Plugging/filling/welding brake hole in forks?

Posted on
  • What is best? Want to do my forks before they go off for powder coating.


    2 Attachments

    • image.jpeg
    • image.jpeg
  • Personally, I wouldn't bother. But they're going to shotblast before powder coating, so any sort of filler, or stuff that isn't steel is unlikely to work. Obviously crown race & headset will need to be removed.

    I guess you could weld and grind it and it might not look too bad, but it will make your frame heavier and slower.

  • ^What he said. Almost.

    When I took my frame to be coated recently I was told that chemical metal products like JB Weld etc.not only wouldn't survive the blasting but even if you were to apply after blasting, the powdercoat will have a hard time sticking to it. They said silver solder/braze was fine to both blast and coat.

    Not sure you could fill a hole of that size with braze but you could braze something in there and file/grind/sand it all smooth.

    Or just use car body filler and spray the forks.

  • how about after it's PC'd roughen up the inside of the hole a little, use car body filler, leave it smooth on the side that you see but slightly larger, to create a lip, on the inside to increase the grip. Touch it up with ral code paint to match PC. you can always remove if you, or someone else, wants a brake.

  • i'm not sure if that penny will plug that hole, looks a little too big to me

  • Yeah I def thought that filler would fail shot blasting. Photos were pre bike tear down so don't worrie all components have been removed.

    Your right tho I think a pea size weld will make my bike really heavy and might loss 10 horse power damn

  • I was gunna cut the penny down first 😝

  • weld it, would be quick and easy. just take it to a car garage or anywhere with a welder, give it to them ultra clean and they could fill it, really common practice in welding.

    if youre in brighton i could do this for you

  • Not being funny but because that has a flat area to mount the brake, won't it look a bit weird anyway?

    I can understand wanting to do this if your blades flex when braking, I had filled a (badly drilled) brake hole on a track fork once, but that was a double plate / round steerer interface so it made sense to undo the shit drilling.

    As the fork doesn't look like a match to the frame anyway it all seems a bit pointless. #justsayin

  • I shall get a mate to try and puddle weld it then thanks guys!

    Fork are original I am pretty sure, nice old Steve Goff frame.


    1 Attachment

    • image.jpeg
  • A little more shaping then they are good to go!


    2 Attachments

    • image.jpeg
    • image.jpeg
  • good job!

  • Post a reply
    • Bold
    • Italics
    • Link
    • Image
    • List
    • Quote
    • code
    • Preview
About

Plugging/filling/welding brake hole in forks?

Posted by Avatar for user57097 @user57097

Actions