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TOPIC: trailer question

trailer question 12 Apr 2020 19:30 #103676

I assume it's bunk boards you are referring to when you say bucks.

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John

1958 Vagabond II & 35 HP Evinrude
1955 PlastiCraft 12 Ft. Delux Runabout
1957 Clipper & twin 35 HP Evinrudes
1957 AlumaCraft 14 Ft. FD

trailer question 12 Apr 2020 02:58 #103661

MercurySpecialist wrote: Hi Sean,
In viewing the two provided pictures, you appear to have a boat trailer intended for a 12 foot jon or semi-V utility boat in use for a 14 foot runabout boat. I state this because the aft 12 inches to possibly 18 inches section of your boat is only supported by two "on edge" carpeted 2 X 4 "bunk boards". Such support, where the steel "bunk bracket" is so distant from the boat transom, will simply allow the 2 X 4s to bow towards the ground over time and road shock (a little like a rocking chair). For the purpose of answering your question, two suggestions would be either adding (2) or (3) more trailer tongue mounted "U" bracket roller assemblies in addition to the (1) presently in use; or instead attaching an 8 & 1/2 inch wide motorcycle ramp on top of the trailer tongue to then support two 6 feet length carpeted 4 X 4 treated lumber for the bow portion of the keel to nestle between (a 1 & 1/4 inch space/gap would be created). The even greater need for transom support is then not being addressed, and I would advise spending the money for the change to a well-suited boat trailer instead. The boat trailer picture included to provide an example, although they are not shown well, has welded brackets for a pair of 8 foot long "flat" carpeted 2 X 4s or 2 X 6s to well support a 14 to 15 foot boat hull. A second pair of bunks ("double bunks") could be added to even further improve hull support.

Respectfully,
Joe
(770) 597-5992


thank you Joe for your insight,
I will look towards addressing your input. the bucks I have are 2x6 that run the length of the flat portion of my ranger @6'. Its ends are almost flush with the transom but I see I should move them back an inch or two. I replaced 2x4x 18" suspended on brackets for these 2x6 because I could rest the whole height of the buck on the trailer framing, they are spaced to run 1" outside of a heavy reinforcement in my boat.
Every trailer I've taken stock of has had center rollers supporting the weight of the front 2/3s of rangers and Vagabonds but I am new to this, I firmly agree my trailer is junk! It is flexable (more so before I added these bucks) it's to high to load well and hard to drive on. The example you've shown is just like my 16' glastron ski boat trailer one size down and exactly what I would like to have! Keep your eyes open for me lol

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Sean

trailer question 11 Apr 2020 11:09 #103627

Hi Sean,
In viewing the two provided pictures, you appear to have a boat trailer intended for a 12 foot jon or semi-V utility boat in use for a 14 foot runabout boat. I state this because the aft 12 inches to possibly 18 inches section of your boat is only supported by two "on edge" carpeted 2 X 4 "bunk boards". Such support, where the steel "bunk bracket" is so distant from the boat transom, will simply allow the 2 X 4s to bow towards the ground over time and road shock (a little like a rocking chair). For the purpose of answering your question, two suggestions would be either adding (2) or (3) more trailer tongue mounted "U" bracket roller assemblies in addition to the (1) presently in use; or instead attaching an 8 & 1/2 inch wide motorcycle ramp on top of the trailer tongue to then support two 6 feet length carpeted 4 X 4 treated lumber for the bow portion of the keel to nestle between (a 1 & 1/4 inch space/gap would be created). The even greater need for transom support is then not being addressed, and I would advise spending the money for the change to a well-suited boat trailer instead. The boat trailer picture included to provide an example, although they are not shown well, has welded brackets for a pair of 8 foot long "flat" carpeted 2 X 4s or 2 X 6s to well support a 14 to 15 foot boat hull. A second pair of bunks ("double bunks") could be added to even further improve hull support.

Respectfully,
Joe
(770) 597-5992

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Avatar: Carl Kiekhaefer (Founder of Mercury Outboards) and My Father at 1964 Mercury Dealer Meeting

trailer question 10 Apr 2020 10:04 #103593

Photoguy wrote: What Jeff said. There shouldn't be any weight on those rollers except when loading and unloading. Even then not that much. The bunks should be supporting the weight of the boat.

Not sure my trailer was ever set up that way, it barely had bucks when I bought it, I increase them to six feet. The only wear showing is the roller ahead of the bucks.

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Sean

trailer question 10 Apr 2020 10:00 #103592

MercuryMarc wrote: I understand the transom needs to be supported, and I have that set up that way on my trailer.

But as far as not using the center rollers for support while out of the water, that's not the way I have it at all.
Your keel is the strongest part other than the transom and should fully support the boat.

This is how I set my trailer to the boat.

I lower the bunks or rollers a bit so the boat is fully sitting on the center rollers.
I adjust the center rollers so the weight is distributed evenly along the length of the boat.

I then put a level on the boat and cut 2 2x4's to support both sides of the boat, at the stern.

After the boat is sitting level and supported I then raise the bunks or rollers up to the boat, and lock them down.

The keel should hold the weight and the bunks just cradle the hull.


I set mine up the same way when I removed a 20-inch bucks and installed these 6 ft long versions. My trailer is very flexible so I don't think setting my height along the length will affect roller wear much, I think I cut it up during loading, this first roller a head of the bucks catches all the weight first. I started loading the boat with the trailer a little more shallow recently to see if that helps.

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Sean

trailer question 10 Apr 2020 09:53 #103591

I set my winch height loaded, I definitely see your point that this middle roller gets all the weight when I'm loading the craft, most of this occurs before I hook up the winch as the weight transfers more evenly the more loaded the trailer is. I'm not sure where else I would want the winch mounted. Very recently started parking the trailer more shallow when loading then I do when I launch.

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Sean

trailer question 10 Apr 2020 01:17 #103585

The early (1955 & earlier) Feather Crafts have two piece keels, I would suggest those boats should be supported better towards the split keel area than just center rollers. The early race boats with no center keel need careful treatment also, multiple wide rollers are my preference.
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"And the days that I keep my gratitude higher than my expectations, I have really good days." - Ray Wylie Hubbard
Last edit: by Locomotion.

trailer question 10 Apr 2020 00:04 #103581

I'm just going by the two fishing boat setups that I have had and my current setup with the Feather Craft. The two fishing boat trailers were drive on trailers. There was a roller at the rear of the trailer and one towards the winch and they were there to protect the keel from the trailer frame, until you loaded the boat onto the bunks. My current trailer only has one roller and that is to protect the keel towards the winch. Otherwise it's all on the bunks to do the holding work. The bunks run a good length of the boat and have the flat side up, not on their edges.
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trailer question 09 Apr 2020 22:12 #103577

I understand the transom needs to be supported, and I have that set up that way on my trailer.

But as far as not using the center rollers for support while out of the water, that's not the way I have it at all.
Your keel is the strongest part other than the transom and should fully support the boat.

This is how I set my trailer to the boat.

I lower the bunks or rollers a bit so the boat is fully sitting on the center rollers.
I adjust the center rollers so the weight is distributed evenly along the length of the boat.

I then put a level on the boat and cut 2 2x4's to support both sides of the boat, at the stern.

After the boat is sitting level and supported I then raise the bunks or rollers up to the boat, and lock them down.

The keel should hold the weight and the bunks just cradle the hull.
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Mercury Marc, 1958 Hawk II, Merc 400

trailer question 08 Apr 2020 11:13 #103535

What Jeff said. There shouldn't be any weight on those rollers except when loading and unloading. Even then not that much. The bunks should be supporting the weight of the boat.
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