How to properly adjust pontoons on trailer bunks?

You know the drill..

Moderators: Redneck_Randy, badmoonrising, lakerunner

Post Reply
Message
Author
SoCalAngler
Posts: 140
Joined: Sat Sep 22, 2012 7:38 pm

How to properly adjust pontoons on trailer bunks?

#1 Post by SoCalAngler » Wed Apr 10, 2013 8:52 pm

I noticed that my pontoons sit about 2-3 inches forward of the tail end of the bunk boards. Typically should not be a problem. However, I have an aluminum plate that is welded to the bottom rear end on the port pontoon. The plate is used to mount the live well pump and transducer. I think the plate is welded at the bottom of the rear cone seam. The plate is resting on one of the bunk boards (dual bunk boards for each pontoon). I'm assuming it has been this way since new. Do you see this as a problem? I thought that over time, the rear cone seam weld, at the plate area, could crack from bouncing along the road.

As you can see in the pics, I have about 2-3 inches of where I can move the boat back so the pontoons sit even, or with a 1 inch overhang, with the bunk boards. This would be a simple process of loosening the bow stop/ladder mount U-bolts and moving it back 2-3 inches and re-loading boat. To completely avoid plate from resting on bunks, pontoons would need to overhang the bunk boards by 1 inch.

Thoughts?

Thanks!
Attachments
livewell pump mount 2.JPG
livewell pump mount 2.JPG (88.67 KiB) Viewed 6696 times
livewell pump mount.JPG
livewell pump mount.JPG (84.84 KiB) Viewed 6695 times
2003 Ford F-350 Super Duty, XLT, V10, 4X2, Crew Cab, Short Bed...tow vehicle
2017 Alumacraft V16; 2017 Yamaha F25; 2017 Karavan Trailer
2011 Keystone Outback 250RS

User avatar
HandymanHerb
Site Admin
Posts: 14336
Joined: Fri Mar 17, 2006 8:57 pm
Location: Orlando Fla

Re: How to properly adjust pontoons on trailer bunks?

#2 Post by HandymanHerb » Wed Apr 10, 2013 9:59 pm

Weight your tongue and see what it is, you can move it back as long as you don't get the tongue weight to light, that will cause you to fish tail at speed
In Memory of John 6x6 Larsen

Image

User avatar
cwag911
Posts: 1879
Joined: Sun May 27, 2007 7:26 am
Location: Lake Norman,NC

Re: How to properly adjust pontoons on trailer bunks?

#3 Post by cwag911 » Thu Apr 11, 2013 3:34 am

I think it's perfect where it is.
Carl & Suzi
07 Bennington 2275rl triton w/ strakes
150 Honda 15x15p Enertia prop
Power assisted steering
Denver, NC Lake Norman
Pleiku, Vietnam 1971
Agent Orange survivor (so far)

User avatar
curtiscapk
Posts: 5445
Joined: Mon Nov 10, 2008 8:31 am
Location: OP KS\Hillsdale Lake

Re: How to properly adjust pontoons on trailer bunks?

#4 Post by curtiscapk » Thu Apr 11, 2013 5:59 am

+1
Craig and Paula
"THE FLOATER" rebuild Spring 2013
viewtopic.php?f=2&t=15328
94 Party Barge 24' 115 merc
Turning Point hustler 14 x 13 prop
22mph gps 3 people
12 F150
Overland Park Ks
Hillsdale Lake, KS

User avatar
The_Hellbilly
Posts: 930
Joined: Fri Jul 30, 2010 8:59 am
Location: Lake Eufaula, Oklahoma

Re: How to properly adjust pontoons on trailer bunks?

#5 Post by The_Hellbilly » Thu Apr 11, 2013 7:14 am

I agree with Herb, it comes down to trailer balance & tongue weight. Figure that out first. If you have to take a saw and shorten that bunk after, so be it.
Counting all the a$$holes in the room Well I'm definitely not alone

2005 Voyager 22ft Tritoon
2004 Honda 135hp
Strakes, underskinned, aluminum deck, etc.
Towed by: '11 Chevy Z71 Crewcab

User avatar
redbeard
Posts: 1203
Joined: Fri Jul 20, 2012 8:30 am
Location: Blue Springs, MO

Re: How to properly adjust pontoons on trailer bunks?

#6 Post by redbeard » Thu Apr 11, 2013 7:21 am

The_Hellbilly wrote:I agree with Herb, it comes down to trailer balance & tongue weight. Figure that out first. If you have to take a saw and shorten that bunk after, so be it.

1+
Truman Lake
1986 24' Playcraft "The Georgia Peach"
1996 Evinrude 88 HP
14x11 Prop

User avatar
BobG
Posts: 1842
Joined: Mon May 14, 2012 6:24 am
Location: Gilpin County, CO

Re: How to properly adjust pontoons on trailer bunks?

