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Paint crack/drop on near new exhaust

  • micathia
    micathia
    4 years ago
    Hi, 
    This is Rinehart Cross back on Dyna. 
    Any idea what could cause the problem? 

    Here's what I did several days before I found this:
    1. commuted everyday, started in early morning around 0 to 1 degree.
    2. use car wash liquid and pressure water spray to wash the bike.  


    an enlarged on the crack area:




    Capture.JPG
    IMG_20200611_130310.jpg
    IMG_20200611_130315.jpg
  • steelo
    steelo
    4 years ago
    Very sorry to see M. I'd say what's happened is the high pressure water has gotten into those cracks, laid under the paint, perhaps frozen and then expanded when hot, blowing off the finish. You can see the cracks in the paint
  • micathia
    micathia
    4 years ago
    Quoting steelo on 21 Jun 2020 08:00 AM

    Very sorry to see M. I'd say what's happened is the high pressure water has gotten into those cracks, laid under the paint, perhaps frozen and then expanded when hot, blowing off the finish. You can see the cracks in the paint

    So..I shouldn't use pressure water spray to wash at all? I think lots of people use it to wash bikes? 
    Other part of the bikes are no problem. 
  • steelo
    steelo
    4 years ago
    I use a pressure washer on both my bikes. I let the soap suds sit there for quite a while and then PW. I am careful (ie back away) around bearings (now spokes as I caused rust on the inside of a rim) painted areas and electronics. My pipes are chrome so not the potential to blow the paint off or water in.
    I reckon you could get away with a light sand with wet and dry and pot black or high temp black paint. Those are cooked so anything to give them longer life before you replace (or not)
  • Mr.Mow
    Mr.Mow
    4 years ago
    Quoting micathia on 21 Jun 2020 07:54 AMedited: 21 Jun 2020 08:01 AM

    Hi, 

    This is Rinehart Cross back on Dyna. 
    Any idea what could cause the problem? 

    Here's what I did several days before I found this:
    1. commuted everyday, started in early morning around 0 to 1 degree.
    2. use car wash liquid and pressure water spray to wash the bike.  


    an enlarged on the crack area:




    Capture.JPG
    IMG_20200611_130310.jpg
    IMG_20200611_130315.jpg
    You buy em new? Just go to retailer, say nothing, shrug, say ‘warranty’.
  • micathia
    micathia
    4 years ago
    Quoting micathia on 21 Jun 2020 07:54 AMedited: 21 Jun 2020 08:01 AM

    Hi, 

    This is Rinehart Cross back on Dyna. 
    Any idea what could cause the problem? 

    Here's what I did several days before I found this:
    1. commuted everyday, started in early morning around 0 to 1 degree.
    2. use car wash liquid and pressure water spray to wash the bike.  


    an enlarged on the crack area:




    Capture.JPG
    IMG_20200611_130310.jpg
    IMG_20200611_130315.jpg
    Quoting Mr.Mow on 21 Jun 2020 09:17 AM

    You buy em new? Just go to retailer, say nothing, shrug, say ‘warranty’.

    Yes, new from Harley Heaven, Ringwood. They sourced it from Rollies. 
  • paulybronco
    paulybronco
    4 years ago
    I am going to say its possibly related to the tune. Twin cams run hot anyway and without knowing whats done to the bike other than seeing the a/c thinking its running lean
  • micathia
    micathia
    4 years ago
    Quoting paulybronco on 21 Jun 2020 11:15 AM

    I am going to say its possibly related to the tune. Twin cams run hot anyway and without knowing whats done to the bike other than seeing the a/c thinking its running lean

    the air cleaner suck too much air? 
  • tussuck
    tussuck
    4 years ago
    Im certainly no expert, but I would say the paint/costing is failing; perhaps due to an issue with the metal prep underneath.
    I would see about returning them to Rollies and see what happens. 
  • WideglidingNZ
    WideglidingNZ
    4 years ago
    Quoting tussuck on 21 Jun 2020 12:20 PM

    Im certainly no expert, but I would say the paint/costing is failing; perhaps due to an issue with the metal prep underneath.

    I would see about returning them to Rollies and see what happens. 

    Yes +1, Rinehart has a good name and should stand behind their product, this is a heat shield so just demand a replacement one
  • paulybronco
    paulybronco
    4 years ago
    Quoting paulybronco on 21 Jun 2020 11:15 AM

    I am going to say its possibly related to the tune. Twin cams run hot anyway and without knowing whats done to the bike other than seeing the a/c thinking its running lean

    Quoting micathia on 21 Jun 2020 11:39 AM

    the air cleaner suck too much air? 

    No just more air and not the equivalent more amount of fuel maybe causing the bike to run leaner. This in turn makes the exhaust run hotter transferring that additional heat to the cover pushing the coating to beyond its limit causing it to fail.
  • beaglebasher
    beaglebasher
    4 years ago
    How did a dodgy paint job thread turn into a " running too lean , check your tune thread? "
    Who started that shit?  Thats right ...... pb
    Dont worry about all that air/ fuel /tune bullshit mic. Just take them back and get them replaced.
  • steelo
    steelo
    4 years ago
    In PB's defence BB, M did ask what might have "caused the problem" in his first post. I agree that taking them back is the solution.
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