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Detuning a Penultimate International 14?

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davidyacht View Drop Down
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Post Options Post Options   Quote davidyacht Quote  Post ReplyReply Direct Link To This Post Posted: 19 Apr 21 at 8:50pm
Don’t think that the stump was original, the Ovy Howlett that we had 1301 still had a hog stepped mast 
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JimC View Drop Down
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 21 at 10:33am
Hmm, yes, I very much doubt that setup is original, but I would definitely want lowers with any distance of gooseneck above mast. The kicker load is going in the mast whatever.

The big question is what are you planning to do with mast and sails. And a second question, which you probably can't answer, is how well does the rig you've got actually work.

A mainsail for a properly designed twin spreader rig will have entirely the wrong luff round to be used without caps, but there was a tendency in some classes and some places to just bung caps on a single spreader rig to hold up a kite downwind without much thought about upwind. In my opinion that was not a good rig, but if you have one taking caps off isn't an issue.
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Post Options Post Options   Quote skslr Quote  Post ReplyReply Direct Link To This Post Posted: 26 Apr 21 at 9:04am

This week-end we  weighed the hull: About 89 kgs is pretty goodto me, considering some blocks and the mainsheet base are missing it should be more or less the minimum weight of 30 years ago.

While attending some holes in the underside of the hull I realized that it was already built out of  foam sandwich. I always believed the spaceframes kind of became obsolete with sandwich construction?
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 26 Apr 21 at 12:16pm
It took some time to realise there were better ways of doing things. Its not so much that space frames are bad per se but that those big fabricated aluminium constructions were expensive and heavy, especially compared to having the same strength built into internal framing with carbon. And also the 14 rule set of the time tended to push people down odd paths. Neither expensive nor heavy were significant issues for the 14s of that period!
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Post Options Post Options   Quote Lukepiewalker Quote  Post ReplyReply Direct Link To This Post Posted: 10 May 21 at 6:36pm
Until the 1996 unification foredecks weren't allowed, so spaceframes were very much the thing.
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Post Options Post Options   Quote piglet Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 21 at 9:21pm
That space frame looks identical to the one we had in 1188, I think that boat went to Belgium?????
I'm sure the number will be in the hull somewhere.
1188 was a single trapeze rules converted to twin trapeze rules, great boat but the mast was long, heavy & didn't bend at all!
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Post Options Post Options   Quote piglet Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 21 at 9:22pm
RS400 rig?
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Post Options Post Options   Quote skslr Quote  Post ReplyReply Direct Link To This Post Posted: 12 May 21 at 2:06pm

We do not really know the sail number of our current i14 as the paperwork is lost and we did not find any number on the hull yet. But it looks like it was built for asymmetric kites right away, so it should be after the rule change in 1989.

 

The aluminum mast would still qualify as heavy (though shorter as it is stepped on top of the space frame) but I hope it will bend somewhat at the top due to being tapered.

 

There are probably only 2 or 3 RS400 in Germany so spare riggs will be hard to find. Sail area would be on the high side of what we are targeting and I am not sure how well they would take a single trapeze.

 

However we looked at the suggestion to use a 29er rig again: Actually there are quite a few 29er for sale to due to “serious” youth teams moving on. Maybe we should talk some of the teams into selling their spare parts/sails separately and build a rigg from that??? I guess that would break our “low budget approach” and we would end up paying ten times the money for rigg & sails compared to what we initially paid for the boat J

 

Today will be another day putting glass&epoxy on rudderblade  and daggerboard, at the same time the parcels with parts for the “bespoke” rudder stock we are intending to  build are arriving….


Good news is that pressure testing the hull went kind of o.k., even though the hull does not meet the class rules from back then anymore.

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Post Options Post Options   Quote MikeBz Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 21 at 1:17pm
Originally posted by davidyacht

Don’t think that the stump was original, the Ovy Howlett that we had 1301 still had a hog stepped mast 

We had the first customer Ovy Howlett 1B, 1302, and that was stumped from new.  At my request the spaceframe included an aluminium plate underneath the rectangular section, on top of which I put the mast step and underneath a section of old mast as the stump.  I don't believe it's the one in the pics as the plate on which the step sits is somewhat smaller.

Originally posted by skslr

We do not really know the sail number of our current i14 as the paperwork is lost and we did not find any number on the hull yet. But it looks like it was built for asymmetric kites right away, so it should be after the rule change in 1989.

If it is a Howlett 1B then it will be 1990 or later.  The first one was built & demoed in 1990 and production started that winter.

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Post Options Post Options   Quote skslr Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 21 at 6:57am

Another update:

Kite

We hoisted the one that came with the boat. The front leach is way too long. It also says “2003” and a name of a guy that also took part in the 2003 POW/Euros at Hayling Island that we watched from our first Penultimate (I cannot really claim we “competed” in any way, we just have been there out on the water…). The guy had a current boat back then so the kite most likely is intended for post-95 rules rigg.

But a RS800 kite fits quite well.

We figured out a single line system for the kite pole. These boats still had an extra line to extend the pole when they were built, but all the blocks and cleats had disappeared anyway. Our new halyard/retrieval line is a little thin but ok when wearing gloves…

Rudder

We (kind of) finished our DIY lifting rudder based on the partially rotten original fixed rudder. It looks pretty agricultural (everything mounted to two rectangular 3 mm aluminum sheets), but it works…

Mainsail

One was very tired below the sail numbers, so my wife simply cut it horizontally and is now putting the reinforcements for clew and tack on the lower corners of the upper part. The upper part should be about 8 sqm so together with the 5.5 sqm jib it will be a decent sail area for a single trapeze boat.

First sail

We used the other main sail that came with the boat. It is in far better condition so we will leave it like it is for now. In the light winds it yielded some welcome extra push... To me it looks like some mast pre-bend induced with the uppers is necessary to avoid an excessively “deep” sail shape.

The smaller kite together with the big kite sock and the thin halyard worked really well.

Unfortunately the daggerboard did not fit the case properly anymore, so the vang just cleared its upper front edge when fully releasedL. After many hours of sanding down both daggerboard and case it is still an issue… The case ( or actually the insert) looks like they used some kind of paper based material back in 1990...




Edited by skslr - 01 Jun 21 at 6:59am
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