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Fiberglass repair.

  1. #1
    Member Johnpewpew's Avatar
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    Fiberglass repair.


    So my first time at the track was a blast but I did have an off or 2 or 4. So needless to say I would like to repair the fairing. Any advise would be appreciated.
    What's a good brand to use?
    Good techniques?
    Good tools to have?
    I got a pritty big hole i got to fill. And some cracks.

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  2. #2
    Lifer loudbeard's Avatar
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    Re: Fiberglass repair.

    This is for an EX right?
    Fiberglass repair.-ducttape-jpg

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  3. #3
    TRACK RAT!!!!! Pigman's Avatar
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    Re: Fiberglass repair.

    Just get the bondo fiberglass kit and some filler...... mat glass on the back and fill. Its just going to get some more pavement surfing anyways....

    Don't make it too good LOLOL

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  4. #4
    Bizarro Zoolander Petorius's Avatar
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    Re: Fiberglass repair.

    For big holes, I have had good luck covering the hole with painters tape on the outside surface to give it some shape/backing, then glassing the inside. Always used the bondo stuff.

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  5. #5
    Lifer isaac_'s Avatar
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    Re: Fiberglass repair.

    Aluminum tape to give it shape on the outside. Glass the inside with the mat. Fill chips with bondo.


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    Dictionary quoting knob stoinkythepig's Avatar
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    Re: Fiberglass repair.

    If you hate fumes and want stuff that's ridiculously easy to mix, get some West Systems epoxy resin (105) and hardener (205) and the pump kit, rather than polyester resin (bondo and others) It's not cheap, but you may find lots of other uses for it. I love the stuff for boat projects. Almost no odor.

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    Re: Fiberglass repair.

    Quote Originally Posted by stoinkythepig View Post
    If you hate fumes and want stuff that's ridiculously easy to mix, get some West Systems epoxy resin (105) and hardener (205) and the pump kit, rather than polyester resin (bondo and others) It's not cheap, but you may find lots of other uses for it. I love the stuff for boat projects. Almost no odor.
    I like the West Systems too better than the Bondo fiberglass, and if you put it out in the sun it will cure very quick. Make sure you sand the inside well to so it can bond into the original fiberglass well.

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  8. #8
    Lifer jasnmar's Avatar
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    Re: Fiberglass repair.

    Street bodywork or track bodywork? They are completely different.

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  9. #9
    Member Johnpewpew's Avatar
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    Re: Fiberglass repair.

    Quote Originally Posted by jasnmar View Post
    Street bodywork or track bodywork? They are completely different.
    It's track bodywork

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  10. #10
    Burns retinas nhbubba's Avatar
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    Re: Fiberglass repair.

    West is waaaaay too expensive and nice for track bodywork. We're talking about racers here; no brain cells left for the fumes to kill. Apply in an enclosed, poorly ventilated place. You'll be fine. Just look at me!

    I normally got whatever autozone sells. Their repair kits were usually good for me for one LRRS round or so worth of repairs. I always seemed to run out of hardner first. I've since learned you can buy the supplies alacarte, likely for much less.

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  11. #11
    Lifer Imbeek's Avatar
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    Re: Fiberglass repair.

    Bub's joking I know, and I'm pretty haphazard when it comes to safety regulations and practices, but when it comes to fiberglass...either the resin fumes or sanding dust, I don the big boy filter mask...not the little cloth thing with rubber bands, but the one with replaceable filters and a seal against your face where that stuff isn't gettin in, period. The surf world has lots of stories about those fumes and the dust; not something I want in my lungs and easy to prevent.

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  12. #12
    Senior Member smokinjoe's Avatar
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    Re: Fiberglass repair.

    Man you shoulda just done it at the track. I had fiberglass in my tramper. I fixed mine in the garage last time it needed it. Watch some utube vids on fiberglassing or just buy the big bondo fiberglass kit, some sandpaper and spraypaint and do it at the garage.

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  13. #13
    Awesomeness, Inc. MattR302's Avatar
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    Re: Fiberglass repair.

    So I’ve got a set of track fairings that have maybe 5 areas that are a little cracked or rashed and need a little beefing up. Never played with fiberglass before. Is this the Bondo kit mentioned above? https://www.homedepot.com/p/3M-Bondo...0420/205798047

    Is this kit enough to do a handful of repairs on one set of fairings? I read a couple of reviews that said the cloth included was pretty crappy - Should I buy that separately instead? What’s better, fiberglass cloth or fiberglass mat?

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  14. #14
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    Re: Fiberglass repair.

    For rash, you can get away with any type of filler, don't necessarily need fiberglass. Just find something with flexible properties.

    For cracks, I would say cloth tends to better. Mat is more for strength in curves, large areas, and building forms.

    A good set-up is fiberglass cloth, chopped up, and then mixed in with the resin and layered on.

    Not sure how big the cracks are or the area of repair is so can't really say how much you may need. Also, being your first time, you may use too much or too little hardener, which could affect how much you need if you do not work efficiently, or if it does not harden.

    It really is an art and learned technique, the auto body guys would be the best to answer and give advice.

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    Last edited by PeaPod; 04-12-20 at 09:10 PM.

  15. #15
    Member martia's Avatar
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    Re: Fiberglass repair.


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  16. #16
    Burns retinas nhbubba's Avatar
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    Re: Fiberglass repair.

    That kit will do. But it won't include a lot of supplies. You may be better served buying the bits individually; a can of resin, tube of hardner and a roll or sheet of cloth.
    You want cloth. No need for mat. Double up if you have to (you shouldn't).

    Also buy a box of gloves and maybe a mask. Probably easier said than done right now.

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  17. #17

    Re: Fiberglass repair.

    If had to pick 1 thing I don’t miss from racing...

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  18. #18
    Awesomeness, Inc. MattR302's Avatar
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    Re: Fiberglass repair.

    Quote Originally Posted by martia View Post
    I saw that stuff as well. Looks like it’s basically the resin with chopped fibers mixed in, looks like it’s primarily used for filling holes and cracks. I’m thinking I might just be able to use that stuff as-is for the cracks, then thin it out with a little acetone and apply it along with a layer of fiberglass cloth for areas that need reinforcement. Think that will work ok?

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