This post is now edited!
In a sharing of information with @samowens44, it was learned that there was indeed a problem with the video that I present here.
Please review @samowens44 video in the link below for proper belt operation. Or as presented later in this thread...
Final Drive Belt Tension Check Procedure
My video should be used currently as an undiagnosed problem.
Updated! My angle drive unit was found to cocked in the cradle which caused the high side deflection in belt travel.
Hey @samowens44
I was shooting some footage for a problem I am chasing and thought this would be a good lead in or follow up for your Belt Alignment and Adjustment videos. This shows why the drive belt is adjusted closer to the inside of the pulley. Belt travel is real. I didn't jump down hard in the vid but I am sure it will get the point across during accel and decel. Watch the gap open and close between the belt and the inner side of the drive pulley.
I have to apologize in advance. The GoPro was mounted directly to the swing arm.
The vibration and wind chop in that area is horrific. It made for a good steady shot for the belt and drive pulley.... the sound,scenery, and Slingshot, not so much.
The first part was shot without the housing and then the housing was installed.