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Mark _australia said...

Talking about light carbon and d'cell thickness I am interested in 2 x 3mm d'cell with carbon tissue in between. Has anyone done that?

I have done a similar double layup before as follows:
15kg m3 EPS - 190gm carbon - 4mm H80 D'Cell - 190gm carbon - 0.6mm pine veneer (like what starboard uses).
I sold the board off after a season of use to a 120kg guy as his high winder. I spotted it 5 years or so later and it still never had a single dent on it.

My only issue with double D'cell is it increases the cost of a board so much. Sheets generally come in 2400 x 1200mm so if your making a wide board (e.g 59cm) you can need 3 sheets at $80-$120 each.

Yeah I am aware of that I meant with carbon tissue - about 20gm/m2 - couple of layers of that in between the two d'cell layers and reserve all that good heavy carbon and glass for the deck

Just thinkin out aloud...

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Mr. No-one said...

Doing some nice work there Mikey H.
See your never one to sit still, the boards just keep getting better and better. Are you still doing the "thing" under the heels?

Thanks GMan, your boards must be getting a bit long in the tooth now. Yep no changes to the heel "thing" as that peodo said to you once ....it's our special little secret

really liking the fins,

looking at some new fins,,,

never heard of bandits before, where did you get them from ??????

Windy the fins are from the US of A. I designed them and then got them cnc routed in the states(Oregon) for the quads I went a flatter less draggy profile, I've got 2 spare sets.
But your boards are twins
I've got some spare twins. (pm me)
A couple of years ago I designed some twin fins (see pic below) I got made up some super flexy tip ones for sails 5.3m and below and some stiffer tip ones with a bit better bottom end for sails above 5.3m and bigger guys, I have great feedback from guys who have tried the flexi tip ones

I like that semi-weed fin leading edge at the base. No need to change fins if it is weedy = versatile.

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Mark _australia said...

I like that semi-weed fin leading edge at the base. No need to change fins if it is weedy = versatile.

Agreed Mark, wouldn't have to worry about the cray pots either.
Sweet fin setup Mike, you da man!

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Mr. No-one said...

Mark _australia said...

I like that semi-weed fin leading edge at the base. No need to change fins if it is weedy = versatile.

Agreed Mark, wouldn't have to worry about the cray pots either.
Sweet fin setup Mike, you da man!

Well that removes two of my excuses - 1 for not planing, and 1 for catapaults respectively

I was using a *board Quad in WA and its fins slipped over cray lines without any trouble..

But normally I jump in and tie the excess line in a bundle, if it's a problem pot..

Step one can be a as many loops as you like.. Just pull in as much line as you want and tie off.. Problem solved.

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R1DER said...

I recently put the finishing touches on my new quad for this summer.






It will be replacing my last years board see below, so keep an eye on the buy and sell section as I will be listing a bargain soon.

Back to my original post, I took out my quad for the first time today....
WOO HOO Super stoked, heaps of drive and speed at the bottom of the turn and off the top I'm very happy, other quads I've tried felt a bit stiff off the top, so I put a little extra tail kick in this one and now it feels similar to my twin on the top turn, it just fitted into the pocket, hanging out for some more wind to play around with fin position now, had them all back in the boxes in stiff mode and it still felt pretty good.

Good result then..
What toe did you end up going for? Are the sidebiters symmetrical foil?
(I'm starting to sound like the crew on the Boards Forum)

I can't believe it took a month to get it on the water, what has been happening over there??

Also on those G10 fins, can you buy sheets of G10 in Australia? I had a look on google but didn't get far. CJW is going to cut me some fins on his CNC thingi but we need something to mill.

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mahi said...

Good result then..
What toe did you end up going for? Are the sidebiters symmetrical foil?
(I'm starting to sound like the crew on the Boards Forum)

Geez I had a look over at Boards forum and they sure are talking a lot of smack about fin angles.. Fins are so over rated, a girl I know even sailed a whole day with her fin in backwards..

