Teak Swim platform install

LFK

Petty Officer 1st Class
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Sep 7, 2005
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I have a 1990 Wellcraft 170 Classic open bow, w/Mercruiser 3.7 I/O.<br /><br />I recently purchased an after market teak full-transom swim platform, to replace the tiny one that came with the boat. I have all of the mounting hardware, but am looking for advice on mounting it.<br /><br />I'm thinking I should go alittle high with it, in an attempt to avoid the stern drive motor. Or...I guess I could hinge an opening in the middle, as thay have here: http://www.woodworkingforwatercraft.com/platformio.html <br /><br />Tips? Suggestions? Can I just use some bog lag bolts to attach this baby? (Of course, I would put some of marine epoxy into the holes to seal them up).
 

trog100

Senior Chief Petty Officer
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Dec 1, 2004
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Re: Teak Swim platform install

bolts going right thru are stronger but lag-bolts would do the job.. if u can get at the other side i would use bolts right thru.. i would also mount the platform "higher" assuming it didnt need to be too high.. <br /><br />trog
 

fishnfiend

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Aug 11, 2005
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Re: Teak Swim platform install

I'm going to install a similar platform on our '86 Searay. In mine, there is an extrusion in hull the above the existing platform which limits how high it can be mounted, so I'll be installing either a hinge or leaving an opening for the outdrive (in trailer position). I wouln't want the platform too much higher for swimming anyway.<br /><br />As for the mounting bolts (stainless, with washers inside and nylock nuts), the proper installation is to drill the holes about 1/8 incch larger than necessary. Tape the inside and fill the holes with epoxy putty. Let dry, then drill the holes the size you need in the center of the epoxy. (Seals the wood around the bolts. Use marine sealer when putting bolts in and you are good to go).<br /><br />Good luck!!
 

lakelivin

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Aug 19, 2004
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Re: Teak Swim platform install

What about the position of the platform when you're under way? Is there a point below which it will 'drag' in the water while you're boating at a certain speed/ trim level?<br /><br />e.g., if I'm pulling a wakeboarder or tuber, I'm going reasonably slow (high teens, low 20's mph) and after planeing I trim the drive as low as I can without coming off plane in order to make the biggest wake possible. This of course pushes the stern down. <br /><br />Haven't ever looked at how much clearance there is betwen the back of my swim platform & the water while boating under those conditions, but I definately wouldn't want the platform to 'drag' in the water. <br /><br />Otherwise, I'd think you'd want it as low as possible (without causing problems with outdrive clearance/ operation, of course).<br /><br />Btw, neat looking setup on the link you posted. There's just something about teak that really adds a touch of class to the look of most boats imho. I've got a small teak swim platform, teak ski locker cover, and teak trim strips on my older 17' bowrider. Although it's a close call, this is one area where I think it's worth the extra maintenance work to have a 'decorative' material vs. a no maintenance alternative.<br /><br />One thing you may want to keep in mind once you install the full length swim platform is safety around the stern drive. With side mounted platforms there's a bit more 'built in' protection w.r.t. swimmers jumping off & hitting the drive/prop. With the full length one, swimmers not familiar with an i/o might be much more at risk of jumping in from the middle and landing on the drive/prop.
 

LFK

Petty Officer 1st Class
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Sep 7, 2005
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317
Re: Teak Swim platform install

Good points, everyone....thanks.<br /><br />I don't think the platform will drag. I also have soem teak through-out, so it will be a nice addition. <br /><br />One question: How high is to high?
 

lakelivin

Lieutenant Junior Grade
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Aug 19, 2004
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1,172
Re: Teak Swim platform install

just curious- shouldn't the question be how low is too low? wouldn't you want it as low as possible to make getting in and out of the water as easy as possible?
 

fishnfiend

Petty Officer 2nd Class
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Aug 11, 2005
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115
Re: Teak Swim platform install

This is a jet boat, but I've seen numerous v-drives with the swim platform almost at water level also. It apparently does not interfere with boat operation.<br /><br />Of course, us I/O owners have the outdrive to contend with.<br /><br />
de_1_b.JPG
<br /><br />Here's an I/O:<br /><br />
step215ec.jpg
 

QC

Supreme Mariner
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Mar 22, 2005
Messages
22,783
Re: Teak Swim platform install

You definitely don't have to worry about height underway. When on plane, even a terribly inefficient plane, there will be absolutely no water on the transom except possibly spray from the drive. Just have someone else drive and take a look. Nothin' nada, zip . . .<br /><br />I would do the hinge thing before I would leave a cutout. If someone falls between, that would be a biiiig owweee . . .
 

LFK

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Sep 7, 2005
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317
Re: Teak Swim platform install

I could be off, but it looks like the top of the swim platform on the I/O is about a foot above the water. Measuring my set up (while in the driveway) that's where I would have to mount mine, unless I modify it with either a hinge or a cut out, or a combination of both. When using a swim platform like the one pictured on the i/o, does the height difference "feel" substantial? In other words, if I'm sitting back there, hanging my feet in the water, would the difference between the two experiences be large?
 
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