Scott06
Admiral
- Joined
- Apr 20, 2014
- Messages
- 7,045
The blade shape , size , and rake are very different from a Revolution 4 so doubt it’s an attempt to copy. It just didn’t perform any different than a michigan vortex, which makes the published info on it look like BSThe Spitfire is Mercury's attempt at building a Rev 4 out of aluminum. So it doesn't surprise me the thicker aluminum 23 matches the 21 steel.