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So, I sanded down the contacts on the motor leads and that worked. All engines firing properly now. Thanks for the tip kloner!

I'm going to have the same issue when I get the 4s batteries. My gimbal will not take a 4s (Senrigan from Alware only takes 3s) so I will need to add a BEC correct? By the way, I bought some nice carbon fiber props from Innov8tive Designs (very close to me) and put her in the air for the first...

I just finished the build of my first RC multirotor (thanks to all of you who were so helpful on my battery questions). It is a stock DJI F550 with their motors, esc's, Naza V2 and a Futaba T8C radio receiver combo. After I finished the configuration of the Naza and Futaba, I fired up the copter...

My friend has a Phantom (first version) and he is using 3s 25c batteries. When he removes his batteries after a flight, they are pretty warm. I just figured with two more motors I would have a higher draw so would want to be able to pull more current than the 25c allows.

Excellent. Again thanks to everyone for their input. I have ordered those zippy 5 amp 4s 25c batteries.

So the higher C rating increases the weight? Dint know that.

OK, very good information from y'all. What about the props? The kit came with two sets, one 10" (sticker says 450PRP and 450P10) and the other is 8" (one sticker says 450P08, the other says 330P08). Do you recommend the 8" props with the 4s batteries, or will the extra weight offset the effect...

shoot. shoot. shoot. Yesterday I went to my local hobby store and spoke to the owner about batteries, and he recommended some 3s 2200mAh 50c batteries, which I bought two of. I took them home and replaced the ends with Deans connectors and started charging them when I saw kloner's post...

So I have built the Alware landing gear/gimbal combo, which weighs a little over 1.5 lbs with the GoPro on it. You would recommend a 4s battery at this point? What do you think about running two 3s 2200 50c batteries in parallel? I am guessing that I would still be under voltage with that setup?

Hey SoCal, thanks for that good info. I forgot about the prop size, which reminds me... I have two sets of props that came with the F550, 8" and 10". According to your reply, the recommended prop for the 3s battery is the 10"? That seems counter-intuitive... I would think that the bigger prop...

So I am building my first multirotor (all my RC experience is on borrowed toys) and I am trying to figure out which batteries I should be using. I have read some great information on Lipo batteries here, but I still have a question about what I gain or lose by going 3s or 4s. I have a stock DJI...

Thanks for the welcome! Nice to see some peeps local to me! I forgot to add the humor part that Bart requested, so here goes: After 32 years as a gynecologist, my father decided that he was tired of the medical profession and wanted to get into something new. He had always been interested in...

Hey everyone! I've been reading a ton of stuff here on the forums, educating myself on what is shaping up to be my new addiction. About three months ago, a good friend of mine went out and bought a Phantom and brought it over to show it off. I was instantly enamored. So I started doing research...