Results are in...
It is worth doing the geometry involved with anchor scope. If you lay out a 2:1 scope with the rode pulled bar taut the angle of pull is nearly 45 degrees. A 500 pound pull on the rode would create a vertical pull on the anchor nearly equal to the horizontal pull.
OK, I won't have the video for a while, I really suck at making them, and I just don't have the time right now but here are the results. I may just upload it via Picasa..
Definition: "Set" is defined in this case by me needing to stop the truck for fear of denting the roof. If I had continued damage to the vehicle would have occurred..
2:1 Setting on Hard Sand
CQR = No Set
Bruce (laying on side) = No Set
Bruce (upright) = Set
Rocna = Set
4:1 Setting On Hard Sand
CQR = No Set
Bruce (laying on side) = No Set to Partial set
Bruce (upright) = Set
Rocna = Set
I used my wife's truck and ran a line from under the front bumper, over the roof and then to 8 feet of chain. The roof is approx 6.5 feet off the ground, when protected by a Taylor Made fender, so 2:1 scope was 13 feet from where the line came in contact with the vehicles roof to the shackle at the anchor.
The shackle end of the shank on the CQR remained within 6" of the ground at all times, even with only 8' of chain at a 2:1. The hinge however lay totally flat, and never budged off the ground, leaving the tip of the anchor in a constant plane with the ground at all times. The attitude of the shank +/- 6" changed nothing at the tip of the CQR and 2:1 added nothing to its setting performance.
I have now tested the CQR at 2:1, 4:1, 7:1 and a basically flat rode of perhaps 15:1. Nothing has changed, it has refused to set now in seven out of seven attempts. We must remember this is a HARD sand only comparison.....
At 4:1 the shank of the CQR barely, if ever, left the ground as I have described from my visuals when diving.
Shank angle myth busted...
P.S. I am uploading the 4:1 video right now and it should be up in an hour or so..
Here's a still photo from the 2:1 test. Sorry for the crappy quality..