Bunks or Rollers

Bunks or Rollers

  • Bunks

    Votes: 62 63.3%
  • Rollers

    Votes: 36 36.7%

  • Total voters
    98
  • Poll closed .

JZammetti

Petty Officer 2nd Class
Joined
Apr 20, 2008
Messages
181
Hi Seasoned Boaters,

I am new to boating and try to consume as much knowledge as people are willing to offer. I have an 18' Bayliner BR185 Bowrider on a trailer with bunks. I was recently told I should have got a trailer with rollers instead. What is the difference between bunks and rollers and is it worth the investment of getting a new trailer that has rollers?

Thanks All
 

DRIFTER_016

Petty Officer 1st Class
Joined
May 5, 2008
Messages
360
Re: Bunks or Rollers

Stick with the bunks, they offer better weight distribution and support than rollers do.
With bunks you will need to back the trailer in the water a little further than roller style trailers, but this is not a big deal.
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,313
Re: Bunks or Rollers

Best of both worlds

I find it pretty hard to believe that you could justify selling one type for the other unless the existing trailer is totaly useless for your application.

Ones preferences depends mainly on where you launch and how you retrieve your boat.

If you typically use steep ramps and drive the boat on the trailer then I'd go with a bunker trailer. If your like me and frequent tidal ramps that get very shallow at low tide then a roller trailer would be a safer bet.

IMHO, a roller trailer is the best of both worlds. I can retrieve on the shallowest of ramps yet still drive on if the conditions allow. ;)
 

Antares2000

Cadet
Joined
Apr 25, 2009
Messages
16
Re: Bunks or Rollers

If it were me I would get a bunk. It does support better and its easier to drive onto a bunk nice and straight as opposed to rollers. I had a roller trailer for 15 yrs and really never liked it. There is a good comment above though about loading in shallow areas, it is a bit easier with the rollers. If you rarely have to do this, I think bunks are the way to go.
 

Navy Jr.

Senior Chief Petty Officer
Joined
Sep 14, 2007
Messages
738
Re: Bunks or Rollers

If it's a popularity contest, then my bet is bunks will win. Just spend some time at a busy ramp and you'll see.

The neat thing about bunks is they are easy to load. Hubby can just back the trailer in and Wifey can run the boat up and it'll stick right there. Then Hubby can just pull away to a side area to hook up the chains and tie downs with Wifey still on board. It's also pretty easy for those who launch/load by themselves.

Rollers on the other hand are a bit trickier. When Wifey runs the boat up onto the trailer, it won't stick. Hubby has to reach out and attach the winch line, then crank it on the rest of the way. And when launching, they both have to remember NOT to undo the winch strap until the boat has been backed into the water, or their day will be ruined by their prized possession rolling off the trailer onto the concrete ramp.

There's another side to the story, however, and (as others here have said) it has to do with shallow ramps. Sometimes you can't get the trailer in deep enough without risking backing too far and dropping the rear wheels off the end of the ramp. These ramps often mean having to spool out the winch line and crank the boat on no matter what type of trailer you have.

Here in MN we have some lakes that are below the levels they normally should be. It's strange, really. Some parts of the state are just fine, but others, like here in the Twin Cities area, really need to be recharged.

On normal ramps, and when by myself, I can drive on to my roller trailer and quickly step forward to reach down and clip the winch strap to the bow eye (with the motor trimmed up quite a ways, of course). But there have been some shallow ramps where I've had to hike out into the cold water, attach the winch strap to the bow eye, and then crank my boat onto the trailer. I also had the opportunity at the same ramp to help another crank his boat onto his bunk trailer when he asked for a little help. Mine was surprisingly easy to do by myself because of the rollers, but we had to take turns on his because of the effort involved to slide it onto the bunks.

So, (shrugging shoulders), I don't know. If the ramp(s) you frequent aren't shallow, I'd go for the bunks. Me? My son and I like trailering to a variety of different lakes, and that means we'll come upon some shallow ramps once in a while, so we went with rollers.
 

