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  1. #1
    Senior Member FlatFender's Avatar
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    pressing crown race at home?

    any ideas?
    for my mtb I used a piece of PVC Pipe that fit well, but now im installing a 1" one on a different bike....

  2. #2
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    Someone mentioned using soft copper plumbing pipe and a deadblow mallet. If in doubt, a LBS would do it for a couple of bucks.

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    I've always used the PVC pipe so I'd try to find one with a 1 1/8" inner diameter. However, it would probably be cheaper to have the LBS do it than to buy the pipe.

  4. #4
    In beaurocratic limbo urbanknight's Avatar
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    I always used 2 scrap pieces of 2x4 stud and a rubber mallet. Crude, but when done with finesse it works just fine.

  5. #5
    Senior Member DieselDan's Avatar
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    1 1/8" diameter by 3" piece of pipe, usually found in the plumbing section of any hardware store. Lowe's wouldn't have that either.
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  6. #6
    Spelling Snob Hobartlemagne's Avatar
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    Here's the explanation on making this:
    http://www.mindspring.com/~d.g1/headset.html

    The first rule of flats is You don't talk about flats!

  7. #7
    me have long head tube TallRider's Avatar
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    The tool you pictured, which I've built for myself as well, is for pressing headset cups into the head tube, not for a crown race.

    I've always pressed crown races on by using a flathead screwdriver and a hammer, tapping against thickest part of the crown race (the part that sits right against the fork).

  8. #8
    Your mom
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    Done it with the PVC, no problem, but I suspect the 1" inner diameter is your problem. Can PV be had with this diameter?

  9. #9
    In beaurocratic limbo urbanknight's Avatar
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    Quote Originally Posted by timcupery
    The tool you pictured, which I've built for myself as well, is for pressing headset cups into the head tube, not for a crown race.
    Oops, I misread that as well. For the crown race, I used a vice with plastic covers, rotating the fork as I tapped it on.

  10. #10
    Mmmmm potatoes idcruiserman's Avatar
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    How about facing the head tube? Is this typically needed?
    Idaho

  11. #11
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    has anybody attempted the above methods to a fork with a carbon steerer tube?
    I wouldn't mind trying these with an alloy steerer tube, but might be a costly experiment for carbon.

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    Quote Originally Posted by seriouslysilly
    has anybody attempted the above methods to a fork with a carbon steerer tube?
    I wouldn't mind trying these with an alloy steerer tube, but might be a costly experiment for carbon.
    I've done it on a carbon steerer fork, although it doesn't make any difference as the fork crown itself is, in my experience, always aluminum. Grease the inside of the crown race and press it with your hand into position the crown. Then tap it in place with whatever method you want to use. Done right, you never touch the actual steerer.

  13. #13
    Sometimes knows stuff. rmfnla's Avatar
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    Quote Originally Posted by Proximo
    I've always used the PVC pipe so I'd try to find one with a 1 1/8" inner diameter. However, it would probably be cheaper to have the LBS do it than to buy the pipe.
    Where do you buy your PVC tubing; Neiman Marcus? Here in L.A. it's about a buck a foot.

    FWIW, a piece of copper pipe is best, and you don't need a mallet (rubber or otherwise); just put the race in position, slide the copper pipe over the steering tube, turn the whole thing upside down and tap the copper pipe against the floor or your bench or whatever.

    Takes seconds and works every time, even on carbon fiber.
    Today, I believe my jurisdiction ends here...

  14. #14
    Senior Member TimJ's Avatar
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    Couple 2x4's screwed to the bottom of a small chuck of 2x4. I put the ends of the long peices on the race and smack the top with a rubber mallet. Works fine, only takes one good whack. I was thinking of having my dad build a fancier version with some chunks of some hardwood inlaid at the bottom rather than just the soft pine.
    fun facts: Psychopaths have trouble understanding abstract concepts.
    "Incompetent individuals, compared with their more competent peers, will dramatically overestimate their ability and performance relative to objective criteria."

  15. #15
    Taking "s" outta "Fast" AfterThisNap's Avatar
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    for years I used this method at home:

    Get a big adjustable wrench with jaws big enough for the steerer to pass through. Close the jaws enough that the edges of the wrench touch the top lip of the crown race. Place the crown itself (not the fork legs or dropouts) onto an upright board or the corner of a table. Gently tap the top of the wrench with a hammer, turn 90 degrees, tap turn 90, tap, and repeat until the race is perfectly seated.
    Carries suspicious allegiance to Brooklyn Machine Works.

  16. #16
    Senior Member FlatFender's Avatar
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    Quote Originally Posted by AfterThisNap
    for years I used this method at home:

    Get a big adjustable wrench with jaws big enough for the steerer to pass through. Close the jaws enough that the edges of the wrench touch the top lip of the crown race. Place the crown itself (not the fork legs or dropouts) onto an upright board or the corner of a table. Gently tap the top of the wrench with a hammer, turn 90 degrees, tap turn 90, tap, and repeat until the race is perfectly seated.
    ooohhh...I like this, ill try it

  17. #17
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    Quote Originally Posted by rmfnla
    Where do you buy your PVC tubing; Neiman Marcus? Here in L.A. it's about a buck a foot.
    Home Depot and they won't sell you just a foot. You buy it in 10' lengths.

  18. #18
    Senior Member DieselDan's Avatar
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    Quote Originally Posted by Proximo
    Home Depot and they won't sell you just a foot. You buy it in 10' lengths.
    No Ace Hardware or True Value Hardware in Denver? 1 1 1/8" x 6" piece of galvinized steel pipe is only $1.32 at Ace Hardware on this side of the country. Heck of a lot stronger then PVC (plastic) pipe and does more damage when you throw it at a cager.
    Bikes use brakes to stop.

    If your bike has breaks, don't ride it.

  19. #19
    Sometimes knows stuff. rmfnla's Avatar
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    Quote Originally Posted by Proximo
    Home Depot and they won't sell you just a foot. You buy it in 10' lengths.
    Screw Home Depot.

    Copper is still better.
    Today, I believe my jurisdiction ends here...

  20. #20
    Senior Member FlatFender's Avatar
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    Quote Originally Posted by Proximo
    Home Depot and they won't sell you just a foot. You buy it in 10' lengths.
    my HD has "cut offs" for about a dollar/foot.

  21. #21
    Sometimes knows stuff. rmfnla's Avatar
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    Quote Originally Posted by FlatFender
    my HD has "cut offs" for about a dollar/foot.
    That's encouraging, but copper is still better.
    Today, I believe my jurisdiction ends here...

  22. #22
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    Quote Originally Posted by rmfnla
    That's encouraging, but copper is still better.
    ...and keeps its value

  23. #23
    In beaurocratic limbo urbanknight's Avatar
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    Quote Originally Posted by FlatFender
    my HD has "cut offs" for about a dollar/foot.
    That depends on the store. I worked at a few HDs and only the really "stubborn" ones who get away with ignoring company policy use the old SKUs for cut pipe. After seeing the true priorities of that company, I am now a Lowe's shopper.

  24. #24
    Gone, but not forgotten Sheldon Brown's Avatar
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    Quote Originally Posted by FlatFender
    any ideas?
    for my mtb I used a piece of PVC Pipe that fit well, but now im installing a 1" one on a different bike....
    When I was a kid, I used the headset itself, just screwing the threaded race down hard to press the fully-assembled headset together. In some cases, if memory serves, I would then have to re-tighten it after a few miles, as it got seated into position by riding.

    These days I have the correct tools...

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  25. #25
    Your mom
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    Galvanized steel doesn't make any sense. You want something SOFTER than the crown race.

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