Sonny
I think Cyclone is the only vac that uses the flexible impeller, however that is MY assumption. You know the old "ass u me" conundrum.
Pull up the Cyclone, site it will show the construction of the units. The one I bought as parts had a failed impeller. It appeared to have fragmented while running.
Hopefully it will warm up here and I can attempt to post some pictures of the Cyclone pieces.
You are correct Cyclone went to B&S engines when Tec went toes up.
Appreciate you comments.
JLG