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| Re: Timber boats and Spis
[Re: Berthos]
#6185 04/11/02 05:23 AM 04/11/02 05:23 AM |
Joined: Jun 2001 Posts: 1,449 phill 
veteran
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veteran
Joined: Jun 2001
Posts: 1,449 | Bethos,
I'm currently building a new set of timber hulls.
I have added a kevlar patch where the hole will be drilled and also further distributed the load with a layer of 3oz glass and the inside of each ply panel. The glass goes back around 300mm and almost to the keel. (Kind of, to complex to explain exactly what I did here.)
When I drill the hole I will drill it oversize and wrap a bolt the right size with several layers of glass.
With a washer either end I will tighten the nut conpressing the glass forming a glass sleave in the hole.
Prior to this the part of the hull on the inside that will have the hole drilled will be filled with glue mix so I drill through 4mm ply, 6oz kevlar, 3oz glass, glue, 3oz glass, 6oz kevlar 4mmply.
To complicate the explanation even further you must remember the glass that goes on the outside of the bow (so far not mentioned) will be also drilled as it will come back far enough.
Now if it was a timber hull already built I would just drill the hole oversize do the glass sleave thing and see how it goes. I think it will hold up OK.
In my case I have the opportunity to reinforce the new hulls, So why not?
This is just the way I tackled the problem.
Regards,
Phill
I know that the voices in my head aint real, but they have some pretty good ideas. There is no such thing as a quick fix and I've never had free lunch!
| | | If needs be than you can also lead the spi bridles
[Re: Berthos]
#6187 04/11/02 10:43 AM 04/11/02 10:43 AM |
Joined: Jun 2001 Posts: 9,582 North-West Europe Wouter
Carpal Tunnel
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Carpal Tunnel
Joined: Jun 2001
Posts: 9,582 North-West Europe |
If needs be than you can also lead the spi bridles to the bridle chainplates. This setup is often used on boats that can't have little holes in the bows.
BTW; I know that Kirt just drilled the holes and filled them afterwards in his glass T4.9 nr 159. I looked at it and it looked pretty dependable to me.
I've seen much the same thing on some tornado's here in the Netherlands.
In short, you might want to do with attention to detail BUT it seems that it can be done safely. Otherwise you have the option to run the lines to your bridle chainplates.
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
| | | Re: Timber boats and Spis
[Re: Berthos]
#6188 11/29/06 05:24 AM 11/29/06 05:24 AM |
Joined: Sep 2006 Posts: 393 Camden NSW wildtoy
enthusiast
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enthusiast
Joined: Sep 2006
Posts: 393 Camden NSW | Hi there Berthos, Ive got a mosquito which Im putting a kite on and Im building a new mossie to take a kite as well. After drilling the hole and placing my bridle rope through Im filling the hole back up with resin to sell it from the weather. But Ive noticed alot of mossie sailors who have kites dont bother with that. | | | Re: Timber boats and Spis
[Re: wildtoy]
#6189 12/04/06 04:27 AM 12/04/06 04:27 AM | Anonymous
Unregistered
| Anonymous
Unregistered | Hi all,
have seen a number of ply Mossies with holes drilled in bows, all seem to have been OK. The ways I have seen used on existing boats to fill hole are, turning boat on end or upside down and filling with resin fibre mix and redrilling. Or gluing a small alloy tube in, then using a large washer on the outside of the hull to distribute load.
Regards Gary. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" /> | | |
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