73Chrysler105
Chief Petty Officer
- Joined
- Sep 10, 2009
- Messages
- 407
Re: Restore 1988 Bayliner Capri SKI
That entire article from West is talking about using Epoxy so is that what you are using to do the repairs?
I will agree and be the first person to tell you I don't know everything, but I have done a lot of reading over the last two years and I research things ton before I get started on them. Sometimes its paralysis from analysis. I come from a big family of Engineers and myself went to college for engineering. If any of the big names here contradict me then feel free to disregard anything I say.
In the article the repair techniques they show, although it is highly unlikely, I can see a circumstance at a point of flex that the repair could actually be forced out since the repair is wedge shaped and the only bonding to the old stringer is the edge which is just the thickness of the wood stringer just a bit longer than the height. I would go to Oops thread and read how he produced longer stringers than the plywood available. I will have to do this same thing with my boat as my stringers are longer than 8 feet. If I was going to do a partial replacement of a stringer this is how I would do it since the bind between the new and old stringer is not in the same direction of the normal holding force of the entire stringer.
Also if you are not using Epoxy the repairs would need to be done slightly differently than the West Systems article because the bond is not as strong with the poly as with the epoxy.
Below is a simple paint drawing of the West Systems Repair compared to how Oops lengthened his stringers. The parts in gray would be assumed to be the good stringer sections for the repair.
Regarding the paint I don't know whether the Stripper would harm the gel coat. I cant imagine it would since its much harder than paint to remove. If I were doing it I would try sanding only first since its flaking off already, the 600 grit will dull the gel coat slightly but then a wet sand with 1000 or 1500 and polish with a buffer and it will shine like new. I might possibly be flaking too because of improper prep work when the paint was applied so it might come off even easier than all that. Again my two cents which isn't worth much.
That entire article from West is talking about using Epoxy so is that what you are using to do the repairs?
I will agree and be the first person to tell you I don't know everything, but I have done a lot of reading over the last two years and I research things ton before I get started on them. Sometimes its paralysis from analysis. I come from a big family of Engineers and myself went to college for engineering. If any of the big names here contradict me then feel free to disregard anything I say.
In the article the repair techniques they show, although it is highly unlikely, I can see a circumstance at a point of flex that the repair could actually be forced out since the repair is wedge shaped and the only bonding to the old stringer is the edge which is just the thickness of the wood stringer just a bit longer than the height. I would go to Oops thread and read how he produced longer stringers than the plywood available. I will have to do this same thing with my boat as my stringers are longer than 8 feet. If I was going to do a partial replacement of a stringer this is how I would do it since the bind between the new and old stringer is not in the same direction of the normal holding force of the entire stringer.
Also if you are not using Epoxy the repairs would need to be done slightly differently than the West Systems article because the bond is not as strong with the poly as with the epoxy.
Below is a simple paint drawing of the West Systems Repair compared to how Oops lengthened his stringers. The parts in gray would be assumed to be the good stringer sections for the repair.
Regarding the paint I don't know whether the Stripper would harm the gel coat. I cant imagine it would since its much harder than paint to remove. If I were doing it I would try sanding only first since its flaking off already, the 600 grit will dull the gel coat slightly but then a wet sand with 1000 or 1500 and polish with a buffer and it will shine like new. I might possibly be flaking too because of improper prep work when the paint was applied so it might come off even easier than all that. Again my two cents which isn't worth much.
