You are not logged in.

35 Year Old Stuck Post

#1 2011-03-29 1:15pm

mongoosedrummer
Expert
From: Twomey, TN
Signed up: 2008-01-02
Posts: 787
Bikes: 13
Offline

35 Year Old Stuck Post

It's sort of pathetic in a myopic collector kind of way, but I can't seem to pass up on any 1976 Mongoose frames that cross my path. No matter how many I acquire, I never seem to get sick of having them. Not only do they instantly transport me back into the most impressionable period of my early BMX days, but I also truly believe they are one of the best designed frames ever made.

When we consider the fact that so many of these old Geese still live on today and rarely have any major structural damage to them, it's a real testament to their awesome design and incredible workmanship. I've owned a few other frames from that same era and they often have serious and consistent flaws that leave them inferior to the older Mongoose frames by comparison in my opinion. Redline Squarebacks for example (which I also really love), almost always have seriously bent and/or splayed rear drop outs and Webcos (which I love as well) just cannot compare to the Geese when it comes to their inferior bubble gum welds. In fact, I'm somewhat afraid to jump on my Webcos for this very reason, but I have no qualms with launching my 47 year old ass into the air on any of my old Mongoose bikes. They just feel totally reliable to me and have yet to fail.

When I came across this '76 Mongoose frame recently, I was pretty stoked. This one still had it's original decals which were in fairly good shape (one of the more difficult things to find on the old Geese frames) and as per usual, it had no structural damage at all.

The only problem with this one was it had the dreaded stuck post. To be more precise, it was actually the remnants of a stuck post that looked to have been sawed off and bashed down. I've dealt with stuck posts before (as we all have) and it can often be a deal breaker for me especially when the posts are aluminum. For some reason, when aluminum posts are left long enough in steal frames, they can actually bond at a molecular level and become one with the frame. This is the worst of all the possible scenarios. No amount of insane twisting, dry ice, PB Blaster or blow torching (which is the worst thing) will unseize the post. Often the only option (other than surgical cutting and filing inside the post - which is a massive pain in the ass) is to have them drilled out by a machine shop (unless you have the tools yourself to do this - which I do not). Sometimes, the drilling process can go wrong and the actual seat post tube of the frame can be damaged. This actually happened to me once... I ended up having to have the frame repaired and welded. I vowed to never go through that again...

Long story longer, I took a chance on this frame, because: 1) I just cannot pass up on '76 Mongoose frames, as I've said and 2) back in 1976 there didn't seem to be a lot of aluminum posts being used yet, so I figured there was a good chance this bitch woud be steel and I was right... Thankfully.

I used a pretty standard old trick to get this sucker out and thought I might document the process here for those who haven't tried this method. It doesn't always work (especially with aluminum posts as I mentioned), but more often than not, it does.

The frame as I received it:

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01683.jpg

Hard to resist doing a little test patch with Mothers... This baby is going to totally rock when I go all out!

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01706.jpg
http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01707.jpg

Onwards to the examination of the offending sawed off and bashed in post:

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01746.jpg
http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01747.jpg

Even this bolt fought with me for a nano-second... Clink!

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01750.jpg

Off you go...

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01751.jpg

Slowly spread and remove...

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01752.jpg

Fully exposing the problem...

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01733.jpg

Insert stem and bars, tighten up, secure frame and slowly twist bars back and forth... Clink!

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01754.jpg

Get lost sucker!

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01735.jpg

Breath again my lovely little mast!

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01755.jpg

A little more love with some Mothers...

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01768.jpg

Trying out the new post... In and out, smooth as butter baby!

http://i253.photobucket.com/albums/hh73/mongoosedrummer/DSC01757.jpg

Problem fixed, onwards with the rest of the project.  :OSThumbsUpPeace[1]:


A "Squonk" is like a Mongoose only much harder to find...

