recommendations for carbon fiber repair kits for repairing a carbon fober enclosure

hey all just wondering if anyone has any recommendations on the best way or or recommendations on kits for repairing damage to carbon fiber battery enclosure .

My buddy came off his board the other night on a really steeep going up and his board rolled down bout 100 yards of one the steepest hills in SF & he had current smart reverse W/ brakes setting on…i said before we went up… you sure? he said ya. I said remember if you come off don’t break cuz that will just accelerate the board back towards you So if you go down break for a second then slowly ease the throttle forward…he made it up the supro steep block but the slightly less steep next block had couple significant cracks in the concrete ( in SF once a hill gets to a certain grade they pour the street out of concrete instead of asphalt and they’re not anywhere near as nice as most the worst asphalt streets) and he’s a damn good rider but still hasn’t mastered “the jump” off the deck or what I usually do is lift front foot and set it down immediately after traversing whatever bump, crack, pothole needs to be floated over & he came off & his board went down about about 40 yards of damn steep hill then he got his brain back right about the time the board was flying off the flat and the part of the intersection in between the two steep hills before he could think about trying to slow the board down… he didn’t quite get to the break then throttle I think until the board had launched off the edge of the flat intersection road And so I think he had floored by the time the board hit the ground again… I’m attaching a picture of the tire tracks left by his rear tires just having no chance of getting a grip and just peeling the frick out until slammed into / got wedged under a parked car. luckily no damage to the parked car as it went underneath but ripped his back trucks off by shearing the bolts off connecting it to the deck and crunched the rear corner of his carbon fiber enclosure for the battery and it’s not too badly …
whole situation certainly could have been much worse.

he ended up with a dis located shoulder despite having every kind of pad know to man on…I guess that’s one injury that pads can’t really help with… he threw his right arm out to catch himself And that dislocated his shoulder I’ve been trying to teach him if you got shoulder pads on which he did have full motocross shoulder chest and spine protector vest / upper body pads on… Which the one time I go down every year or so always save my ass by just throwing my forward/right arm cross my chest and shoulder rolling into the pavement… So after action report we learned going up super steep concrete hills is not anywhere near enough fun for the risk… other crazy thing was he felt we were right close to SF general and an ambulance pulled up half a block in front of them 5 seconds after he fell They were just pulling up that hill to take their break and eat their sandwiches at about 1:30 in the morning and so they were right there… Even other crazier thing is they offered him painkillers he said I don’t want any opiates and they said Oh they just started giving us ketamine and after about 10 minutes of him saying no I don’t need it (We are no strangers to ketamine and recreationally…)

I think they hit him with 300 mg in the ambulance by the time I got a couple bolts from my front trucks installed to re attache his rear trucks and got an Uber home and got to the hospital They had hit him with more ketamine so much that he didn’t even remember them popping his shoulder back in and the first thing he said to me when I walked in was… Do these drugs I’m on drugs right? Wait everything’s okay right? I said yes fuck I’m bummed I miss them popping your arm back in he said they did what… Are we in Wisconsin? anybody who has ever done ketamine recreationally knows how freaking psychedelic that shit can be a man they hit him with so much he didn’t even know where the fuck he was but apparently this is a brand new thing that has been approved for pain control in both the ambulances and hospitals… The paramedics were so fucking cool and they were so excited to use the ketamine… They were like they just gave us the stuff last week It’s great cuz we don’t have to give people fentanyl any more unless people really really want it and this stuff works great… It was like 1:30 a.m. on Monday night well I guess Tuesday morning Anyway no purpose damage to his shoulder and he’s doing great…
but I want to do him a favor and get his board all buttoned up and back together and repair the damage to the carbon fiber enclosure for him and just wondered If anyone has any advice Thank you so much in advance much love to this forum!

Q

Just get some carbon and epoxy no kit necessary and don’t know what would be in it … other then possibly some peel-ply, some cups, a scale, and a stick to mix

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sweet so some carbon pieces like this and 2 part epoxy like this right?..essentially the stuff in this kit but i got my own cups n stuff to mix the epoxy & apply to carbon etc…

makes sense



much appreciated
Q

Get fabric not loose carbon and make sure it’s laminating epoxy. Clean what ur going to cover. Mix resin. Get the fabric wet with epoxy. Apply it and then try to sop up as much excess resin as u can with peel-ply

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The chopped stuff isn’t necessarily bad, but it’s best used on weird shapes because you can paint it on like paper mache. It probably won’t wrap around a sharp corner, though. If the problem area is mostly flat surfaces with corners, go for the fabric version.

Epoxies made for table finishing might be too thick to adequately soak into fabric, so take the advice to look for laminating epoxy. I would also add that you should paint the repair area with epoxy before applying wetted fabric, makes it easier to get a solid bond.

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Yes, I agree with this.

In addition, make that as thin as possible. You just want to “wet” the area so other stuff sticks to it better.

This advice so far is all for “structural” composite. If you want a “filler” solution that doesn’t need to be [as] strong, but to fill holes then you can use straight epoxy mixed with fumed silica. Or, a combination of both would be epoxy mixed with milled glass fiber and fumed silica. It’s clumpy, strong, and will stay where you put it. The problem with using milled glass fiber is that it’s not flat at all and needs TONS of sanding and a gel coat. A “gel coat” means you just clean (with water only) the cured surface and then rewet the (now dry) surface again with a really thin coat of epoxy. This just makes it smooth and glossy.

Whatever you do, play with it and make stuff (and let it cure) first, apart from the skate, so you can understand how it works. Then when you put it on the skate you know what it’s going to do.

And remember the golden rule when working with composites: there are no mistakes, only more sanding. You can sand anything off and rework it. The idea is to sand as little as possible.

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THANK YOU! :pray:t3::pray:t3::pray:t3:

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