I spotted a Sears twin fan self propelled at a junk store near here. Unfortunately the guy has let it sit outside but under an overhang so it's probably gotten somewhat wet. Didn't have time to try it but was wondering if these are somewhat hard to find. I've already got a couple of different Sears twin fans and a Singer one.. never knew they had a self propelled model though. Also lucked out and found a few bags for my 75 Lady Kenmore self propelled bag #5026....they don't make them anymore whew..