I have been fighting with chain adjustment since I Do NOT run a tensioner on the motor drive chain; I came up with this option after looking online for tensioners for the pedal side of the bike. Just did not like what I found so I decided to fab my own. I used 6061 aluminum 3/16, drilled some hole to lighten it up some and also make it look good, added the kit roller to it. If all works well it will let me run some slack in the pedal and have full adjustment on the drive side. It’s a simple project with the right material and tools.