Results 1 to 4 of 4

Thread: Adhesive to mount fiberglass fenders

  1. #1
    Lepton
    Join Date
    Apr 2011
    Posts
    335
    Country
    United States

    Adhesive to mount fiberglass fenders

    I read somewhere to use 3M window urethane to glue the fenders to the mounts. It looked pretty good until I loaded the car on the trailer and started driving. The fenders came loose and were flapping in the wind. There was almost no adhesion to the fiberglass, and it wasn't hard to pull the material off the mounts. I had been 3 days since I applied it, so it was cured.

    The material that Brammo used was much harder and yellow-ish in color. Then they put something similar to the 3M window urethane on top of it. Anyone know what material they used or anything that would work better?
    Last edited by RyanD; July 25, 2013 at 05:12 AM.
    "You little punk bitch." -Wade Huisman, Keizer Wheels

  2. #2
    Lepton
    Join Date
    Apr 2011
    Posts
    335
    Country
    United States
    I think I'll sand the bottom of the fender to rough the surface and then try epoxy putty like this.

    Shop Oatey 4 oz Epoxy Putty at Lowes.com
    "You little punk bitch." -Wade Huisman, Keizer Wheels

  3. #3
    Neutron
    Join Date
    Aug 2010
    Posts
    2,677
    Country
    United States
    Mine started to pull up and my theory is that I did not rough up the surface enough and the resin in the carbon fiber still hadn't cured completely since they were only a few days old. On the area that started pealing up I applied some 2 part epoxy (basically gluing the 3m urothane to the fender) like this and now I can lift up on it with a good 30-40 lbs of force and it seems nice and set.

    I think the fender needs to be completely cured, completely cleaned and have a roughed up surface to aid in adhesion of the 3m urethane. If I started from scratch again, I'd do this, then apply some epoxy centrally and then the urethane over this.
    the high profile toy thrower

  4. #4
    Neutrino Norm's Avatar
    Join Date
    Aug 2010
    Location
    Lake Tapps, WA
    Posts
    2,223
    Country
    United States
    Quote Originally Posted by bolus View Post
    apply some epoxy centrally and then the urethane over this.
    X2

Similar Threads

  1. Wide rear fenders
    By pdxmac in forum Accessories Discussion
    Replies: 29
    Last Post: October 21, 2016, 08:25 AM
  2. ATOM II fiberglass nose & fenders wanted
    By jpstripeit in forum Parts and Accessories for Sale
    Replies: 1
    Last Post: April 2, 2013, 10:55 AM
  3. Wide Rear Fenders
    By ub2slow in forum General Ariel Atom Discussion (for all UK and US versions)
    Replies: 16
    Last Post: June 5, 2012, 07:21 AM
  4. Removable fenders
    By Norm in forum Build Projects
    Replies: 6
    Last Post: May 14, 2011, 01:18 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •