I’ll save yall from a long winded story.
Serviced my seatpost and clamp Friday(carbon gen 1 trek speed concept). I have been slipping since.
Note on the slippage: the seatpost slips down AND the clamp migrates up. See photo 1 (after trial 1)
Trial 1. Carbon paste at aluminum carbon interfaces. Grease metal to metal
Called trek shop they said go bare at carbon aluminum interfaces and trial carbon paste if slip continues.
Trial 2. No carbon paste
Trial 3. Carbon paste at seatpost clamp
Trial 4. Carbon past at seatpost clamp and back of post
Trial 5. Piece of double stick tape in the seatpost wedge. (See photo 2) I did this because the bike shop that assembled this bike 12 years ago had done this.
Trial 5 was by far the most successful trial with the least slippage. Clamp still migrated a little and seatpost dropped 1mm/hr
Help resolving this is appreciated
by Intelligent_Income38
2 Comments
Do you have pictures of the inside of the frame where the clamp and seatpost go? I can’t figure out how this is supposed to work from this pictures. Also im pretty sure you can find all the manuals that exist for your bike on the trek website with the framenumber.
You sure it’s carbon assembly paste? With the sandy particulates? Why not use it everywhere? It’s also safe for metal.