Finally got mine finished.
Took her for the maiden voyage yesterday on the front street. About 5 minutes in, she stopped going. Pinon gear came loose and fell off. doh. Some blue loctite and 20 hours later, took it out a field this morning and it ran great. Between yesterday and today saw about 30 minutes of run time on a single 5000mah pack - with multiple full throttle runs in grass. And up and down a big hill.
Not too shabby.