monkeymagic shoelace 88mm

By QuadifyRC.com on Jun 17, 2017

16  1,836  8

Intro

This is my second build and got it mostly right on the first go. I based this build around the Aurora ARFUN 95 Pro power train but with a smaller X2 Elf 88mm frame. I have an X2 EYAS 80mm frame on the way that will hopefully fit the runcam micro and will switch to that if it does. I feel my motors are probably too high in KV for 3S so if they die will probably go 6500KV or get some larger capacity 2s batteries. For now I'll run the king kong triblade 1935 props to go easy

Everything except batteries from China because shipping from the US is impractical. Batteries are from a local NZ supplier

First flight

On my first flight I forgot to pack a rubber band so I had to use... my shoelace!

I've chucked on the PT1 filter and the motors are cool. Motors due to be softmounted before I remove the notch filters. Reverse prop rotation good but it makes my stack dirty! I have set up a couple of PID profiles, one for 2s and one for 3s because 3s was socillating badly. Albert Kim's youtube vid on this was a big help and pinched his settings while there. Also got another set of 3s PIDs from a friendly RCGROUPs chap. Now I have no oscillations but the weather is a bit shit here for now so can't do any real testing. That runcam swift micro can't be far away now...

Micro swift won't fit

There is not enough space in this frame between the front standoffs and the FC stack to correctly angle the micro swift so have on sold it. I'm thinking about getting a 2.5" frame to swing some bigger props later down the track but enjoying just flying this for now. I've also added a beeper/led to the rear which is critical because these are so damned easy to lose!

Quad pulled apart

Pulled this one apart and put the guts into this one: https://rotorbuilds.com/build/6437 . Performs MUCH better

Photos

Part List

Frame

CA$10.15 25% X2 ELF 88mm Micro Brushless FPV Racing Frame Kit RC Drone 3K Carbon Fiber RC Parts from Toys Hobbies and Robot (29 builds)
Banggood.com
$7.50

Flight Controller

Mini Brushless F3 Flight Control System - $35.24 |GearBest.com (10 builds)
Gearbest.com
$35.24

ESCs

Mini Brushless F3 Flight Control System - $35.24 |GearBest.com (10 builds)
Gearbest.com
$35.24

Motors

4 x dys BE1104 7500KV Micro Brushless Motor - $10.62 |GearBest.com (49 builds)
Gearbest.com
$42.48

Propellers

GEMFAN BN2035 - 4 Four-blade Propeller 10 Pairs - $7.25 |GearBest.com (2 builds)
Gearbest.com
$7.25

FPV Camera

CA$10.67 34% 600TVL 1.8mm 1/4 CMOS 120 Degree Wide Angle Lens FPV Camera PAL/NTSC 3.7-5V for RC Drone FPV Racing RC Parts fr (19 builds)
Banggood.com
$7.89

FPV Transmitter

CA$18.92 Eachine VTX03 Super Mini 5.8G 72CH 0/25mW/50mw/200mW Switchable FPV Transmitter RC Parts from Toys Hobbies and Robo (425 builds)
Banggood.com
$13.99

Receiver

Eachine Aurora 68 Spare Part Compatible Flysky FS82 2.4G 8CH AFHDS 2A IBUS Receiver (2 builds)
Banggood.com
$7.69

Batteries

Hydra 460mah 11.1v 45C 3S LiPO
Acecompany.co.nz
$12.22

Misc Parts

9.5g X2 Eyas 80mm Wheelbase Carbon Fiber Mini FPV Racing Frame Kit for RC Drone (5 builds)
Banggood.com
$7.50

Misc Parts

10 Pairs Kingkong 1935 48.26mm 1.5mm Mounting Hole 3-Blade Bullnose Propellers for 90GT Drone (7 builds)
Banggood.com
$4.90

Misc Parts

RunCam Micro Swift 600TVL Mini FPV Camera - $26.67 |GearBest.com (192 builds)
Gearbest.com
$26.67
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Discussion

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Roto_RunnerFPV   Aug 10, 2017  

I love this build. When I get old of my current I will for sure try this, especially for the cost.

QuadifyRC.com   Aug 10, 2017 

Cheers! I'm about to change the gear over to a larger frame, the FD 120 because I think the motors are under-utilised. If you build for 3s I'd go 6500kV instead of 7500kV. Good luck :)

Roto_RunnerFPV   Aug 11, 2017 

Thanks for the tip!

LawnDart   Jun 18, 2017  

I like it. I'm running the same motors in 5400kv on a similar 83mm frame and they are working well on 3s.

What is the weight?

Show 1 more comment
LawnDart   Jun 18, 2017 

I used a RotorX Atom 83. Build is here but I need to update it to reflect some different parts: https://rotorbuilds.com/build/3956

QuadifyRC.com   Jun 18, 2017 

Nice! For your emax motors I saw that one of the youtubers just pressed some Gemfan 2035 props on with some success:

Can't wait to get flying but between having young kids and short winter days at the moment I don't have time for toubleshooting. Might just go with some lazy PIDs to filter the vibrations out.

LawnDart   Jun 18, 2017 
1

Thanks for the info. I may have to dig them out of a box and find a new frame. Nothing like building an entire new quad just because you have motors and escs. =)

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