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C40 Seatpost fit(20 posts)

C40 Seatpost fitflybyvine
Jan 28, 2002 6:36 PM
I have just take delivery of a beautiful GEO C-40 (say waht you want about the paint job). First attempt to fit the seatpost and no luck - tight as hell. Anyone have a quick fix ? I have heard not to put lube on a carbon seatpost - do I sand the post back (ruins the finish) or try & use some sand paper on the inside of the lug ?

The carbon fork required a once over with sand paper in order to get the King HS on.

Jan 28, 2002 9:21 PM
My last C40 build I had to lightly wet sand the seat post. I also honed the seat tube with a brake cylinder honing set. The post was still tight as hell!!!! You can get the brake hone deal at any auto parts store.... it goes in a drill motor. BE CAREFUL!!!

BTW: My GEO CT1 will be at my door tomorrow!!! :-)

Good luck with your build
Jan 28, 2002 9:42 PM
Thanks, I was not about to take to something this expensive with anything destructive without seeking advice first.

BTW, I thought the GEO scheme was very orange in the photos but it came out as a nice mix of gold, orange & Blue.

I love the Red, White & Green Italy !!

seat postHENRY K
Jan 29, 2002 3:46 PM
Wouldn't it be safer to sand down the seatpost instead of reaming out an expensive frame?
You're NOT reaming out the frameCT1
Jan 30, 2002 6:59 AM
The brake hone is ONLY intended to remove burs and such.

A $4,000 frame and you have to ream the seat tube?JS
Jan 29, 2002 8:53 AM
What the heck is that? If this were a TREK or Cannondale people would be going on about how "that's what you get for buying those crappy frames". But it's a Colnago so it's "part of the mystique".
that's what you get for buying...More Like
Jan 29, 2002 9:09 AM

Besides, you buy a Trek or Cannondale and the post is already jammed in there!
that's what you get for buying...flybyvine
Jan 29, 2002 9:29 PM
Actually bought from LBS (would sourced direct from Italy) but I enjoy the build up myself. I expect that they would just jam it in anyway.

I agree that it is not what you would expect from a bike of this value but it doesn't sound uncommon for many Carbon frames. I ended up taking to the post & not the frame. I think that it was the post that was at fault because once I got it past 2" (the lug which I expect is a slightly finer tolerance that the Seat Tube) it freed up considerably.

Go to agree that the Trek's are probably better value & manufacturing quality but what the hell.. My old Alfa GTV was built like a piece of sh@t (compared to a Honda) but sure was fun to drive.

that's what you get for buying...CT1
Jan 30, 2002 7:03 AM
These follow up posts are pretty funny. I'd just ignore these ahole flamers.

I've probably built WAY more bikes than these poseurs have ever even ridden. ALL frames (INCLUDING DALES) have fitment issues.

a good LBS would prep the frameset(nm)
Jan 30, 2002 9:22 AM
Getting what you pay for...kevinpmac
Jan 31, 2002 11:05 AM
Your LBS is supposed to completely prep the frame for you. That is part of their dealership agreement with Trialtir.

Any bike maker can provide a frame that the seatpost easily slides into out of the box. Let's see them make something that rides like a C40. Therein lies the real challenge!
C-40 rides no better than a Trek 5500 , no better whatsoeverJohnT
Feb 1, 2002 6:53 AM
and it isn't nearly as good as a Calfee Tetra which puts both the Trek 5500 and the C-40 to shame.

C-40 has a nice paint job and very mediocre build quality for the price. Colnago has had huge problems with aluminum lug failures on that bike. I love watching the Coly lovers get so defensive though, its good fun.
C-40 rides no better than a Trek 5500? Perhaps in your dreamsErnesto Colnago
Feb 1, 2002 3:49 PM
Obviously you have no clue as to construction, build quality, or ride quality of a C40.

Ride the other two until your heart's content. Some of us are a bit more in tune with the bike we ride.

You must be confusing C40 for a different bike, No alum lugs here. Only carbon, no bondo.
C-40 rides no better than a Trek 5500? Perhaps in your dreamsStormbird
Feb 2, 2002 5:55 PM
Obviously you have no clue as to construction and build quality. Both Trek and Colnago carbon fiber frames are an utter joke when compared to Calfees. Calfee is the only manufacturer which uses high compression epoxy injected gusseting technology at their joints to provide the best road feel carbon framed bike on the planet.

Trek and Colnago use ancient tubes and lugs for their carbon frames as if they were mimicking the construction of a steel bike. Anyone who understands CF technology knows that when you lug a carbon frame you kill a lot of the materials inherent strength, create weak spots at the lug locations, and lose road feel.

Colnago and Trek CF bikes are like ancient dinosaurs compared to Calfees and all those who really understand CF bikes know this. I laugh at all those guys who paid over 4K for a whacky paint job on a Colnago when they could have spent less and had a Calfee Tetra Pro which puts the C-40 to shame as far as ridability is concerned.
Thanks for the humorous post.... I needed a good laugh! ... nmCT1
Feb 3, 2002 2:05 PM
Fact & Fiction.grzy
Feb 4, 2002 6:44 PM
Ah, but the Calfee really is lugged technology - you sound like you've been reading to many brochures. The tubes come from another vendor and they form an external lug to capture the tubes - visit the factory in Santa Cruz and see for yourself. Ultimately you're still taking tubes and sticking them together. If you really understood composite technology you appreciate true monocoque construction such as found in a Kestrel. Visit them down the street from Calfee in Watsonville. Composite bikes still ride like composite bikes - all of them.
A $4,000 frame and you have to ream the seat tube?kentuckyjoe
Jan 29, 2002 4:11 PM
ill second that comment,check out the crap somebody posted about my bike in the photogallery,its the red cannondale 2nd pic in the top row.My seat post fit great:) Later,Joe
ROTFLMAO @ ColnagoStormbird
Feb 2, 2002 6:00 PM
Only Colnago would send out a $4k bike with a seatube which needs reeming. They have produced ridiculously overated crap for a decade now, living off some past reputation of quality. About the best thing you can say about their overated crap is nice fancy paint job. Suckers are born everyday. LOLOLOLOLOLOLOLOLOL
spray some teflon dry lube on it nmDog
Jan 29, 2002 7:41 PM
Gotcha there dude!liu02bhs
Feb 1, 2002 7:24 PM
Hey, they got you on the alumninum lug thing. Last time I checked they uses carbon lugs. But they are the ones paying nearly $4000 for a frameset. Next time, be sure to say hello when you pass them up on your "cheap" bike.