AdventureManCO 

You know, I didn't even try! At this point, it is principle.

Kabuki12

Yea, again , if it was forced in AND oxidized or rusted to boot , I’m not sure the juice will help much . You sure have your work cut out for you. Just think of the elation when you finally get it! Whenever I ride the bike I mentioned earlier with the stuck stem and seat post , I remember the work I put into getting it on the road….kind of makes the ride that much more enjoyable. That , plus the original price of $20 !

Mad Honk 

I am likely not the best resource for removing stuck parts. But I have tried Acetone/ATF with good results on a 50th Paramount, and paint damage on an Terry from the lye process. The lye caused a $200 paint job so I don't favor the process. When destructive processes occur I am a big fan of using a pin through the post with a socket specially made to fit over the post and am impact wrench. After that a slicing through the seat pillar with a long blade using a Saws-All and pulling the pillar apart bit by bit from within the tube. Lye is my least favorite method. Smiles, MH

1simplexnut

Having a quiet giggle at the "grossy black '' and the toe "stlaps"

Schweinhund

Lye is one of those things that should be used only as a last resort. Get it on your skin, and it just feels slick, you wouldn't know it's eating your skin. Fail to neutralize it and you'll probably regret it.
I would think muriatic acid would be a less destructive option.
It works pretty quick too.
read about it.
https://sciencing.com/clean-rusty-st...d-8319296.html

greenscobie86

Nice find. Don't know much about these bikes but it looks like a real nice steed.

A small piece of advice regarding your stuck seatpost dilemma. If you're going to sacrifice the seatpost, you can cut the top clamp portion with a hacksaw, drill it out with a unibit, then use the hacksaw blade to CAREFULLY cut it apart from the inside out. I did this to a Trek 520 I was restoring a few years ago. Required no lye/chemicals/etc on a hopelessly stuck seatpost...

RustyJames 

I could search but I’m lazy - has anyone used a slide hammer? Unless it was huge it might not give enough oomph but I thought it was worth asking

I’m lucky because penetrant, time and mild coaxing has always worked for me.

AdventureManCO 

I remember using a slide hammer on my Ironman with it's stuck post. I think I used the bigger 5lb one I rented from the auto parts store. Did nothing, unfortunately.

Tonight, I will attempt to drill and pin, but definitely soak.

AdventureManCO 

This is awesome, and I admire the brave folks that do this but I just can't. I'll have nightmares about sawing right through the steel!

AdventureManCO 

You know, I read up on the lye treatment before attempting it on my Ironman, and yeah you get that Fight Club scene stuck in your head and its just 100% death. But! I did take good precautions, and had no issue. If I remember correctly, I even had little droplets get on my arm (since I did the treatment probably about 10x on the IM) and it didn't really bother me. Either my ratio was way diluted, or I have dragon skin? I dunno. I'm not gonna be dumb, def long sleeves, eye protection, etc. I have a good respect for it but I'm not scared of it.

AdventureManCO 

Okay, so I got the hole drilled for the pin and a pin inserted, so I can use either the head of the post or the pin itself to gain leverage for twisting (and shouting).








You can see from these pictures that it looks as those the seatpost (possibly too big) is causing the seat tube to bulge slightly were the post terminates. While this sucks, it also looks like there is not much post actually in the tube, which is good!







The Huffente took quite an interest in the torture and was there to supervise, as well as give approval for the generous amount of JB Weld used to seal the pin, should it come to the bloodletting (lye).








On a separate note, this was the first time I was able to really see underneath the bike, and I saw this lovely beauty mark -






It seems pretty deep! Aren't chainstays supposed to be pretty high-stress? Let me know y'alls thoughts on whether or not this needs addressing. I don't know how thick the chainstays are, but on a bike like this, I'd imagine not very. Then again, plenty of bikes have suffered from nasty chain suck on the DS chainstay and I can't really remember seeing any trends of the stays failing from it. Maybe these tire rubs are the same, but this looks more like heavy duty rim rub!


This stuff used to really bother me, and prior to the Huffy project such a finding would totally dishearten me, but now it’s just sort of like ‘Oh. Oh well!’

But I will repair it if need be. A good excuse to pull out the torch and burn up a nice bike!

Insidious C. 

Yes it does look deep. Me, I would paint that spot and ride it.

Mad Honk 

Muriatic acid is even more destructive than lye. It will eat through the steel tube. I would think cudak888 would chime in on this. If I am remembering correctly he managed to eat the threads right off of a steering tube using the acid. Smiles, MH

albrt 

This really looks like a good candidate for cutting, especially if the post is short. dddd is the expert, but the main point is that a saw blade can't really get any purchase on the smooth inside of the tube. As long as you're careful not to get the teeth engaged with the edges (top rim or slot) it's pretty hard to do any damage to the interior of the tube.

Wrenching hard on the already stretched top of the seat tube seems more dangerous than cutting.

Schweinhund

I can neutralize acid easily, and Muriatic acid is a dilute form of hydrochloric acid.
Lye is nasty stuff. had some bad experiences with it. It'll eat metal too, as well as human flesh, bones (ok, technically bones are metal) and fillings.

AdventureManCO 

Okay! Got the center section of the bike slathered in grease, and have the seatpost filled all the way up with ATF juice. About 15min in, I moved it to the vise and tried some gentle/moderate twist action. Nothing yet. We’lol see where we are at tomorrow. I’m willing to give it a week, but if we can’t free it, it’s the nuclear option.





I even used the hammer action of my impact as I was getting the juice in there. Giving it the best shot I can!

xiaoman1 

Well, bikes are great and all but, what's the story on the Porsche?
Best, Ben

mhespenheide 

Excuse me? Would you mind explaining that? Are you going by the idea that they're made of calcium and elemental calcium is a metal?

Kabuki12

perhaps we could start a club , Porsches and Pedals! There seems to be a few of us into the classic Porsche thing. I sold mine years ago but still look at the early ones.

cudak888 

Throw the gentle twisting out the window. Put the post in the vise, grab the seattube with one hand to steady the frame, the other on the headtube, and alternate pushing and pulling like an absolute madman.

Also, make sure to lubricate through the bottom bracket inverted. Trying to lubricate through the top isn't going to work; capillary action isn't going to pull it into the gap if/when it pops free.

-Kurt

Schweinhund

That's how my landlord the podiatrist and his buddy the orthopedist who put my ankle back together twice explained it.
Two doctors are wrong?

My left Achilles tendon has titanium thread woven through it too! ooh, bionic!

mhespenheide 

I only taught a year of high school intro chemistry once, but elemental calcium is an alkali-earth metal. Calcium in our bones is part of a mineral hydroxyapatitie, written Ca 10(PO 4) 6(OH) 2. The other dominant component of our bones are collagens. So they're really more of a mineral-matrix composite (more like carbon fiber!) than metal. I hope that's not bad news for the steel-is-real metal bike fans here!

Metals should be temperature-conducting, thermal-conducting, ductile, and malleable. Bones are not those things. (Sorry to be pedantic.)

AdventureManCO 

I have no idea how we got here, but here we are. And, if you recall anything from the Huffy thread, I'm in full support of any/all off-topic posts, as it adds to the post count!

cudak888 

♫ Post count, post count, Dave can't unstick his seatpost count. ♫

-Kurt

mhespenheide 

Sadly, my brain does not want to shut off and leave well enough alone. Even when I'm supposedly relaxing. That's how we got here.