Flite Test Gremlin Drone CF Frame - Slingshot (Y4)

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The Flite Test Slingshot Gremlin takes the performance of a quadcopter, the looks of a tricopter and smashes them together. When designing this frame, we took inspiration from one of the OG Flite Test designers of tricopters David Windestal (RCExplorer). Don’t be fooled by this little grems appearance, because it’s still a quadcopter! The only difference is it’s in a Y4 configuration.

Warning: Be prepared to turn some heads when you add this Gremlin to your fleet!


  • 16x16 stack mounting holes
  • 9x9 motor mounting holes
  • Y4 configuration
  • 20g with hardware and 3d prints
  • Fits up to a 2.5" prop
Frame kit includes: 
  • (1) 2mm Bottom Plate
  • (1) 2mm Top Plate
  • (4) 25mm Nylon Standoffs
  • (8) 3x6mm Red Anodized Aluminum Screws
  • (1) 3D Printed Mount for FX805
  • (1) Battery Pad
  • (2) Battery Retainer Bands

Needed to Complete:

  • Flite Test Power Pack G V2 or any Gremlin motor (4 required)
  • (1) 6+ Channel Radio System 
  • (1) 6+ Channel Matching Receiver 
  • (1) LiPo Charger 
  • (1) 7.4V 300-450mAh LiPo Battery
Saturday, Apr 4 2020 (about a year ago)
Flite Test Gremlin Drone CF Frame - Slingshot (Y4)
First of all it is very durable. At this point I usually crash multiple times per batter, unless I'm practicing hovering or something, and it just gets dirty. To be fair, I always fly over grass. I like it a lot for flying LOS. The shape makes keeping orientation easy, even at a distance for such a small quad. And it just looks cool and it flies really well. I've even flown it in some windy conditions and it did okayish.

So the downside. I had a hard time running the battery cable although I did figure it out. It doesn't seem safe to top mount the battery being so close to the upper prop. Lastly you must remove at least three of the screws in the top plate and loosen the fourth to access the prop screws on the lower rear motor. The props they give you are pretty tough though and you don't have to change them all that often, even as much as I crash I'm barely on my second set.

As far as the electronics, there is no tutorial, at the time I write this, on the powerpack G v2. It was pretty easy to figure out even though I did get stuck here and there. I do wish there had been more documentation on the pin outs. Glad there was only 3 uarts. I found my tx by trial and error.

All those cons and I have to say I do really like it. I'm not sorry I bought it and if it breaks I'll fix it.