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PostPosted: Wed May 23, 2018 2:41 pm 
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Joined: Sun Dec 23, 2007 1:20 pm
Posts: 493
Location: Clearwater, FL
My trailer uses UNA-038 slipper springs - flat end with 2 leaves, 30" long, each rated at 880lbs.

I wasn't able to find any springs in my configuration with less than 705lb capacity so I called the manufacturer of my springs (Universal Group). They said it would be OK to remove the second leaf and that would lower the load capacity of each spring from 880 lbs to 400 lbs.

I just completed the modification to my trailer's springs. The hardest part was having to cut the bolt that held the leaves together on both springs. I did one side while the boat was on the trailer and the other side with the boat off (on the grass). It definitely is easier to do with the boat and toy box off the trailer.

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Tim
84 H16
82 H16
87 H14T
Tortola Sails: 115222
Blue Prism Sails: 88863
Clearwater, FL
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PostPosted: Fri May 25, 2018 10:55 am 
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Joined: Sat May 02, 2009 5:22 am
Posts: 675
Location: Columbus, Indiana
I have rebuilt several Holsclaw steel trailer. I change out the 16ga. or 1/16" with 11ga. or 1/8" thick steel tubing on the cross bar and I also replace the tongue steel with 1/8" steel. I add length to both the cross bar as a step and I add several feet to the tongue tubing so that it reaches further back almost to the axle and with another 2 foot out front. This improves balance with an heavy loaded trailer.

To reach back further through the trailer, I cut out a "window" in the original channel where the front tubing terminated sending the new longer steel tubing through that window to the next channel and bolt it there. This stiffens the whole trailer. I add a pair of angle iron "cleats" to strengthen that channel that I cut the window in.

I live in Indiana ,so most trailer are steel and not galvanized. Galvanized is a better product all around..... :)

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