<font color=blue>Maybe one of our resident engineers can chime in </font color=blue>
John I'm touched. Here at work they usually want the engineers to shut up so they can get on with things /w3tcompact/icons/wink.gif
I think it's pure preference in how the ring part of the clevis hangs. Assuming a vertical hole in your drawbar, the standard clevis will sit vertically and the twisted one will sit more-or-less horizontally. For hooking a chain, either will work but there may be other applications that require a specific orientation.
BTW, here's some engineering conversions for you /w3tcompact/icons/smile.gif
Ratio of an igloo's circumference to its diameter: Eskimo Pi
2000 pounds of Chinese soup: Won ton
1 millionth of a mouthwash: 1 microscope
Time between slipping on a peel and smacking the pavement: 1 bananosecond
Weight an evangelist carries with God: 1 billigram
Time it takes to sail 220 yards at 1 nautical mile per hour:
Knot-furlong
365.25 days of drinking low-calorie beer because it's less filling: 1 lite year
16.5 feet in the Twilight Zone: 1 Rod Serling
Half of a large intestine: 1 semicolon
1000 aches: 1 kilohurtz
Basic unit of laryngitis: 1 hoarsepower
Shortest distance between two jokes: A straight line.
(think about it for a moment)
453.6 graham crackers: 1 pound cake
1 million microphones: 1 megaphone
1 million bicycles: 2 megacycles
2000 mockingbirds: two kilomockingbirds (work on it....)
10 cards: 1 decacards
1 kilogram of falling figs: 1 Fig Newton
1000 cubic centimeters of wet socks: 1 literhosen
1 millionth of a fish: 1 microfiche
1 trillion pins: 1 terrapin
10 rations: 1 decoration
100 rations: 1 C-ration
2 monograms: 1 diagram
8 nickels: 2 paradigms
3 statute miles of intravenous surgical tubing at Yale University Hospital: 1 I.V. League
100 Senators: Not 1 decision
