Live axle installation mystery!

[09mgraber]

Hi All, need some help with a mystery.

I just helped my neighbor install the Gopowersports live axle kit on his yerf dog two seater. Pretty standard installation- left the engine in the factory location, with the sprocket outboard and the brake disc/caliper inside the frame. It works great, but here is the rub. After a week, the new white rear wheels that came with the kit are absolutely COATED in black brake dust, along with the frame, valve cover, even the pull cord is dirty with the stuff. It's either brake dust, clutch dust, or tire dust.

The brake caliper isn't too dirty and the pads look fine, and here's the weird part- the front wheels are also coated in this dust. Nothing else up front is dirty. The cart has no front brakes and the front wheels/steering are unmolested from stock. Bearings feel fine. It's a mystery to me how the front wheels could have brake or clutch dust on them. Unless it's tire dust? We measured very careful to ensure the axle hangars were perfectly square with the frame and it rolls true with no extra resistance. It's really excessive.

If anyone else has experienced this I'm all ears!
Thanks

 

[madprofessor]

Hard cornering on the street drags/pushes the rubber tire across the surface. They're supposed to lose some rubber trying to hold on to the surface and not slide. That's how tires go bald, all the rubber wears off onto the street. Some of it can get onto any part of the kart, and isn't that tire rubber that's wearing away usually a black dust?

 

[Budget GoKart]

road grime and tire dust my yerfdog did it in te city and now out in the country its covered in dirt dust