mCPX

A motor's top speed (RPM) is determined by several things but one that is useful to be able to discover is the number of poles. Normally we don't need to worry about this as the KV value gives a pretty good idea of what the motor will do in terms of revolutions per minute per volt (RPM/V). Sometimes however it's useful to know.. like when setting up governed head speeds in BLHelisuite which I use on the BL mCPX.

Here are the settings I'm experimenting with at the moment:

The aim of this particular setup is to find the best settings for 3D flying hence the high RPM. Higher RPM means snappier cyclic response and a little more energy in the rotor system when entering a flip or roll i.e. more RPM at the end of the maneouvre hopefully.

A quick how-to on updating the Origin/HobbyKing double brushless ESC to the latest BLHeli firmware using BLHeli Setup software.

Today I'm proving the principle that to fly is to crash. During a bit of tail first flying I got the dumb thumbs and while trying to avoid crashing into a tree I managed to pile the mCPX into the ground ...... tail first. The mCPX will take an enormous amount of punishment but they don't like crashing tail first:

The mCPX is a very popular airframe for modding and here at Heli Hack we couldn't resist having a go at improving what is already one of the best value for money advanced trainers.