Recent content by SJBrit

Well, I'll grant you that in the frame of reference of a rotating object there is indeed a centrifugal force that is useful to think about for calculation purposes. But I did choose my words carefully: there is no centrifugal force in a physical sense. The only physical force acting on a...

Just for the record, there is no such thing as centrifugal force in a physical sense. The centripetal force is the force required to keep an object spinning in a circle and is directed along the radius towards the center of the circle. No force pulls the object in the opposite direction. So, in...

Interesting. I've just been reading up on winglets for wind turbines. The question I suppose is whether the advantages outweigh the disadvantages on small, high RPM props. The winglets in the turbines reduce friction due to tip vortices, but then they add friction (drag) of their own. They also...

I'm not sure it would help. You'll notice that winglets are only seen on swept-back wings. The reason is that when a wing is swept back there is a tendency for the airflow to be partially along the wing towards the tip. That flow reduces the flow normal to the wing and therefore decreases...

PM Sent.

You can't do it with the Phantom version of the Naza AP - only with the full Naza M V2. They've locked out everything but DBus on the Phantom. Maybe his would help: http://www.goodluckbuy.com/rmilec-signa ... er-v2.html. I have a brand new one, unused I can sell you if you'd rather not wait for...

That's great :D It does get easier as you build confidence. But FPV with iOSD is really the thing you need to have confidence when flying BVR. That little diamond hovering over the launch point in the display is a very friendly sight.

Just to confirm - I'm not quite sure what you did. First, calibrate the physical sticks in the Tx in the RC assistant. Then calibrate the servo throw in the Phantom assistant. Did you go through both of those steps? In that order?

Sounds like you need to calibrate the sticks. Three fast reds is the error for the stick centers being too far out of spec (which is why the motors won't arm). Calibrating the sticks in the Assistant should take care of it.

OK - gotcha. Just wanted to make sure you knew that you would have a null pointing out left and right that way.

And yes, I realize I'm not answering your original question but I think you are asking he wrong thing. What you really want to know is how to mount your video Tx and antenna for best reception. Cut a strip of carbon fiber about an inch wide and run it from one front leg to the back leg on the...

The antenna pattern for the cloverleaf is like a donut with the hole in the direction of the feed. If you point it straight out sideways then your donut is vertical and oriented like a wheel. That gives you coverage in front and behind, and also above and below. That's not good since it gives...

What kind of antenna are you using? People often point them in the wrong direction. Mostly they need to be pointed straight down - mine runs down one of the legs which gives me the best 360 deg coverage.

That's good to know though - my H3-2D is just sitting on a shelf now that I have the 3D so I guess I'll send it back for calibration and just deal with the wait. But really, how can you be 4 weeks behind on check-ins? Repairs I understand but how long does it take to acknowledge receipt of a...

I'm sorry I don't have amy specific advice to offer except that we should all be rather careful about flying around such places. Energy facilities count as Critical Infrastructure and are subject to significant security and anti-terrorism measures http://www.dhs.gov/critical-infrastructure. You...