When faced with a frozen seatpost or stem
is is easiest to remove with Coca Cola. Remove
the BB and invert frame. Remove pinch bolt for
seatpost. Tape around the seat cluster/post junction
to prevent Coke leakage. You need to pour one Coke,
reuglar in red can only, down into the seat tube of inverted
frame. Let sit for 24 hours. Dump Coke and repeat. This may
take up to 10-12 days but has never failed. Coke Red Can is
only one that works. NOT Pepsi, or diet or any sissy versions.
Each day while changing Coke try to twist the seatpost with
some cheap junk saddle on it. You may Kroil at this time from
the top but I have found Kroil to be fairly useless unless heat is
applied with propane torch. Once the offending piece turns at
all, keep turning and spray some Kroil in at that point. You may wish
to put post in vice and really hork on it if you don't mind ruining
the seatpost. Works same on stem with inversion, tape and loosen
any locknuts on headset and remove expander bolt/wedge and tape bolt hole
too.
One must be patient. I have had to pour Coke in through a water bottle
braze on before and that even worked after 10 days. If you are able to
change
Coke every 12 hours this will speed things up by about %30. This is all way
easier on a frame that is stripped of all parts except the stuck ones. Make
a cheap
rear end stiffener/bracket out of all thread with 4 nuts and 4 washers to
keep rear
dropouts from flexing about while getting neanderthal on it. %100 success
rate over
30 years.
P.S. Cutting out frozen Dura Ace BBs is another story and fugly compared to
Coke. We
see it all the time. Ditto frozen Campy BBs but that is mere flange/chisel
session to relieve
pressure and hork in a Tacx BB tool and they come right out. Nothing is
anything after you
done it a few times.
Joe Hughes
Denver, CO