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Old 02-13-2011, 10:48 AM   #76
Quasi1960
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Originally Posted by baldwithglasses
Could you heat the exterior race with your MAPP torch. You may have some success if you can drop some dry ice down the steerer tube. I'd think you want to take advantage of heat expansion/contraction.

Whaddya think?



Quote:
Originally Posted by Beater View Post
I went there ... didn't do the cooling bit tho. I'll give it a try ... the science seems sound ...

This reminds me of a friend who worked for Rolls Royce Aero Engines at Filton in the UK. He was giving a colleague a lift to work because the guy couldnt get spindle out of the front wheel of his bike. They had tried heating and cooling as best they could but it was stuck fast. After a couple of days the guy with the problem comes out of work holding his rucksack very carefully and said to drive home very carefully and avoid any potholes in the road. When they arrived at his house he asked my friend into his garage where the offending wheel was supported between two saw horses. Reaching into his rucksack he takes out his thermos and proceeds to pour the contents down the hollow spindle. Within seconds it fell to the floor. Liquid Nitrogen is wonderful stuff.
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Old 02-13-2011, 11:31 AM   #77
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In the base of my lower triple, there were two small holes opposite one another. After heating the race, an appropriate size drift was used to tap the race off. It only has to go about an inch. YMMV.
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Old 02-13-2011, 08:12 PM   #78
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While I REALLY wanted to try the liquid nitrogen route, I just couldn't make it happen.

So ... I simply removed most of the 'safety' guards, shields, and such from my bench grinder ... and went to town on it. I was able to expose the complete race to the wheel ... after about 5 minutes of grinding ... I heard a *loud* pop ... and I thought I had broke the cast aluminum triple ... but it turns out that the race was thin enough to fracture under the heat. Then it simply fell off the stem and onto the floor.

See the fracture? Cool, eh?


Next: The installation of a massive set of forks.
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Old 02-13-2011, 11:02 PM   #79
Quasi1960
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Quote:
Originally Posted by Beater View Post
While I REALLY wanted to try the liquid nitrogen route, I just couldn't make it happen.

So ... I simply removed most of the 'safety' guards, shields, and such from my bench grinder ... and went to town on it. I was able to expose the complete race to the wheel ... after about 5 minutes of grinding ... I heard a *loud* pop ... and I thought I had broke the cast aluminum triple ... but it turns out that the race was thin enough to fracture under the heat. Then it simply fell off the stem and onto the floor.

See the fracture? Cool, eh?

Next: The installation of a massive set of forks.

Who said violence never solved anything?
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Old 02-14-2011, 07:22 AM   #80
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nice job, Fred...

I can't remember how I got mine out. You putting the triple in the freezer? It helps.
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Old 02-14-2011, 03:06 PM   #81
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I actually had to do this today.....After fighting with drifts, cold chisels, slide hammers I eventually used a cutoff disk in the dremmel and went down enough to then use the small cold chisel and fractured the race. I somehow ended up breaking a side reflector though.....

Lacking a welder in the shed and refusing to by a bucket of hardware for $40 from airhead tool suppliers I just left the outside races in place. The new bearings work well in them with no notchiness so in they stay.
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Old 02-14-2011, 03:55 PM   #82
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If you're talking about the outer races in the steering neck of the frame, you can get them out easily with a pair of holes drilled 180 degrees apart and a suitably sized drift or prick punch.

Seal the drilled holes from the outside with a dab of silicone if you're concerned about the new bearings becoming contaminated.

It's not generally considered good practice to mix old and new bearing surfaces. Tolerances and machined surfaces on modern production bearings are quite remarkable. One of the wonders of modern mfg'g.

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Old 02-14-2011, 07:43 PM   #83
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Quote:
Originally Posted by hardwaregrrl View Post
I can't remember how I got mine out. You putting the triple in the freezer? It helps.
The triple went in the freezer the moment the race fell off. Today went to Chattanooga with the fam ... Rock City, and Ruby Falls ... then dinner near the aquarium. Loads of fun ... little girls screaming ... huge fun.

But on return to the house ... the post man brought me a present. Check out the Renthal bars.


Next: Installation!
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Old 02-14-2011, 08:09 PM   #84
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That's some serious offroad machinery. You'll need harcore riding gear that suits this beast. How about we draw Fox logos on a t-shirt with some markers?
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Old 02-19-2011, 05:39 PM   #85
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Slowly but surely ... progress is being made. Promise. The triple is on. New bearings. A few extra washers.

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Old 02-19-2011, 05:42 PM   #86
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That lower is on right? seems like negative offset from the photo, heh
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Old 02-19-2011, 05:42 PM   #87
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Am I just a Wacky Bongo Boy, or is the lower on backwards?
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Old 02-19-2011, 05:44 PM   #88
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Am I just a Wacky Bongo Boy, or is the lower on backwards?

BOOM you owe me a beer.
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Old 02-19-2011, 05:44 PM   #89
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BOOM you owe me a beer.




Edit: Yeah, I guess it's on correctly. The stops wouldn't work the other way. Freaky..
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Old 02-19-2011, 05:49 PM   #90
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That's a riot. Luckily the lower triple came pre-assembled ... so the steer tube only went in one direction. Because I would have MADE that mistake.

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