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Old 14 September 2020, 13:43   #1
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Tie Down Straps for Trailer

I have just modified my utility trailer to transport our new Elling KB350. Just wondering what people are using to tie their Sibs down to trailers. I'm not too keen to have the straps directly onto the tubes so I am considering making up some pads. I am also a bit wary of strapping the front eye too tightly so any tips and advice most welcome.

I will post some pictures of my multi purpose trailer later in the week. It didnt take much doing and gives a lot of options when transporting the Sib.
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Old 14 September 2020, 16:30   #2
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I wonder if the pads they sell to cover car seat belts will be of use for the tube protection over your straps?
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Old 14 September 2020, 16:36   #3
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Heating pipe insulation. Slip it over the strap webbing.
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Old 15 September 2020, 00:51   #4
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Have you not got any tow eyes on the Transom. If you have make short straps and strap to these at the back. Then one on the bow eye should do the trick.

Strapping over the tubes is not ideal and will as you seem to realize mark the tubes. Also as air temp changes the straps will be loose potentially
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Old 15 September 2020, 01:06   #5
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By all means use the transom davit eyes and bow eye, but I also use 50mm straps to spread the load and go over the top of both tubes, one side to the other. This is belt-and-braces holding our RIB down on it's trailer. No ill effects on the tubes after many years (previous owner did this before me using 25mm straps and pipe insulation).

Smallribber's fear that the straps loosen due to temperature change is unfounded. Pressure in the tubes ensures there's never any slack. The tubes may get dirty depending on the cleanliness of your strap so you keep strap and tube clean as you can. Never let the strap touch the floor.
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Old 15 September 2020, 10:53   #6
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Never let the strap touch the floor.. That is easier said than done
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Old 15 September 2020, 11:10   #7
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Thanks for the ideas and pointers. I will probably go down the pipe insulation route but will look at adding some transom eyes.
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Old 15 September 2020, 12:04   #8
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If you have launching wheels you could potentially put eyes on the inside of the transom on the bolts that go through the launching wheel brackets but just be careful they don't foul the air floor.

I'm probably on the side that doesn't like strapping over the tubes.
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Old 15 September 2020, 13:00   #9
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I did this on my 350 d rings.jpg
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Old 15 September 2020, 13:12   #10
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Quote:
Originally Posted by Oldman2 View Post
I did this on my 350 d rings.jpg
That's better than mine. I used eye nuts but the same principle.
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Old 15 September 2020, 13:15   #11
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Those look very good indeed and also very useful, great advice!
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Old 15 September 2020, 13:34   #12
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I did finish them off with dome nuts but had to fit with plain nuts to start with so I got full compression and could measure the amount of thread to remove so as to not bottom out when tightening the bolts/dome nuts.
As an aside I removed both makers plates as they would have got drilled! But they were held on with self tappers with no sealant behind so a place for water to enter the plywood. I sealed the holes with marine sealant and put the plates safe indoors
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Old 15 September 2020, 13:49   #13
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Not only do you get rub and wear on the tubes from straps when the tubes go down due to temperature they are loose and vibrate causing more damage and an insecure load.
Straps through the eye bolts on the transom bow eye on to winch with a strap holding down to the trailer from the bow eye.
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Old 15 September 2020, 15:27   #14
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I wouldnt get to stressed by the anti tube strap brigade i have a 20 year old rib I've owned from new and its had straps over its tubes its entire life and it doesnt have a strap related mark anywhere . If tubes are inflated to 3psi or so you could probably have several hundred kg of downforce over the area of the tube so the boats going nowhere
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Old 15 September 2020, 16:05   #15
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Not sure if it’s a zapcat thing but apparently when you strap them side on it can pull the tubes off the transom/nose cone. Not something I imagine is overly relevant as zapcats aren’t exactly built well to last.
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