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,392
Re: Bunks or Rollers

I would not pull up anywhere without first securing the bow, bunks or rollers !!!!
If it can happen then it most likely will.
 

This_lil_fishy

Master Chief Petty Officer
Joined
Jul 23, 2008
Messages
841
Re: Bunks or Rollers

I would not pull up anywhere without first securing the bow, bunks or rollers !!!!
If it can happen then it most likely will.

Doubly agreed. I like the bunks better too, as has been stated a number of times much more support for the hull...thinking about those little contact patches that rollers have the next time you hit a pothole.

Loading is easier, launching a bit trickier on shallow ramps. Winching it in can require a bit of armstrong winding, but the loading and hull support are job one. Hop in the boat, turn it around and drive it right on the trailer. Hop up front, attach the winch strap and wind up tight, hop out onto the dock, into the truck and directly to the prep area for the haul home. Dry as a bone, the water here is currently 10degrees celcius, so that's a big bonus!

Ian
 

ddrieck

Senior Chief Petty Officer
Joined
Jul 12, 2007
Messages
666
Re: Bunks or Rollers

Another thing to think about:

I have an older 16' 1976 Starcraft Super Sport Aluminum Deep V. I installed a 85hp Johnson V4 a few weeks ago where there used to be a old 50hp Merc. This added a bunch of weight to the rear of the trailer and I know longer had the correct amount of tongue weight. I had to move the boat farther forward to correct the problem. Then Last weekend I was crawling around under the trailer fixing a tail light issue and noticed rubbing spots from the rollers wearing into the aluminum hull. This wear was nearly beer can thin in one spot. I repaired with a patch and marine sealer and then installed bunks to stop the rubbing issue.

Now this may not be a issue on a newer boat hull but something to think about if you plan on keeping your for many years.

Yes, it is easier to load and unload in low water and I will miss that aspect but in my opinion the bunks will work out better for me on my old boat.

Darren
 

Navy Jr.

Senior Chief Petty Officer
Joined
Sep 14, 2007
Messages
738
Re: Bunks or Rollers

I would not pull up anywhere without first securing the bow, bunks or rollers !!!!
If it can happen then it most likely will.

Agreed, I wouldn't either. But at very busy ramps we've all seen it done successfully countless times, haven't we? And whenever I watch someone do it, I always wonder if they have been at that particular ramp dozens of times before and just know they can get away with it, but that if they were at a ramp new to them they would probably secure the bow first just to be sure.

One of the more amazing ramp watching moments I had was when a fishing tournament was wrapping up and the boats were coming in. Those guys all had bunk trailers and their boats were out of the water faster than you could say "unsecured bow eye!"
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,313
Re: Bunks or Rollers

We had the VP of a large trailer manufacturer into talk with our Sport club a couple of months ago. It didn?t take long before the bunk vs. Roller support question came up. Much to my surprise he was very candid and said the popularly of bunk trailers is driven by dealer profits and misconceptions about the superior support provided by a bunk trailer.

When pressed on the support issue we offered up this test.

Take a very thin piece of metal, say 1/32? thick x 1? long. Try to slide it between the bunk and trailer the entire length and width of the bunk. You?ll be very surprised how little surface contact there really is.


His recommendations was if you wanted a bunk trailer was to go with a split, type bunk trailer.
 

idrownworms

Petty Officer 1st Class
Joined
Aug 7, 2008
Messages
224
Re: Bunks or Rollers

Every body has been talking about ease at the ramps. What about driving down the road?
Is the boat on a bunk trailer more secure than a roller trailer? Put another way, driving down the road and the winch strap breaks which trailer is more likely to dump the boat on the road?
 

Biggems

Petty Officer 2nd Class
Joined
Aug 8, 2008
Messages
148
Re: Bunks or Rollers

Every body has been talking about ease at the ramps. What about driving down the road?
Is the boat on a bunk trailer more secure than a roller trailer? Put another way, driving down the road and the winch strap breaks which trailer is more likely to dump the boat on the road?

That would deff. be rollers.

Right now my trailer has bunks but I am going to add 2/3 keel rollers down the center of the trailer to make centering the boat on the trailer even easier.
 

