Subject: Re: Re:: Re: [harryproa] Hull construction materials
From: "Doug Haines doha720@yahoo.co.uk [harryproa]" <harryproa@yahoogroups.com.au>
Date: 6/15/2018, 2:10 AM
To: "'.' eruttan@yahoo.com [harryproa]" <harryproa@yahoogroups.com.au>
Reply-to:
harryproa@yahoogroups.com.au

 

I can see the HP becoming popular not only with high end ccruisers but also with backyard, cheapo beachcat type builders. The designs are now so simple that you really would not need a set of plans to be able to get something workable on the water.
I am thinking of budget bargain basement type buiders here. someone who has a spare old beach cat rig and some spare plywood and screws, or whatever materials they have to hand.
If followed carefully using all the info available now about HP's built and sailed or failed someone could put almost anything out there and have it work OK I reckon.
There are a couple of important ratios or sizes of things that are needed to get leeway and steerage to work but otherwise as long as someone follows the general principles of narrow, thin, long and as light and minimal as possible it should be easy for the lower end of builders to do.
Separated from proper builders of bigger boats who should probably all use Int Fuse. 
Plywood would be an obvious second choice to do a project boat with. 
Perhaps this is bad news for the plan selling, but overall the popularity would mean that HP's or at least their style would become a lot more common than just mid to large size cruisers.

You also would have the kind of dyed in the wool wood-worker type who cannot resist making things with wood.
You shouldn't inhibit these strange urges people have.
Better they satisfy their simple urges.

I don't know what statistics there are of how many boats are made with ply. Your first dinghy or kayak is often going to be wood surely.

I know mine were.



On ‎Thursday‎, ‎14‎ ‎June‎ ‎2018‎ ‎11‎:‎01‎:‎01‎ ‎PM‎ ‎AWST, '.' eruttan@yahoo.com [harryproa] <harryproa@yahoogroups.com.au> wrote:


 



| Rob will probably want to kill me for suggesting this, however ..
|
| I think some builders would benefit from kit support. That is to say. not the usual developed hulls which take some work to move around the country or further. But as a replacement to the plywood idea, infused foam panels in whatever dimension works, be it 8x4, 10x5 etc.

Imho, having done wet layup, tabbing, sanding, et. al., I was attracted to the promise of the opposite of ply construction.

The Idea that one can flat infuse almost everything, and simple box mold the rest, with fit together self aligning male female joints, almost never touch or be exposed to epoxy, or, worse, is just awesome. No tabbing! No sanding? No touching glue!

I can see no good down the path of ply construction. You still have to glass both sides, at wet layup ratios of expensive glue. In awkward positions and varying finishes and quality.

So I honestly ask, what can you see being gained down this path?

As to kit support, to me, kits mean paying more, and doing less.

I think its entirely reasonable to help a builder find a composite company who will fashion a HP to some level of completeness, and probably said company will be very happy to get paid to learn an awesome technique.

| The differences would be things like prepped tabs and windows are a bit difficult to pre build into the panels.

In theory, a kit might not need tabs.

If one could find a composites company that will infuse and flat pack almost the whole boat to the builder, on demand, for final assembly, as well as glue tubes or whatever might be needed to final assemble the boat, that is an awesome kit, right?

Windows in my aviation experience are pretty simple. One routes out patterns on both sides, and removes some foam, slides in a lexan window from one side, and tabs in three sides to hold it. I don't know if that might work in boats. I think opening windows are needed on boats.

| It would perhaps be more like a plywood boat, cut the sheets, glue the parts together.

Why not just glue the parts together from a flat pack?

| just an idea for which the 40 is probably better disposed than most.

A flat pack might also fit a 50, or a 60?

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Posted by: Doug Haines <doha720@yahoo.co.uk>
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