Originally Posted by
CliffordK
My frame was made for a 28.0 seatpost which is a rather uncommon size. So, someone installed and shimmed a 27.2 post which apparently got stuck and broken.
Carbon + Aluminum is a bad mix, at least for seatposts.
Here is a discussion about Lye, Ammonia, and various solvents.
Corroded Seatpost Removal
I think the OP went with PB Blaster, but never reported back whether the frame was destroyed, or they got the post out.
Keep in mind that at least a little grease gets on CF without any damaging consequences.
Ok I'll look for the pb blaster and continue with the plan ,sounds similar to the one someone else has tried,,, thank you for all input ,,, we'll see what happens,,, there's always a hitch with the good deal only thing seller told me about it before hand and I made the decision to proceed with the good deal,