Project E-Mini Bike, Using an Outrunner

[Metallover]

I got my lipos today!

It got a little hotter then I'd like tho.. The windings got up to 175+ after a 30 second run at full throttle into the wind. It was around 160 after full throttle going in other directions. I am going to apply some thermal grease between the motor and the aluminum mount and also add a small heatsink to the outside of the motor where there is a flat spot.

Top speed was 20.9mph. Yeah! Pretty dang happy about that. It felt really fast and pulled all the way up there. Killer acceleration, but I have to go slow or something goes wrong. It might be loss of sync, but there isn't screeching sounds. The battery wasn't fully charged at the start of the run and it ended up at 3.9v per cell after 9 minutes of short runs and covering 1.4mi.

I also had a soldering mishap putting fake-deans on the batteries. The iron slipped and shorted out the pack making a huge, bright spark. I don't think the pack was damaged so it's all good. It made a nice wire-shaped spot on my tip along with a less-sharp end.










And I guess I only have one picture of my new lipos. This is how I charged them before I moved to the concrete floor.



The new lipos weigh 12 pounds less then the old ones with wayy more power. The scooter is pretty dang light now.