stupid question about molds: How is this gonna popoff without being 'trapped'?

[Squidly-Diddly]

Sure looks to me like the stringer where the main upper surface meets the mmain lower surface sticks out a good inch at about 30 degrees the wrong way from vertical (clearly visible at stern), and would surely prevent the mold, or the boat being built on the mold, from coming off in one piece.

 

[wet feet]

Ever heard of a split mould?

 

[Squidly-Diddly]

Never mind, I get it.

 

[Mr Efficiency]

Yes, it was a split mould for sure, which does make you wonder why they designed it that way, almost as if that was an afterthought.

 

[SamSam]

.

>>>>>>>>>> http://www.boatdesign.net/forums/projects-proposals/fairey-hunt-18-a-42011.html <<<<<<<<<<

>>>>>>>>>> http://www.boatdesign.net/forums/projects-proposals/new-project-48278.html <<<<<<<<<<

.

 

[whitepointer23]

Yes, it was a split mould for sure, which does make you wonder why they designed it that way, almost as if that was an afterthought.

Have you forgotten the early haines. Huntsman and mustang hulls mr e. They were all split mold .

 

[Mr Efficiency]

Have you forgotten the early haines. Huntsman and mustang hulls mr e. They were all split mold .

Yeah, I realise that, I don't know why they opted for that chine widening addition that causes it to need a split mould, wasn't such a brilliant idea as the fact it was later dumped suggests. But I have seen a Formula 233 with similar (though larger) alterations, the supposed reason being to firm it up at rest. I doubt that made much difference.

 

[whitepointer23]

I tbink it was an r c hunt idea. I had 2 mustangs with it and both were very dry boats.

 

[Mr Efficiency]

I think you are right, it was Hunt's idea, but I can't see how it achieved anything that couldn't have been equally well accomplished without resort to a split mould. It might have given the visual impression of a deeper vee, than just having a flat at the chine by extending the topsides further down. And deep-vee was the buzz-word selling point back then.

 

[whitepointer23]

I think you are right, it was Hunt's idea, but I can't see how it achieved anything that couldn't have been equally well accomplished without resort to a split mould. It might have given the visual impression of a deeper vee, than just having a flat at the chine by extending the topsides further down. And deep-vee was the buzz-word selling point back then.

I just thought they were good spray rails. Every builder would agree with you because no one has used split molds for the last 40 years that i know of.

 

[wet feet]

I just thought they were good spray rails. Every builder would agree with you because no one has used split molds for the last 40 years that i know of.

Really?I know of several and if you look around you will see evidence in all sorts of places.How else would you mould in portlight recesses or fender flats or liferaft wells-well you get the idea.

 

[whitepointer23]

Really?I know of several and if you look around you will see evidence in all sorts of places.How else would you mould in portlight recesses or fender flats or liferaft wells-well you get the idea.

Sorry. I was referring to the old style v hulls in australia. I don't know what goes on in other countries. I stand corrected.

 

[Mr Efficiency]

There would be few boats in that smaller size range made with split moulds. I am still a little puzzled why those Hunt boats had that particular feature.