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The higher the energy density the better for VTOL aircraft ....... its all about minimizing weight and maximizing energy for MRs. Several local MR flyers continue to rave about their ThunderPower batteries on their MRs and it seems to me that they do last a long time per flight. I just bought 2...

When looking at the battery voltages when the load is connected you will see a different/lower voltage than when the batteries are not connected to a load. Under load you have to expect the voltage to drop a bit lower than 3.7 volts near the end of a flight. The main thing is that the open...

While working on a client's MR c/w WKM FC, I found that he had 5.22 fw loaded so instead of moving back to 5.20 (known to be very reliable) I moved forward to 5.26. All seems to work well...... but then I realized he does not have the LED indicator with the Bluetooth capability. Can I safely...

The esc servo connectors tend to be a tight fit on the A2 the first few times..... adjacent are two gray canbus type connectors and another one or two that are connected to others components such as the iOSD...... these tend to be less than a snug fit and are just as critical for safe flight...

Not I.... but I settled for the rotating tripod landing gear as used on the Cinestars........ lighter and simpler than the servo controlled retracts and the landing legs never get in the way of the camera field of view. But PID tuning the yaw axis motor requires the entire MR be hung in a...

WKM at fw 5.2 and 5.26 work very well..... my last WKM is well beyond 300 flights now..... unfortunately I sold it after about 150 to move "up" to the A2..... As I don't have a MK system yet I can only speculate as to the differences. Based on what I have witnessed though, I was shocked as to...

From what I recall the answer seems to be yes....

All 6S batteries.

PANt, Are these still for sale? If so, do you ship to western Canada?

Sorry..... all sold.

iOSD data seems to remain subject to intrepretation leading to speculations with bias etc.

I am starting to think there is a problem in the A2........which is making me seriously consider switching over the the Mikrokopter FC system.

I am considering switching over from DJI equipment to the Mikrokopter FC system....... long story! In any case I am not familiar with the Mikrokopter FC systems and components but have Cinestar 8 and Cinestar 6 Aerial platforms that should not be too difficult to set up with MK. So what will...

To do it all right you would have to trip back all the prop tips on both ends of all the props, i.e., 4, 6, 8 and after that the tedious rebalancing work etc. So...... is it really worth it?

Top quality motors but it appears that KDE sells the Castle ESCs according to their web site...... so it is either the ESC or the A2 IMHO. http://www.kdedirect.com/XFBrushlessElectronics.html I do recall there were some subtle warnings on FF Forum re: Castle ESCs made in Mexico that were...

BirdsEye, What ESCs and motors were you using on that setup? If using 22 pole pancake style motors, there are known issues with many motor/escs combos related to "detent"..... sometimes referred to as "cogging". Motors with the very best neodymium magnets are most efficient but also are the more...

It would be good to resolve the cause and effect conundrum here... obviously it is a coax MR config. Looking very closely at the top of the video screen, the 1st indication of the MR spinning occurs just before 4 seconds from the start of the video and we can later see the MR rotating in the...

It's a learning process..... with a target all up weight and target total flight time. Shop online and note the weight of each item in your Excel database and add it all up. Then run it all thru ecalc again and again with adjustments to prop sizes, motors, batteries etc. until eCalc results give...

PDBs = Power distribution boards are made of PCB non-conductive material (not carbon fiber) and then are clad on one or both sides with thin copper that is ultimately etched to create PDB + and - conductive traces which is finally painted over with black paint or epoxy. Caution is needed when...

soler, Since ESCs aren't connected to the flight battery balance connector they have to connect to the main leads. You are probably correct though.... a novice could connect a partially depleted flight battery and ESC would determine a wrong #S value for the battery and make several wrong...