[suicideneil]

1. 24/58, though I'd suggest picking up all the available spurs for the emaxx 3905 & jato3.3 to experiment with.
2. Nope.
3. Smooth, dont really need a heatsink, only makes gearing adjutment harder due to larger diameter motor.
4. See above. Reported temps with even the 3300kv 50mm medusas are great in a 3905.
5. Nope- they are bonded to the motor at the factory, not a loose item you can order seperately. Best to use some cheap clip-on heatsinks & thermal grease to get the maximum heat transfer if you decide you need/want some heatsinks later on.