Recent content by Ron Armour

The is basically a new P4 with about 5-6 hours on it. It is in flawless condition. Included: All standard accessories P4 case and shipping box 2 batteries Complete ND filter set $975.00 Paypal and shipped to US only

Looks like a pretty risky trip. Did you have permission to do that? Any kind of failure that resulted in the drone dropping on someones head would have proven very expensive.

Left stick to right bottom corner and hold down the RTH button

For me I use a ND16 in very bright conditions.....that gives me a speed of 60 when shooting 30 fps. ND8 for cloudy bright and a polarizer in overcast conditions. You can rotate the polarizer (1 1/2 stops) to fine tune the speed.

Try it, the worse you will see is some glitchy video.

Did you try a full reset, then see if it allows you to go custom. I did this and it seems to have gotten rid of some flicker I had.

You should not have to be forced to upgrade. I think this will get fixed. I changed my channel to custom today and lowered the video rate to 4. Got no video glitches and the pic quality was fine. Did not check range as I never fly very far.

I have read of several people reporting a similar issue in the last few days. I see a flicker randomly since getting my new P4 a few days ago.....with the latest updates and calibration. None of it show up in the video so it appears to be a RC problem.

If it continues try reloading a fresh app.

You can get this effect with a iPad mini ......not fast enough to keep an up to date image. Go to an iPad mini 2,3,4.

You guys are missing the point here......Gravity is a constant regardless of what speed we fly. We are trying to determine the best speed to fly to get max range. To do that we can ignore gravity because it is always a constant. The important factor is air resistance because it changes with...

"One factor that isn't a big concern in cars is gravity. That's a bigger factor than air resistance for a Phantom." If we are trying to determine the ideal speed for max range, gravity is not a concern since it does not change regardless of speed. Air resistance changes big time with speed.

For a car your best efficiency is operating at max torque. I have not seen any efficiency curves for a P4, but I know that electric motors create max torque at zero rpm so they are much more efficient than a gas engine. As an engineer my best guess for max efficiency on a P4, or P3 for that...

Air resistance is your single biggest enemy whether you are a car, truck, baseball, arrow or drone.It takes over 700 HP for a car to reach 200 mph, mainly to overcome air resistance. Planes fly at 30K feet because of very low air resistance....the air is less dense. A car will get about 40%...

Fly a drone into a 20 mph headwind and watch the battery level...........this is the same thing as flying 20 mph faster. To get great mileage, draft your drone behind a big truck like I did with my Tesla when it was low on energy. Same physics apply.