Technical & Reference Section > Tech and Restoration

cups

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Danny BMX:
so i need to scrape the powdercoating out first. I live in a flat so cant be doing it to late

theRuler:

--- Quote from: Danny BMX on June 03, 2012, 02:28 PM ---so i need to scrape the powdercoating out first. I live in a flat so cant be doing it to late

--- End quote ---

Yeh if there is powder inside the headtube it makes the job much harder!

It doesn't exactly fall off either.  Good luck!

bobbbbsy:
a big g clamp and 2 bits of wood !

TwoBobRob:
I'm with the Ruler on this, but here's a little more detail;

You need another pair of hands, especially if you're doing this for the first time, two lumps of 4x2 wood or similar, a drop of oil or grease and a hammer.

Right, headset first;

A good powdercoater won't have done the inside of your headtube but if he has, you MUST clean the area up completely first, then rub a lttle oil or grease areound where the cup is going to sit. Then get your other pair of hands to hold the frame so you can position a cup nice and level ready to be whacked in. The headtube must rest on one of your lumps of wood, then you place the other lump of wood on top of your nicely positioned cup and give it a whack. Don't be surprised if it takes a few goes, or that you're hitting it harder than you think you should.

To summerise, Clean & lube the headtube, set the work up in this order = wood/frame/cup/wood/hammer.  Give it a good lump with your hammer. Good luck!

Now, Bottom Bracket;

Exactly the same as the headset  :)

Enjoy.
  

Danny BMX:
Thanks for the help will try put pics up later if i get it done

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