Gramp’s 1941 New World - Trying to get it running as a rat rod bike


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MarkKBike

Wore out three sets of tires already!
Apr 17, 2017
667
1,509
Chicago Suburbs
This entire thread was a joy to read, and the end result looks spectacular. I can only hope you post more of your restores in the future.
 

Miq

Finally riding a big boys bike
Jan 12, 2019
126
124
48
Arizona
@MarkKBike Thanks Mark! I certainly have a new appreciation for the potential in these old bikes. I have a different eye looking out for this kind of stuff now. o_O
 
Likes: Eatontkd

GTs58

Riding a '38 Autocycle Deluxe
Sep 2, 2012
9,196
7,050
Central Arizona
Superb job on the resurrection, great thread and your abilities are exemplary! And I really enjoyed following your rebuild.
1549226620894.png
 

gkeep

Finally riding a big boys bike
Jun 11, 2014
463
859
Alameda, CA
Great job and ongoing story. What a fun trip through the process.

You pegged that strut problem. My teens Pierce has the same break in the back fender strut. I trapped the two piece with a wide washer layered with a leather one and it works ok but not as elegant as your solution. Hats off to you!
 
Likes: Miq

sam

I live for the CABE
May 24, 2006
1,446
429
San Antonio, United States
The steer tube can be straighten, I've done so. A shop press and wood blocks would work best. But I've also used a vies and sleg hammer. Also a 1 inch I.D. brass nipple split with a hack saw also makes a good block for the vice
 
Likes: Miq

sam

I live for the CABE
May 24, 2006
1,446
429
San Antonio, United States

sam

I live for the CABE
May 24, 2006
1,446
429
San Antonio, United States
Forgot to say. 41s new worlds were not fillet brazed as other schwinns, they were steel welded and body lead was used to give them the Schwinn look. If you turn the frame over you will see the weld as they didn't bother to body lead the welds at the bottom of the BB.
 

Miq

Finally riding a big boys bike
Jan 12, 2019
126
124
48
Arizona
You pegged that strut problem. My teens Pierce has the same break in the back fender strut. I trapped the two piece with a wide washer layered with a leather one and it works ok but not as elegant as your solution. Hats off to you!
Thanks gkeep! PM me if you want more info on making some. Still holding together well after daily rides!!
 

Miq

Finally riding a big boys bike
Jan 12, 2019
126
124
48
Arizona
The steer tube can be straighten, I've done so. A shop press and wood blocks would work best. But I've also used a vies and sleg hammer. Also a 1 inch I.D. brass nipple split with a hack saw also makes a good block for the vice
Thanks Sam. The split brass nipple idea would be nice for pressing on the non treaded parts of the tube. I used wooden vice jaws and long hollow bar lever arms to get it straight. You can see the pics a few pages back.
 

Miq

Finally riding a big boys bike
Jan 12, 2019
126
124
48
Arizona
Forgot to say. 41s new worlds were not fillet brazed as other schwinns, they were steel welded and body lead was used to give them the Schwinn look. If you turn the frame over you will see the weld as they didn't bother to body lead the welds at the bottom of the BB.
Hi Sam, thanks for sending more pieces of the puzzle on the frame construction. It does look fillet brazed to me. I can imagine "body lead" could quickly give it a similar look, but wouldn't it be soft like lead? Here's a pic of the BB. I'm no welding expert but it looks like fillet welding to me...

IMG_0680.jpg
IMG_0681.jpg


Here's some bare patches on the weld on the head tube for reference. It looks fillet welded to me too.
IMG_0682.jpg


How could you tell if it was body lead?

Miq
 

sam

I live for the CABE
May 24, 2006
1,446
429
San Antonio, United States
Schwinn bicycles use brass to fillit weld the joints---except the war ear bikes (your new world) which were steel welded---See the welds are not of a yellow brass and the top finished welds are covered in that soft body led to "give" the Schwinn look. And when you used the wire wheel on those joints you really scratched them up. They can be redressed with sand paper if you want to. You can see that some brass was used on the bridge(it's yellow) but the main tubes are steel welded(silver colored)
 
Likes: Miq

Miq

Finally riding a big boys bike
Jan 12, 2019
126
124
48
Arizona
Thank you for explaining it further Sam. I see what you mean now. So interesting all the different fabrication trade offs they made and how it evolved over time. Thanks!
 

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