How big should the backing plate
- Thread starter Timo42
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Backing Plate
The plywood is well large enough, but scratch sand it and the inside of the hull with 80 grit; 'glue' in place with something like PC-7 and coatt eh entire exposed area with two coats of West System Epoxy to seal out moisture. I'd use 1/4x20 oval or round head stainless steel Philips head bolts with fender washers and aircraft bolts.
The plywood is well large enough, but scratch sand it and the inside of the hull with 80 grit; 'glue' in place with something like PC-7 and coatt eh entire exposed area with two coats of West System Epoxy to seal out moisture. I'd use 1/4x20 oval or round head stainless steel Philips head bolts with fender washers and aircraft bolts.
I would use a single piece of plywood.
I am not sure how wide your ladder is, but I would use a single piece (if possible) to span both of the mounting brackets. If the space permits be sure to have 2-3 inches to the outside of each bracket. It is not a bad idea to epoxy or varnish the wood to prevent it from absorbing moisture. Be sure to thru bolt the brackets and use ny-locs or double nut the bracket. Of course you will want to use a good sealant under the brackets to prevent any leaks. Don't use any sealant that you cannot remove (ie: 5200).
I am not sure how wide your ladder is, but I would use a single piece (if possible) to span both of the mounting brackets. If the space permits be sure to have 2-3 inches to the outside of each bracket. It is not a bad idea to epoxy or varnish the wood to prevent it from absorbing moisture. Be sure to thru bolt the brackets and use ny-locs or double nut the bracket. Of course you will want to use a good sealant under the brackets to prevent any leaks. Don't use any sealant that you cannot remove (ie: 5200).
The thing is
this is a narrow ladder with one bracket, 3/8 bolts, I bolted it up without gluing the backing plate on and saw more flex than I liked, I am thinking I should add some mat below the backing plate where the lower support contacts the hull since that is where the hull is flexing most, I will try to get a pic tomorrow. thanks, Tim
this is a narrow ladder with one bracket, 3/8 bolts, I bolted it up without gluing the backing plate on and saw more flex than I liked, I am thinking I should add some mat below the backing plate where the lower support contacts the hull since that is where the hull is flexing most, I will try to get a pic tomorrow. thanks, Tim
Novelman called this morning and will be staying
at the guest slips this coming 3 day weekend. The guest slips are .50/ft. Get one early they should fill up fast with this weather. As far as the ladder is concern, the load from the ladder is on a shear and not lateral to the transom and is therefore not as critical. Frank
at the guest slips this coming 3 day weekend. The guest slips are .50/ft. Get one early they should fill up fast with this weather. As far as the ladder is concern, the load from the ladder is on a shear and not lateral to the transom and is therefore not as critical. Frank
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