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PostPosted: Sun Nov 17, 2019 9:59 pm 
Retro Guru

Joined: Mon Jun 02, 2008 9:22 pm
Posts: 1444
Any tips for smoothing the inside of a seat tube thats scratching seat posts?


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PostPosted: Sun Nov 17, 2019 10:01 pm 
GOLD | PoTM | Rider | rBOTM
GOLD | PoTM | Rider | rBOTM
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Joined: Tue Feb 26, 2013 6:26 pm
Posts: 21166
Location: Northest North Yorkshire. whippet real good...
I use a half round file then wet and dry wrapped around it. Keeping it upside down so bits fall out.


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PostPosted: Sun Nov 17, 2019 10:01 pm 
King of the Skip Monkeys
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
Posts: 30948
Location: Crayon-Munching-Fart-Muppet
slightly smaller post wrapped in glass paper?

Round files?

Rockford Files?


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PostPosted: Sun Nov 17, 2019 10:04 pm 
Devout Dirtbag

Joined: Fri Sep 02, 2016 9:54 pm
Posts: 148
dremmel with a wire brush bit on


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PostPosted: Sun Nov 17, 2019 10:11 pm 
Dirt Disciple

Joined: Fri Mar 17, 2017 2:01 pm
Posts: 97
https://www.youtube.com/watch?v=xRIFqasCOSg&t=131s

By far the best way to go about it.

I use a mudguard stay that I've cut down on one side so one side is the full length and one side is about an inch long, I can tuck rags, scothbrite pads or abrasive papers into it depending on what I want to do. It won't quite reach all the way down to the bottom but it tends to be long enough to cover the portion of the seattube that you're actually using.


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 Post subject: Re:
PostPosted: Sun Nov 17, 2019 11:03 pm 
Retro Guru

Joined: Tue May 11, 2010 6:39 pm
Posts: 1070
Location: South Devon
Another vote for a half round file.


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 Post subject: Re:
PostPosted: Mon Nov 18, 2019 6:06 am 
Retro Guru

Joined: Fri May 15, 2015 4:57 pm
Posts: 2075
Best to be aware, however, that after all is said and done ... your seat-tube diameter will subsequently be slightly larger ... so you just may need to go up a smidge or two in seat-post size as well.

:idea:


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 Post subject: Re: Re:
PostPosted: Mon Nov 18, 2019 9:09 am 
Retro Guru

Joined: Tue May 11, 2010 6:39 pm
Posts: 1070
Location: South Devon
k-rod wrote:
Best to be aware, however, that after all is said and done ... your seat-tube diameter will subsequently be slightly larger ... so you just may need to go up a smidge or two in seat-post size as well.

:idea:


Not ime. Shouldn’t really need to remove that much metal to clean things up. Not impossible but...


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 Post subject: Re:
PostPosted: Mon Nov 18, 2019 10:51 am 
Old School Hero

Joined: Tue Jan 06, 2009 9:44 pm
Posts: 165
Location: bristol
You need a piece of dowel approx 600mm x 12mm dia , a strip of 25mm wide emery cloth ( medium grit ) and an electric drill

Cut a slot in the end of the dowel to accept the emery cloth and wind a short length ( 150mm ) onto the end

Fit the dowel into the drill chuck and insert your home made 'flap wheel' into the seat tube - switch on !

You can then use the dowel as a rotary file , pressing against areas of known corrosion or simply increase the drill speed
to open up the ' flap wheel ' and give an even finish all round

You could use ordinary aluminium oxide abrasive sheets , but the fabric backed emery cloth is much stronger/better


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 Post subject: Re:
PostPosted: Mon Nov 18, 2019 11:06 am 
BoTY Winner
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Joined: Thu Feb 19, 2009 12:36 am
Posts: 7196
Location: West Berkshire
Might be worth looking at?....

https://www.amazon.com/Brush-Research-1 ... B01M3UTKI4


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