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Weird trailer

Post Options Post Options   Likes (0) Likes(0)   Quote Chris B Quote  Post ReplyReply Direct Link To This Post Topic: Weird trailer
    Posted: 19 May 2017 at 6:56pm
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Not fishing related but I thought there'd be a boat guru on here who could help...

I bought a wee 14' sailing dinghy yesterday and it came with a small trailer.

I noticed it's very sloppy in the springs so I ducked my head under and found a very odd suspension setup that I've never come across... pics below.

I paid bugger all for the outfit and the boat's awesome so I'm happy even if the trailer's a bit dodgy but don't know what to do.

It's on 8 inch wheels. Rest looks pretty sound.

Do I leave it or replace it with leaf springs? Can reuse the existing axle i'd imagine?

Seems to be quite heavy on the drawbar too, I wonder if the axle is too far back.

Edit: It's a road trailer with current wof/rego so should be legit. Like being on a bouncy castle while trying to step the mast tho so would be keen to sort it out



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Post Options Post Options   Likes (0) Likes(0)   Quote veitnamcam Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2017 at 8:41pm
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I think it is awesome we can still build our own trailer in NZ.
While that isn't at the pinical of design it is probably not dangerous until it breaks......I see some seriously bad home built trailer design in my trade.

For the sake of a hundred bucks I would replace with some springs from TM trailer parts or similar if you can do the job yourself or ply a mate with beer to do it.
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Post Options Post Options   Likes (0) Likes(0)   Quote Chris B Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2017 at 9:57pm
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Thanks vietnamcam

Yeah that's what I figured, it would be pretty final if the spring went :/

Think this is what you mean?

Tempted to have a go myself but gasless mig is all i've got, maybe best to get some help with this one?
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Post Options Post Options   Likes (0) Likes(0)   Quote Steps Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2017 at 9:26am
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I think you could get some questions asked with a competent WoF inspector....
 That is a lot tension on that spring.. the question is also how was that spring bent that way?
That left go and you will have the boat and trailer go up in the air with some very potentially serious consquinces.. chances are the other spring would let go also and have a axle bouncing freely around the road and foot paths...
The trailer isnt carrying a lot of weight.
Weight it fully loaded...
 Then look at replacing springs.. be it coil or leaf, with the correct rating.
I think you will find  boltable (U bolts to upper chassis rails) spring brackets available
 I would be very hesitant to use a 'home' gasless mig to weld suspension brackets...

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Post Options Post Options   Likes (0) Likes(0)   Quote Chris B Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2017 at 10:59am
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Thanks Steps. I was curious how it has a WOF, doesn't look safe to me.

OK I'll have a look for boltable spring brackets, that would be the way.

I won't use the gasless mig, if I have to go that way I know someone that'll do it for me.
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Post Options Post Options   Likes (0) Likes(0)   Quote Foxtrot Oscar Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2017 at 11:53am
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Trojan Trailers are at the Boat Show. Looked like they would have all the stuff you need. Can order anything in their catalogue through Repco.
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Post Options Post Options   Likes (0) Likes(0)   Quote Chris B Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2017 at 12:48pm
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I found these on Supercheap's site Foxtrot Oscar.

Worth doing for $100
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Post Options Post Options   Likes (0) Likes(0)   Quote Foxtrot Oscar Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2017 at 1:13pm
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That's the same kit Chris. Bargain! 👍
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Post Options Post Options   Likes (0) Likes(0)   Quote Steps Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2017 at 5:39pm
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Ditto.
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Post Options Post Options   Likes (0) Likes(0)   Quote OneWayTraffic Quote  Post ReplyReply Direct Link To This Post Posted: 21 May 2017 at 12:21pm
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Something to keep in mind is the weight of the boat. If it is a wooden sailing dinghy then it is likely very light for the size. Springs that are too heavy for the load will do a poor job of damping out bumps and jolts, possibly causing damage to the hull, especially if it's plywood on rollers.
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Post Options Post Options   Likes (0) Likes(0)   Quote Chris B Quote  Post ReplyReply Direct Link To This Post Posted: 22 May 2017 at 12:56pm
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OneWayTraffic, onto it, got 750kg springs, lightest I could find.

As is, she's bouncy as hell. Actually get seasick just trying to step the mast Dead
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Post Options Post Options   Likes (0) Likes(0)   Quote Don18025 Quote  Post ReplyReply Direct Link To This Post Posted: 22 May 2017 at 4:05pm
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Chris
Why do you have to stand inside the dinghy to hoist the mast?
You would in fact be doubling the weight of the boat and those springs are designed for very light loads only. Be careful if you put on heavy rated springs......may cause hull damage.
Can you not step the mast standing alongside the hull? Would be easier to tighten the stays in that position.
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Post Options Post Options   Likes (0) Likes(0)   Quote puff Quote  Post ReplyReply Direct Link To This Post Posted: 22 May 2017 at 8:31pm
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If they gave it a warrant wouldn't it be safe enough, looks old enough to prove it's been up to the task all these years.

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Post Options Post Options   Likes (0) Likes(0)   Quote MikeAqua Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2017 at 8:31am
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It's hard to find light springs.  The lightest leaf springs I have seen off the shelf are 500kg per pair.
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Post Options Post Options   Likes (0) Likes(0)   Quote Fraser Hocks Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2017 at 4:52pm
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As Steps said you should be able to find a U bolt on type of leaf and carrier arrangement.   

Iv seen them come mounted on angle iron so you just slip that under the frame and bolt it in the correct position for weight distribution. 

No need for welding.  Just slip the boat of the trailer.  Angle grind / cut  of the old spring and bolt the new one in place.  Just give the spots where you cut a coat of cold galve hey? Wink
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Post Options Post Options   Likes (0) Likes(0)   Quote Steps Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2017 at 5:46pm
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Just give the spots where you cut a coat of cold galve hey?

 better still, way better long term...clean back to good steel with disk sander...couple coats of POR 15...let cure, then touch up to match rest of trailer with paint over the top

 have been messing with alsorts of methods paints etc for a few yrs on our trailer...throw in a few decades of classic/ vintage car restos on the side....unle have your own media blaster and hot dip galv plant in the back cnr of the shed...only way to go.
 POR 15 is NOT cheap  100ml goes a VERY long way.
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