Transom Area Bouncy on Pontoon

jiju1943

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We just bought a used 24 foot pontoon and are getting it water ready. I noticed yesterday when I pushed down on the foot of the motor that the floor seemed to bounce. I plan to install a pretty good aluminum angle from side to side and bolt the trough the motor is mounted to, to the angle, does this sound like it should do the trick?
 

Illinoid

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I'm not quite sure I understand what you are doing but a solid transom is very important, the first thing I did to mine was glue up a new transom and have stress cracks welded and reinforced.
 

GA_Boater

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Is the transom moving or is the pod moving? Or both?
 

HotTommy

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Pod.jpg
 
Last edited:

jiju1943

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From the picture Tommy posted, it looks like the supports have some flex in them. I will check to see if there are any cracks in the supports. But the pod is bouncing up and down and with a 85 HP motor pushing the boat, it is not going to last like that. I plan to reinforce with angle aluminum bolted, is that basically what others do?

I really appreciate your help.
 

jiju1943

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By the way, Tommy, how do you like the hard top on your toon?
 

HotTommy

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jiju,
I like a lot of shade. I started with a custom double bimini top that worked well, but it caught a lot of air while cruising and hurt top speed a little. It was up during a strong T-storm last summer and was damaged. I replaced it over the winter with the hardtop in my photo. It is much more streamline so the boat is faster. I designed and installed it myself, so it's not the easiest thing to put up and down, but two people can lower it for towing on the trailer. All-in-all, I like the hardtop better than the soft top.

As for your bouncy engine pod, here's what I did. Last year I went from a 90 HP engine to 150 HP and the old pod was not right for the new engine. I found and installed a stronger pod. To better support the new pod I got 8' long aluminum angle that was just the right size to slide between the top of the toons and the floor. I removed the side trim, slid the angle aluminum pieces into place, and drilled and bolted them to the toons and the engine pod with stainless bolts. ... If your problem is indeed with the supports. that might work for you. You might even be able to put them flush with the existing supports and bolt the new ones to the old ones.
 

jiju1943

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Thanks Tommy for letting me know about the hard top, I may go that way also. One thing that is keeping me from a hard top is first of all finding one, the second reason is some bridges in this area are really low and a hard top being heavy and hard to raise could be a problem.
I appreciate the information on how you installed the additional reinforcements for your pod. I am amazed at how strong aluminum is.

Illinoid, The transom wood is still in good shape, although it doesn't look great. I did find one slight stress crack about 3/8 inch long so I will have that fixed soon. Thanks for asking.

GA_Boater, I apologize for not acknowledging your response, we are practically neighbors. Is Bondo still a mod here?
 

GA_Boater

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GA_Boater, I apologize for not acknowledging your response, we are practically neighbors. Is Bondo still a mod here?

... is ANY GREASE still better than no grease at all? ;)

I guess SK answered that. ;) Bondo is still here helping out. Yep - Almost next door neighbors.

The reason I asked about the transom flexing or pod or both, is if you have plywood, it can rot and flex. If the pod is moving, the pod or the support crossmembers could be cracked. Or a combination of the three, we've seen that in the forums.
 

jiju1943

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I guess SK answered that. ;) Bondo is still here helping out. Yep - Almost next door neighbors.

The reason I asked about the transom flexing or pod or both, is if you have plywood, it can rot and flex. If the pod is moving, the pod or the support crossmembers could be cracked. Or a combination of the three, we've seen that in the forums.
A funny thing happened a few years back, I am a mod on a DIY forum where Bondo is a member, I hit the wrong button one night and banned him, talk about red faced. :)

I got under the pontoon today and I did not like what I saw. In the photo above that Tommy posted, the outside floor support is the only one there on my toon. The is another one about 2 feet from the outside one which is at the end of the pod. I can not believe that one outside floor support is holding that 85 hp Rude motor up. There is no wonder it is bouncing, it can't do anything else except fall off.

One thing that really was not what I wanted to see, is a crack in each log where the weight of the motor is transferred from the floor support that holds the weight of the motor, to to logs. The cracks are about 2 or 2 1/2 inches long, but any crack is too many. Once I jack the motor up and install two large aluminum angles all the way across the boat and get the two cracks welded and the small stress crack on the transom, I should be good to go there. I will have the logs reinforced at those cracks.

Another thing I saw under the toon today was there are 4 upright guide posts that someone bent the dickens out of one of the trailer cross members when it pushed the guides forward at a slight angle. I will solve this problem with some added guides or a 12 foot runner to guide the toon on the trailer.

I apologize for the long post. I plan to replace the carpet on the runners, I bought a thinner outdoor carpet. Will that be OK for the runners instead of the thicker carpet? I also suspect the wood in the runners is treated, how can I seal the wood before I install the new carpet? Sorry for the Book.
 

HotTommy

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I'm no expert, but I view the carpet on the runners as a consumable item. Choosing one carpet over another may change how often they have to be replaced, but sooner or later .......

The original engine pod I mentioned above was cracked when I bought the boat. I had that crack and a few other small ones welded up. It held up well for the year I used it. I think I'd do your job just as you described.
 

jiju1943

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Thanks Tommy, I contacted a fellow who does aluminum welding so looks like we are on the right track.

I appreciate you.
 
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