Drive motor options

[Ellis]

Brushless motors go plenty low enough in rpm. Lower than equivalent diameter motors by far in some cases; the 775 can motor that Banebots use do 20,000rpm at nominal v.

The motors themselves are suitable, the issue is with speed control. It's hard to find a brushless speed controller that will not only do reverse, but not have a delay between fwd/rev. Some RC-car speedos do this, but they're generally lowish voltages (3-4s). Also, brushless motors can't just have their polarity switched to bang into reverse like brushed. They have to come to a complete stop before being able to change direction, further reducing drive responsiveness. Not many have experimented with brushless drive as a result, though once the speed controllers exist, the potential is huge. They are massively powerful.

This Australian build thread shows a machine with brushless drive, but there isn't much detail: http://robowars.org/forum/viewtopic....=asc&start=615

[Eventorizon]

This Australian build thread shows a machine with brushless drive, but there isn't much detail: http://robowars.org/forum/viewtopic....=asc&start=615

He recently put this info up (Directly and indirectly)...

ESCs: Trackstar 80A brushless car controlers

Motors: NTM Prop Drive 42-38 750Kv (Picture matched and found here: http://www.hobbyking.com/hobbyking/s...arehouse_.html)

Reduction: 10:1

Wheel Dia: 102mm (Taken from ebay. Same width, hex and scale so I am assuming the OD matches too. http://www.ebay.com/itm/4PCS-17mm-Hu...-/360669106232

Provided the ESC's work off the shelf, this should be easy enough to reproduce and modify. I have to say that guy has some serious skills. Check the 43rd page, all those designs!

Or here: http://i34.photobucket.com/albums/d1...psba4b0087.jpg

[plargen]

This Australian build thread shows a machine with brushless drive, but there isn't much detail: http://robowars.org/forum/viewtopic....=asc&start=615

if you look further back he also made this