1921 Columbia ArchBar bottom bracket trouble.....

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IngoMike

Wore out three sets of tires already!
May 7, 2013
780
Sand City, Ca.
I was having trouble with a loose crank arm so I took my BB apart and found the drive side cup had shredded off in a few places, Hmmm. I thought that since the damage was only to the edge of the cup and not the bearing surface that it should be ok, but that is not the reality. Once I put everything back together and get a few miles from the house, the crank arms start loosening up and the problem resurfaces. These Columbia BB's are small, 1 5/8", anybody have some cups? This was my daily rider until the breakdown.
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cyclingday

Riding a '38 Autocycle Deluxe
Feb 24, 2008
8,032
Costa Mesa, California. United States
Wow!
Pope definitely didn’t have a better idea there.
Looking at that two piece crank, sure helps to explain why the one piece crank was invented. Lol!
Sorry for the chuckle at your expense, but I just went through a similar experience with a Colson crank earlier this year.
We’ll all keep an eye out for that type/size bottom bracket for you.
Good luck!
 
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Archie Sturmer

I live for the CABE
Jun 13, 2018
1,542
Los Angeles, CA, USA
How (vs. how-well) do these 2-piece cranks actually work; (hope to avoid having to find out).
It looks like the cranks use a turn-buckle concept, where rotating (relative) the center sleeve tightens the 2 crank arms together.
Not sure what keeps the 2 arms tight to each other, (besides the sleeve threads); or what would cause the sleeve to loosen with riding.
However, the LHS jam nut looks to keep the bearings tight, (if the 2 arms also keep together).
The LHS crank is slotted, but I do not see a keyed washer?
 

GiovanniLiCalsi

Riding a '38 Autocycle Deluxe
Jun 29, 2012
4,216
Alameda, California
Nice basket!
Is that original or remake?
Looks similar to an Iver Johnson basket.

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catfish

Riding an Alexander Rocket Bike
Sep 25, 2006
24,948
Boston, Massachusetts
thecabe.com
They are actually a three piece. There is a double nut inside that holds the crank arms together.
 
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IngoMike

Wore out three sets of tires already!
May 7, 2013
780
Sand City, Ca.
These first three photos are not mine, but they tell the complete story of the 3-piece crank...the last photo is my special tool set-up.
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Here is my high tech solution to holding the collet to unscrew the crank arms.....
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IngoMike

Wore out three sets of tires already!
May 7, 2013
780
Sand City, Ca.
The Iver Johnson "Man Basket", an exact reproduction of the original by @ivrjhnsn, a really, really nice piece! I can get a lot done with this basket before I have to break out the CycleTruck. The basket has also saved me in the past, I felt a loose front end one day and found that the stem had broken just below the basket mount and probably would have given way if not for the basket. I might have to dial it back when riding this one......
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Archie Sturmer

I live for the CABE
Jun 13, 2018
1,542
Los Angeles, CA, USA
Maybe the stem (or replacement) could be inserted more fully into the fork; and maybe the basket bracket could be attached to the horizontal (whatdoyoucallit) offset member of the stem?
 

bleedingfingers

Finally riding a big boys bike
Mar 11, 2013
171
Regina, Canada
I just got my second similar basket but it attaches to 2 points on the handlebar

will hold 45 cans of beverages .
That would be hard on the stem for sure .

Maker unknown

Your everyday rider is super cool





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bleedingfingers

Finally riding a big boys bike
Mar 11, 2013
171
Regina, Canada
Not as many crossbars I think they were made specifically for Newspapers .
think you would have to put in a box to carry other stuff.
 

IngoMike

Wore out three sets of tires already!
May 7, 2013
780
Sand City, Ca.
I think I hijacked my own thread by posting that basket picture! I know its a cool basket, but it is currently useless without a bottom bracket!
Anybody? I need a 1 5/8" bottom bracket cup!
 
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