Contact   Imprint   Advertising   Guidelines

How does this sound?

here you can exchange your experience and datas about your home build boards


SCOUNDREL8
Rare Poster
Posts: 12
Joined: Fri Feb 25, 2011 12:22 am
Kiting since: 2008
Local Beach: Leo, Zuma, occasionally belmont
Brand Affiliation: None

How does this sound?

Postby SCOUNDREL8 » Thu Mar 08, 2012 12:59 am

Okay, I've finished my rocker table, the surface is 1/4" mdf, just put the final touches on my vacuum pump, works like a charm, cut out my template and now, I'm ready to build my light wind machine, 146x46 My thoughts were as follows;

1/4" dyvinacel core with the perimeter routed out and poured PU rails or epoxy with micro balloons poured as rails,

An added 1/4 deck that tapers to the edges for added firmness with 4 oz glass sandwiched between

A layer of 6 oz e glass ( is s glass that much better for my first board) followed by 2 - 4 oz layers on either side of the core.

All this layed up on a sheet of Mylar and vacuum bagged.

Not sure about the top sheet, might try to find some cotton print for the first board. Also probably going to use a tint for the bottom, so it'll just be a solid yellow or orange.

With this be okay?. To think, to thin?. Any thoughts.

Thanks,

I'll post pics as things progress.

gbleck
Very Frequent Poster
Posts: 546
Joined: Mon Oct 08, 2007 4:39 am

Re: How does this sound?

Postby gbleck » Thu Mar 08, 2012 7:48 pm

The 1/4 inch divinycell needs more then 6 oz of glass or it can snap. I'm repairing one right now in 135 x 40. Other then that sounds good. Wax up the masonite and it works good. Not quite as smooth as plexiglass but it works.

BWD
Very Frequent Poster
Posts: 2777
Joined: Thu Jun 05, 2003 3:37 am

Re: How does this sound?

Postby BWD » Thu Mar 08, 2012 9:34 pm

3 x 6oz e glass both sides plus 6oz patches under feet on deck and you are good i think.
Show pics!

SCOUNDREL8
Rare Poster
Posts: 12
Joined: Fri Feb 25, 2011 12:22 am
Kiting since: 2008
Local Beach: Leo, Zuma, occasionally belmont
Brand Affiliation: None

Re: How does this sound?

Postby SCOUNDREL8 » Thu Mar 08, 2012 10:17 pm

Thanks for the reply. Is there a huge benefit to S glass??? So much more money. And wax the masonite with what?? I'll take some pics this weekend and post

User avatar
foam-n-fibre
Frequent Poster
Posts: 346
Joined: Tue Jan 02, 2007 11:50 pm
Kiting since: 2000
Gear: DIY boards and OR kites
Brand Affiliation: None
Location: Ottawa, Canada

Re: How does this sound?

Postby foam-n-fibre » Fri Mar 09, 2012 3:31 am

Am I right in understanding that the core will effectively be 1/2" in the middle tapering to 1/4" at the edges? If you want to save some weight and cost skip the layer of glass between the two layers of foam. That layer is at the lower stress "neutral axis" area, and will do very little for you.

A good rule of thumb for basic E glass is 3 layers of 6 oz each side no a half inch core. If the board is wide and you're not huge you could get away with a bit less glass. Now, if you go S-glass sounds like your layup is about right using the 4's. If this is your first board, I'd suggest 3 layers of 6oz E, and drop more cash as you learn a bit more.

Your original plan had 32 oz total of S-glass, includuing the middle layer. You'll be at 36 oz with 3 layers of 6 oz E each side, so not a huge weight difference. Unless you plan to really stress it, go with 2 6's and a 4 each side of E. Or, if you can find it (like if you're in Canada getting stuff from Composites Canada) get the 7oz style 7715 E glass, which has 90% of is strength in the long axis and replaces 2 layers of 6 oz for a better price than S-glass.
http://www.compositescanada.com/product ... roduct=613 (note that the description on that page seems to be wrong, the same as anothe type of cloth, but the pdf link on that page has the right info.)

HTH,
Peter

SCOUNDREL8
Rare Poster
Posts: 12
Joined: Fri Feb 25, 2011 12:22 am
Kiting since: 2008
Local Beach: Leo, Zuma, occasionally belmont
Brand Affiliation: None

Re: How does this sound?

Postby SCOUNDREL8 » Fri Mar 09, 2012 4:41 am

Thank you so much for the info. I'll post picks this week end.

SCOUNDREL8
Rare Poster
Posts: 12
Joined: Fri Feb 25, 2011 12:22 am
Kiting since: 2008
Local Beach: Leo, Zuma, occasionally belmont
Brand Affiliation: None

Re: How does this sound?

Postby SCOUNDREL8 » Fri Apr 27, 2012 4:40 pm

Well, I clearly haven't posted pictures yet. Got suddenly very busy at work. Hoping to make the first board next week. I'll put up pics as soon as I have something.

D


Return to “Board Builders”

Who is online

Users browsing this forum: skriever and 1 guest