Although kart racing suffers in general from being a mechanised pastime peopled by bankers there are areas of concern as raised by goman. These centre almost entirely around the use of 50 mm axles. There are numerous pics about of rear wheels, with a foot of axle attached, in flight. Not surprising really a light gauge tube with 6 or 8 mm holes drilled at points of highest stress. RI tells us he's only had one wheel come off a kart . That's one more than I've had but then I've never had a 50 mm axle. Last week he was telling us he'd never been to PFI without seeing an axle failure! K nuts ,impact guns.What's wrong with a Nyloc a plain washer and a single hex socket specially for the job, and use it everytime you go out. You can't cos it's a 50mm axle. So the stresses are higher because the tyres are stickier. 2 answers to that, one is strengthen the axles, the other is also sensible. Apparently you should change the axle for new every season, month , between heats? Makes it more like ' The formula one '?And of course the wider the rear the faster you will be ,obvious innit, so the hubs are hanging over the axle ends. WxLcubed.Yes plenty of 'own goals' but that's not the whole story.
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