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  • Problems with CUSTOM PAINT JOB!

    Well,

    At the end of XS Southeast, I fueled up Godzilla to have a full tank...it rides/pulls better that way on the trailer....more tongue weight, loaded it up, and then got it home to Va. a few weeks ago. After unloading it from the trailer, I saw something irregular and took a closer look....and this is what I saw!





    I had done this paint job several years ago. Had aircraft paint stripped the tank first, then used that rust remover/etcher/converter primer, and then layed on the black base coat and then the green flake over coat using the large mesh stocking for the pattern, then sprayed just a couple of layers of clear with hardener. It had a fairly quick curing/hardening time and so only had a little while....~ hour or less to get the 2 coats on. But the clear apparently wasn't either thick enough or hard enough because a year or so later, I had attended a rally, had a tank bag, and a little fuel spilt around the cap, and it smudged the clear underneath where the tank bag was.

    And so apparently it also wasn't as well sealed around the cap/neck area either, and the jostling of the bike on the trailer allowed the fuel to seep out, could also have been filled to high and just the heat expansion caused it to leak out, either way it got out and then UNDER the clear and ran down the side of the tank/color and left what you can see in the photos!

    SO......now come my choices. I'm just not very good with the paint process. Having to use that respirator type mask, the dangerous fumes, as well as having to try to deal with the time sensitive clear that was a bit $$ (PPG brand IIRC) so I was concerned about how long it would take to try to spray many layers like I've seen documented on here before...wetsand, tack cloth, spray, dry/cure, etc.!!!

    My side covers still look great, so I still have them to hold the color, along with my fenders.....although they DO have a few chips in them....I could possilby just touch them up with a little touch up brush paint??

    But I'm now thinking about doing something else with the tank?
    I know the diamond plate/treadplate is sort of a trademark design for my bike, and so....I've recently been thinking about fashioning/welding a whole tank out of it!? The STEEL treadplate is so heavy, and can eventually rust! I can get aluminum plate, and now that I've re-learned and improved my ability to weld aluminum....that's got me intrigued. I won't have to worry about PAINTING it, just polishing it! I could make a COFFIN style so wouldn't have to worry about any fancy CURVES to try to bend/fashion with it, would still let me have the semi teardrop ala coffin shape, and I could put one of those fancy new racer or aircraft style gas caps on it!? This could also allow me to make it a little bigger for more capacity!

    I know.....welding a container to hold FLAMMABLE fuel is a big undertaking. Just wanted to throw this out there for additional comments, remarks, warnings, etc.!?

    T.C.
    T. C. Gresham
    81SH "Godzilla" . . .1179cc super-rat.
    79SF "The Teacher" . . .basket case!
    History shows again and again,
    How nature points out the folly of men!

  • #2
    BTDT..........


    Greg

    Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

    ― Albert Einstein

    80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

    The list changes.

    Comment


    • #3
      That damage

      is almost impossible to stop when gas/fumes are present and left over time. I discussed this with my painter in my recent restore on my MNS. I wanted to acquire a clear coat that would not allow this and basically was told it does not exist. Of course I am very aware of this now ... second time around .... and I do try to make sure that I wipe any spills immediately and when I fill that tank I make sure to not allow the fuel to splatter. Overfilling is also a problem because even the best cap and seal still allows fuel to seep when too full on these bikes... especially the specials. One other thing to keep in mind on any bare metal prep is to make sure you use a very good quality etching primer to start with. Failure to do this will result in chipping and failure in the long run. In your case you definitely are at that point of having to repaint or another solution for a tank. Sounds like you have already talked yourself in to a fabricated tank. I would definitely stick with aluminum if possible because of the weight factor and resistance to the elements. Although not totally immune to the elements it would be better then steel internally unless you decided to coat the inside. Of course the outside would be easier to keep shined up with the diamond plate steel. Your weld lines would still present problems though which leans me back towards aluminum. What ever you decide on I know it will be different. Good luck and look forward to the build.
      2 - 80 LGs bought one new
      81 LH
      02 FXSTB Nighttrain
      22 FLTRK Road Glide Limited
      Jim

      Comment


      • #4
        Unfortunately, that's an all-too-typical problem. At anything less than a baked finish, this can be expected. 'Hardened' paints will help with this, but still won't be impervious if fuel is allowed to sit on it for too long.

