old jon boat transom reinforcement

[lncoop]

Re: old jon boat transom reinforcement

Your transom brace needs to look something like this (scoll down a little bit to see it).
http://www.myjonboat.com/transom.htm
You may have to have one fabricated as it probably needs to be aluminum and most likely should be welded to the bottom of your boat and to the transom. Plus, I don't think wood would provide quite enough rigidity. Anyone?

 

[Mizzie]

Re: old jon boat transom reinforcement

If you seal the bolts below the waterline with 3M 5200 you will be fine.
You should take a look at www.tinboats.net lots of good info.

I picked a tube up at home depot, Big question before I apply it and possibly waste a good tube of the stuff... The package says its good for thru-hull fittings which is perfect.. HOWEVER! It states its uses for wood, fiberglass.. No where does it say aluminum or metal.. Should I still use the stuff ? I already cut some nice transom supports that seem like they'll do perfect.. I just want to make sure I'm not going to have any uninvited leaks!

Another question of mine has to do with what everyone mentioned about wood on the outter transom as bad.. I was at bass pro shops the other day picking up some things for my RV and checked out the new 10-12-14 foot jon boats on display.. I was impressed, very sturdy! they had about a 10x10 piece of painted plywood centered on the outter transom that ended about an inch above the drain plug hole.

should I re-consider putting something similar on the outside of my transom for more insurance of stability? or is it a total no no for an old jon boat? (I realize the new ones are better built)

 

[ezmobee]

Re: old jon boat transom reinforcement

5200 is fine for aluminum. Lots of it on my project. Nothing wrong with a wood transom plate.....as long as it isn't pressure treated.