I received the Alien 5065 120KV motor on Friday. (on the right). Half the weight of my favorite motor. (The large black one, previously orange...) In "theory", the Alien should make close to the power of the big Turnigy... We'll see...
I also have some concerns about the open frame design and dust. The bearings on all these motors are Shielded, not Sealed. I suspect at some point I'll need to replace bearings with sealed units (Boca Bearings...)
Note the short shaft on the Alien. Not enough room for the collar to retain the sprocket.
Drilled and tapped the shaft for an M3 Cap Screw. (I did cover the bell in plastic before machining)
Temporarily mounted the motor to my existing mount, for Testing Purposes Only. If I like it, I'll need to make a new mount, as the Alien bolt pattern is totally different than the Turnigy motors, and I can only catch two bolts on the existing mount.
Went for an exploration ride Friday with a couple of friends. I had the only E-Bike
. Lots of long steep (22%) loose gravel grades. 11 miles, 1700 feet of climbing. I cleared all the grades (barely), the really strong rider did not clear all of the grades, and the third rider, who is somewhat stronger than me, had a tough time. If I had been on my non E-bike, I would have had a bad day... I used 87 Watt Hours, out of 100 WH available in my new Zippy 4S 8AH pack. I carried a spare 5.8AH in the fanny pack. I'm liking this light weight setup a lot - its not too hard to throw the bike over gates & fences...