Reducing Windnoise / Raingutter Fillers

Will they work on a beetle?

To test if it would work I first put some duct tape over the raingutters:

After I took this picture I put another smaller piece of tape on the top of this piece of tape, to close the hole at the top and to make it more smooth.

And it seems to work, on the first run (with tape) I noticed the engine sound was now louder than the wind noise. There was still wind noise audible. But it seemed to come from the outside mirror or the upper door hinge (which is sticking out too on the beetle).
I drove on the freeway at 130 km/h (according speedometer) to a city nearby, aprox. 5 kilometers. Then drove back to my home-town on the same highway.

Then I removed the tape and drove the same highway again at the same speed. The sound seemed louder, and the wind noise was louder than the engine noise.
I can’t back it up with hard figures, I don’t own a decibel counter.

I wanted to give this a try, but they aren’t available for beetles. I had to make my own from scratch. Which suited me better anyways because it would be cheaper too. 🙂

See the next page.

27 Comments

    • Hi Jürgen,

      I have sold a few sets, but not much. They are still a bit “experimental”, I create them out of thin plastic using my homemade vacuum former.
      They require work to get smooth too, it is not a nicely finished ready to use product.
      I don’t have any sets “in stock” currently. I sometimes create them when more people ask about it, and then I create a few sets in a batch.

      Greetings,
      Gerrelt.

      • Hi Gerrelt,
        my request is nearly 1 year ago. I am still interested (as Jeff Kritz :))
        How long is your mail list of interested guys?
        We are just in front of a new Season……
        All the best for 2017
        Jürgen

        • Hi Jürgen,

          I see what I can do… 🙂
          I hope I will produce some this year, preferabele before the season starts of course..

          Best wishes for 2017 to you too!

          Greetings,
          Gerrelt.

      • I have been trying for the longest to purchase a rear roof spoiler and a pair of reflectors from you without success. I’m reaching out again.

    • Hi Jeff,

      I can add your e-mail to a list, then I will inform you when I make new ones (but that take quite some time..).
      A set will cost around 30 euros.

      Greetings,
      Gerrelt.

    • Hi Khalid,

      OK, I will add you to the list.
      Yes, they will allow water to pass underneath. They are hollow, and there is a hole at the top and the bottom.

      Greetings,
      Gerrelt.

  1. I would also be interested in a set of these. I already have one of your rear window spoilers. Thanks.

    • Hi Rick,

      I will add you to the list (and make a mental note to start making a batch again…).

      Greetings,
      Gerrelt.

  2. Hej Gerrelt,
    here is one more to put on your list for gutter fillers. After traveling Germany north to south and back in my VW 1303 Bubster, I feel that I am in need for some aerodynamic upgrades. Wind noise is quite bad when cruising at 160-180km/h.

    Greetings from Sweden,
    Olaf

    • Hi Olaf,

      I just spent an hour or so going through the excellent build thread of your Boxer Beetle. Wat a brilliant build, very nice!
      Very cool car.

      I will add you to the list, and try to make some time soon to make a batch….

      Greetings,
      Gerrelt.

  3. I’d be interested ina pair of these gutter fillers and a rear window spoiler also. Can you get in touch if you have any for sale currently?
    Thanks
    J

    • Hi James,

      I am currently producing a new batch, but they will probably all be spoken for.
      Shall I put you on the list?

      Greetings,
      Gerrelt.

      • Hi, yes that would be good, but it also depends on the price including the roof spoiler.
        Maybe you could email me?
        Thanks!

  4. Gerrelt, very cool stuff you are doing.
    I am interested in the rain gutters and rear window spoiler for ’74 Super.
    – Craig

  5. Hi Gerrelt
    I’m also interested in a set of rain gutters and a roof spoiler. Do you still sell them?

    Best regards from Germany
    Mig

1 Trackback / Pingback

  1. Aerodynamic wind noise suppression - 1951 Mercury custom - Page 2 - Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com

Leave a Reply

Your email address will not be published.


*