Belt drive toasted

[DA71FX]

Well today I had the 79 lowrider out for a short put, when about 15 minutes from the house it decides to rev but not go. So after calling a friend to come get me, I get it home and open up the primary and I am greeted by a primary belt with no teeth. It would appear that someone did a belt drive conversion at some point on this relatively low mileage FXS. But, the belt was a little oily and there was no ventilation in the primary.

[Fugawee]

Ugh...

[76shuvlinoff]

If it were me I'd go back to a faithful chain.

[FSG]

I'd be tempted to vent the primary and put a belt back in there 

[motorhogman]

I converted my 73 Super Glide to primary belt drive. No oil in primary and vented the cover.  After tearing up a couple of Primo belts that used an idler system I switched over to Karata. Years and thousands of mile later no problems. Most all 2 up riding.  Sold the bike o a friend and he ran it until he passed away a few years ago. I can tell you he wasn't easy on it either.

[billbuilds]

Looks like someone did some clearencing to two of the inner primary cover screw mounting bosses on the bottom of the inner primary. Were the cover mounting screws shortened as well or were none used in those two places?