Crown Race Setting Tool Hacks?

Discussion in 'The Shop' started by rideit, Nov 6, 2018.

  1. rideit

    rideit Bob the Builder

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    Anyone know a good hack for setting a 1.5" crown race? My old tricks don't work...
     
    #1 -   Nov 6, 2018

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  2. Westy

    Westy the teste

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    Heat and hammer

    If that doesn't work: angle grinder
     
    #2 -   Nov 6, 2018
  3. Nick

    Nick My name is Nick

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    14" of PVC with the correct id.

    The last crown race that I set I just assembled everything, and used extra spacers and pulled everything together using the star nut, top cap and screw.
     
    #3 -   Nov 6, 2018
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  4. jstuhlman

    jstuhlman We noticed.

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    if you don’t have a pvc pipe, maybe open a large crescent wrench around the steerer tube and grently tap/work around with a hammer? also heat and liberal amounts of grease.
     
    #4 -   Nov 6, 2018
  5. rockofullr

    rockofullr confused

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    Get a crown race tool and or know a guy who has one?

    Or get the right size pipe, put a cap on one end and use that to smack it on there, carefully.

     
    #5 -   Nov 6, 2018
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  6. StiHacka

    StiHacka Compensating for something

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    My advice would be not to fuck with anything steel/iron anywhere near the alloy steerer. The PVC pipe is a good trick. You don't need to cap it / hammer it either - just turn the fork upside down and make gravity and momentum do the work by bouncing it a couple of times.
     
    #6 -   Nov 6, 2018
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  7. canadmos

    canadmos Mater Slayer

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    piihb?
     
    #7 -   Nov 6, 2018
  8. Jm_

    Jm_ Turbo Monkey

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    4 food drop?

    Grease that bitch and use the star-nut/headset to press it on?
     
    #8 -   Nov 6, 2018
  9. jstuhlman

    jstuhlman We noticed.

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    I’d drop lima beans, any kind of paté, goat cheese, and liver. YUK!
     
    #9 -   Nov 6, 2018
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  10. rideit

    rideit Bob the Builder

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    Oh my god, those four are on my list.
    Except fresh Lima beans, those are good.
    I despise goat cheese.
    The other tips are good as well!
     
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  11. jstuhlman

    jstuhlman We noticed.

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    also prunes, prune juice....
     
  12. Westy

    Westy the teste

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    If you don't have a PVC pipe a cold chisel will also work well.
     
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  13. HardtailHack

    HardtailHack used an iron once

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    For Cane Creeks I kept an old bearing and used that and a pipe to drive it down.

    Don't run them now as their headsets to suit my bike suck.
     
  14. 6thElement

    6thElement Schrodinger's Immigrant

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    Pushing everything together using the star nut sounds like a good way to shorten your bearing life unless you have an old bearing as @HardtailHack suggested.

    Crown race tool ftw here.
     
  15. Jm_

    Jm_ Turbo Monkey

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    Well then it wouldn't be a hack...
     
  16. rideit

    rideit Bob the Builder

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    I do have an old bearing, that is a solid tip.
     
  17. Nick

    Nick My name is Nick

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    Why so? It's constant pressure, not hammering/impact. I'd think just riding puts more stress on bearings than slowly squeezing them together during assembly.
     
  18. roflbox

    roflbox roflborx

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    I did PVC pipe, 1.5" pipe and then a 1.5" coupler to a 1.5 to 1.25 reducer and that did the trick
     
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  19. jonKranked

    jonKranked Press Button, Receive Stupid

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    definitely PVC pipe. make sure the business end is a perpendicular to the length of the pipe otherwise it won't get the race on straight; you'll have to bugger it around some to make sure its flush on the crown
     
  20. WestCoastHucker

    WestCoastHucker Turbo Monkey

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  21. HardtailHack

    HardtailHack used an iron once

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    It's a M6 screw, in mild steel that can apply over 700lb of force.
    You no doubt can do it but it's pretty cruel, a thrust bearing may be rated for such a force but an ACB wouldn't be.
     
  22. Nick

    Nick My name is Nick

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    Ok maybe it could apply that much force but it doesn't have to. It only has to move the bearing onto the bearing seat and overcome the press-fit tolerance.
     
  23. rideit

    rideit Bob the Builder

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    I would think the star nut would creep upwards before that kind of force, but I don't know Jack.
    Jack knows.
     
  24. Nick

    Nick My name is Nick

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    paging Jack .... Jack to the white courtesy phone.

    OK :monkey: Engineers ... how much force would it take to overcome the typical press-fit of a bearing race onto a fork?
     
  25. Westy

    Westy the teste

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    42 forces
     
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  26. johnbryanpeters

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    Don't neglect the femtoid twitch coefficient.
     
  27. rideit

    rideit Bob the Builder

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    I also would think it would depend on the individual manufacturing tolerances of the fork and crown, but I don't know shit.
    Shit knows.
     
  28. rideit

    rideit Bob the Builder

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    So, I finally got around to cutting a few steer tubes. The headset installation/using the star nut as a press technique worked a treat. Easy peasy. A little grease and a three way allen, and it was done.
     
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  29. ChrisRobin

    ChrisRobin Turbo Monkey

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    I found my latest Works Components headset came with a crown races that had a gap in it. I pressed it on with my fingers. Works like a champ!
     
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  30. Flo33

    Flo33 Monkey

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    Like a lot of descent headsets do.
     
  31. StiHacka

    StiHacka Compensating for something

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    CC 10 comes with a plastic split crown race. Looks awful but didn't detect any subpar performance from the race alone (the terrible bearings that came with it - that's a different story).
     
  32. HardtailHack

    HardtailHack used an iron once

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    But not ascent ones?
     
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  33. Flo33

    Flo33 Monkey

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    Got me.
     
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