The total weight ready to fly minus the battery is 172g.

How did you get your so lightweight? I got an aos 3.5 build with:

• Foxeer reaper 45a aio f7
• rcinpower GTS V3 1804 - 2450KV
• o3 unit
• HQProp T3.5X2X3 Grey Poly Carbonate - 2CW+2CCW
• Matek ELRS-R24-D

Mine weights about 182.8 grams w/o battery. And I dont even use the plastic antenna mount which weights a few grams. I tried as lightweight as possible. Can maybe safe 1 gram if I made the motor wires a little bit shorter.

Are using all the TPU that came with it? I'm only using the TPU for the O3 antenna. I'm not even using the TPU that was intended to go under the O3.

I think your motors with a same given wire length are probably ~ 1 gram per motor heavier. I don't know how much that ERLS receiver weighs but I can't imagine much.

rotorbuilds.com/thumbnails/picturesf23873geKvxA1lVMkouYEGUwGZLemU6jpg_1200x1200.jpg

Nice looking build. so, your about 10 grams heavier. the motors are probably only 4 of it. i noticed you're using those motor wire covers that came with it. i wonder how much those weigh? i didn't use those. I've heard they just break and cut the motor wires.

I'm using a smaller capacitor on mine as well. it's one those silver 370uf ones which according to Liang's website it's enough for my set up.

I changed my build a little. Used a smaller capacitor that would fit under the frame + tape instead of the plastic tubes, looks 10 times btter.

I just weighted on of my rc motors, with 8.5cm wire they weight about 12.7-12.8 grams each. So that is at least 1.20g per motor more. Matek receiver is 2grams more. That is about 7 grams. My drone atm weights 181.3 grams. I'm also using this waterproof coating, which is also 1-2 grams probly. I really need to waterproof my drone since I live in the Netherlands, where there is so much water / wet grass :P I hope DJI will release an O3 nano which would be 15-20grams ligher, would solve everything and still have the power.

But even if the drone is under 250g, it will still be classified as a 250g+ drone if i'm correct because of the power and speed. So it does not matter that much.

Ouch. There is only the weight restriction here in America. My AOS rips, especially if I use the 2.5" pitch props. Still no where near my Quadmula F5 split but it's pretty fast. I was very comfortable flying my 3" vista build aggressively through my neighborhood. I rarely fly the AOS in my neighborhood and usually walk about 5 minutes to a small park to fly it.

There is some pretty good info out there on de-casing the O3. I think it shaves at least 10g off the weight......

I'm probly going to sell my current aos 3.5 and make a new one with the same motors as you. Wonder if you can make a video with using max throttle. Want to compare them to the rcinpower 1804 motors. I will upload a few videos to on my youtube channel and post them :). Your build is perfect, can even add foxeer gps with compass.

I'm actually in the middle of updating mine slightly. I'm switching the AIO for the Speedybee. I put a Speedybee stack on my 5" and i really like the built in wifi Bluetooth. Tuning in the field so easily is awesome and using their AIO only adds a gram to my build.
I'll finish before the weekend and get you some videos. i think you'll find that the T-motors are actually going to give you more thrust. kv is important and the T-motors have about 16% higher kv than those 1804 motors. The T-motors were made specifically for 3.5" freestyle builds whereas i believe those 1804s were made for cinawhoops.

Using an AIO (speed controllers mounted in the flight controller) reduces weight significantly. The motors used on a sub 250g build will not draw much current. The AIO handles it just fine. As you see, with the battery I am using I'm just a few grams under 250g. If you are not worried about that weight limit you could use a stack. GNB makes a 380mah 6S 90c battery which you could use to save weight there and use a stack to make the weight. I personally want as much amperage potential as I can get thus the largest 6S possible with the highest C rating. I have had no issues with the AIOs that I have put in my lightweight builds.

interesting. I've had a few crashes but no real severe impacts yet. i have not experienced any issues with the motors. I've probably only got 25 packs on them. if i have issues I'll probably replace them with those 1804 rc inpower motors as they're just slightly heavier. I'm traveling for the next 3 weeks and the AOS is the only drone i took. fingers crossed.

I just first flashed bluejay, now v19, (48 khz which is recommended by DJI for the O3) , then betaflight 4.4. I utilized the UAV Tech 3-4" preset on medium build quality with RPM filtering. Once you do this you'll need switch bidirectional dshot back on. I also used the 250hz ELRS preset. I've only got about 25 packs on it now. I need to do a little more refinement but it flies well. I'll message you my CLI.

I just looked into the 1804s. I found some RC Inpowers that are made for 6S that are only 12g with wires. Wow, wish I had realized. Still my T-motors with just the 3520 props I'm getting a 10:1 thrust to weight ratio. I definitely notice a boost using my 3525 props but it seems unnecessary.

i have the HQ T3.5x2.5x3 props also. i haven't felt like i have had any issues with torque on the 2" pitch and I feel like they have more grip. Murders flies 3016 on his 240g build. it doesn't look like he's struggling. i like Gemfan props also but they are considerably heavier. Now that I've removed the BEC I've got the room to pick up a gram in props.