Forums > Windsurfing Wave sailing

Adding a mast base screw hole to 9'Hokua SUP???

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Created by rustle > 9 months ago, 28 Mar 2012
rustle
QLD, 279 posts
29 Mar 2012 1:40AM
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I was wondering if anyone has any advice on making a 9' Naish sup sailable for light wind wave sailing days. I see a lot of talk of 115l boards for light days and know that this sup surfs well, so thought it may be a good adaptation.I think its 125l and I am around 92kgs..

-How would I go about it as I am don't think I would do it myself ? Every time I try a repair with epoxy it just ends up tacky for ever.

-Does the base area need to be reinforced and how much?

-Is it a big job?

-Where could I find a base screw plug for inserting into board? I imagine a standard mast track nut would be too small?

-Where would the screw hole need to be placed exactly ? I have an 11'4 and it seems to be near the handle. -Is there any science to this?

-How do you think it would go with a sail on it. I don't expect to ever plane on it as there is heaps of rocker but should be uphaulable when not enough to waterstart. Gold Coast wind is a tease.

Any advice is much appreciated.

Mark _australia
WA, 23441 posts
29 Mar 2012 9:09PM
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Yes it will need to be reinforced - you will need to route a hole about 25cm x 10m and preferably all the way to the bottom laminate, set in a block of divinycell and then route it out for a mast track.

Have a google about finbox replacement, or boardlady.com may have a section.

If it has a soft EVA deck that will be an issue as you need to careflully cut/peel back a large section then glue it down afterwards.

No insult intended, but it is not a job for a first timer, you need to have repaired sandwich boards a lot before.

PS dunno how your epoxy always ends up not setting - polyester resin ("fibreglass resin" - what is used for surfboards) will do that with not enough catalyst, but epoxy is pretty hard to get wrong if you measure by weight, even on cheapo digital scales.
You need epoxy if the board is polystyrene core, polyester will melt it.

rustle
QLD, 279 posts
30 Mar 2012 7:47AM
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Thanks Mark
I am thinking it may be better to buy a something with it built in from factory.
I didn't realise the amount of reinforcing apparently necessary and I haven't worked with epoxy enough to try it.
Just need a floaty wave board for our Gold Coast wind to chug out.

northsail
NSW, 97 posts
30 Mar 2012 9:32PM
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'about 25cm x 10m' ???? Maybe 10mm!!

Stuthepirate
SA, 3591 posts
30 Mar 2012 11:16PM
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Mark _australia said...


You need epoxy if the board is polystyrene core, polyester will melt it.


Yep, found that out the hard way. Now boards's in Hoop's shop getting fixed by a non-idiot

Mark _australia
WA, 23441 posts
30 Mar 2012 10:01PM
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northsail said...

'about 25cm x 10m' ???? Maybe 10mm!!


Sorry I was thinking of the larger SUPs lol

25cm x 10cm

roberto
NSW, 190 posts
31 Mar 2012 8:10AM
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I Got Pikey(south coast nsw) to put a mast track in my 9'6" Hokua but only use it for the kids to learn on. Not game to use it for myself as they snap pretty easy.It only cost around $50 so better getting expert to do it.
I have a nude 120lt for me, it was no good for the kids to learn on due to the deck grip being to hard on their legs.Good for me though!

rustle
QLD, 279 posts
31 Mar 2012 8:26AM
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Yeah something like the Nude 120 or OES 115 Quad looks like the go. Just need the $. Have sailed my naish 11'4" on small days but it is long.Fun and better than nothing but I wouldn't take it out in anything bigger than 2'-3'.

aus301
QLD, 2039 posts
31 Mar 2012 9:56AM
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I'm not sure there is many people I would trust of get it right on the Goldy. Pikey sails and has some understanding of the force that might be applied by attaching a sail, most of the guys on the coast are familiar with surfing and SUP but not windsurfing, I'd guess they would make it a bit too light.

mybrosweeper
NSW, 1016 posts
1 Apr 2012 8:48PM
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Oi, I was thinking about doing the same thing to one of my SUP's,but after some good advice decided not to risk it.Bottom curve will be all wrong,rails will be wrong,and it will be way to wide.I went to a windsurfing instructor who sold me a second hand F2 Pheonix 195lt for $400.Its got me up and going and catching of waves(little steering ability) but better than the frustation that would come with a board that was made for a totally different purpose.
regards,
Ian

Mungo
10 posts
2 Apr 2012 9:38PM
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rustle said...

Every time I try a repair with epoxy it just ends up tacky for ever.


Sounds like your epoxy is past it's bbf date. Is the hardener a p*ss yellow colour or has it gone dark yellow/brown?

rustle
QLD, 279 posts
4 Apr 2012 12:46AM
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Hardener?

Haircut
QLD, 6491 posts
15 Apr 2012 11:27PM
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can't speak for all epoxy. all the stuff i've bought ( surf supplier at west burleigh and south tweed) over the years had watery clear hardener when new, that eventually turned dark yellow after a couple of years (contact with air?). I still have some from 2003 which has now turned dark yellow and it still sets the epoxy rock hard.

the stuff i've bought was 4 parts epoxy, 1 part hardener. Could you possibly be mixing your parts the same as for polyester resin? (sometimes as high as 20part resin, 1 part hardener?)

UV stable hardener might behave differently to the stuff i've bought

cheers



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"Adding a mast base screw hole to 9'Hokua SUP???" started by rustle