ImpulseRC 3" Micro Apex - sub 250g

By jeffcd on Apr 21, 2021

10  979  0

My son started off with a 3D printed frame and broke it too many times to count.
The we moved on to a TBS Source One Micro and after he broke a couple of those frames and multiple motors, I decided it was time to upgrade to something more durable.
I think this 3" Micro Apex is going to fit the bill! This thing is solid and incredibly well buit and designed.
The 1 year warranty is nice also!

We needed to keep it under 250g, so that's why I choose 1404 motors. I originally bought a set of 1407's with 5mm shafts, but at 14g each they would've put the build well over 250g.

The 1404's seem to have enough power so far. It flies very smooth and I've got the filter sliders set to 2.0 in betaflight.
The iFlight XING2 3800kV motors are smooth as silk.

As you can see in the photo's it comes in just barely under 250g and to get there, I actually had to remove the plastic wire covers and use just two screws per motor mount.

Note that the VTX antenna mount did not come with the frame kit, so I had to 3D print it. ImpulseRC has the files on Thingverse as well as the arm skids and the front frame bumper (the later two do come with the frame kit in injection molded plastic). The front bumper broke in a crash the second day out, so I'm going to reprint that in TPU.

With the 650mAh 4S batteries it gets 4-5 minutes of flight time.

The Runcam Split 3 20x20 board fits perfectly in the 20x20 mounts at the back of the frame and I stacked the VTX on top.

Photo's were taken after the maiden flights in a grassy park, so sorry if it's a little dirty! :)

Photos

Part List

Frame

ImpulseRC Micro Apex Freestyle Frame - 3" - Black Version (3 builds)
Rotorvillage.ca
$64.99

Flight Controller

Diatone Mamba F405 20x20 Mini & F30 30A Stack
Rotorvillage.ca
$58.99

Motors

4 x iFlight Xing2 1404 3800/4600kv Motor (9 builds)
Rotorvillage.ca
$79.96

Propellers

HQ Durable Prop T3x3x3 (2CW+2CCW) - T-Mount
Rotorvillage.ca
$3.49

FPV Camera

RunCam Split 3 Micro 19x19mm FPV / HD Camera (3 builds)
Getfpv.com
$59.99

FPV Transmitter

HGLRC Zeus Nano VTX - 25-350mW (5 builds)
Rotorvillage.ca
$22.99

Antenna

Rush Cherry u.Fl RHCP 5.8GHz Antenna (2pcs)
Rotorvillage.ca
$31.99

Receiver

HappyModel FLI14+ 2.4GHz Mini Receiver - FlySky Compatible (3 builds)
Racedayquads.com
$12.99

Batteries

GNB 650mAh 4S 80C LiPo XT30 (2 builds)
Rotorvillage.ca
$18.99

3D Printed

Official ImpulseRC Micro Apex Printable Files by ImpulseRC (3 builds)
Thingiverse.com
See Site
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