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Mobile water-cooled Datacentres.

My hangar.... 1. A commercial prototype heavy lift V4/V8 (Nex5 gimbal range). Currently without top plate and gimbal in pic. 2. Medium lift conventional X4 (Gopro gimbal range) 3. Ubiquitous TBS Disco (currently fitted for night duty) 4. 240 size KK fun X4 for club night at gymnasium All apart...

Ironically, I looked at all the t-motor MN4xxx motors (being somewhat of a tmotor loyalist), but found that there was a "max watts" limit to them (300-ish watts), when used on a quad. The MT3515's were perfect (900watts), but very heavy. So I went with the best of both worlds - Sunnysky x4112s...

I've built one of these. Still running it in V4 at the moment - will upgrade to V8 soon. This is it with a TBC Disco for size comparison.

Hi guys, I'm doing a custom build quad, and have been ordering some part from China...and come to regret it. One area in particular...the screws! Where do they get them from??? They are utter rubbish - they seem to use a 2.65245mm hex head, which even when you can get an allen key that fits...

Yes, "something with a camera". And DJI S800 arms. And S800 legs. And S800 centre plates. And the new DJI combo motors. And a DJI GPS. Apart from those things, nothing that would identify this as a S800. No sirree...:facepalm: :rolleyes:

I like the black. For more constructive responses, maybe you could go into more detail about your rig, and what you intend to do with it?

Errr....you got that right? 1C on a 10.9A is....10.9A. It takes 90 minutes...? If you're charging a 10Ah at 4C it should take 20 minutes...not 6 hours...:frog:

+1 - I do this too, with a slight modifier, in that I use a single 3S 1300 with the 3DR power module to run all the electronics. Only downside to this approach is the compassmot process is throttle-based; you won't get as accurate flight as you do with the current method. I have a compassmot of...

Are you using this while on the airframe? I hope you're using 5ghz..a wifi transmitter than close to the rx will mash all over the normal 2.4 signal.

I blew big wedge on a Maxamps 10900 6S, and I thought I was being a baby - I land at 3.5V (3.65V idle), and so far, the pack is doing ok, with maybe only the tiniest bit of puffing. I always balance charge at 1C. I typically put in around 9000 or so. Hopefully this is cautious enough.

Hi guys, After drumming my head against the wall trying to source the problems with my RCtimer gimbal, I eventually traced one of them to a physical problem, not a PID one. Basically, the entire gimbal itself was moving when exposed to lateral accelerations in X and Y axis - in...

Can I also add...I'd like to have some M2.5 x 37mm versions too. Most of the stuff coming out of China in 12.9 is just pure garbage.

Ah yes - apologies - I was assuming quad, not octo. 800g...dangerously close to a kilo, innit? :)

Interested in your assessment; the MT gives better flight times, more thrust and is more efficient. Surely then the extra weight is irrelevant? If an extra 400g of weight gives me an extra 3 minutes of flight time, I'm taking it. :-) It should be noted that I'm keeping within all safe...

Excellent flight skills, given the tight environment!

Hi guys, Still struggling to get this optimised, and I've been up and down the PID and power scales. Ignore the yawing (and poor pilot skills!) in this video, but can anyone see what the problem is with the "bobbling" in roll around dead centre? It should be totally level, but you can see...

ok, big mistake...managed to break off and damaged the USB port on my alexmos! So...I can use the serial connection using a FTDI cable...except I can't! I can't seem to get the cable to work! I keep getting a "Serial corrupt" message, and the alexmos just crashes and resets when you trying to...

I'm using the new quadframe.com brushless gimbal. 34euro's and fits directly to the quadframe legs which is really handy! Lighter than the Rctimer too. However...it's not that easy to tune. See attached - an Alexmos powering 2 x T-motor 2208's lifting a gopro2. The roll axis is just not stable...

Well, I've ironed out most of the problems, but am still stuck with one. I get a low amplitude vibration on the pitch axis beyond 20'... But only when pitching forward! Pitch back... And it's fine all the way to 45'! Tried a load of different power and PhD settings, rebalanced it...