how far off bunks

[Mi duckdown]

Re: how far off bunks

Bunks/ Rollers. Need support the transom . Period. anything past the transom is useless. does not matter what boat you own. PICS WOULD HELP. I/O, ourtboard. What?

 

[smokeonthewater]

Re: how far off bunks

Suppose it's just curiosity as to why people think bunks need to extend past the boat. Nothing is gained by it. Also many times I see bunks that extend well past the point that they are attached to the support. Which when laid flat wood will distort when weight is applied to the end. Same as the center will when trying to span a long distance.

I wasn't asking you I was asking the O/P

If we understand WHY he is asking we can help him... if he is just asking for the heck of it I for one will move on to the next thread but if he has an issue we can help fix then I say let's get to it.

 

[04fxdwgi]

Re: how far off bunks

I guess the old addage "What ever makes you feel good" comes to play. Personally, I "feel good" having the transom supported and following the trailer manufacturer's instructions. The same trailer that was with the boat when new and set up professionally from day one. Eagle Trailers (which I am looking at the manual right now) actually recommends 3-5" of bunk beyond the transom, but thier diagram shows the rear most bunk support (with 3-5" of bunk protruding past the last support) directly beneath the transom, to support the weight.

Origional post was concerning bunks, then morphed to a roller thing. This actually is like comparing apples and oranges.

This setup has worked quite well for my 22 year old sport boat and don't think I'll change anything.

 

[smokeonthewater]

Re: how far off bunks

Excellent point!

recommends 3-5" of bunk beyond the transom, but their diagram shows the rear most bunk support (with 3-5" of bunk protruding past the last support) directly beneath the transom, to support the weight.

This part is really key to the point... it isn't the protruding bunk that offers the support but rather the frame bracket attached to the bunk.... behind it there IS no support so even the guys with a couple inches or even a couple feet of bunks hanging off the back of the trailer who THINK they are supporting their boats are missing the point and possibly destroying their boats.

 

[NYBo]

Re: how far off bunks

Moving the post 3-4" may work in some cases. In others it could easily change the weight distibution and the tongue weight.

Actually, it will change weight distribution in all cases. That needs to be taken into account when contemplating this as a solution.

 

[bonz_d]

Re: how far off bunks

So from the looks of all the responses to this thread it appears that correctly setting up a trailer isn't as simple as many think. Also as I've stated before, between this forum and many of the for sale ads I look at there are some really nice trailers and some real junk out there that people are buying. In both bunk and roller flavors.

Case in point. The last boat I bought weighted about 1000lbs. loaded and was sitting on a trailer rated at 2200lbs. It has sense been replaced with a properly sizes trailer.

 

[smokeonthewater]

Re: how far off bunks

seems pretty simple to me... 1: choose a trailer with proper length and weight rating.... 2: properly support hull all the way to the transom with bunks and/or rollers.... 3: adjust axle position for proper tongue weight

 

[kahuna123]

Re: how far off bunks

I know roller trailers are a necessity up North because of the angle of most ramps. You will NEVER see a high dollar boat on anything but a bunk trailer. The bunks always extend at least to the transom. Inboards not a big deal. Two 800 pound outboards hanging on a transom will eventually hook the hull.

 

[bonz_d]

Re: how far off bunks

seems pretty simple to me... 1: choose a trailer with proper length and weight rating.... 2: properly support hull all the way to the transom with bunks and/or rollers.... 3: adjust axle position for proper tongue weight

About as basic as one can get hey! Amazing how many get it wrong.
Think the OP is still following this?

 

[smokeonthewater]

Re: how far off bunks

I know roller trailers are a necessity up North because of the angle of most ramps. You will NEVER see a high dollar boat on anything but a bunk trailer. The bunks always extend at least to the transom. Inboards not a big deal. Two 800 pound outboards hanging on a transom will eventually hook the hull.

I've seen quite a few high dollar boats on roller trailers

 

[kahuna123]

Re: how far off bunks

I don't know what you call high dollar there. But show me a picture of a yellowfin, dusky, intrepid, stamas, glacier bay, cape horn, contender, cigarette, grady-white, ocean, palmetto, regulator, seacraft, pursuit sold new with a roller trailer recommended.

 

[bonz_d]

Re: how far off bunks

Inboards not a big deal. Two 800 pound outboards hanging on a transom will eventually hook the hull.

A quick search here on iboats of Evinrude, Mercury and Yamaha as of 2005 their largest engines max out at 550lbs which is a far cry from 800lbs!

 

[smokeonthewater]

Re: how far off bunks

I don't know what you call high dollar there. But show me a picture of a yellowfin, dusky, intrepid, stamas, glacier bay, cape horn, contender, cigarette, grady-white, ocean, palmetto, regulator, seacraft, pursuit sold new with a roller trailer recommended.

I don't know what you call high dollar there either but when I see a totally tricked out new F-650 painted to match the 40' triple engine cigarette boat on the also painted to match full roller trailer with more money invested in just the poly rollers than my boat cost new I tend to figure it MIGHT be considered high dollar by at least the average middle class person.

I don't have any pictures so I suppose you can call me a liar if you want....... won't do ya any good tho :flypig::nono:

 

[kahuna123]

Re: how far off bunks

You are right roller trailers are much better

 

[smokeonthewater]

Re: how far off bunks

You are right roller trailers are much better

I didn't say that..... I do like em but I didn't say they were better

 

[chriscraft254]

Re: how far off bunks

No smoke, Kahuna has it right, roller trailers are MUCH better, lmao! To funny! My boats high dollar to me. But I don't have to many dollars. But I do just happen to have a nice high dollar roller trailer. If I do recall correctly also, the brand new Grady that we bought back in the 90s came equipped with a very nice roller trailer.

The type of trailer is personal choice and most manufactures offer both because after all, the boat manufactures don't make the trailers, there farmed out to a trailer company.

 

[carey965]

Re: how far off bunks

When I bought mine the transom stuck out about .5-1ft past the bunks and the trailer towed like ****. After posting the question as to why it was like that on here I realized that it was too far back so I moved it forward and it was a 100 times better now on average I have about an inch or 2 give or take of bunk hanging off. But my boat was like that since Tahoe sent it out of the factory in 98 and I'm the only one that had an issue with it and I'm at least the 3rd owner. So even the factory can get it wrong from time to time

 

[Maclin]

Re: how far off bunks

Are we trying to talk the OP into a roller trailer, or answer the original question about a bunk trailer.

 

[bonz_d]

Re: how far off bunks

Not I. My point is that anyone who thinks that bunks need to extend past the end of the hull are misinformed. Regardless of whether it is an outboard, IO or inboard.

A bunk extending past the end of the boat is doing NOTHING. A bunk extending nore than a few inches past the bunk support bracket is weak and will distort. Unless of course one is using 4x4 lumber. A 2x4 mounted on edge will still distort... 2x6 mounted on edge not so much. Laid flat, they all will distort to a degree. Wood flexes and bends by nature.

 

[Maclin]

Re: how far off bunks

Besides just the bunk supporting the transom, the bunk support should be right there as well as others have mentioned. Regarding bunks going past the end, agreed, no value.

Bonz, no finger pointing, all good, just wanted to get the thread back on track to help with the decision the OP has to make