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Thread: Stream silver futura tank discolor?

  1. #1
    apriliaforum Member
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    Stream silver futura tank discolor?

    Does anyone elses stream silver futura do this? It starts to get a copper/orange tone in shade and when its overcast. I wouldnt say it looks bad, but it starts to not match the other fairings and it definitely is noticeable. I dont think it has been repainted, and I believe in the sun its not noticeable but I don't pay attention anymore so im not 100% on that. If it was repainted they did a very nice job of wet sanding and color matching, its smooth as can be and also has the aprilia champions badge on it as well still.

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    Here are pictures. Im wondering if buffing compound would do anything?

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  3. #3
    apriliaforum expert meanstrk's Avatar
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    This is the direct result of fuel seeping through the plastic tank and discoloring from behind.
    Ron
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    Well, thats awesome! Whats the fix? And why did this happen?


    Last edited by TrilkB; 09-09-2014 at 10:07 PM.

  5. #5
    apriliaforum expert bikpaintr's Avatar
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    If fuel was seeping through the plastic I would think that you'd have blisters & paint lifting, not just discoloration.
    John B.
    02 Ash Black w/Staintunes, PC3 w/custom map, Evo Filter, Mille Air Boot, derestricted air box, Heli-Bars, Wilbers shock, new rectifier, Scottoiler, heated grips, T'meister, c/f frt. fender & hugger.

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    apriliaforum Member spesnaz's Avatar
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    It only takes fuel vapor, trapped over time. I have to agree with Ron. Nylon is a great material, but it is porous to some extent.

    Add ethanol as a polar solvent, and you have a pathway for water, and some fuel with it. This interaction can eventually affect the paint.

    From the outside, adhesives in "tank protector" decals can react with the clear coating as well.

    Bob

  7. #7
    apriliaforum expert RAS's Avatar
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    Quote Originally Posted by spesnaz View Post
    It only takes fuel vapor, trapped over time. I have to agree with Ron. Nylon is a great material, but it is porous to some extent.

    Add ethanol as a polar solvent, and you have a pathway for water, and some fuel with it. This interaction can eventually affect the paint.

    From the outside, adhesives in "tank protector" decals can react with the clear coating as well.

    Bob
    Speaking of tank protectors, I have the clear 3M stuff sold by Tankslapper on my tank. I see a little of the same color in places under that stuff on my tank. I always assumed it was the plastic film yellowing. Guess i'll have to peel it off - there is no adhesive, it's just stuck on with a static charge.

  8. #8
    apriliaforum expert meanstrk's Avatar
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    Quote Originally Posted by TrilkB View Post
    Well, thats awesome! Whats the fix? And why did this happen?



    The "fix" is to let the tank sit dry for a month or two and then do a coating on the inside to avoid fuel contact with the plastic. Then repaint the exterior.
    Ron
    MSgt USMC (Retired!)
    Semper Fi!
    WERA # 145
    IBA #38812

    RST Futura
    Colin Edwards RSV R Mille #066 (Sold now. Sigh...)
    2007.5 Tuono

    For custom paint work, check out http://www.trading-paint.com

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    Knowledge from experience the smartest kind !!

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    apriliaforum expert RAS's Avatar
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    I peeled some of my Tankslapper, 3M film off of my tank to see if it was the film or the paint. My Stream Silver is still. It's the plastic that's yellowed.

    I'd be curious to know if that tank is stained underneath as well.

  11. #11
    apriliaforum Junkie bmwbob51's Avatar
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    My tank exterior go saturated with gas accidently while off the bike and turned that same color, but slowly faded back to original silver.

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    as far as I know it doesnt have any film over it. I also took some rubbing compound to it and it didnt do anything

    BMWbob - On the way to my neices birthday I filled up with gas and I went to lift th nozzel up while still filling to get it higher in the tank befor the auto shut off clicked. Well I pulled it up 1/4 inch to far, got a face and lap full of gas. so it has happened that gas is on the outside, but I wiped it off really fast. Well as fast as I could since it also went straight into my eye as well. 2nd time ive had gas in my eye, hurts just the same each time lol. Thats a hell of a torture.

  13. #13
    apriliaforum Junkie bmwbob51's Avatar
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    Quote Originally Posted by TrilkB View Post
    as far as I know it doesnt have any film over it. I also took some rubbing compound to it and it didnt do anything

    BMWbob - On the way to my neices birthday I filled up with gas and I went to lift th nozzel up while still filling to get it higher in the tank befor the auto shut off clicked. Well I pulled it up 1/4 inch to far, got a face and lap full of gas. so it has happened that gas is on the outside, but I wiped it off really fast. Well as fast as I could since it also went straight into my eye as well. 2nd time ive had gas in my eye, hurts just the same each time lol. Thats a hell of a torture.
    My discoloration was on the outside and sounds like yours is from the inside!

  14. #14
    apriliaforum expert bikpaintr's Avatar
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    Quote Originally Posted by spesnaz View Post
    It only takes fuel vapor, trapped over time. I have to agree with Ron. Nylon is a great material, but it is porous to some extent.

    Add ethanol as a polar solvent, and you have a pathway for water, and some fuel with it. This interaction can eventually affect the paint.

    Bob
    So if that was the case everyone that was using E10 fuel would be seeing this same issue. I've run E10 since 2004 & no discoloration yet.
    John B.
    02 Ash Black w/Staintunes, PC3 w/custom map, Evo Filter, Mille Air Boot, derestricted air box, Heli-Bars, Wilbers shock, new rectifier, Scottoiler, heated grips, T'meister, c/f frt. fender & hugger.

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    Mine is a 2001 with 5800 miles on it...it sits alot which is probably why it happened. Oh well, it still starts and I dont stare at the tank while riding.

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