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Or Xoar/JXF props. Reliability is all about the weakest link - so everything has to be good, particularly the connections - in order of reliability: crimp > solder > locking connector > non-locking connector.

The OpenPilot Revolution is coming along nicely - it will be flying at the developers' meeting here in Portugal next month.

Agreed, Denny - but I'd actually put it the other way around: light first, then subject/composition. You can find an interesting subject but if the light ain't right... come back another time ;) And the importance of vertical (portrait) compositions - after all, how many...

Two spelling errors in the first three lines of the site banner - doesn't inspire confidence, either ;)

:D Those are Plettenberg's connectors - there's always an exception that proves the rule ;) As a matter of interest, how much does a male/female pair weigh?

Yeah - I should have said that I've heard people (experts, but only in the internet sense ;)) saying that such boards can handle the power because the distances are short and so on - but my view is that physics is physics and you can't really change it ;) Certainly we get away with using 10...

Did someone tell you that KK board can handle 100A? Since the board itself is only 1mm thick, I suspect the copper will be standard "1 ounce" - in which case 100A would melt the whole thing, for sure!

That KK board claims the copper is 1.0 µm thick. Obviously a mistake - try that number here and see how much current it would handle! See what I mean about "credbility"! ;) Two or three problems with using the big Andersons (like the SB series) - - you shouldn't really put more than one wire...

I agree with homer911 - a connector for each battery. I'm using 4S x4 - each one has Anderson 45A Multipole connectors - they all feed to a single "PCB" with 0.5mm copper - the whole setup will handle 200A WOT, no problem. I hate bullet connectors, Deans, EC5, Traxxas and all those others -...

Just found this very good guide to fitting/charging an aux battery: http://www.fridge-and-solar.net/dual_bat.htm

Be very careful around plastics, though - many threadlockers will attack many plastics. If in doubt, ring the helpline at the nearest Henkel office (01442 278100 for you in UK) - those guys really know their stuff.

Thank you, Gunter, for asking the question and thank you, Keith, for answering it. It never occurred to me that there was any way other than keeping the engine running. Nice one!

10x6 is too high a pitch ratio - anything over 50% (i.e. 10x5) is likely to produce a phenomenon called "blade stall" when hovering. Certainly this will reduce lift and therefore flight responsiveness and efficiency. Worst case - you won't be able to take off ;) Generally, we need low pitch...

The keyed power connectors are clever. But where's the connectors for the PWM to the ESCs? And ESCs zip-tied under the arms? What's that all about? :cold:

Where? :dread: - I'm sitting right next to the fault line that runs along the west and south coasts of Portugal. We get tremors every year, often strong enough to be scary. Like the west coast of USA, we're overdue a big one.

And OpenPilot CopterControl, as well as the forthcoming (and aptly named) Revolution ;)

The fundamental problem with isolating the FC from vibration is its low mass, which calls for extremely soft material. But soft material means that it will move about in response to translations. And the actual damping performance is likely to be be poor anyway for such a low mass. So IMO the...

Forgive me for asking, but how do you get a Cinestar 8 and Cinestar mount into a Pelican 1550?

Great camera. I don't know the Cinestar but I gather it can lift a Red Epic, so a D800 (even with a heavy lens) should be trivial for it.

Mmm... now I'm perplexed. Assuming throttle stick all the way down is "0% throttle" and all the way up is "100% throttle", and that my rig is carefully calculated (eCalc-style) to hover at "50% throttle", will my stick be half way (i.e. dead-centre on its total travel) at take-off/hover? Your...