This_lil_fishy

Master Chief Petty Officer
Joined
Jul 23, 2008
Messages
841
Re: Bunks or Rollers

We had the VP of a large trailer manufacturer into talk with our Sport club a couple of months ago. It didn?t take long before the bunk vs. Roller support question came up. Much to my surprise he was very candid and said the popularly of bunk trailers is driven by dealer profits and misconceptions about the superior support provided by a bunk trailer.

When pressed on the support issue we offered up this test.

Take a very thin piece of metal, say 1/32? thick x 1? long. Try to slide it between the bunk and trailer the entire length and width of the bunk. You?ll be very surprised how little surface contact there really is.


His recommendations was if you wanted a bunk trailer was to go with a split, type bunk trailer.


Partly true. Yes, a good portion of the bunk will have very little to no support. However, there is still a much larger contact patch then there would be with a roller. Also the loss of contact force will be far more gradual then it would be with a roller. Also the amount of contact will be dictated by the number of supports. A 6' bunk with two support brackets will have two small contact patches, but as you add supports the number and size of contact patches will increase. This is simple physics...be aware the most 'factory' reps are salesmen with very little technical background. We see it in our industry all the time.

Ian
 

bill6999

Cadet
Joined
May 1, 2009
Messages
11
Re: Bunks or Rollers

I have had both as well. Had some problems in a cross wind with the roller type, making sure it would stay centered. Have not had the problem with the bunk style.
 

JZammetti

Petty Officer 2nd Class
Joined
Apr 20, 2008
Messages
181
Re: Bunks or Rollers

This is why I love this boating forum, ask a serious question, and get educated and sensible difference of opinions. I think I will keep my bunk trailer, since reading all your responses, my situation is I launch in deep water even at low tide, I am able to sink my trailer to a depth that makes it easy for me to launch and load. I am so glad to be a member here; I know I will be asking many, many questions. Thanks again for the responses and keep them coming. I will try the thin metal gap test and I will also look into those replacement bunks.
 

Attachments

  • myrig.jpg
    myrig.jpg
    9.4 KB · Views: 0

This_lil_fishy

Master Chief Petty Officer
Joined
Jul 23, 2008
Messages
841
Re: Bunks or Rollers

It is refreshing to have a difference of opinion without a lot of name calling in a forum. :D

Ian
 

Wee Hooker

Chief Petty Officer
Joined
Sep 11, 2005
Messages
618
Re: Bunks or Rollers

FWIW, my last rig used a combination. Two pivoting bunks provided much of the support but there were two keel rollers that shared the load and made retrieving/launching in the skinny stuff that much easier. My current trailer is Bunk only but I can see a few centering keel rollers in the future.

BTW, if slickness is the issue, try Liquid Rollers bunk lubricant. Really works!
 

JoLin

Vice Admiral
Joined
Aug 18, 2007
Messages
5,146
Re: Bunks or Rollers

Rollers for me all the way. Easy to launch, easy to retieve. Deep water, shallow water- makes no difference. I don't need to bury the trailer to do either, and nobody needs to stay in the boat to drive it onto the trailer.

A single long line attached to both bow and stern cleats allows my wife to stand on the dock and jockey the boat into position, while a second long line attached to the bow cleat lets me pull the boat forward onto the trailer bed. I tie that off to a cleat I mounted on the winch upright, then walk down and clip the winch strap to the bow eye. Done.

A roller trailer properly set up with a sufficient number of rollers poses no danger at all to the hull structure.
 

scubadoo73

Seaman Apprentice
Joined
Apr 28, 2009
Messages
45
Re: Bunks or Rollers

the last thing you need to take into account is if and when you need to replace rollers or bunks
I just redid my whole trailer and I did the cost crunching to replace 6 sets of double rollers (all rollers and bracket were no good) was going to cost about $500 and the cost to go to a bunk system was $200.
when the carpet needs to be replaced it's only $25 a side and then the pt
2x6 is only $10 per side very inexpensive compared to haveing to replace rollers
 
Top