left us with mixed feelings. On one hand they are a fun and convenient way to cycle a few packs in a lunch break. On the other they are sluggish and fly like a 2011 tricopter with a kk2 board! In this regard, the Speck BL exceeded all our expectations. The brushless motors really made a difference. All the horrible wobbles that we all too often experienced on brushed quads were eliminated and it flew similar to our RotorX Atom running 3” props. Yet it still maintained the small form factor that makes flying in a small space possible. There was the occasional hiccup when we flew it to its limit, such as oscillations in very hard 180 turns. This is inevitable due to the tiny torque the 1102 motors can produce; although PID tuning should be able to eliminate most of these wobbles. Top speed was higher than a brushed quad, but the real difference was in manoeuvrability, sharp turns were much more precise and flips and rolls were much more natural than on a brushed quad.

Conclusion

The Speck 80 BL is a glorious frame, every part has been well thought out and the build is well documented. If you stick to the recommended build, the quad comes together effortlessly and as easy as a 150 quad. 1 wrong component could easily make the build much more difficult than it needs to be. If properly executed, you are rewarded with a high performance and durable micro brushless quad.

Build: 7/10

Flying: 8/10

Price: 8/10

Overall: 9/10

You can purchase the Speck 80 BL here (be sure to select the correct warehouse)

 

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