New Departure Model D Dating

[TammyN]

I have a 1939 with the smooth 2-indent nut and the small New Departure = Brake arm. Girls's Schwinn DX.


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[Obi-Wan Schwinnobi]

The second cog nut iteration was the textured style (I think).
It had either a 1-indent or 2-indent and possibly coexisted together, but not sure why.

- 1-indent (forgot to snap a pic, but it exists).

- 2-indent
View attachment 135716

I have this style on a 39 wheel set.. Also wl front hub.. All original off a 39 dx

 

[Miq]

Big Arm New Departure=Brake D Coaster pics from my 1941 Goodrich Schwinn New World

Two indent textured nut

 

[Miq]

24 tooth rear sprocket. Looks like zinc galvanized coating. ??

Partial axle assemby (discs not shown - still soaking)

I ordered a NOS little cone for it and NOS bearings.

 

[Miq]

Original Bearings

 

[Miq]

Front hub is a New Departure WL.

 

[Miq]

 

[bike]

Can anyone post an exploded view so those of us who are not bike mechanics can have the right name for the parts...
Thanks

 

[TieDye]

@bike Maybe this will help:

 

[TieDye]

@bike