Ghetto. 2s 1102 9000kv kk65mm 32g dry

By matthew saigon on Nov 15, 2019

8  488  4

12/2/19: i just bought a set of Geprc 1102 9000kv. smoothest motors ever. not a sound when spinning them up.
11/20/19: i added a little foam on top of the camera. and i think that should be good enough for me. foam adds zero weight to it. i found that foam in happymodel 1102 motor box :)
-- i trimed the base of the canopy. so it sits flat on the board now. it's better that way.
11/20/19: i'm getting better at building this. my next thing to try is, using some sort of threads. threads last longer than rubber bands. first tie camera and canopy together. and then tie camera, canopy and board all together. you can still solder/de-solder motor wires. this way everything will stay put as one unit.

11/16/19: i built another one but with dys 1102. they feel a lot better. but still dys 1102 are not up to today standards and a bit heavy.
you would get better chance of getting good motors with dys motors than with happymodel motors.

it's just an experimenting build. i need to change a few things.
it's fast. great for small area. and you can't really go far with built-in RX and 25mw anyway.
needed changes:
better motors: my happymodel motors are noisy. i don't have geprc 1102 but i might try them.
lighter frame: mine is 7g. 5g frame should be good for this weight of drone.
better canopy: mine weighs about 0.5g. 1g canopy for more protection. i'm still looking for a good canopy. i listed a couple candidates for canopy, for me to try.

whatever very light weight builds you have, this experiment would save you 3 grams.
i used foam tapes to tape down fc/esc board and canopy. and used rubber bands to hold everything together.
this setup should be strong enough for 1s. but i'm trying to push the limit and use 2s.
of course, that means i'll take more risk of ruin it. but how much risk and what can i do to lessen the risk, is what i'm interesting in.
11/20/19: i found a piece of foam in happymodel box and i used it to wrap the camera lens and i think that should do it. well it's good enough for me.

you might think, why not 1103, they have more power.
but this is not a toothpick, 45g dry 2s 1103 73g auw. this is 32g dry 52g auw.
with 30% less weight, you need a different power/motors for the build.
that's why i choose 1102 motors instead of 1103.
imagine, you add 30% of weight to your 5inch quad, would you still be using the same motors ?

props' choice is hard too. at this weight, all 65mm props are good.
hq props are more durable and less vibe at higher rpm, but heavier and draw more amps and 1102 spin them up a bit slower.
other props are less durable, less weight, draw less amps, 1102 spin them up a bit faster and with low weight, vibration is a lot less at higher rpm.
so, the choice of props is up to you to decide.

i love these small quads. you can just wake, walk outside, rip it up and then go brush your teeth :)

batteries: GnB 2s 300mah
i'll post PID setting later. but my motors are noisy, PID is bad. but i don't care i'll post it anyway.

11/15/19: motor mounting screws came off. probably from a crash earlier in the flight. you can see the left side motor flew off :)

11/18/10: it's nice to just walk outside and start flying. just some boring dvr. it's probably going my main front yard ripper.

11/18/19: well it happens when you can just walk outside and start flying. then walk inside and start uploading video :)

one thing i like about flying around my house, if it got stuck somewhere. i'll have all day and night trying to get it :)

11/18/19: i'm getting more comfortable with flying around in front of the house.



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joshielevy   Nov 15, 2019  

It actually looks pretty fast flying so low! Nice light build.

matthew saigon   Nov 16, 2019 


  • i have many 1103 motors as you can see in other builds of mine. and i've only shown half of those 1103 that i have. so if this build feels underpower i would just swap out the motors.
  • i guess you don't have both 1103 and 1102 builds so you can't tell the different power setups. this is not 45g dry 73g auw. this is 32g dry 52g auw. that is something like 30% less weight. that's why i chose 1102 motors instead of 1103.
  • 2s 1103 setup feels more calm. this 2s 1102 setup feels floaty and racy.
  • if you haven't had this build, just wait until better 1102 motors come and try it. you'll like it.
matthew saigon   Nov 16, 2019 

i checked out your builds and i can see you're trying to understand quads and their setups. you should join FPV facebook groups. read what people are talking about and ask questions. there are many experienced people in there. they've already been through what you're doing now and they can help you out. this group is one of them and there are many others.

joshielevy   Nov 16, 2019 

Thanks very much!

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