As I progress with my build I am doing research into building my own brushless gimbal frame using spare carbon fibre and control based on the Alex Mos board http://www.simplebgc.com/eng/. I have spent the last week looking at suitable motors.
Looking at Zenmuse and the AM gimbal the idea of flat dc motors was appealing aesthetically yet expensive on the basis of purchasing very good Maxon motors that would not require me rewinding the copper. Most third-party manufactures of complete AM brushless gimbals use these motors. From a DIY perspective 40 GBP (60 USD) is quite expensive.
I also knew that there were potentially better motors out there that have higher resolutions. Ie piezo motors used in autofocus SLR units, engraving machines, medial machinery. The advantage is the higher resolution, response speed and power-saving features. A supplier in the UK of the rotary motor manufactured in Sweden http://www.piezomotor.se/products/rotary/ quoted 1,200 GBP for the 50mNm and 600 GBP for the 80mNm.
However I have now ruled this out as the distributor has informed me that I would require a 4 phase motor driver to control the motors.
Other than using a sub $10 Turnigy low kv/ low profile motors and rewinding the copper has anyone out there found a better alternative high resolution motor for their brushless gimbals?