Best adhesive?

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  • Big T
    Forum LongTimer
    Past Site Supporter
    Super Site Supporter
    • Mar 2005
    • 12392
    • West Slope, OR

    #1

    Best adhesive?

    Anyone glued the plastic headlight bucket?

    I have one with a crack that I'd like to fix

    What's a good adhesive for this plastic?
    1978 GS 1000 (since new)
    1979 GS 1000 (The Fridge, superbike replica project)
    1978 GS 1000 (parts)
    1981 GS 850 (anyone want a project?)
    1981 GPZ 550 (backroad screamer)
    1970 450 Mk IIID (THUMP!)
    2007 DRz 400S
    1999 ATK 490ES
    1994 DR 350SES
  • jpaul
    Forum Sage
    Charter Member
    • May 2002
    • 2522
    • Cleveland OH

    #2
    My preference for this type of repair is an epoxy. Cut a piece of screen to bridge the area around the crack. Drill a small hole at the end(s) of the crack. Lay down a layer of adhesive, then work some into the screen. Place the screen over the area, and put some more adhesive over top of it.
    JP
    1982 GS1100EZ (awaiting resurrection)
    1992 Concours
    2001 GS500 (Dad's old bike)
    2007 FJR

    Comment

    • Eli69
      Forum Sage
      Past Site Supporter
      • Aug 2005
      • 4854
      • Wyoming County, New York

      #3
      i used devcon to repair a side cover that fell off and got run over. it's still holding up fine after about a year. devcon is a two part adhesive that mixes in the applicator's tip while you squeeze it out. i've also used it to repair gas tank holes. and broken coffee cups handles. lotsa other stuff too.
      2002 bmw r1150gs 1978 gs1000E skunk les pew 1982 GS1100
      1980 gs1000G the ugly RLAM

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      • Suzuki_Don

        #4
        The other option is to plastic weld it. You can do it yourself with a decent size soldering iron.

        Comment

        • Billy Ricks

          #5
          There are some good two part epoxies specifically for plastic.

          Comment

          • 1978GS1000custom

            #6
            i have used jb-weld for plastic in the past and had outstanding results on side covers and fairings and even a busa front fender. heres a link to the stuff http://www.hobbylinc.com/htm/jbw/jbw...source=froogle if you dont want to ruin the plastic surface, mask off the bucket as close to the crack as possible. this stuff is thin so it coats quick (kinda like a 2 part super glue) and sets fast also. hope this helps, cliff

            Comment

            • Bribird

              #7
              At the auto parts store they sell this stuff that comes in an epoxy type 2 part syringe. I think its called plastic weld. It is not clear like most epoxies, it is dull yellow in one tube and white in the other, and smells pretty bad. I have used it for many a plastic repair. when dry it can be sanded, primed and painted, you just have to treat it just like plastic.

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              • jpaul
                Forum Sage
                Charter Member
                • May 2002
                • 2522
                • Cleveland OH

                #8
                FYI, the Devcon, JB-Weld, and the plastic weld are all epoxies. If you find one with a static mixer (the tip that mixes the two parts), try to get one that has more than one nozzle, since those are only good for one use.
                JP
                1982 GS1100EZ (awaiting resurrection)
                1992 Concours
                2001 GS500 (Dad's old bike)
                2007 FJR

                Comment

                • Zooks

                  #9
                  'Araldite' is the most common one in Aus. As mentioned though, there are dozens of 2 part epoxies and they are all pretty good.

                  Comment

                  • spyug

                    #10
                    If you know for certain that the plastic is "ABS" then you can use the yellow glue you get in the plumbing supply section i.e. the stuff used for joing plastic pipe.

                    The two part epoxies as mentioned are also good and in a pinch you can use the two part epoxy putty you also buy in the plumbing section. Same stuff that Billy Mays hawks on TV. this stuff also has the advantage of bveing able to be built up and can be sanded and shaped.Even Bondo works.

                    In all cases, you should prep the pieces to be joined by sandind or filing to give some "tooth" for the glue to grab.

                    In areas that may flex or that needs extra rigidity, a backing as jpaul says is an excellent idea.

                    Any of the methods and products mentioned should work.

                    Cheers,
                    Spyug

                    Comment

                    • Barneycanoe

                      #11
                      The instant "Crazy glues" that use cyanoacrilite also work, I repaired my CB650 headlight plastic crack with this. Crack has to be clean and perfectly mating, though.

                      Comment

                      • Guest

                        #12
                        Plastex is the product you need.... expensive but worth it.... http://www.plastex.ca/

                        Comment

                        • gustovh
                          Forum Sage
                          Past Site Supporter
                          • Oct 2006
                          • 4994
                          • Vernonia

                          #13
                          The bucket should be ABS plastic, the same stuff used in black plumbing pipe. The ABS glue seems to work just fine for repairs and can be used to fill some small cracks on occasion. Use the glue on both pieces, press firmly for about 5 min. let set 24 hours and file/sand to finish.
                          I do it all the time.
                          V
                          Gustov
                          80 GS 1100 LT, 83 1100 G "Scruffy"
                          81 GS 1000 G
                          79 GS 850 G
                          81 GS 850 L
                          83 GS 550 ES, 85 GS 550 ES
                          80 GS 550 L
                          86 450 Rebel, 70CL 70, Yamaha TTR125
                          2002 Honda 919
                          2004 Ural Gear up

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                          • Big T
                            Forum LongTimer
                            Past Site Supporter
                            Super Site Supporter
                            • Mar 2005
                            • 12392
                            • West Slope, OR

                            #14
                            I superglued it yesterday and it came out pretty good. The litlle parts didn't end up exactly
                            straight, so I'll sand those down on the outside and do an epoxy reinforcement on the inside.

                            It's a spare unit, altho I'll probably need it to get my project bike titled.
                            1978 GS 1000 (since new)
                            1979 GS 1000 (The Fridge, superbike replica project)
                            1978 GS 1000 (parts)
                            1981 GS 850 (anyone want a project?)
                            1981 GPZ 550 (backroad screamer)
                            1970 450 Mk IIID (THUMP!)
                            2007 DRz 400S
                            1999 ATK 490ES
                            1994 DR 350SES

                            Comment

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