It's worth adding that this kind of design is not new. According to Wikipedia "In 1911 the Macomber Rotary Engine Company of Los Angeles marketed one of the first axial internal-combustion engines" of a similar design. The question is why they never really caught on and I've read just recently that the major problem with this design (swash or wobble plate engine) is not with cooling or lubrication but the amount of torque that the plate can withstand and transfer. For that exact reason this design has been adopted in A/C compressors. It works much better when the shaft is driven pushing the pistons and compressing a gas than the other way around. In short, it makes a great pump but not so great engine. Tom in PL -----Original Message----- From: Bob Brandys BobB@xxxxxxxxxxxxxx [dmcnews] Sent: Tuesday, November 25, 2014 4:34 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Re: New JZD engine? This engine design was a extension of the “swash plate” design in air conditioning compressors. The main challenges in this design are cooling and the amount of pressure the plate could handle and convert into rotational torque. This concept works well with total submersion in AC coolant and the little torque necessary for compressing a gas, but the forces for moving a car and orders of magnitude larger. [cut] ------------------------------------ ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: dmcnews-digest@xxxxxxxxxxxxxxx dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/