Offline

 

#2 2011-03-29 1:39pm

carbons2k
99%er
From: Long Island, NY
Signed up: 2010-05-27
Posts: 1917
Bikes: 6
Offline

Re: 35 Year Old Stuck Post

awesome! lets see more clean up pix


house fund: A soggy biscuit.

Offline

 

#3 2011-03-29 1:40pm

RandolphCarter
WAYYYY in the black
From: Round Lake, NY
Signed up: 2010-12-12
Posts: 2223
Bikes: 12
Website
Offline

Re: 35 Year Old Stuck Post

Nice!

The chemical bond between aluminum seatposts and steel frames can sometimes be disrupted with ammonia- it worked for me.

Did you grease up the seat tube good before you installed the post?


Labor creates all wealth.

Offline

 

#4 2011-03-29 2:32pm

mroze1
Pro Member
From: -
Signed up: 2008-09-12
Posts: 1119
Online

Re: 35 Year Old Stuck Post

-

Last edited by mroze1 (2021-08-09 2:21pm)

Online

 

#5 2011-03-29 2:38pm

mongoosedrummer
Expert
From: Twomey, TN
Signed up: 2008-01-02
Posts: 787
Bikes: 13
Offline

Re: 35 Year Old Stuck Post

Someone else mentioned to me on another site that it might have been a shim... I'm not sure exactly what it was, but I'm not too familiar with the use of shims for seat posts. Whatever it was, it was stuck and super rusted. I didn't notice any slits, before I tossed it. I just figured it was an old piece of the original post that had been sawed and bashed down. Anyhow, it was nice to get that sucker out.


A "Squonk" is like a Mongoose only much harder to find...

Offline

 

#6 2011-03-29 2:44pm

george b
Centurion Member
From: Houston, TX
Signed up: 2010-12-28
Posts: 144
Bikes: 4
Offline

Re: 35 Year Old Stuck Post

mroze1 wrote:

Should have seen the 7 inches of insertion length I had to deal with!

..  and i'll just let it go without making a joke.  big_smile

Offline

 

#7 2011-03-29 3:15pm

mroze1
Pro Member
From: -
Signed up: 2008-09-12
Posts: 1119
Online

Re: 35 Year Old Stuck Post

-

Last edited by mroze1 (2021-08-09 2:21pm)

Online

 

#8 2011-03-29 4:33pm

bird
R.I.P
From: 2015 Stanley Cup Territory
Signed up: 2008-10-20
Posts: 4192
Offline

Re: 35 Year Old Stuck Post

thanks for sharing


44T CHICAGO CLUB RIDER
WANTED::::anything reynolds racing
WANTED::::bandito jersey
WANTED::::yellow panaracer tire 1 1/8
WANTED::::jmc pit bike
WANTED::::less talk,more riding

Offline

 

#9 2011-03-29 4:43pm

its-all-good
Pro MemberDon't Cheers Me Bro
From: In The Numbers
Signed up: 2007-02-14
Posts: 36497
For Sale: 141
Website
Offline

Re: 35 Year Old Stuck Post

mongoosedrummer wrote:

Someone else mentioned to me on another site that it might have been a shim... I'm not sure exactly what it was, but I'm not too familiar with the use of shims for seat posts. Whatever it was, it was stuck and super rusted. I didn't notice any slits, before I tossed it. I just figured it was an old piece of the original post that had been sawed and bashed down. Anyhow, it was nice to get that sucker out.

Yeah, just was just a shim and not a seatpost.

Offline

 

#10 2011-03-29 4:57pm

TuRBo Todd
Pro Member
From: W. MI, Azusa and Secret Cycles
Signed up: 2008-11-20
Posts: 2419
Bikes: 13
Offline

Re: 35 Year Old Stuck Post

cool frame and yeah, it's a shim. That's why it had a lip on the edge.


Founder/Owner, Azusa & Secret Cycles.

