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Powder coating wheels
16 posts · Started by Superdan · 12 Feb 2008
Post 2 by Dr F,
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Post 3 by Superdan,
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Post 4 by Dr F,
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Post 5 by ShadeTheChangingMan,
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Post 6 by Superdan,
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Post 7 by Superdan,
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Post 8 by Dr F,
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Post 9 by Superdan,
#9Gun metal grey.....
To black...
Will post pics of the bad boy when I get them back from the shop after they put the tyres on..
To black...
Will post pics of the bad boy when I get them back from the shop after they put the tyres on..
Post 10 by Superdan,
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Post 11 by Superdan,
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Post 12 by ShadeTheChangingMan,
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Post 13 by jp5,
#13Time to fess up: I fookered the wheel trying to get the bushes out. Too much heat.
Using my homemade puller, I increased the heat in steps:
heat gun > negative
propane torch > nada
MAPP gas torch > zip
I then drilled a bunch of little holes in the rubber, then used a saber saw to cut through the remaining rubber to leave only the steel outer sleeve. I then went through the same sequence of heat sources, but this time I could use a pilot bearing puller on a slide hammer since the rubber was gone.
No joy.
Got pissed off and picked up the acetylene torch. Heated it up till the paint started to turn black. The sleeve I was working on still wouldn't budge; the jaws of the puller just tore/folded the steel sleeve and came loose. Repeatedly.
Got extremely pissed off.
I cut the steel sleeve out with the torch, no problem. I've done it many times before, cutting corrosion-seized bearing races out of various steel rollers & such.
Where I screwed up was in not letting the wheel cool off before starting on the second one. I ended up distorting the bushing bore. The wheel is certainly annealed or at least weakened in that spot. I don't trust it anymore.
This is my first expensive bike-related mechanical screw-up. Kinda ruined my day. A good example of my occasional tendency to be penny-wise and pound-foolish. I'm not sure how else one would go about removing them, short of having a machinist bore them out. I makes me wonder what kind of torture the powder coaters and such are putting the wheels through to remove them.
The silver lining: My wonderful wife says, "No sense beating yourself up about it. Just go ahead and order a set of new wheels."
Using my homemade puller, I increased the heat in steps:
heat gun > negative
propane torch > nada
MAPP gas torch > zip
I then drilled a bunch of little holes in the rubber, then used a saber saw to cut through the remaining rubber to leave only the steel outer sleeve. I then went through the same sequence of heat sources, but this time I could use a pilot bearing puller on a slide hammer since the rubber was gone.
No joy.
Got pissed off and picked up the acetylene torch. Heated it up till the paint started to turn black. The sleeve I was working on still wouldn't budge; the jaws of the puller just tore/folded the steel sleeve and came loose. Repeatedly.
Got extremely pissed off.
I cut the steel sleeve out with the torch, no problem. I've done it many times before, cutting corrosion-seized bearing races out of various steel rollers & such.
Where I screwed up was in not letting the wheel cool off before starting on the second one. I ended up distorting the bushing bore. The wheel is certainly annealed or at least weakened in that spot. I don't trust it anymore.
This is my first expensive bike-related mechanical screw-up. Kinda ruined my day. A good example of my occasional tendency to be penny-wise and pound-foolish. I'm not sure how else one would go about removing them, short of having a machinist bore them out. I makes me wonder what kind of torture the powder coaters and such are putting the wheels through to remove them.
The silver lining: My wonderful wife says, "No sense beating yourself up about it. Just go ahead and order a set of new wheels."
Post 14 by superdukegod,
#14dunno if it was just me but I all I saw when I read that was "Dymags"
Post 15 by Superdan,
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Post 16 by superdukegod,
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