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General Category => Maintenance => Topic started by: wakdady on February 18, 2011, 12:01:45 PM

Title: How to ruin a frame trying to remove stem races
Post by: wakdady on February 18, 2011, 12:01:45 PM
I don't have a welder, that's first off. And I needed to replace my stem bearings. The dremel tool was my only friend.
This top race was fairly straight forward, but the lower was a real bitch. I didn't notice that there was a beveled edge further down and started going into the frame without knowing until it was too late.
Let this be a lesson to anyone else thinking of doing it this way, don't go too deep with that cut off tool!
Also, wear goggles, not safety glasses, because all that aluminum dust is now ALL up in my eyes!

(https://lh4.googleusercontent.com/_rX4-nVlemEE/TV1_3plwcyI/AAAAAAAABhk/FqDhigO0zq0/s640/IMG_0228.JPG)
here it is out of the stem

(https://lh6.googleusercontent.com/_rX4-nVlemEE/TV4OVdiinmI/AAAAAAAABi0/YX7yumiqYIo/s640/IMG_0232%5B1%5D.JPG)

(https://lh5.googleusercontent.com/_rX4-nVlemEE/TV4OV127LzI/AAAAAAAABi4/K61b5400Puc/s640/IMG_0233%5B1%5D.JPG)

and the horrid dremel job!
(https://lh6.googleusercontent.com/_rX4-nVlemEE/TV4OWMc7gWI/AAAAAAAABi8/aavtQvjDXDQ/s640/IMG_0234%5B1%5D.JPG)

(https://lh5.googleusercontent.com/_rX4-nVlemEE/TV4OXFYiAhI/AAAAAAAABjA/PjVi4V1IGJ8/s640/IMG_0236%5B1%5D.JPG)

stem with the race out
(https://lh5.googleusercontent.com/_rX4-nVlemEE/TV4OXjL0bpI/AAAAAAAABjE/YPIW-q8PlXY/s640/IMG_0237%5B1%5D.JPG)

(https://lh4.googleusercontent.com/_rX4-nVlemEE/TV4OoK8BnvI/AAAAAAAABjQ/Vdc7kf-uB3U/s640/IMG_0239%5B1%5D.JPG)

new race installed
(https://lh5.googleusercontent.com/_rX4-nVlemEE/TV4OoaHV_9I/AAAAAAAABjU/1_cTvoD2Pk8/s640/IMG_0243%5B1%5D.JPG)

(https://lh3.googleusercontent.com/_rX4-nVlemEE/TV4OoxKpW9I/AAAAAAAABjY/7YR6vvCuHfg/s640/IMG_0244%5B1%5D.JPG)
Title: Re: How to ruin a frame trying to remove stem races
Post by: WIFJ1287 on February 19, 2011, 05:10:57 AM
Next time try this first.
Get your self a can of freeze spray and try to shrink those as much as possible
and punch out the one with a rod. The other may just pry out after you
freeze it.

oh I just caught the thread on this..so...nevermind..looks like your all set.
Title: Re: How to ruin a frame trying to remove stem races
Post by: Mark Olson on February 19, 2011, 02:01:54 PM
hit it with some heat then spray the race with freon . boing boing boing , thats the sound it makes as it rolls across the floor.
Title: Re: How to ruin a frame trying to remove stem races
Post by: racerman_27410 on February 19, 2011, 08:33:00 PM
Quote from: Mark Olson on February 19, 2011, 02:01:54 PM
hit it with some heat then spray the race with freon . boing boing boing , thats the sound it makes as it rolls across the floor.


Great minds think alike eh ?

worked a treat on mine  :good2:


tip....hold the can of freon upside down so it sprays the supercold liquid refrigerant (wear gloves)


KOokaloo!


Title: Re: How to ruin a frame trying to remove stem races
Post by: Mark Olson on February 19, 2011, 10:29:53 PM
deminimus maximus  :rofl:
Title: Re: How to ruin a frame trying to remove stem races
Post by: Kopfjaeger on February 19, 2011, 11:15:10 PM
is it not possible to use a pin punch? and drive the lower bearing half out from the top? :scratch_one-s_head:
Title: Re: How to ruin a frame trying to remove stem races
Post by: simi_ed on February 19, 2011, 11:16:37 PM
No.  No lip to catch the pin punch on.  BTDT, no success.  Grinder or welder only.
Title: Re: How to ruin a frame trying to remove stem races
Post by: Kopfjaeger on February 20, 2011, 02:54:12 AM
bugger!!! kinda pleased i bought my bearings and went.." here. fix it" :good2: you might be able to reclaim some of the bearing surface.... loctite quick steel press fit might do it. but im gathering youve already put it all back together...
Title: Re: How to ruin a frame trying to remove stem races
Post by: Pat Conlon on February 21, 2011, 01:28:21 PM

You HVAC weenies, I hope you used R-12 so you could really fuck up the ozone layer...you big galoots  :biggrin:
I'll think about you spraying that toxic shit while I'm at the dermatologist tomorrow getting shit cut off my white Irish skin....

Quote from: racerman_27410 on February 19, 2011, 08:33:00 PM
Quote from: Mark Olson on February 19, 2011, 02:01:54 PM
hit it with some heat then spray the race with freon . boing boing boing , thats the sound it makes as it rolls across the floor.
Great minds think alike eh ?

worked a treat on mine  tip....hold the can of freon upside down so it sprays the supercold liquid refrigerant (wear gloves)
Title: Re: How to ruin a frame trying to remove stem races
Post by: andyb on February 21, 2011, 01:33:14 PM
Any can of compressed air will do the same thing. Upside down they shoot liquid, makes cooling stuff very easy.
Title: Re: How to ruin a frame trying to remove stem races
Post by: Mark Olson on February 21, 2011, 02:01:30 PM
Quote from: Pat Conlon on February 21, 2011, 01:28:21 PM

You HVAC weenies, I hope you used R-12 so you could really fuck up the ozone layer...you big galoots  :biggrin:
I'll think about you spraying that toxic shit while I'm at the dermatologist tomorrow getting shit cut off my white Irish skin....

Nahh, R-12 is too expensive to waste on that, use the new ozone friendly Puron.

You live in the desert , with all those a/c units running I bet you got your own hole in the ozone by now. :wacko3:
Title: Re: How to ruin a frame trying to remove stem races
Post by: WIFJ1287 on February 21, 2011, 06:59:17 PM
Haha...SPF 100
Title: Re: How to ruin a frame trying to remove stem races
Post by: FJmonkey on February 21, 2011, 07:03:36 PM
Quote from: WIFJ1287 on February 21, 2011, 06:59:17 PM
Haha...SPF 100
CRAP!!! now it sounds like new oil thread....bugger me dead....Oh, I thought it was SAE 100, never mind..... :sorry:
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