Offline

 

#11 2011-03-29 5:20pm

mongoosedrummer
Expert
From: Twomey, TN
Signed up: 2008-01-02
Posts: 787
Bikes: 13
Offline

Re: 35 Year Old Stuck Post

Yes, I think I made a mistake on this one. Seems it was a shim, not a sawed off chunk of old post as I originally thought. It's the first one I've ever come across... Regardless, I'm glad I removed that piece of crap. cool


A "Squonk" is like a Mongoose only much harder to find...

Offline

 

#12 2011-03-30 7:44am

zombie_jesus
Google Me, B*tch
Signed up: 2010-09-06
Posts: 2020
Offline

Re: 35 Year Old Stuck Post

nice job. now, let's see s'more o dat bike...


#TeamGeiger

Offline

 

#13 2011-03-30 8:11am

MotoMagMatt
"Old School or No School"
From: Minnesota
Signed up: 2009-03-23
Posts: 2731
Bikes: 13
Website
Offline

Re: 35 Year Old Stuck Post

Great frame Pete! Nice save...  cool


I'm always looking for early Mongoose frames with the lower gusset, 75-76 or early 77. And anything Ashtabula!!!
ALWAYS LOOKING FOR OG SCRAMBLERS.
SEARCHING FOR A PRE-1983 SCHWINN SCRAMBLER THAT WAS PURCHASED FROM THE OUTDOOR STORE IN RED WING,MN THAT STILL HAS THE OUTDOOR STORE STICKER ON IT. ANY COLOR COMBO WILL DO.

Offline

 

#14 2011-03-30 8:18am

MADDAWG
BMXer 4 Life
From: Midwest
Signed up: 2008-02-14
Posts: 5227
Bikes: 16
Offline

Re: 35 Year Old Stuck Post

cool


.                       IL/WI Border area O.G.O.A.R.                            
                                         
                     

      Rule #9 :If you are out riding in bad weather, it means you are a badass. Period.

Offline

 

#15 2011-03-30 9:31am

butlerglc
"Rim Specialist"
From: Port Angeles, WA
Signed up: 2009-04-18
Posts: 4279
Bikes: 34
Website
Offline

Re: 35 Year Old Stuck Post

Still hoping to find my first Goose. That is a beauty of a frame!! Ya that was a Wald shim. Glad u were able to get it out ok. They still sell those . Enjoy your restore bro!!!


No more media blasting at this time.
I am always glad to give advice any time!!!

Offline

 

#16 2011-03-30 10:49am

SuperDave4130
Pro MemberResident Rationalist
From: Tigard, OR
Signed up: 2010-02-19
Posts: 3514
Bikes: 4
Offline

Re: 35 Year Old Stuck Post

Nice that you were able to save the frame.One of my friends had one of the early Motomag frames like yours and he had Speedo forks on it instead of the Ashtablua forks.Unfortunately the bike was stolen at least 15 years ago.I've owned three old school Mongooses,two Supergooses,and a 10th Anniversary bike that I bought as a frame and fork new in the box in June of '85.I still have the anniversary bike and am now building an '80 Supergoose to look like the first Mongoose I had.I only had that first Mongoose for about five months before it was stolen in October of '84. sad


Doing my part to infuriate the religious right.                                       Soccer isn't a sport,it's a reason to riot.

Offline

 

#17 2011-04-01 5:15am

wired
Pro Member
From: 6202', CO
Signed up: 2009-06-14
Posts: 4490
Bikes: 56
For Sale: 19
Website
Offline

Re: 35 Year Old Stuck Post

This is great info and thanks for posting the detailed pics.  I too have a Goose with a stuck post and can't part with it - I want to conquer it.  I'll be trying this method soon.

Offline

 

#18 2011-04-25 6:18am

mootomagoo76
Intermediate
From: DFW,TX
Signed up: 2011-04-15
Posts: 466
Bikes: 2
Offline

Re: 35 Year Old Stuck Post

i have the same problem w/my 76  the post is super stuck i don't know what can i do,let's trade the stem idea,thanks wink

Offline

 

#19 2011-04-25 6:25am

coasty
Museum Addict
From: Queensland, Australia
Signed up: 2007-03-25
Posts: 3194
Bikes: 18
Offline

Re: 35 Year Old Stuck Post

FYI the alloy posts can be dissolved with caustic soda. Especially fluted posts. It takes a few weeks (!!!!!) but it works.
If you get sick of those frames Pete just send one down here mate. wink


70's bmx is where it's at.

