I bought a pair of
mini 2 props for my mini to test if the prop geometry is making the
mini 2 faster and more quite. I am a tool and die maker/design engineer and measured everything up. The mini height of the hub is .184 compared to the
mini 2 measures longer at .219. Hub diameters are the same .232. Hub counterbore diameters are .196 for the mini and .168 for the
mini 2. A side by side comparison of the shape of the blades is almost identical with the exception that the
mini 2 is much stiffer when bending by hand. The thickness of the blades measure the same so they must use a different plastic. The screw diameters are .090 for the mini and .093 for the
mini 2. Thread sizes are different. My plan is to make a fixture at work to mod the
mini 2 props to accept the mini screws. I need to do a few more measurements at work. If it works i could make more sets. It may be a few weeks before I would have the time at work to do this so please be patient on the results.