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Author Topic:   Trailer for 190 Montauk
Rick U posted 03-26-2011 01:04 PM ET (US)   Profile for Rick U   Send Email to Rick U  
I'm considering buying a trailer for my Montauk 190 and have a few questions. Is the boat supposed to be supported by keel rollers and bunks or are keel rollers there just for loading? I have the literature for the Karavan trailer (BW-3500-DB-78) and it rates the carrying capacity at 3085#s. Chuck from BW support recommends 4100#s. Whaler must have uped the trailers when they started offering bigger motors. I should go with a 4100# as 3085#s doesn't leave much for gear, right? Thanks.

Jefecinco posted 03-27-2011 09:42 AM ET (US)     Profile for Jefecinco  Send Email to Jefecinco     

I purchased a new 190 Montauk with the Boston Whaler supplied trailer. The 190 had a 135HP Verado installed. Keel rollers are not supplied nor are they needed. It is a bunk trailer. The maximum HP available in 2009 was 135 HP with the optional Verado engine. In 2010 the maximum HP was 150 with the optional Verado engine. There is no difference in weight between the two engines. Verados in 135 to 200 HP four cylinder models are identical except for the HP decal on the engine and the engine computer.

I've found the galvanized steel Karavan trailer to be a pretty exceptional piece of gear and highly recommend it. It is raining at the moment but if you wish I'll go out and get the model number off the trailer sometime today and provide it to you.


Rick U posted 03-27-2011 01:12 PM ET (US)     Profile for Rick U  Send Email to Rick U     
That would be great. Also does the Karavan trailer have a sticker that gives a load rating?
Jefecinco posted 03-27-2011 05:28 PM ET (US)     Profile for Jefecinco  Send Email to Jefecinco     

I assumed you'd want the Model Number, it's BW 4100 DB 12 ST-78. The data plate shows all kinds of stuff including rating, tire pressures, etc.

Check to see if the Karavan site has the maintenance manual available on-line. If so, the data plate will probably be shown.


wbullwin posted 03-30-2011 10:30 AM ET (US)     Profile for wbullwin  Send Email to wbullwin     
I don't own a 190 Montauk but a good friend of mine that does. One thing I notice is that the boat sits very high off the ground making it necessary to have a lot of water at the boat ramp plus very high trailering. I think the cause of this is that the 190 has a broad beam and the clearance between trailer fenders is small so the boat can't sit between the fenders and has to be on top. The trailer he has has 15" or 16" wheels which require big fenders. I have a 26' SeaRay on a trailer with dual axles and 14" wheels and my boat sits lower to the ground than his 190. I also have a 170 Montauk so that is why I am on ContinuousWave. I didn't want anybody to think a "SeaRay Guy" was spying on the Whalers.
Rick U posted 03-30-2011 09:44 PM ET (US)     Profile for Rick U  Send Email to Rick U     
I'm getting close to ordering a trailer and every one I've received quotes from recommends duel axels w 14" tires. I'm not sure how low the boat will sit but between the torsion axels and the keel rollers I think the overall height will come down. I've owned Whalers for 27 years but I have very little experience with trailers as I have always kept them in the water. From my research it looks like BW packaged the 2007 boat w a trailer that was close to under rated for the boat. The new ones come with a sturdier trailer.
Jefecinco posted 03-31-2011 09:00 AM ET (US)     Profile for Jefecinco  Send Email to Jefecinco     

A tandem axle trailer is serious overkill for a 190 Montauk. As a previous owner of a tandem axle boat trailer I can tell you a single axle trailer is much easier to tow, back, maneuver in tight quarters and maintain. Singles are less expensive to buy, also.

The 190 rides very well on the Karavan trailer we discussed before. The boat is easy to launch and retrieve in every situation I've faced over the past nine months or so of ownership. Keel rollers would serve no purpose with this setup. For a new trailer mine has had a lot more use than most. Following the purchase in St. Louis, MO we towed the boat home to coastal Alabama. On that trip we had some very bad weather in Mississippi and the high wind had no effect on our tow other than to slow us down due to low visibility. Of course we boat year round down here and as you'd expect in the South we have plenty of "unimproved" ramps.

"A lot of water at the launch ramp" is not necessary to launch a 190 on a Karavan single axle 4100 series trailer.

Of course, if you are more comfortable with a tandem axle trailer with 14" tires and keel rollers that is what you should have. However, slightly smaller diameter tires are not going to lower your Montauk very much at all because the distance between the fenders will be the same and the fenders will be only slightly lower.


Rick U posted 03-31-2011 06:36 PM ET (US)     Profile for Rick U  Send Email to Rick U     
Thanks for all the input, I need it. I know the easiest thing to do would be to buy a new Karavan 4100 but there are none near by and ordering one would be costly because of freight charges. I was quoted for a single axel and a double axel trailer. The single is a 4200 GVW and has a load rating of 3,340# and goes for $3313.00 out the door. The double axel (disk brakes on one axel) has a GVW of 5000# and has a load rating of 3910# and sells for 3462.71. I'm not necessarily trying to lower the boat on the trailer. I was leaning toward the double axel because it can carry more weight and only cost $148 more. I only inquired about keel rollers because the diagram in my owners manuel shows a roller on one of the cross members. Not sure why the roller is there but it appears to not support anything when the boat and the trailer are level.

Please guide me through this.

Jefecinco posted 04-01-2011 09:29 AM ET (US)     Profile for Jefecinco  Send Email to Jefecinco     

OK, you have a 2007 Montauk 190. I don't recall the engine choices but I believe the maximum would have been around 115 HP and a 90 HP may have been offered???

The Verado engines available on later 190s are four stroke supercharged engines. Because the Verados are four cylinder models they come with up to 200 HP in the same configuration except for the engine computer, consequently they are rather heavy engines even in the lower output models of 135, 150 and 175 HP.

Based on the above I'm guessing your boat/engine package is considerably lighter than the Verado powered versions available in later production years. Therefore, I wonder if you really need a trailer with a higher capacity than the 3500 you mentioned in your opening post.

Safety and a cautious approach are certainly useful when dealing with boats but one can be so cautious that it causes needless expense. I suggest you take your fully loaded boat and trailer to a certified scale and weigh them. If the weight is within your trailer's capacity specifications you have no reason for concern. Excess capacity is unnecessary for safe boat trailering. I believe that typical trailer capacity specifications are so conservative that exceeding the weight rating by a couple of hundred pounds is not a problem unless the load will be towed over extremely poor roads or at speeds above 65 MPH or so for long distances.


Jefecinco posted 04-01-2011 06:46 PM ET (US)     Profile for Jefecinco  Send Email to Jefecinco     

Sorry, but I left something out.

A way to reduce trailering weight is to remove all the portable gear from the boat and transport it with the tow vehicle. Upon arrival at the ramp install the gear, launch and go. Upon your return to the ramp reverse the process.


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