Very nice build I've got $50 into the frame $100 in motor $60 I'm tires $40 in nitrous kit so far but I'd love to fix these bearings I just don't know how to remove themLooks like a Carter Brothers go kart. I recently rebuilt one like yours except it is a 2 seater. I had the same problem with one of the hubs. I had to cut it off. Bad news is those hubs are not made any more and if you do find one, they are pricey. Check out this link on how I fixed mine.
http://www.diygokarts.com/vb/showthread.php?t=34607
Is the shaft diameter 3/4 bore so all I'd need to do for the hub is get a 4 lug hug with a 3/4 bore and I should be good right I think the distance was 4 inches diagnol between the lugsLucky for me, my bearings were still decent, but I did think about changing them anyways, ended up not doing it cause the axle would not budge and I did not want to damage it. First you need to remove the axle, be careful not to damage the threads. Once you get it all the way out, get a bar smaller than the 3/4" bore on the bearings, 1/2" should work. It needs to be long enough to reach the opposite side of the axle casing. Then tap out the bearing from the inside thru the opposite side bearing hole, hit it in a crisscross pattern. Hope this helps.
OK I didn't realize that the post had multiple pages it's almost like I followed in your footsteps the whole way till now lolMy hubs, and likely yours are on a 3-1/8" bolt pattern. The problem is, this bolt pattern is unique to Carter Bros. I couldn't find a direct replacement. If you read the whole thread on mine, you will see that I used a 3/4' bore with 3/16" keyway hub from BMI. Then I modified the one rim to accept the hub, as the bolt pattern on it was 2-13/16". It was the closest replacement I could find.
Hey bud I know I've asked a million questions but could you link me to the hub you bought so I buy the right one to modify my rims to i'd be super great full and I'm not sure if you've removed the shaft but should it just slide out or do I have to knock it outMy hubs, and likely yours are on a 3-1/8" bolt pattern. The problem is, this bolt pattern is unique to Carter Bros. I couldn't find a direct replacement. If you read the whole thread on mine, you will see that I used a 3/4' bore with 3/16" keyway hub from BMI. Then I modified the one rim to accept the hub, as the bolt pattern on it was 2-13/16". It was the closest replacement I could find.