Offline

 

#20 2012-01-24 9:36am

caligoose
"Mr.Skittles"
From: Canton, MI
Signed up: 2009-05-09
Posts: 2201
Bikes: 1
Offline

Re: 35 Year Old Stuck Post

http://i190.photobucket.com/albums/z293/amberpoppy/144.jpg

now thats a post

7/8th drill bit , oil , lots of oil . slow speed drill press, if you go to fast it heats up and stains finish .


but that stem trick is prety good cool

Last edited by caligoose (2012-01-24 9:38am)


I part out all my mongoose.   any and all . 1983-1987  its all I buy its all I sell .  I have more than ill ever need ,

my kids ride the dented stuff ..." for free "    you buy the goods cheep .   ive  assembeled more than 30 geese to og condition
it sucks parts are hard to find , but semi completes aren't hard to find at all .   if I buy your ride it will be parted w/o remorse .

but it will come back in pieces , and possibly become part of a complete ....

Offline

 

#21 2012-01-24 7:58pm

Rich6372
For Sale Restricted
From: Chico, CA
Signed up: 2006-02-05
Posts: 1006
Bikes: 8
Offline

Re: 35 Year Old Stuck Post

Great post,but that is a seat post shim used for putting a smaller size post into a larger frame.

This is My first time sharing this trick on the Museum. I hope You find it as helpful as I do. I have found that placing a large EZ-Out Tap in the end of the post so a wrench can be placed on it is most helpful as well.


Old School, When Quality Mattered!!
I Do My Part for the Planet. I Restore,Sell,and Recycle Old Bikes.
If You Need New Redline,or GT Parts Hit Me Up.

Offline

 

#22 2012-02-22 2:40pm

00_Duck
Pro Member
From: Lee's Summit, Missouri
Signed up: 2006-07-07
Posts: 3722
Bikes: 27
Offline

Re: 35 Year Old Stuck Post

I am getting ready to tackle a solid aluminum fluted seat post stuck in my 79 Laguna. I've tried everything but drilling. And that is what I am leaning towards now.


What have I become, my sweetest friend? Everyone, I know goes away in the end.  ~ NIN Hurt

Offline

 

#23 2012-05-11 7:25pm

tricky69
Pro Member
From: Denver, CO
Signed up: 2012-01-19
Posts: 483
Bikes: 4
For Sale: 3
Offline

Re: 35 Year Old Stuck Post

Good tips guys, thanks for the info.


No guts no glory. Airborne, All The Way
BMX LOVE4LIFE
LOVE YOU MOMMY & DADDY

Offline

 

#24 2013-12-27 8:01pm

njpaulie
Member
From: Bergen County NJ
Signed up: 2013-12-08
Posts: 30
Bikes: 1
Offline

Re: 35 Year Old Stuck Post

Awesome!!!


Die Hard BMX kid all grown up with 2 awesome little boys. I found an 86 Mongoose California in Awesome condition and Now I have the bug to start building the Old School Bikes. I may need your help!

Offline

 

#25 2013-12-28 5:46am

unkleyoda
Jedi
From: Here to there
Signed up: 2010-12-07
Posts: 2354
Bikes: 9
Website
Offline

Re: 35 Year Old Stuck Post

caligoose wrote:

http://i190.photobucket.com/albums/z293 … py/144.jpg

now thats a post

7/8th drill bit , oil , lots of oil . slow speed drill press, if you go to fast it heats up and stains finish .


but that stem trick is prety good cool

Awesome picture of the grass man.  hmm


Wanted: Black/White pinstriped California Lite pad (only need frame pad)
               Schwinn white coaster brake mags (Redstone)

Offline

 

Board footer