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> Otherwise there certainly was the VW type 411 fastback with the > type 4 pancake (which is rotary, just not Wankel) engine. > I think this just confuses the issue Jim. I appreciate there is a rotary engine in the aircraft sense that has separate cylinders and pistons, with a rather complex arrangement of crankshaft, but I don't think a 411 flat four really counts as a rotary engine any more than a Type 3 engine does. In car applications, I would consider a rotary engine to be a Wankel engine, ie there are no separate cylinders, but combustion chambers are shaped in a ring of metal and a co-axial lobed rotor spins within that ring. One of the major benefits is the lack of heavy reciprocating parts, allowing greater smoothness and higher rpm. But you know all this anyway. Dave. UK VW Type 3 & 4 Club http://www.hallvw.clara.co.uk/ ------ ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe