liam.mccaffrey
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| posted on 8/2/09 at 01:30 AM |
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Linear Bearing
Can anyone think of a Locost way to get linear motion on a 1.75" diam steel shaft??
Could do a plain bearing in brass/bronze but anyone else think of anything else?
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nitram38
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| posted on 8/2/09 at 04:19 AM |
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How often is it going to be moved?
You could use a phosphor bronze bearing which are normally boiled in oil every so often to re-oil them or if it is low use, then a nylon bush with
grease.
I used steel rod ends on my gearshift but they kept on jamming. I changed to nylon rod ends (rs componants) and never had a problem after that.
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v8kid
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| posted on 8/2/09 at 09:40 AM |
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Good tip Nitram I have the same problem - parts now ordered from RS at an extortionate cost!!
Back to the original problem 2" abs class T pipe (high pressure thick walled) has a bore of slightly greater than 1.75".
Trouble is you can only buy it in 6m sticks unless you can perswade a friendly pipe installer to supply.
We use Fusion to supply pipe but do not use this size.
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NS Dev
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| posted on 8/2/09 at 09:45 AM |
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yep, linear ball bearing unit. we use them on shuttles on drill and peg machines at work, they last for ages (for ever on a car)
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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NS Dev
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| posted on 8/2/09 at 10:10 AM |
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wyco link here
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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Alan B
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| posted on 8/2/09 at 02:11 PM |
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Liam, how hard is the shaft? Those linear ball units are good but really must be used on hardened shafts. A composite lined linear bushing may be more
suitable.
Alan
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liam.mccaffrey
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| posted on 8/2/09 at 03:05 PM |
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its not for the car, and its a 1.75" CDS tube. It need not be heavy duty just quite tight/accurate and of couse Locot I have all the materials
for a plain bearing and might give it a go first. i might cut an oil goove internal also.
I'll let you know how it goes
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