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Aluminum Seat Posts in Carbon Frames

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Aluminum Seat Posts in Carbon Frames

Old 08-23-11, 06:20 PM
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markwebb
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Aluminum Seat Posts in Carbon Frames

I'll be putting together my new carbon bike tomorrow. The seat post is aluminum. Do I need to use any grease or??? on it? Or just insert and torque binder bolt to 4?
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Old 08-23-11, 06:32 PM
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No grease. No paste. Just ensure that it's the right size and torque the collar to the right value.
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Old 08-23-11, 06:44 PM
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You can use carbon paste...
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Old 08-23-11, 07:13 PM
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Originally Posted by rbart4506 View Post
You can use carbon paste...
+1.

Use the paste. There is no downside.
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Old 08-23-11, 07:24 PM
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I use carbon assembly paste on my seatpost, steerer/stem, and stem/handlebars, even though only the seatpost is carbon. It seems to increase friction and reduce slipping.
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Old 08-23-11, 10:54 PM
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You might want to pull it out and check it every once in a while. I had one that galvanically welded itself into my Trek 5200. The LBS had to put the seat post into a bench vise and have 3 guys torque on the frame to get it out.
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Old 08-24-11, 02:37 AM
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I use carbon paste. I also take it out every three months or so to clean and re-lube. So far, no issues at all to report.
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Old 08-24-11, 08:00 AM
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Yah, agree with the carbon paste. Great for any area where carbon bears on carbon, aluminum (scandium too), steel or titanium (and maybe bamboo as well ).
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Old 08-24-11, 09:26 AM
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I have a carbon bike with an aluminum seatpost and I used carbon paste.
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Old 08-24-11, 10:04 AM
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I used dry graphite lube. I had it on hand, so on it went. Wipe off excess.
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Old 08-24-11, 05:18 PM
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I did NOT use carbon past on my Tarmac/Thomson Masterpiece seatpost combo. Hasn't come loose, creaked, or anything.
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Old 08-24-11, 08:06 PM
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I went naked.
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Old 08-24-11, 08:14 PM
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I stuck my post in with no lube or protection. It's pretty rigid, so while the opening was a fairly tight squeeze, it went in no problem. Will have to work it in and out repetitively until I'm satisfied.
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Old 08-24-11, 09:08 PM
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Nope.

Cleaned the inside of the seatpost well before installing my Thomson Elite in my R3. Torqued to spec and never had an issue since building the bike last fall.
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Old 08-25-11, 07:10 AM
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CC - where I got bike - said naked is fine. So did the LBS's I consulted. They said use the paste if I get slippage but otherwise naked is good.
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Old 08-25-11, 08:05 AM
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Originally Posted by celticfrost View Post
I stuck my post in with no lube or protection. It's pretty rigid, so while the opening was a fairly tight squeeze, it went in no problem. Will have to work it in and out repetitively until I'm satisfied.
srsly?
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