KB28-57-09L Brushless Motor
Shaft Size: 3.17mm?~12mm
Motor Dimensions: 28mm?~48mm
Idle current: 1.8A
Max Amp: 45
Dimensions do not include fins.
Max Currents (A)
Length B (mm):
Can Length D(mm)
Unit Weight (g):
Total Length E(mm)
Runs cooler than original velineon in mini erevo!I plan on using this with a 5:1 gear box, a 14 inch folding prop with a headless spinner for my glider. I wish HobbyKing had gearboxes.Does not work with hextronik 120A ESC. I've tried 2 units, changing all parameters.Tough little motor. made a motor mount and have been running them in a pair of crt.5's fast lil bugger!I order this one for my 1/10 stampede truck, and a super simple 100A speed controller. If you can find a cheaper brushless combo, let me know!
The motor is great, I only had to drill some extra holes to hold it into the truck's gearbox, easy thing.
With 6 ni-mh cells, the truck has lots lots lots of power. The motor is pretty cold, and the ESC too, The only drawback is the brake of the super simple ESC. but i can live with it )Excelent motor for mono1 boat.
After cutting fins on turning-lathe (except first and last one) it is easy to make cooling jacket from thin copper metal plate.
Running with 3s2p A123 and K36 prop, good speed and over 7 minutes of ride.
Will try K37,5 prop next time.Quality is superb for the price.
Io at 12 V is 4 A (not 1.8 A) measured with Kontronik Jazz 55-6-18 controller.Fantastic for easy glider with original equipment
Good motor for the 3 in ducted fan, fantastic thrust, but very amp hungry as shown in following test:
4S 2P 2100 Polyquest:
975.3 max watts
3S 2P 2200 Zippy:
823.3 max watts
Almost overheated my 60 ESC... also tends to really heat up.
With the 3 inch Hayoe DF, this motor will work well likely with a minimum of 80 Amp esc, and 4S2P 2100 Lipoly.