I finally got the Viper Buggy motor in. Packaging is excellent and delivery service is top notch. I will post more once I get some free time.
It's rated at 1800kV
2 Pole rotor with 3 slot stator
5mm Pinion shaft
7.35mm Rotor shaft cut down to 5mm in the front
4.47mm Rotor shaft in the rear. So rear bearing is smaller than the front.
45.04mm Magnet length
13.82mm Magnet diameter
The motor feels notchy.
The back cover is plastic.
The sensor is replaceable.
The rear has a rubber seal.
Assembly is very good.
Front motor screws are 2mm and the rear are 1.5mm hex.
Heavy copper tabs.
Front has shims and spring assembly.