Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: Too much transom weight?

Posted by WhalerSailor on 04/03/07 - 1:41 AM
#1

Cheers!
I have a 1975 Montauk with a BEAUTIFUL 1963 Merc 1000 "Tower of Power" hanging off of a Panther 135 6" setback tilt. That's a lot of weight! I'm killing myself worring about adding a kicker. I have a sweet running 1977 7.5 Mercury and think that may be putting too much to the transom. Can somebody give me some advise or am I worrying too much? Thanks, Dave

Edited by WhalerSailor on 04/03/07 - 1:42 AM

Posted by Jeff on 04/03/07 - 4:41 AM
#2

WhalerSailor,

In all honesty I do not think you will have a problem. I had a 4hp with internal tank merc kicker on the back of or 84 Montauk which had a Mariner (merc) 90hp tower of power. Never had a problem. Though the Merc 1000 might look heavy, it is not bad at all.

Posted by WhalerSailor on 04/03/07 - 8:52 AM
#3

Thanks Jeff,
Yeah, the straight 6 looks HUGE on the back and I never worried until the thought ofputting on a kicker. Does anyone out there know what these old firebreathers weigh?

Posted by Tom B on 04/03/07 - 5:13 PM
#4

My service manual says 90-115-140 and 150 all weigh 290 lbs.



WhalerSailor wrote:
Thanks Jeff,
Yeah, the straight 6 looks HUGE on the back and I never worried until the thought ofputting on a kicker. Does anyone out there know what these old firebreathers weigh?

Posted by Tom B on 04/03/07 - 5:15 PM
#5

The inline 4 cylinders (80 & 85 hp) weigh in at 244lbs

Posted by WhalerSailor on 04/03/07 - 10:46 PM
#6

Thanks Jeff & Tom,

Everyone says I should try it. It should be fine. I just don't want to be towed home with no transom!
Here's a picture of the 1000 and 7.5 together. The 7.5 had a 5" extension kit installed today taking it from 20" to 25". They seem fine and sturdy on the trailer not being slammed by waves.

Edited by WhalerSailor on 04/03/07 - 10:50 PM

Posted by Mike on 04/04/07 - 3:33 AM
#7

WhalerSailor,

Beautiful Setup. No way to give you a more definitive answer without some more info. Even with that there can be no guarantees, just best guesses.

Are there any signs of damage to the transom?
Any signs of stress or water intrusion there?

What you are worried about is a common concern. If your boat is well cared for with no transom damage, as I suspect it is given the obvious care given your motors, then go ahead.

We had a 1974 Nauset that at times had anywhere from 70 - 100 hp main motors (Evinrude & Johnson) and always had a 9.9 hp kicker on it. No problems. The only trouble we had with the kicker being mounted on the transom was having it stolen.

Mike



Posted by Tom W Clark on 04/04/07 - 7:29 AM
#8

WhalerSailor,

No problem. The transom will not fall off.

There seems to be a misconception that maximum transom weight ratings have something to do with the strength of the transom. They do not. They have to do with how the boat floats and the center of gravity which affects its performance.

A single modern four stroke weighs as much as what you have there. Don't worry, go have fun.

Posted by sraab928 on 04/04/07 - 7:31 AM
#9

Whalersailor - Thats one cool looking transom with those ole Mercs on there!

There is a member here who has a big 115 4 Stroke Merc (quite heavy) on the back of a Montauk. Im sure you will be just fine. Those older Merc towers were quite light for their size.

Good luck with the setup -

Posted by Demps on 04/04/07 - 7:38 AM
#10

WhalerSailer, that is a pretty cool setup. It makes my '79 "Tower of Power" look like a young buck. Set up a Personal Page and show us some more pics of your rig.

Demps

Posted by WhalerSailor on 04/04/07 - 10:57 PM
#11

HEY!
Thanks for all of the thought guys. Yeah, the hull is sound with no water. I feel much better about the project.

Demps, The kicker is actually a 1977-78 I just made a custom decal kit to match the '63. That's actually what I do - make signs.

I'm putting a page together now showing the re-vitalization of a '69 Sakonnet and this one - a '75 Montauk. No pics yet, mostly sources.

http://WhalerSailor.com

Thanks again everybody.