Display MoreNow that I read about the sand.....it could have ground off some of the contact surface of the belt and the pulleys....which could be causing some of the noise....maybe the noise is from the pulleys being “squeaky” clean...
Could some of the sand worked it’s way into the bearing? And gouging up the axle surface....
Before I know the real reason for what I’m about to say....I wondered why the mechanics were always “wasting” all that grease when I saw it squirting out of the bearing onto the ground. I mentioned that to a guy and he promptly informed me the reason for pumping all that grease until it was squinting on the ground was to “flush” out all the dirt that could be in there causing damage.......
I’m thinking the bearings and axle should be carefully inspected for sand damage....it doesn’t take much to scratch up a polished surface.
With all of the stress put on the two axle bearing just from normal operation......doing burnouts has to really stress them.
Watching the slingshot commercials with them promoting doing donuts......it’s probably a scheme to void your warranty... after looking at your axle and bearings, drive belt and pulleys and angle drive......we can tell you’ve been doing warranty voiding donuts...sorry....
Great observations, I can't disagree with them and they might be a factor to the axle bearing which is now the clear suspect.