N20SA22C

Why is it that for the last 1-2 years Mazda Kept showing us pics of a Honeycomb type structure for the rotor. They plastered it everywhere and now are using a stainless steel rotor that is more similar to the original design? Not to say the original design was bad but did they encounter problems with the new one? Any insight would be appreciated.

Kyle Lancaster--Double Agent Salesman

zoom44

this was covered elsewhere on this forum awhile age but to save you some searching-the gist of it is that those honeycomb rotors that you speak of and the ones they show now are the same ones.the honeycomb ones are actually cutaways of the regular rotors so you are looking at the inside and not the outside face :D

amgtortoise

The honeycomb cut-away rotors were indeed Stainless steel rotors! Japan/USA Mazda develop the use of new material for multi-rotor engines in late '80s to reduce weight & friction by use ceramics seals (guru designer Dr. Iannetti & engineer Rick Engleman). It's nothing new, but it's new to the consumer public. I'm glad to see Rotary racing technologies are being past to the consumer after a decade of R&D.

Kenichi Yamamoto & Rick Engleman are considered the GODs in the entire world of rotary engine.

wakeech

the rotors have always been hollow: they have to be so the e-shaft can spray oil all over the insides to cool it. seriously, they've always been hollow cast, and yeah, they're just cutaways

N20SA22C

Very helpfull, I have been around RX7's since I was three and drag a 1st gen and didn't know those were cutouts. I knew they were not solid but didn't put it together. Thanks again.

Kyle Lancaster--Double Agent Salesman

wakeech

... those 1st gen rotor don't FEEL like they're hollow, do they ??

N20SA22C

I have a Rotor and housing in my office and it is quite heavy, Do you know the weight of the new Stainless rotors? They are beautifull. The old ones were over 9 lbs correct? thanks

Kyle Lancaster--Double Agent Salesman