monkeymagic shoelace 88mm
By QuadifyRC.com on Jun 17, 2017
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
Show stores (3)
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?
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
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.
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I love this build. When I get old of my current I will for sure try this, especially for the cost.
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 :)
Thanks for the tip!