What does the Dock "A" Cable do?

Pricestavern · 10-06-2010, 10:47 AM

I think a picture of what is being discussed would be infinitely useful in helping those of us who are having trouble understanding the physics involved here. Can anyone supply a picture of the A-frame and Cable?

jmen24 · 10-06-2010, 01:54 PM

Quote:

Originally Posted by Pricestavern

I think a picture of what is being discussed would be infinitely useful in helping those of us who are having trouble understanding the physics involved here. Can anyone supply a picture of the A-frame and Cable?

http://www.docksource.com/wp-content...Appe-5-05C.jpg

The line being discussed can be seen just under the A frame.

RI Swamp Yankee · 10-06-2010, 02:27 PM

I believe jmen24 is correct in that it reduces the sag. I think it also reduces any lateral (side to side) movement near the center of the A. The length and narrowness of the A makes it more like an H. The tension of the cable could reduce side to side the bending of the A legs ..... maybe.

10-06-2010, 10:47 AM	#1
Pricestavern Senior Member Join Date: Oct 2006 Location: Valencia, Spain (formerly Rattlesnake Isle) Posts: 389 Thanks: 135 Thanked 142 Times in 82 Posts	Does anyone have a picture? I think a picture of what is being discussed would be infinitely useful in helping those of us who are having trouble understanding the physics involved here. Can anyone supply a picture of the A-frame and Cable?

10-06-2010, 02:27 PM	#3
RI Swamp Yankee Senior Member Join Date: Jul 2002 Location: North Kingstown RI Posts: 688 Thanks: 143 Thanked 83 Times in 55 Posts	I believe jmen24 is correct in that it reduces the sag. I think it also reduces any lateral (side to side) movement near the center of the A. The length and narrowness of the A makes it more like an H. The tension of the cable could reduce side to side the bending of the A legs ..... maybe. __________________ Gene ~ aka "another RI Swamp Yankee"

The Following 5 Users Say Thank You to Pricestavern For This Useful Post:
ApS (10-06-2010), Grady223 (10-06-2010), Lakegeezer (10-06-2010), NoBozo (10-07-2010), Sunrise Point (10-06-2010)

The Following User Says Thank You to jmen24 For This Useful Post:
secondcurve (10-06-2010)