        TC, you like to try 'new things', so how about this?....
        http://excaliburcarbonfiber.com/

        This is pretty much standard fare on race cars these days, the only 'DIY' issue I can see will be the difficulty of forming it over the curved surfaces and getting nice seams. I have no doubt that custom graphics would be big bucks, but you may be able to find something 'off the shelf' that tickles your fancy. The 'oem'-grade vinyls out there these days are pretty durable, JAT...

        If you decide to paint, I've had good luck with these guys products...
        http://www.thecoatingstore.com/Home_Page.html
        ... although all I've used is their single-stage colors, which if you're trying to do graphics won't be the best choice. I've found the 'hardened' paint actually easier to use in terms of application (using the 'detail' gun from this HF set http://www.harborfreight.com/profess...-pc-61472.html ), with the main downside being once you start applying paint, there's a definite 'time window' you have to stay within to allow proper chemical bonding of the coats. Basically, once you start, you have to finish; no stopping/starting in the middle. PM me if you want more detail....

        And there's always powdercoating. Quite a bit tougher to do graphics (but not impossible) and not being able to do the plastic bits are just a few of the limits, but it is pretty much impervious to fuel spillage.
        Fast, Cheap, Reliable... Pick any two

        '78E original owner - resto project
        '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
        '82 XJ rebuild project
        '80SG restified, red SOLD
        '79F parts...
        '81H more parts...

        Other current bikes:
        '93 XL1200 Anniversary Sportster 85RWHP
        '86 XL883/1200 Chopper
        '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
        Cage: '13 Mustang GT/CS with a few 'custom' touches
        Yep, can't leave nuthin' alone...

        Comment


        • #5
          Damn! That is a heartbreaker TC. Did you fill it past the neck? I think gasoline a a liquid that appreciably expands with temperatuue. The tank at the station is buried and the gas can be quite a bit cooler than ambient!
          Skids (Sid Hansen)

          Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

          Comment


          • #6
            Does anyone know what Harley uses on their tanks?
            I spill/get backsplash on my Harley all the time and haven't had a single issue with paint being damaged. I don't believe I've ever wiped it off, and I know some has seeped under my tank bag, but I took a peak under it and it looks just fine.
            '79 Yamaha XS11 SF (project)
            '11 Harley Nightster (street)
            '03 KTM 125sx (dirt)
            '03 Suzuki GSXR-600 (track)
            '73 Jawa Californian (collecting dust)

            Comment


            • #7
              Most original paint is baked and is virtually impervious to these issues. Get a bike that's been RUNNING for 30+ years and it's more than likely been painted a time or 2.
              Greg

              Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

              ― Albert Einstein

              80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

              The list changes.

              Comment


              • #8
                Originally posted by PMKXS11 View Post
                Does anyone know what Harley uses on their tanks?...
                Harley uses a base/clear coat finish with a hardener, then bakes it. The baking is the big difference. I've never seen any lift, but I have seen it discolor with enough exposure, so even their paint isn't bulletproof...
                Fast, Cheap, Reliable... Pick any two

                '78E original owner - resto project
                '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
                '82 XJ rebuild project
                '80SG restified, red SOLD
                '79F parts...
                '81H more parts...

                Other current bikes:
                '93 XL1200 Anniversary Sportster 85RWHP
                '86 XL883/1200 Chopper
                '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
                Cage: '13 Mustang GT/CS with a few 'custom' touches
                Yep, can't leave nuthin' alone...

