Aluminum boat bow eye installation

Pogo123

Petty Officer 2nd Class
Joined
Jun 7, 2005
Messages
177
I have a small aluminum semi-V skiff on which I think a better bow eye than is currently installed would be a big advantage, but .. I need some recomendations/discussions, please.<br /><br />The current bow eye is on top of a small plate at the highest point on the bow. That puts it well above the height of the trailer winch. Loading the boat by winch pulls the boat down severely into the trailer bunks. I can't believe that a straight pull wouldn't be better for both loading ease and hull stress relief.<br /><br />I've tried to devise ways to modify the winch assembly, but nothing appears to resolve the issue from that approach.<br /><br />My thought is to install a bow eye (two hole U-bolt design) lower on the prow more inline with the winch and lower than the winch roller/stop. I plan on backing this with a one inch diameter aluminum tube to distribute the pressure over a wider area inside the hull. <br /><br />The hull is doubled at this point and I've also laid in a short section of welded bead along the inside seam.<br /><br />Can anyone come up with a criticism for simply drilling through the prow seam, sealing it and installing the bow eye or ... offering a better suggestion?<br /><br />I hope I've described all this well enough to illustrate what I have and what I'm trying to accomplish.<br /><br />Any thoughts will be appreciated, very much.
 

BoatBuoy

Rear Admiral
Joined
May 29, 2004
Messages
4,856
Re: Aluminum boat bow eye installation

Mine is factory and the bow eye is welded to the extrusion that forms the prow, well below the top of the bow.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: Aluminum boat bow eye installation

Provided you back up the area inside the bow you can certainly lower the bow eye.
 

AJ168

Petty Officer 1st Class
Joined
May 30, 2005
Messages
295
Re: Aluminum boat bow eye installation

I don't know if lowering it would be a good idea without making sure that the eye wouldn't contact the water in a chop. My uncle replaced a bow eye slightly lower than the origional and every once in a while a heavy chop or a large wake will cause the water to come up to the level of the eye, causing a huge amount of spray. In any kind of chop you get soaked.
 

Pogo123

Petty Officer 2nd Class
Joined
Jun 7, 2005
Messages
177
Re: Aluminum boat bow eye installation

Thanks, guys ... I appreciate the feedback.<br /><br />This morning I mounted the eye as I had wanted.<br /><br />After slight preforming with a mallet and mandrel, I drilled two holes through a 2 1/2 length of 1" O.D., 1/8th inch wall T3 aluminum to serve as a backing for the stainless U-bolt.<br /><br />Then I drilled straight through the prow about 4 1/2" below the gunwale, bedded the assembly in epoxy (left over from having done some Golf Club assembly testing) and tightened'er down enough to warp the tubing into conformation with the inside prow joint (not much problem as the prow is very nearly straight at this point - just a hint of curve). This squeezed the tubing from circular cross section to a wedge that makes good mechanical contact with the prow seam doublers.<br /><br />Then I backed off the nuts, applied the epoxy and just snugged the U-bolt securely, but not over tight.<br /><br />It's currently curing at 170 degree, but will be ready to test late this afternoon. Plus, the weather's great and the flounder are in the shallows with this sudden warming spell... :) <br /><br />I must say the the installation looks good and the pull to the winch is now straight with no down-pull onto the bunks. This 45 minute effort will also relieve the hull bending that had to result from pulling down on the bow and then strapping down the transom. I'm happy.<br /><br />Thanks again .. I do appreciate all your comments.
 

Moody Blue

Captain
Joined
May 24, 2004
Messages
3,136
Re: Aluminum boat bow eye installation

Sounds like a job well done. Watch that the backing tube doesn't compress any further under heavy load.
 

Pogo123

Petty Officer 2nd Class
Joined
Jun 7, 2005
Messages
177
Re: Aluminum boat bow eye installation

Good point, Rod - thanks for the heads-up.<br /><br />I'll check it periodically, and If the eye becomes the least bit loose, I'll fix it. <br /><br />The tube I used is pretty hefty, but, if necessary, I can remove the u-bolt and place an over sized nut (or two) over each u-bolt shaft inside the tube to limit further compression.<br /><br />Glad you mentioned this now, Rod. I'm planning to built a small deck section to enclose the bow from the front seat forward and it will be much more difficult to access the bow eye after I do that.
 
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