18:5718:57, 6 November 2015diffhist+54 m
BMW R12 and R17
Added a comment about private owners - existing reference seemed to imply that there is only one left, and there are still a fair number in existence. E.G http://www.bmwr12.com/
18:5218:52, 6 November 2015diffhist−185
BMW R12 and R17
More substantial edit than the others. The previous reference seemed to confuse the U-Joints on the drive shaft with the brakes.
21:3121:31, 6 October 2014diffhist−242
Soviet submarine K-129 (1960)
Deleted Blackbird reference. The only SR71 lost in 1968 was actually an A12, lost over the South China Sea, In June. Well after this event. Referenced in http://www.sr-71.org/blackbird/losses.php
18:2018:20, 21 February 2014diffhist+34
Schooner
As worded, the difference in efficiency was exaggerated. The argument could have applied to a Yawl rig, but was exaggerated for a Ketch.