                Comment


                • #9
                  Gotcha, looks like I'm gonna have to find someone that'll bake the paint on
                  '79 Yamaha XS11 SF (project)
                  '11 Harley Nightster (street)
                  '03 KTM 125sx (dirt)
                  '03 Suzuki GSXR-600 (track)
                  '73 Jawa Californian (collecting dust)

                  Comment


                  • #10
                    Hey PMK

                    I also own a 2002 Night Train and had it in storage for ten years. Working in another state, divorce... etc... long story. I had it stored and I was doing due diligence to try to keep the tank from corroding by keeping a good full tank of gas in it and my other bike 80 MNS. To do this I would make sure to refresh at least half the tank every six months or so. Sometimes it was shorter and sometimes longer periods between refreshes. Well about 5 years in to this process my paint began peeling around the gas caps on both bikes. On my MNS it was peeling down to primer very quickly and on my Harley the clear coat began bubbling. The paint job on the Harley was factory and the one on the MNS was my first restore paint job which I did myself. I had the facilities to accomplish that the first time and I am a painter from my military days. The moral of this story is that all paints fail when exposed over a duration of time to gas from spills and or fumes. My damage was a combination of both. Although I diligently made sure I cleaned all spillage as good as I could I was not able to prevent the damage it did. I suspect that with the heat here in the south hitting 110 plus degrees in a metal storage facility caused the gas in the tanks to expand and the fumes did there deed.
                    2 - 80 LGs bought one new
                    81 LH
                    02 FXSTB Nighttrain
                    22 FLTRK Road Glide Limited
                    Jim

                    Comment


                    • #11
                      I am lucky in that a man that runs a dealer body shop paints my tanks and parts. He does it "On the side..wink" but does run it thru the body shop oven. Its disappointing that the clear must be baked on to not lift due to fuel. Im so anal when fueling my bikes to not get even a drop on the tank. I about had a seizure when my front M cylinder was weeping and putting tiny droplets on my tank.

                      Comment


                      • #12
                        Lol, changing out my front Master Cylinder last week, and reverse-bled it with the cap off! Blew all over my tank! I ran inside for a cup of sudsy water, and hoped for the best. All was well.
                        1979 XS1100F
                        2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

                        Comment


                        • #13
                          hey TC...Ya know at XSSE I saw EarlG's tank and he had that powder coated Grey...it was very dark and I thought it was black...but it looked great...you might want to look into that...Sorry you had that happen...its happened to me as well with Swampthing...
                          1980 XS650G Special-Two
                          1993 Honda ST1100

                          Comment


                          • #14
                            Painted the tank on my 1100 Spectre (long since gone) using Centuari and a hardener. Never had the paint lift even when I spilled fuel. Mine was a single color paint job though. Imron (do they still even make it?) is impervious to almost anything.
                            When a 10 isn't enough, get a 11. 80g Hardbagger

                            Comment


                            • #15
                              Originally posted by webbcraft2150 View Post
                              Painted the tank on my 1100 Spectre (long since gone) using Centuari and a hardener. Never had the paint lift even when I spilled fuel. Mine was a single color paint job though. Imron (do they still even make it?) is impervious to almost anything.
                              Imron (spell) is a killer if you don't use equipment designed to protect you from it's fumes/vapor. Had my 79 done in a heavy flake silver Imron, did not know anything about it, neither did the guy that did the job. He had huge doors on either end of his shop that he mostly kept open (saved his life).
                              Guy down the road did an Imron job on an entire car in his booth using his standard equipment and died in the hospital 4 hrs. later. Doc said there was nothing they could do, the catalyzed vapor went into his lungs and slowly solidified freezing his lungs as the chemical reaction hardened what had gone into his lungs.
                              They say spray bombs have a dose of cancer in every can if not used right.
                              76 XS650 C ROADSTER
                              80 XS650 G Special II
                              https://ibb.co/album/icbGgF
                              80 XS 1100 SG
                              81 XS 1100LH/SH DARKHORSE
                              https://tinyurl.com/k6nzvtw
                              AKA; Don'e, UD, Unca Don'e

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