Aero-nuts used to sell some good quality brushed motors, but they have switched to all brushless now. You can still find their motors around if you look real hard. They also sell another motor that's higher quality than most OEM motors: http://www.aero-nuts.com/product_rev...&reviews_id=33
. I've used them on a Lama V4 with excellent results. They like low resistance, so I don't know how well they would work in this application.