Quantcast

carbon grease

jonKranked

Detective Dookie
Nov 10, 2005
85,573
24,190
media blackout
is carbon grease required for carbon - alloy interfaces? (specifically alloy post in carbon frame). or is it only necessary in carbon-carbon interfaces? this is the first time i've owned a carbon frame and don't wanna mess it up until i take it into the sunlight.

also, brand recommendations?
 

canadmos

Cake Tease
May 29, 2011
20,192
19,158
Canaderp
What bike did you get?

I'm a total derp, but I think the carbon paste stuff adds friction. So that you don't risk over tightening the item to prevent slippage. Every post that I've had always says to use carbon paste.
 

jonKranked

Detective Dookie
Nov 10, 2005
85,573
24,190
media blackout
scott spark 620. 2013. was the last year it was made in 26". found a good deal (aka hella cheap) and can transfer everything over from my current bike.

fwiw i'll be using an alloy post in a carbon frame. i'm probably gonna give my joplin a proper service so i can run a dropper.
 

Westy

the teste
Nov 22, 2002
54,241
20,021
Sleazattle
I think carbon grease generally has glass beads or similar particles in it to improve clamping carbon to carbon surfaces.

A machined alloy post like a Thompson has good surface roughness that typically provides a good bite on carbon and does not need the friction grease.

Make sure your post has a good anodized surface to prevent corrosion, grease as usual.
 

maxyedor

<b>TOOL PRO</b>
Oct 20, 2005
5,496
3,140
In the bathroom, fighting a battle
FWIW on my Intense I had a severely seized seat-post because I put it in dry, after several days soaking it in PB Blaster and almost sending it to England to the only post removal specialist I could find willing to try, I got her loose. Called Intense, they said to use regular Park bearing grease, no slippage and no stickage since.
 

jonKranked

Detective Dookie
Nov 10, 2005
85,573
24,190
media blackout
FWIW on my Intense I had a severely seized seat-post because I put it in dry, after several days soaking it in PB Blaster and almost sending it to England to the only post removal specialist I could find willing to try, I got her loose. Called Intense, they said to use regular Park bearing grease, no slippage and no stickage since.
I talked to two friends who both still work at shops and they both said absolutely don't put them in dry. They both recommended carbon paste. Regular poly lube can affect the resin on the carbon.
 

Sandwich

Pig my fish!
Staff member
May 23, 2002
21,031
5,921
borcester rhymes
late to the party, but I used pork duhls carbon past to keep my shiny carbon post from slipping in my alloy frame.

I also have carbon bars and an alloy stem, but haven't needed it there yet. I think. Maybe. It's really only to limit slipping and rotating on carbon part inside alloy clamps, I thought. I would probably use it on carbon/carbon as well.
 

jonKranked

Detective Dookie
Nov 10, 2005
85,573
24,190
media blackout
Bump for a follow-up...

Metal bearings for pfbb getting pressed into a carbon shell. Googling turned up info from praxis works that recommended loctite superflex rtv silicone adhesive for the interface (instead of lube or carbon paste). Anyone else know if this is the best solution or is there something else I should use?
 

boostindoubles

Nacho Libre
Mar 16, 2004
7,839
6,145
Yakistan
Around here, it's a bit challenging, but people are using elf jizz. Catching the fuckers, getting them to give up the jizzums, and then getting those jizzums into a convenient squeeze bottle. Its not easy but the local KOM hunters swear by it. It turns out Elves have really sticky ejaculate. Engineers and scientists think the technology is going to help put people on Mars.
 

jonKranked

Detective Dookie
Nov 10, 2005
85,573
24,190
media blackout
Around here, it's a bit challenging, but people are using elf jizz. Catching the fuckers, getting them to give up the jizzums, and then getting those jizzums into a convenient squeeze bottle. Its not easy but the local KOM hunters swear by it. It turns out Elves have really sticky ejaculate. Engineers and scientists think the technology is going to help put people on Mars.
Most strava warriors I've met are content to just jack off to their bike on a scale but hey, I'm not one to judge. You do you man. Or an elf if that's your thing.
 

jstuhlman

bagpipe wanker
Dec 3, 2009
16,627
12,918
Cackalacka du Nord
sheesh. y u so worried aboyt grease? i just used a healthy shot or two of coppertone for headset, seatpost, bottom bracket and slathered the rest of the frame with it for good measure before hitting the whole thing with rattlecan clearcoat to seal it in.
 

DaveW

Space Monkey
Jul 2, 2001
11,161
2,685
The bunker at parliament
a google indicates both finish line and tacx are good pastes. have experience with either?
I use the finishline one in the workshop at my bike shop.
It's good.
Also if you're not used to a carbon bike..... or even if you are, get a preset torque tool set to 5nm that has interchangeable bits (3mm, 4mm,5mm,6mm,T25 etc) just a small one that can fit in your trail side repair kit.
I like the Birzman one at work and their multi tool that has it built in stashed in my hydration bag.
 

Westy

the teste
Nov 22, 2002
54,241
20,021
Sleazattle
To his credit, he was drunk both times and probably blacked out in between

That is why I only post while blacked out drunk. It is just kind of an alternate universe where time is contiguous, but offers an alternate plot.