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post #1 of 8 (permalink) Old 10-10-2005, 07:24 AM Thread Starter
 
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fixing plastics

well i bought a another bike a few days ago. We didnt have a ramp to load it into the back of the truck. So we used a metal door. Well everything was great until i hit the top of the "ramp" and the chin fairing caught the door and shattered. Basically the very bottom is split right down the middle. It cant be seen unless your under the bike so i dont really care that much.what i DO care about is that it might rattle at speed. I was wondering if you can use that purple PVC melting stuff to melt the plastic back together. I realy dont want to resort to drilling hold and zip tying it together. any other ideas for how to fix plastic?
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post #2 of 8 (permalink) Old 10-10-2005, 07:29 AM
 
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crazy glue, no?
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post #3 of 8 (permalink) Old 10-10-2005, 07:37 AM
 
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Soldering iron. Seriously, take the fairing off, put it together and make a few melts parpendicular to the crack from the inside, every inch or so. then fill in the line.
If you can get ahold of a plastic welder (which is a hot air gun that feeds tubes of plastic, like a tig welder) its even easier.
Plastic welds will not have the strength of the original piece, but it will look nice, and will be stronger than crazy glue.



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post #4 of 8 (permalink) Old 10-10-2005, 07:49 AM
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Quote:
Originally posted by Vash
Soldering iron. Seriously, take the fairing off, put it together and make a few melts parpendicular to the crack from the inside, every inch or so. then fill in the line.
If you can get ahold of a plastic welder (which is a hot air gun that feeds tubes of plastic, like a tig welder) its even easier.
Plastic welds will not have the strength of the original piece, but it will look nice, and will be stronger than crazy glue.
He sums this up very well...I used a similar procedure on my GXR-750 a few years back.


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post #5 of 8 (permalink) Old 10-10-2005, 08:09 AM
 
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You could also use tape and Bondo. You get the mesh tape used for taping sheetrock. You put that on the backside and apply the bondo. Use the bondo they have for bumpers that way it will have some flex. Make sure you sand really well where the peices will come together. Make sure there are no jagged edges. After it is dry, sand away. Oh this would also require paint so I dont know if you would want to go that far, but it works.
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post #6 of 8 (permalink) Old 10-10-2005, 12:47 PM
 
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Vash is right on

I completely agree with what Vash wrote. However i had a similiar situation in which the plastic was too thin to use a soldering iron on. I simply went to the local hardware store and bought some plastic epoxy. I then carefully glued the pieces back together. I then painted the piece and never had a problem with it again.
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post #7 of 8 (permalink) Old 10-11-2005, 04:31 AM
 
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Thin plastics could be a pain. The trussels around the mounting tabs are almost impossible to fix. Also some plastics are easier to work with than others. I believe the fairings are ABS, which welds together ok, but the headlight is either Nylon or PolyUrathane, which is virtually impossible to weld together



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post #8 of 8 (permalink) Old 10-11-2005, 10:54 PM
 
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Plastic welder is awesome, I pieced back my farings with it when I had my upper cowl shattered in 50 pieces from hitting a deer 2 months ago. I just added frame sliders on the bike and so I have to cut a hole for it then I'm up for some more bondo and repaint.
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