#7 Post by BobG » Thu Apr 11, 2013 8:54 am

Mine sits farther forward than that, and I have had no issues with it. What matters is balance and tongue weight. Believe me, that REALLY matters. The dealer who sold me my boat and trailer had it set so the tongue weight was essentially ZERO. I didn't know, and figured they DID. I towed like that 1,100 miles home, and it was squirrely as hell. Nearly killed myself, when I unhitched it, and the tongue just flew up in the air. Once I got the tongue weight to 10% of the combined weight of the boat and trailer (400 pound tongue weight) it towed great. Then I had to replace both axles. The dealer sold me a trailer rated at 2,999 pounds, without brakes. The boat and trailer weighed 4,000 pounds which requires brakes, both in the state where they sold it to me, and in every state between there and Colorado (also required in CO). These asshats knowingly sold me a combination that is both unsafe and illegal. Do not buy a trailer from T&M Marine in Grand Rapids, MN. They build them there (the owner of T&M also owns the company that makes the trailers). They do not care about your safety nor compliance with the law.
2012 Tahoe 24' Fish-n-Fun Tritoon, with Mercury 115 HP 4-Stroke
"Trine SS Cape" (Trying 2S Cape)
Add a battery: viewtopic.php?t=13546&p=105893#p105893
I'm not a liberal, but I play one on this site.

SoCalAngler
Posts: 140
Joined: Sat Sep 22, 2012 7:38 pm

Re: How to properly adjust pontoons on trailer bunks?

#8 Post by SoCalAngler » Sat Apr 13, 2013 9:20 pm

so, any comments on the live well bracket and possibly cracking the seam weld I spoke of?
2003 Ford F-350 Super Duty, XLT, V10, 4X2, Crew Cab, Short Bed...tow vehicle
2017 Alumacraft V16; 2017 Yamaha F25; 2017 Karavan Trailer
2011 Keystone Outback 250RS

User avatar
MH Hawker
Posts: 1434
Joined: Sat Aug 20, 2011 4:13 pm
Location: West Virginia

Re: How to properly adjust pontoons on trailer bunks?

#9 Post by MH Hawker » Sun Apr 14, 2013 5:07 am

You can shorten the bunks a bit.
If it aint broke your not having enough fun

James & Deb

1988 Riviera Cruiser 15 HP Mariner
05 Silverado Z 71 V8 5.3

User avatar
Krochus
Posts: 26
Joined: Wed Apr 03, 2013 4:00 pm
Location: Alma on the AR river

Re: How to properly adjust pontoons on trailer bunks?

#10 Post by Krochus » Sun Apr 14, 2013 5:09 am

SoCalAngler wrote:so, any comments on the live well bracket and possibly cracking the seam weld I spoke of?

Not a problem. (Welder hat on) the soft pine will conform to the pressure point of the bracket weld. In fact we'd use pine under large girders that were wobbly when stood during fabrication because a convex flange would sink into the wood and sit steady.

Between the carpet and the wood I doubt you have much additional pressure at that point.
[size=85][b]2013 g3 suncatcher v20fc "miss-appropriated", 70hp Yamaha four stroke, 2000 ford f250 powerstroke with a stick[/b][/size]

User avatar
tuned
Posts: 1259
Joined: Wed May 26, 2010 11:40 pm

Re: How to properly adjust pontoons on trailer bunks?

#11 Post by tuned » Sun Apr 14, 2013 11:52 am

BobG wrote: The dealer who sold me my boat and trailer had it set so the tongue weight was essentially ZERO. I didn't know, and figured they DID. I towed like that 1,100 miles home, and it was squirrely as hell. Nearly killed myself, when I unhitched it, and the tongue just flew up in the air. Once I got the tongue weight to 10% of the combined weight of the boat and trailer (400 pound tongue weight) it towed great. Then I had to replace both axles. The dealer sold me a trailer rated at 2,999 pounds, without brakes. The boat and trailer weighed 4,000 pounds which requires brakes, both in the state where they sold it to me, and in every state between there and Colorado (also required in CO). These asshats knowingly sold me a combination that is both unsafe and illegal. Do not buy a trailer from T&M Marine in Grand Rapids, MN. They build them there (the owner of T&M also owns the company that makes the trailers). They do not care about your safety nor compliance with the law.
What the hell were you doing in my neck of the woods, Bob? I live about two hours from there. I, also, bought a trailer for my OLD toon from these idiots. Poor welding, cheap paint, horrible customer service and not even a very good price for all the lack of quality. I could go on.
The triple bunk I got from Ty's buddy over in Elhart, IN is twice the value for almost the same price. Like night and day.
Sorry about the hijacking, SoCal, but when a guy needs to rant, it is hard holding back :ak47
ToddBob
'Al the Mirthmaker' (The Third)
Build-- viewtopic.php?f=16&t=14007
Rainy Lake/Voyageurs National Park
International Falls, MN

User avatar
BobG
Posts: 1842
Joined: Mon May 14, 2012 6:24 am
Location: Gilpin County, CO

Re: How to properly adjust pontoons on trailer bunks?

#12 Post by BobG » Mon Apr 15, 2013 8:45 am

tuned wrote:What the hell were you doing in my neck of the woods, Bob?
While they are a HORRIBLE stealership, they just happen to have the best prices on Tahoe pontoons in the universe, so I drove 1,100 miles each way and got a GREAT boat on a CRAPPY trailer. I'm still contemplaining taking it up with the Minnesota Attorney General's Office to recoup the cost of making the trailer legal - about $1,200.
2012 Tahoe 24' Fish-n-Fun Tritoon, with Mercury 115 HP 4-Stroke
"Trine SS Cape" (Trying 2S Cape)
Add a battery: viewtopic.php?t=13546&p=105893#p105893
I'm not a liberal, but I play one on this site.

Post Reply