Well, I'm wussing out. I took it to Island Longboards this week. Apparently his jobs are pretty good. They say he's "not a people person" (too much fumes or something) so I haven't been able to speak with him directly. From what i can determine, he'll fill the damaged pvc foam with epoxy filler, glass over and airbrush new paint.
I really appreciate for the offers of help. Thanks guys. Perhaps when I encounter a more structural repair.
I sanded off some of the paint to see what I would find underneath and have posted some pictures.
Also I sent off some questions to "The Board Lady". Here is our conversation in the hopes that it might help someone else down the road.
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Saul: now there's a no-brainer! you'd need a teaspoon of this and a pinch of that, but would have to purchase a quart of this and a pound of that - at great expense. Not to speak of annoying your wife with the mess and the neighbors with the smells.... nonono, if there is someone who can competently do this repair for you, then by all means, go for it!!
Your prep work looks fine! Those dark lines signal oxidation - the cracks indubitably from the impact, the dark from exposure to air, or more likely, water. How long ago did this wipe-out happen?
And - sure - if you think someone could benefit from our conversation, do share it if you want!
Onwards!
Eva
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On Tue, Nov 4, 2008 at 5:04 PM, Saul Spearing <sauls2000> wrote:
I feel a little like I'm copping out here. I've just found a boardmaker close to me who has repaired epoxy Starboards and has some fairly happy customers. Structurally, I don't think he'll do much more than fill, glass and airbrush. However, I figure that by the time that I buy the epoxy, fiberglass and the LP paint I will have covered the cost of him doing the repair. (let alone getting ahold of an airbrush, thinners etc.).
I've attached a couple of pictures of the result of my sanding. (I ended up scraping away too much pvc foam). Your tip with the quarter worked well and exposed areas that I didn't realize had surface damage. I seem to be sanding into the Kevlar layer at the front where the fibers are starting to pull up instead of sand away.
What do you think the dark lines are under the glass at the nose? The outer glass seems to be in good shape still at that location.
I really appreciate your time in answering my questions and I was wondering if I might post our conversation to a thread that I have started on our local windsurfing web site (bigwavedave.ca)?
Best Regards
Saul Spearing
--- On Sun, 11/2/08, Eva Hollmann <boardlady> wrote:
From: Eva Hollmann <boardlady>
Subject: Re: Board repairs on Starboard technora.
To:
Date: Sunday, November 2, 2008, 11:34 AM
Technora is a resilient fiber similar to Kevlar - tough in abrasion. As far as I know, you have it only in select high-impact areas, and certainly only on the outside face of the sheet foam.
Notwithstanding my mantra about "rebuild with like materials", I think you can safely use fibeglass instead, since I believe the benefits of the Technora to be highly overrated, and since it is not used consistently in your board to start with.
Since the crack leaks along its entire length (as shown by your bubble test), you do know that every structural layer is cracked - the Divinycell, as well as the inner glass. However, you may not need to replace either, if you find the Divinycell firmly bonded: tap it with a quarter and listen for resonance - if you get a "ping", you are good. If it is a "thud", however, the Divinny has delam'd from the inner glass and you need to address that before putting on a new outer skin. In a mast slam such as this, I really like to injext Marine Urethane, because that will find all the little fissures that may have been created when your mast depressed the sandwich and some of its layers deflected more readily than others.
If this sort of injury had occurred along the rails in the middle third of the board, you would most certainly have had to dig down to expose the inner fiberglass and rebuild that first. However, there are no high bending loads near the nose (except when you catapult), so you can safely compensate for a likely crack in the inner glass by adding an extra layer on the outside.
Your crack line is very typical for a hard mast slam that can smash the point of first impact down far enough for there to be contact much further aft on the deck. The nose will deflect overall, plus the sandwich compress temporarily, which all may well add up to 1/2" or more overall.
As far as saving decals - I would not make any overlaps smaller than about 1/2". If that demolishes a decal, than that is vastly better than your repair cracking and leaking down the road.
Send me photos once you have exposed the Divinny!
Eva
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On Sat, Nov 1, 2008 at 12:20 PM, Saul Spearing <sauls2000> wrote:
Hi Eva, I sent the pictures just last Tuesday of the Starboard Futura with the nose damage. Thanks so much for your reply. I think I have poked through every page on your site now and have learned so much. I have some more questions and I'm hoping you could spare a moment to pass along some more of your wisdom.
What is Technora?
Is the Technora used on the inside or the outside of the PVC foam?
On the Starboard web site, their board drawings seem to indicate that the Technora is only used in certain places (nose, foot areas). Do you know if that is the case?
Adhearing to Boadlady 1st principles of replacing like with like materials, what should Technora be replaced with?
Once the outer layer of fiberglass is sanded off of the dent, is there a way to tell if the layers of fiberglass below the PVC foam will require replacement? I don't want to excavate that far if I don't have to.
How narrow can a repair be (On my board, I'm thinking about the line from the dent to the decal?
When a dent is not very deep (say 1/32" or so) without any puncture, what layers are typically being damaged? (I.e. What layers have to reach yield point?) Is it typically limited to the outer fiberglass and the PVC foam layer?
I am having trouble understanding the "crack/line" of damage that goes from the dent back to the decal? This cracked area would have been subject to less stress than the depressed area so I can't see why it would crack. Have you seen this type of damage before? What are the chances it's just the outer paint?
Thank you so much for your advice and help..
Saul Spearing
Nanaimo, BC
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--- On Tue, 10/28/08, eva <boardlady> wrote:
From: eva <boardlady>
Subject: Re: Board repairs on Starboard technora.
To: "Saul Spearing" <sauls2000>
Date: Tuesday, October 28, 2008, 12:53 AM
the proof is in the pudding - uh, the bubble-test! no need really for artificial pressurizing (though I use a bilge pump at the shop, see
www.boardlady.com/leakdetection.htm)
Your board has a 1/8" sheet of Divinycell between Technora and EPS core, whichsame Divinycell is fairly ductile and thereby able to absorb a fair amount of impact energy before cracking and leaking. From the looks of your ding (good pictures!!) I would suspect enough of a deflection at the forwardmost point to possibly have caused a leak. Do get out the detergent to make sure!
As far as restoring the non-skid - no short-cuts I know of, just honest sanding and fairing and repainting and recoating with DeckDust (available from Fiberglass Hawaii and others). Its hard to get it right (though I just came really close, after 5749 repairs...... go check out "for my customers" => Job #5749
Good luck!
Eva
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----- Original Message -----
From: Saul Spearing
To:
Sent: Monday, October 27, 2008 9:12 PM
Subject: Board repairs on Starboard technora.
Hi Eva, thank you for providing us all with such exceptional information on board repairs.
I'm hoping you might be able to help me out a little.
I have a 2008 starboard futura (tecnora) that I have dinged/damaged on the nose from catapulting. GRRRR.
Some people have looked at it and said that it looks cosmetic. Never having cut into one of these I can't tell. I heard that one way to check for a compromised hull is to apply a little pressure to the vent plug and use soap solution on the suspect area. How much pressure and what kind of pump works well? Would a hand bike pump work?
The attached pictures were taken with lighting from the side and the ding is no deeper than 1/32 nd of an inch. As far as dings go, how deep before I should be excavating and rebuilding? Or is it more a question of area? Everything still feels pretty solid. No spongy areas.
Any tip or hints?
Any advice for getting the non-slip to look decent??
Thanks for your thoughts
Saul
Nanaimo, BC