Stretched Carter Bros. Econo Kart

[DaiSan76]

What is your wheelbase/length ratio? I have a kart that is similar length that I'm working on.

I had Negative castor for my first test ride, I am in the process of fixing that. Taking a break to let my grinder cool down.

 

[TXST8tj]

I had the same thing with my thunderkart...it was good at slow speeds, but twitchy and hard to keep straight when going fast. Had to keep a death-grip on the wheel, lol.

I'll bet you've got either zero, or negative caster. Take a look at your kingbolts (the ones going through the spindles, indicated by the yellow lines in the pic). It may be the camera angle, but it kinda looks like the left one is leaning forward (negative caster), which is bad.

You really really want them to lean backwards relative to the ground (positive caster) so that the top of the bolt is behind the bottom of the bolt. Anywhere from 10 to 15 degrees works. This makes it more self-centering and stable at speed.

All I did to fix mine was heat the arm where I circled in the pic, then twist it back with some large channel-locks.

Made a WORLD of difference!

Thanks! That is good information! I will have a look at it.

What is your wheelbase/length ratio? I have a kart that is similar length that I'm working on.

I have no idea, but I will take some measurements in a bit.

 

[used2jeep]

Nice job there TXST8tj. It looks to be coming along great. May I ask a favor of you to post a picture showing how you are connecting the throttle rod to the throttle cable?