Gray kart is fixed and back on the track. Nephew was happy he got it up to 13.5 mph on the round track.
https://www.youtube.com/watch?v=ATMP-X4BW-Q
Their helmets went on before letting them go faster.
Since the go kart accident Sunday I decided to try my hand at making new spindle arms instead of buying whole new spindle. Most seem to be 1/4 inch thick but I think I might double it. Still got to go pick up some steel.
Here one that is 72" just got to make the z bend. http://www.ebay.com/itm/New-Universal-Choke-Cable-72-Black-Knob-/222243659421?hash=item33bec11e9d:g:7kEAAOSw2s1UublU
You can also find them at Tractor Supply in the tractor parts. If they don't have a z bend you can make one with some pliers but a z bend tool is a good cheap investment to keep in your tool box.