Here we go again. The AS&CO Sprocket...

[Miq]

Both of these bikes are I serial New Worlds and they both have the dog leg covering the S.

What other examples exist?

 

[WillWork4Parts]

Both of these bikes are I serial New Worlds and they both have the dog leg covering the S.
View attachment 2218379

What other examples exist?

More like what examples exist where someone is willing to take it off of the bike and show us pictures of the fastening holes....??

 

[GTs58]

I doubt anybody set the drive pin in the A hole. That would be a really sloppy fit.

 

[WillWork4Parts]

I doubt anybody set the drive pin in the A hole. That would be a really sloppy fit.

You know...I really tried to watch how I phrased the talk about holes, but...

 

[Miq]

More like what examples exist where someone is willing to take it off of the bike and show us pictures of the fastening holes....??

I'd like to see more pics of bikes with 1 piece cranks and an AS&Co chainring. Are they all I serial New Worlds with the S covered? Looks like the hole is a mod of a standard 3-piece chainring, but I'd like to see more examples. Is this a Defense model thing? Just wondering how many of these have popped up.

 

[Miq]

I searched the New World list. The two examples already posted here are the only New Worlds with this combination (1-piece w AS&Co).

 

[GTs58]

 

[Schwinny]

Both of these bikes are I serial New Worlds and they both have the dog leg covering the S.
View attachment 2218379

What other examples exist?

I understand there is no ephemeral evidence. I also understand the way these are done is inconsistent with how they could have, should have been done.
Then @Miq shows the mens above (I serial), now there is this one with an I serial number also.
The thing that always rings in my head is that at first, I only saw them on girls bikes which is inconsistent with nature.
IE: How many girls are taking their bikes apart, securing a 3 piece chain and arm, creatively disassembling it with grinders and drills, making it fit to work on a one piece crank, and then putting it all back together without adding any other better parts. These are being seen on otherwise very average bikes.
Fathers and brothers doing it is a theory, and I can see that, yet there are no other mods which is also an earmark of the brother and father dynamic.
I lean towards these bikes all being sold by the same dealer, pre modified. At this point, after seeing so many, I think the most important thing is to find a bike shop decal on one of these.

On eBay today. I may ask for better pics of the crank area....

1942 Schwinn New World | eBay

Here's your opportunity to own a very nice antique bicycle in very good condition, bicycle show to be all original, it has some age rust, tires are diamond and are both original, they hold air but they are crack on the sides, wheels have surface rust and they are solid same with the handlebars...

ebay.us

 

[Schwinny]

From a different thread, here are the step by step pics of the one I bought being taken apart.
It was on a girls H stamped new world. No other mods to the bike. (Standard crank undated)
If you consider the original shape of the cutout under the S, hand drilling the drive pin hole to a PERFECT fit is not possible. This drive pin hole had to have been properly measured and drilled on a press. Not kid stuff.
(Revised after I went back and reminded myself)

 

[WillWork4Parts]

Not every at home duo would think of this, or have the extra part...but the best way to approach changing that square hole to a round one is to match drill it...Aka use a known good hole as a guide to replicate the diameter and distance from the other hole. Not saying it's impossible for a dad at home to come up with this scheme, but it would take some previous experience with sheetmetal type work or possibly some guys scheming together at a bike shop like you said.

If I were doing it today, I would use a stack of 4 leaf clover sprockets(you know, the ones you never want to use since they're just not as cool as an AS&CO). Clamp them together on a 1pc crank(pin located in large holes) or a precise fit bolt with the AS&CO sprocket facing down on the bottom, center the square hole with the other holes the best you can before clamping. Then drill up with a bit that matches the other holes. I might even only use another sprocket as a visual guide to file the hole close to size and then ream up to size, as to preserve the chrome and not peel or chip it off with a high speed drill bit trying to punch through the other side.