Many of you have heard about the Blade mCPX ‘grommet mod’. The problem is the ball links that connect to the swash plate are not very tight. During flight there is a little bit of play between these ball links and the swash plate. The result is unwanted vibrations.
In the box for the Blade mCPX, you were given some extra canopy grommets. These are tiny tiny little rubber washers. You can take these washers and put them on the swash plate balls, then put the links on. This causes a very snug fit between the ball link and swash plate ball….eliminating vibration. See photo below showing where the grommets go.
After each flight, I need an easy way to measure the battery voltage of the 1S battery that the mCPX uses. This is easy to do with a 6S pack, but much more difficult with these tiny 1S battery packs. I created a simple battery harness that allows me to directly connect the 1S battery to my voltmeter.
Take the Blade EFLA7002UM adapter lead and clip off the end (see photo below).
Strip the wires.
From Radio Shack (Source), purchase two banana plugs. Screw them on
I’m flying my Blade mCPX using the included Spektrum DX4e transmitter (RTF bundle).
Yesterday I was flying, about 1 minute into the flight, the helicopter dropped like a rock straight down (about 10 feet / 3m). Then the DX4e beeped and the LEDs flashed.
Fortunately, the helicopter landed in tall grass, so no damage. I checked the main gear for slop and verified it was still aligned with the shaft key. No slop and the gear was still aligned with the key.
I turned the DX4e off and back on. Power cycled the mCPX and continued flying with no issues. It could be sunspots…or something else!
Does anyone know what happened? My DX4e is flagged for update based on the current recall (DSMX transmitters operating in DSM2 mode). It this what the recall is about?
2011-08-17: After fixing the following issues with my Blade mCPX:
Rebinding the TX with the heli. This is very tricky to do. It took me 4-5 tries to get it right.
Main gear has not rotated on shaft.
No slop with main gear on shaft, none!
I am finally able to take it out for a flight. This is my first ‘true flight’ with this heli.
I’m using the included RTF Spektrum DX4e transmitter. There is a bit of wind, but I’m flying with the ‘forward flight blades’, so no problem.
A few more tips:
Power on the DX4e.
Wait 5 seconds to let it ‘boot up’.
Attach battery to mCPX.
* the 5s wait ensures a good ‘binding’ with the DX4e *
Don’t touch the mCPX while it powers up.
* If you touch it, you will confuse the FBL controller