Join Date: Jan 2003
Location: Maine Coast
Thanked 154 Times in 120 Posts
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Originally Posted by svsirius
Please tell me you did tell him his spade was put together wrong.
The blade is on the shank as you indicated upside down but that's not the real issue.
There has been at lease one failure but a person who did the same thing. It stresses the welded assembly totally wrong for the design.
We have a WINNER !!!!!
So here's what's wrong:
The fluke is installed on the shank UPSIDE DOWN!! This changes all the design angles, such as fluke to shank, and the total design characteristics of the anchor in general not to mention design strength..
For those not familiar with the Spade anchor it is supposed to be shaped like a "spade" shovel not a plow as it is currently installed..
Oh, and yes, of course I did explain to him that he put his anchor together up side down and he was quite horrified and said he would attend to it asap.. I also informed him of the bolt upgrade that allows you to put a cotter pin through it to prevent the nut from backing off after all he might anchor in front of me some day...
P.S. There is not one know weld fracture of a Spade that I am aware of and I am involved on just about every major sailing forum out there so I think I would have heard of it having been a Spade owner since the very early days.
The referenced failure was because the bolt backed out of the hole and the fluke and shank separated! Spade offered a bolt upgrade with a drilled hole in the end of the bolt to place a cotter pin through. It seems people were re-using the nyloc insert nuts, after disassembling their anchors, which is a big NO, NO with nylocs.... Never re-use a nyloc insert nut!!
-Maine Sail / CS-36T
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Last edited by Maine Sail; 07-19-2008 at 09:16 PM.