all welded aluminum 16' boat transom addition

[rjrobin2002]

I have a 16' aluma-weld boat that I put a brand new 50hp ETEC motor on. The new motor is significantly "my guess is 200 lbs" heavier than the 91 40hp evinrude I replaced and now the transom sits too low and the boat does really bad in shallow water as far as the prop hitting the bottom. I run in alot of shallow water here in Louisiana and I have heck trying to follow my friend in these waters. I am thinking I could get alot of benefit from adding two 12'x12'x20' boxs to my transom on each side of my motor and fill them with foam before welding the top on them. My thinking is that this would lift my transom several inches which would also lift my motor out of the sand several inches. Probably help my plaining out also. What do you guys think?

 

[mercury713]

Re: all welded aluminum 16' boat transom addition

Worth a try without buying a new boat.
I would give the bottom a curve

Tig weld or maybe even mig with gas.

Maybe even bolting on

get copyrights on it

 

[npauls]

Re: all welded aluminum 16' boat transom addition

Could you just add a manual jackplate to your boat to life the motor higher?


Nate

 

[JimS123]

Re: all welded aluminum 16' boat transom addition

My guess is that it would be a waste of time. Just add a jackplate or power trim and you'll raise the motor just fine, while improving your performance as well.

 

[rjrobin2002]

Re: all welded aluminum 16' boat transom addition

I have thought of a power jack plate, but have never rode in a boat tha had one. How would you raise and lower the motor with a manual jack plate? I have power trim already, but the jack plate will not address the motor being heavy and causing the transom to sit to low in the water. I do think the jack plate would help alot. I wonder if a jack plate and adding the flotation pods to the rear would be a good combo?

 

[sublauxation]

Re: all welded aluminum 16' boat transom addition

Are you sure something else didn't change in your set-up? A 50 ETEC weights about 240 lbs, a 91 40 Evinrude weighs about 190lbs. 50 lbs is not much more than a 6 gallon tank of gas.

 

[rjrobin2002]

Re: all welded aluminum 16' boat transom addition

I guess I was exagerating. The ETEC is much larger and seemed alot heavier. I picked up the 40 with a friend easy and we could not pick up the ETEC very well at all.

 

[sublauxation]

Re: all welded aluminum 16' boat transom addition

As a fisherman I fully appreciate exaggeration, and I kinda figured you were. That damned emissions stuff is heavy nowadays, but I'm surprised it's making that much of a difference in how your boat sits. It sounds like for what you want to do an automatic jack plate is the way to go...to run as skinny as possible, though moving the motor back may cause the transom to sit a bit lower. Adding boxes is probably a lot more work unless you're worried about water over the transom.

I have a 90 ETEC and It's been a great motor so far, hope yours works out well too.

 

[5150abf]

Re: all welded aluminum 16' boat transom addition

To answer your question, yes the boxes would lift the transom, how much I don't know but it would add bouyancy to the boat.

I think I would just go with welded boxes though and skip the foam, it actually adds weight and can get water logged, when you build them just leave and inspection hole to check for water.

 

[lckstckn2smknbrls]

Re: all welded aluminum 16' boat transom addition

Pods would add buoyancy at the stern.

 

[pootnic]

Re: all welded aluminum 16' boat transom addition

Like said above,foam doesn't help to make your boat float higher in the water,if anything it would sit lower.
Foam is there so your boat will swamp and not sink.

Google pods on/for jon boats,lots of info.
Going to lose some preformance but they may be what "your" looking for.
Theres an angle for installing the pods also,again lots of info.
People love em or hate em.
Is your boat rated for the 50hp?(probably is)
Can you move some weight forward,batteries,fuel,livewell..etc?