@mahi despite what the boards forum crew say, I have my own ideas on toe in. I didn't toe the front fins in. As I sail in cross onshore conditions I wanted the fins to be parrallel and give me that extra bit of drive. I found with fins in this angle and a fast flat tail that the top turn then becomes stiffer and harder to turn. So I put a bit of tail kick to help with the top turn. If I was making a down the line board where I didn't want so much drive and wanted to maintain the looseness I would have toed the front fins in and left the tail flatter and faster, pulled the tail outline in and made other alterations to the vee and concaves.

@barn yeah I was being patient I could have taken it out earlier on not so good days but I wanted a few good epic days in a row, and wanted to compare it to my twin it is replacing... hint hint ... shameless plug for bargain board

www.seabreeze.com.au/Members/Classifieds/MyAdvert.aspx?id=b0_la


Not sure about sheets of G10 I had those made up in the states.
Yeah I used to like the boards forum for their technical discussions, but a few of them are so anal, fanatical and obsessive compulsive I think it's part of their nature and make up in some of those precision structured Euro countries or too much spare time on their hands. There are countless threads were the same people keep saying the same thing over and over and over and over and over again and again and again and again ZZZZzzzzz

You can buy G10 sheets here, look for electrical transformer people, circuit board stuff is the same but waaay thinner and they use 10mm and 15mm etc G10 in big big setups.

EG: http://www.oba-ic.com.au/oba_Laminates_Sheets.html


Of course you can make it with a sh!tload of squares of cloth, steel mould and resin and bung it all in a mechanic's bearing press (bottle jack in a frame) so it sets under 5 tonnes of weight
Just not the heat cure, but it would be a pretty damn good layup and a fun project

Fun project? Sorry Mark, there's nothing fun about laying up a schit load of glass ,pressing it all up and then having to grind it all in to a fin shape.
Don't be fooled, making fins is not fun.

Oh now you have done it, I wanted to see somebody spend 20hrs cutting squares of glass.

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Mark _australia said...

You can buy G10 sheets here, look for electrical transformer people, circuit board stuff is the same but waaay thinner and they use 10mm and 15mm etc G10 in big big setups.

EG: http://www.oba-ic.com.au/oba_Laminates_Sheets.html

Ahh I think I remember finding something like that, it was the sheet size that scared me off.. I'll have to do some digging to find a G10 off cut.

I've laid up glass for a few fins before and I'm not too excited about doing it again!

not quite my new quad- but my new thruster.

Special thanks to Mark-australia and Barns for their confidence in playing with board repairs and some valuable emails they have sent through to questions i had.

This has brought life to my 101l 2009 JP FSW proedition- now a very suitable low wind range wave board. I got this out for the first time this week and i am very happy with the turn ability on a wave and the pickup speed was not much affected- it is also very comfortable on the plane and during gybe (better than the single fin- so much actually falling in on a few gybes as turning quicker!)

I did make a couple of small stuff ups which i would not make on a redo. Purely due to first time working with carbon fibre and epoxy.

I have included a series of shots- which were step by step ish.....
I was surprised to little carbon fiber the JP actually has in it- my fin boxes will wreck any rocks it my come in contact with!

I got my measurements by doing a scaled break down of the new JP board and working out fin position. I then gave it a 2mm toe in on the fins. I have used an old freestyle fin as my central which worked well and the fins are off my twin fin- will get a good fin set as i now have confidence in the job. So current fins are 11cm outers and 14 cm central.

I have done a final paint job since last photos as matched colors as close as i could- but considering this board was almost a right off after a knee threw deck on about third use (yes expensive depreciation $3000 + to zero in just two months)- now that i have seen the carbon content i am not surprised!








couldn't resist putting in a photo from ginger poms bucks weekend- last seen dressed with big boobs in a shady country pub near sandy point.
p.s one of his challenges was to try a forward loop with the boobs on- he did try- new definition to face first airbag landing

Awesome man - nice to do an experiment and improve the board!

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Mark _australia said...

Awesome man - nice to do an experiment and improve the board!

thanks again mark for your confidence in doing this stuff- definately not looking backwards at future projects. Really enjoyed it too!