Blade mCPX V1 Helicopter Brushless Conversion Review

 

Blade mCPX Helicopter

 

RC Pro Review by: Tom Zadar

 

Transmitter Setup Guide

See my Transmitter Setup Guides for transmitter setup. The setup guides have all of the transmitter settings needed to make a model completely from scratch.
The Tx Setup Guides have different difficulty settings depending on which setup guide you choose. For Helicopters there are Standard Settings, Beginner Settings, 3D Settings. For Quads there are Standard Settings, Beginner Settings, 3D mode settings.
Each setup guide includes everything needed for setup including Model Type, Swash Type, Servo Reverse, Travel Adjustment, Gyro Gain, Throttle Curves, Throttle Hold, Pitch Curves, Pitch Curve/Throttle Hold, Subtrim, MIX, Switch Assignments, Dual Rate and Expo.
I added a bonus to every setup guide with a Dual Rate and EXPO settings guide I made for Helicopters and Quads.

 

Review

I just got done with my brushless conversion for my blade mCXP V1.
All I have to say is WOW!!! Awesome power! Flight time seems good also at about 5 minutes with the Turnigy Nano-tech 300mAh 35C battery.
The stock tail holds in full pitch pumps.
I punched it in my back yard and the heli shot up into my tree leaves. I was not expecting this at all.
It will take me a little while to get use to the power and then I will try some mild 3D and video it to post.
I used all wowhobbies parts that I have had sitting here for 1-2 years or more (minus thesteve).

I connected thesteve yellow wire to the main motor + plug. Last time I soldered it to the circuit board.

The motor starts very smooth. There is no spinning of the heli even on my smooth cardboard launch pad.
The throttle is smooth and responsive like it should be.
Also there is no motor cogging at all.

I also have the HP05-2 to try with 8T and 9T pinions. As you may know I tried the HP06V2 w/8T pinion also before.

 

Motor:

C05 11,500 KV w/9T pinion. 1.5mm main shaft.

C05 11,500 KV w/8T pinion. 1mm main shaft.

 

BL Converter:

Was using TheSteve mCPX version

 

Update 9-1-11

I switched to the regular thesteve (soldered the yellow wire to the back of the 3in1 on the tiny resistor like others are doing) and I now have full linear throttle response from zero to full throttle!
With thesteve mCPX my throttle was linear but only to mid stick then it hit 100% throttle
and stayed there from mid stick to full stick.

NOTE: You can use TheSteve mCPX version and solder the yellow wire to the back of the 3in1 board to the tiny resistor.

With the thesteve mCPX version I had to set the TX throttle to 20% across to get 85%
actual motor throttle in ST-1 for indoor flying.
Connected the yellow wire to the main motor output pin on the 3in1.

With the regular thesteve when I set the TX throttle to 80% across I got 85% actual motor throttle.
Soldered the yellow wire to the back of the 3in1 on the tiny resistor.

 

 

ESC:

XP-7A-2 ESC

Settings used:

1. Cut Off Voltage: 3.0V

2. Start Power Percent: 29%

3. Advance Timing: (2) Mid

4. Brake Type: (1) Off

5. Start Mode: (2) Soft

6. Cut Off Type: (1) Reduce Power

7. Throttle Curve: (1) Curve1

8. Motor Rotation (1) Forward

 

Head Speed: with the XP-7A standard speed ESC.

4,920 RPM on 8T with the Turnigy Nano-tech 300mAh 35C batteries.

5,670 RPM on 9T with the Turnigy Nano-tech 300mAh 35C batteries.

Head Speed : with the XP-7A High Speed ESC – 15% increase in speed over the original XP-7A.

Here is what I calculate.

5,635 RPM on 8T with the Turnigy Nano-tech 300mAh 35C batteries.

6,520 RPM on 9T with the Turnigy Nano-tech 300mAh 35C batteries.

 

Thrust Test:

97.5 Grams Thrust at full negitive pitch with the Turnigy Nano-tech 300mAh 35C batteries.

 

Flight Time:

Turnigy Nano-tech 300mAh 35C battery.

5 Minutes: 3.74V

 

Weight:

Weight without battery = 38 Grams

Weight with stock battery = 44.9 Grams

 

Pinions:

7T-9T 1mm & 1.5mm motor shaft pinions and many more sizes.
Make sure you get the M0.3 size and gearwheel width of 3mm which is the same width as the mCPX stock pinion.

Select drill / hole (D) in mm to what you want.
If you want the pinion for a 1.5mm motor shaft select 1,5.
If you want the pinion for a 1.mm motor shaft select 1,0.

Select material: Brass

 

 

 

 

 

 

Here is a video of pitch pumps (the stock tail is holding very well) and a video of Startup & Shutdown.
Notice the heli doesn’t spin on startup with the esc settings I am using.

 

mCPX BL (1) Startup and Shutdown

 

mCPX BL (2) Pitch Pumps

 

mCPX Brushless (1)

 

 

 

 

“My text, pictures and videos are Copyright 2009 – 2017 Tom Zadar”