In various sources, I have found that maximum speed of the Reggiane 2005 is 678 km/h at 6950 m. But in HPM 11/2003 (article „Reggiane Re 2005 Sagittario” by Pejcoch Ivo) there is only 628 km/h at 6950 m. Also on that page:
http://fire.prohosting.com/hud607/un...005/index.html (see E-mail message one)
there is 628km/h for M.M. 494 prototype with originally German-bulid DB 605 engine (according official R.A. test of September 23rd 1942). 678 km/h are mentioned only as theoretical preliminary. Climb rate is much less too...
Does anyone have any additional information about that difference ?