Saturday, April 05, 2008

The Cruiser is Alive, mostly

This bike is ridable if the seat height is exactly what you need, because the seatpost is stuck.

I've sprayed WD40 in the seat tube several times, but it hasn't budged. Today, I bought a can of Liquid Wrench. I've sprayed that in there a couple times today. The seat post hasn't budged yet.

Do you have any recommendations for a next step? I'm trying to do the least damage to the frame as possible. I think the last resort will be to heat the seat tube with a torch. I'm looking for recommendations for "in-between" steps.

The photo does not show it, but the seat tube is slotted in the front and back. This makes a nice entry point for the Liquid Wrench, I hope.


Frostbike said...

That thing looks sweet. I hope you get the seat post figured out, it looks like a fun ride.

Unknown said...

Alloy post?
Chop horizontal, then poke hacksaw blade down into post and slowly slot seat post.

this verdant country said...

Alloy, HA! You could always clamp the post in a vice and twist the whole bike. That always works sometimes. Then you'd need a new post.

Reflector Collector said...

Remove the crank and add your liquid penetrant through the bottom bracket with the frame upside down. This should allow you to attack it from both ends.

You can remove the saddle from the post. Tap on the end of the post to force it INto the frame. This might allow you to break it free.

Jim's idea of clamping the post in a vice and twisting the whole frame may work. The old 13/16ths posts are mild steel and will break and bend easily so be careful.

lemmiwinks said...

As always, Sheldon has the answer.

rigtenzin said...

Thanks for the ideas. I hadn't looked at Sheldon's site and as usual, it contains exactly what I wanted: a guide to getting the seatpost out without resorting to the extremes first.

I don't care if I ruin the steel post.

Matt_J said...

Wow, Sheldon is the man with the plan.

Cool the post, heat the tube.

red rabbit said...

Kudos to Sheldon!

That sounds much better than my idea of filling a pair of your wife's old pantyhose with lube and let it slowly and steadily coat your post from the top...that sounds really wrong, but I can't help myself : )

Antonious said...

Patience, and penetrating oil. Leave the seatpost clamp off too. Like Reflector said, attack from both ends. I knowingly bought a $5 Rollfast frame, with pipe-wrench marks already scoring the seatpost. Every coupla months (patience), I'd have a spare moment, stick the flattened end of the post in a vice, and use the frame for leverage. And one day, thunk! it broke free.

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