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The Bumper Grommets Thread

Discussion in '206/246' started by simonc, Dec 21, 2010.

  1. omgjon

    omgjon F1 Rookie
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    Feb 13, 2005
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    US Model 8X$79=a lot
     
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  3. TKO

    TKO Formula Junior

    Oct 22, 2004
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    Tom Kearns
    $79 for a set if I remember correctly.
     
  4. omgjon

    omgjon F1 Rookie
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    Feb 13, 2005
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    I called and they wanted $79 each!!
     
  5. champtc

    champtc Formula Junior

    Apr 18, 2004
    732
    Ask Alberto to make some and lots of people will buy em!
     
  6. racerboy9

    racerboy9 Formula 3
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    Nov 3, 2003
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    This is a re-post I made about the grommets:

    Don Rudd gave me some he made playing around casting a rubber-like compound while at T Rutands years ago. I didn't think much of it at the time but when I finally put them on the car they were fantastic. Tight fit, proper look and seemed very durable. May have been a polyurethane product or similar. Search Google/Youtube for casting plastic, rubber and maybe urethanes. The casting process seemed pretty easy and there are various compound for different levels of hardness.
    This seems like a job for Verell!
     
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  8. outofpocket

    outofpocket Formula Junior

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    #31 outofpocket, Jan 26, 2013
    Last edited by a moderator: Sep 7, 2017
    If the grommets go over the tubes extending from the body my paint guy measured them at 1 1/4 inches. This is a US spec model. Did he measure incorrectly?
    Image Unavailable, Please Login
     
  9. omgjon

    omgjon F1 Rookie
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    #32 omgjon, Jan 31, 2013
    Last edited by a moderator: Sep 7, 2017
  10. Edward 96GTS

    Edward 96GTS F1 Rookie
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    Nov 1, 2003
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    $ 20 each is peanuts in the scheme of things. i vote to spend the $20 each. what is that total. $160? cheap compared to the labor to remove bumpers and install if done at a later date. sorry, jmho.
    ed
     
  11. omgjon

    omgjon F1 Rookie
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    I will say the grommets actually fit much better as they are more pliable and a snugger fit. Let's see what others have to say.
     
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  13. swift53

    swift53 F1 Rookie
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    Alberto
    Grommets.

    Regards, Alberto
     
  14. racerboy9

    racerboy9 Formula 3
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    I would toss this project to Verell and see what he has to say. $79 a grommet is far beyond reason to me. $79 a set is not so bad. That bumper grommet seems to me a very easy piece to cast.
     
  15. Verell

    Verell F1 Veteran
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    May 5, 2001
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    GOOD NEWS: I'm sure I could make them, would need at least one in very good condition for a mold pattern, as the reproductions would exactly duplicate every detail of the pattern. They would be made of chemical & uv resistant polyurethane.

    To get the cost down as much as possible I would have to make a mold from the original, then make 7 more pieces to make an 8 part mold. I need to know the weight to get a good price estimate, but most likely we'd be talking $120 - $160 for a set of eight. A lot would depend on the yield. Another cost factor would be the yield. Depending on a part's shape, it can be hard to avoid getting a small surface bubble or 2.

    Some pictures of the part by itself would be a big help.

    BAD NEWS: I'm still badly backlogged on promised molds, including the door pocket mold, and have almost a 4 month queue of column switches to be restored, so it would be several months before I could possibly start on one.
     
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  16. HMB-Dino

    HMB-Dino Formula 3
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    RonG
    This is just an fyi...I have not acquired these (NA for my Euro M-series).

    FERRARI RU-RBG
    DAYTONA/DINO REAR BUMPER GROMMET
    
    PRICE PAIR 60.00
    
    ID RU-RBG

    New Items | Perfect Reflection Products
     
  17. racerboy9

    racerboy9 Formula 3
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    #39 racerboy9, Feb 18, 2013
    Last edited by a moderator: Sep 7, 2017
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  18. daytonaman

    daytonaman Formula Junior

    May 1, 2007
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    howard pigdon
    Racerboy, do you know what colour that green is ?
     
  19. racerboy9

    racerboy9 Formula 3
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    The color is verde medio metallizzato.
     
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  20. outofpocket

    outofpocket Formula Junior

    Dec 6, 2007
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    GD
    Where did you find them?
     
  21. synchro

    synchro F1 Veteran

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    They fit the tubes with the correct inner diameter, have the correct surface curve but are hard plastic so do not contour to the body well and are not probably the best product.
     
  22. synchro

    synchro F1 Veteran

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    Any word on the backlog?
    I could provide one of Don's repros that is new but you would be making a "cast of a cast"
     
  23. synchro

    synchro F1 Veteran

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    Is it difficult to make a casting for soft stuff like this or are there difficulties I'm not seeing?
    I may start these up myself if I can ...
     
  24. Verell

    Verell F1 Veteran
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    #47 Verell, Jul 29, 2020
    Last edited: Jul 29, 2020
    Casting is not hard, designing & making a mold that will produce multiple ones without bubbles is. The mold is silicone. Once mixed you pull a vacuum on it to eliminate mixing bubbles, then pour the silicone over the pattern & cure it under 40psi pressure overnight. I use modified medical autoclaves

    When casting a part, you also have to cure the filled mold under 40 psi to ensure a void free result.
     
  25. synchro

    synchro F1 Veteran

    Feb 14, 2005
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    Any updates?

    I lost one
     

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