Lightweight 2.5" FD120mm leader 120

By QuadifyRC.com on Aug 24, 2017

0 820  3 

Removed all the gear from my X2 Elf because it was just too heavy for the props and felt like it was always working hard just to stay off the ground : https://rotorbuilds.com/build/4862

To recap parts:

Mini Brushless F3 Flight Control System
dys BE1104 7500KV Micro Brushless Motor
FD120 frame
10 Pairs Kingkong 2840 2.8X4 CW CCW 3-blade Propeller 1.5mm Mounting Hole
600TVL 1/4 1.8mm CMOS FPV 170 Degree Wide Angle Lens Camera PAL/NTSC 3.7-5V
Eachine VTX03 Super Mini 5.8G 72CH 0/25mW/50mw/200mW Switchable FPV Transmitter
FS82 MICRO 2.4G 8CH Flysky Compatible Receiver With PPM I-Bus Output
2 Pairs Gemfan 3025 PC Propeller CW/CCW For 1104 Motor 120 150 160 RC Multirotors

This build was much easier with the extra room and feels a lot more solid and less compromised. Final weight of the quad is 65g without battery. 2s 500mah is 33g, 2s 950mah is 48g, 3s 450mah is 40g and 3s 460mah is 50g.

After the maiden I can say it does everything I want, hovers on lower throttle and is much better balanced. It is running BF 3.2.0 with stock pids dynamic filter, all notch filters off and no oscillations - something the old elf 88mm struggle with on much lower Ps and Ds. Motors warm on 3s and no more so very happy.

3s does make the battery sag a bit so need to try the gemfan 3025s. Minor quibble though, on the whole I am very pleased.

Got given a free life on the build - reduced height between FC and ESC and shorted a motor wire on underneath of the receiver pad. Killed the 5v receiver trace but all I had to do was wire to a spare 5v source (LED). No harm otherwise, phew!

PS would recommend you just by the leader if you want this build, practically identical and inexpensive, which can be found here: Leader 120

PPS will update to micro foxeer later on, Albert Kim's video suggests this will fit this frame.

Photos

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