Cyclops Seat Post NGC

[Kiwi_Roy]

A guy in my building has just picked up a Cyclops bicycle, quite a rare beast apparently.

The seat post is frozen in place I think it's an aluminum post in a steel tube.

Any ideas on how he can free it up?

Thanks
Roy

[Guzzistajohn]

In the us we have a product called pb blaster, it's a penetrating oil. Used it when I was a wheelchair tech. Chairs are exposed to some corrosive fluids I won't go in to. Usually an overnight soaking did the trick.

[Kiwi_Roy]

I guess I should have said i think it's a case of dissimilar metals, corrosion.

He can't apply heat, the special paint job is one of the features of this bike.

[RinkRat II]

 Well  Mr. Roy you can apply heat , just use a hand held hair dryer very carefully. A good penetrant first will no doubt be the ticket.  My personal favorite is a 50/50 mix of laquer thinner and ATF. Also remove the seat and lightly strike the seatpost while heating . Good Luck



    Paul B

[Triple Jim]

I wouldn't get lacquer thinner near a good paint job!

Aluminum expands with heat more than steel, so to get an aluminum seat post unstuck from a steel frame, ideally you'd cool it a lot.  Ice would do some good.  If you could get some dry ice surrounding it for a while, that could really help.

[bmc5733946]

Bikeforums.net.

Tons of information and he should be there anyway.  Great source of information on bicycles especially classic light weights.
There are many ways to remove stuck seatposts that will not damage a precious frame, patience is a key ingredient in virtually all of them.  I seriously encourage extensive reading before taking irreversible action.  Ben Franklin said "Experience is a dear school. A fool will learn in no other."  in other words, "do your learning from other's mistakes".

Brian