Hi I would like some advice on how to fit an A frame , I can buy a factory made A frame but the trouble is it needs to be fitted to the floor, is there any product such as epoxy resin that I can bond the base to the floor as I am reluctant to cut the floor to bolt it in, thanks
Whilst there are some very effective epoxy resin adhesives available I believe that S/S bolts are required due to the harsh environment of shock loads etc etc .
It is not too difficult to cut a hole in the floor (only just big enough to get your hand and spanner into) with a hole cutter and once the A Frame is securely affixed you can resin seal the edge of the holes (one each side!!) and then fit an appropriately sized inspection hatch. Not only will this be watertight but it will allow you to check the bilges at any time in the future.
If done properly it is most unlikely to impact on the integrity of the boat, but if you are not sure of the structure of the hull/decking in the area selected you should seek advice from the RIB Builder before proceeding
If you don't wish to go down this route, epoxy resin and big S/S self-tapping screws may well be sufficient if the A Frame is not too large and you have not got much equipment stapped to it.
Ribcraft seem to favor the tramson idea, I assume from what biggles just said its like that on his and certainly is on my 4.8. It's not a great way of doing it IMHO as it really isn't as strong as through the floor as well. I used to be able to tow off the one I had on Cormorant (4.1m) as I bolted it through the transom and the deck. The double on the Ribcraft is quite wobbly dispite its very heavy duty apearance.
Mines through the transom and floor. Therefore does a couple of jobs. But if its not factory fiitted just thought it might be easier to go thro transom. Obviously bearing in mind you don't want to pull skiers with it.
Sounds reasonable. Now I've seen the pic I'd attempt to do what you say. However how strong is that part ? If it has wood inside then no problem. If not wait and see if anyone who has that boat can confirm if its strong enough.
