X2 ELF 88 mini

By joza on Jan 03, 2023

12 298 4

An atempt for a 1s 18650 2".
Frame was donated, FC, camera and VTX are recycled from previous builds. I reduced the bottom plate down to 1.8mm in thickness. I also had to modify it to allow the camera to sit in and for the FC USB to poke through.

Comes in at 40.9g with battery strap (no battery). Battery, LG HG2 (3000mAh, 30A max discharge) I made for it is 48.4g.

I can confirm this thing actually does fly and can be surprisingly lively :D The flight time is around 10 minutes when taking it easy.
I call this experiment a success.

I made M2x3 thread inserts for the top plate mounting screws after testing and a few crashes where the top plate with battery just popped out of place. Inserts are glued and pushed into the bottom plate. Made out of standard M2x3 heat set inserts for plastic I turned down on a lathe.

Photos

Part List

Frame	X2 ELF 88mm Wheelbase 3K Carbon Fiber 2 Inch Micro Frame Kit Support 16x16mm 20x20mm Stack for RC Drone FPV Racing Usa.banggood.com	$13.99
Flight Controller	F4 1S Brushless Flight Controller V2.2 (19 builds) Betafpv.com	$34.99
Motors	4 x Oversky – moteur 1103 sans balais pour mini drones de course 1S, micro FPV, MP03X 16000KV Fr.aliexpress.com	$54.16
Propellers	AVAN Blur 2 Inch Prop (8 builds) Emax-usa.com	$1.49
FPV Camera	RunCam Atom (2 builds) Shop.runcam.com	$19.99
FPV Transmitter	NameLessRC Nano400 VTX 25mw-400mw 5V Fullspeedrc.com	$17.99
3D Printed	This site requires JavaScript enabled Printables.com	See Site

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Discussion

daich Feb 03, 2023

I love builds of old frames! 1s 18650 builds are so heavy that even 3" struggle a lot. Interested how this 2" gets on...I would try Sony VTC5a cell which can push out more current than VTC6 with a little less capacity.
That battery holder is genius as well.

D_LBRS Jan 04, 2023

Nice build. What flight times are you getting on what kind of 18650 cell?

joza Feb 01, 2023

Hey, thanks. Have not flown the full battery out yet... Haven't really flown in a while now. Once I get a chance to test the flight time, will post it.

scirocco Jan 03, 2023

It is very coool.... I never thinking about 1S! I have many Elff88 3S and 4S but no idea about 1S! I like your version :)...
https://rotorbuilds.com/build/27242
https://rotorbuilds.com/build/28131

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