phelpsa
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| posted on 25/10/12 at 08:54 AM |
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Reducing Tube OD
Sorting a better steering column with removable wheel over the winter. I have my 3/4" bearings and 3/4" tube, but for obvious tolerance
reasons one does not fit inside the other. I had hoped that a simple massage with some emery would be enough to sort it but it would appear not
without a few days work!
Anyone have any better ideas without a lathe? I have in the region of 0,10mm of material to remove on diameter.
[Edited on 25-10-12 by phelpsa]
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flibble
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| posted on 25/10/12 at 09:26 AM |
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I'd probably go at it with a fine flap disk, depends if you mind a bit of a bodge! (I don't  )
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ashg
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| posted on 25/10/12 at 09:34 AM |
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Why bodge it? I can turn it down for you if you want to send it to me. Or I'm sure another more local lcb with a lathe will offer to do it for
you for a beer.
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
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loggyboy
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| posted on 25/10/12 at 09:47 AM |
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only 0.1mm needed?
Use course sand/oxide paper to loose most of the material, then grade doen through various papers till its smooth.
Are you trying to reduced the shaft outer dia or increase the bearing inside dia?
Mistral Motorsport
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designer
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| posted on 25/10/12 at 09:52 AM |
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quote:
I have my 3/4" bearings and 3/4" tube
Are you sure? A simple rub with wet and dry would soon make it fit.
Are you doing it right?
Second column five from bottom: http://www.shedworks.eu/hints.html
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phelpsa
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| posted on 25/10/12 at 10:23 AM |
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It's probably down to the quality of paper I'm using in that case. Will give it another go with some better stuff.
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Jasongray5
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| posted on 25/10/12 at 10:24 AM |
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Some percussive persuasion will do it!
Agricultural bearings are like this, you usually have to cut them off, and press/hammer them onto shafts.
Jason
How hard can it be?
http://www.flickr.com/photos/33261515@N03/sets/72157611049241239/
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TimC
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| posted on 25/10/12 at 12:25 PM |
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Freeze the inner and heat the outer?
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Bizarro
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| posted on 25/10/12 at 01:59 PM |
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+1
Put the bearing in the oven at about 100 for around 10 minutes, it'll slide on easy.
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phelpsa
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| posted on 25/10/12 at 04:37 PM |
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Due to the bearing location, interference fit isn't really an option (I had thought about it previously). I've got a plan to bring the
tube back to uni to use a lathe and some w&d now. Thanks for the input guys.
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