1968/70 brake drum sprocket

pierodn · Apr 20, 2020

Hi All.

Are there other differences between 1968/70 Commando “brake drum sprocket” and the Atlas one as well as the sleeve nuts (06.0319 against 06.7703)?.

Thank you.

Piero

ILLF8ED · Apr 20, 2020

At least the lug nuts are different. Commando is UNF. Atlas has British threads.

N0rt0nelectr@ · Apr 21, 2020

I has a NOS one from Old Britts that came with a bike I purchased. It is for sale along with the nuts, if you are interested?
John in Texas

rivera · Apr 21, 2020

Piero, I guess also the teeth are narrower. The Atlas had 520 chain, Commando has a 530 chain.

dynodave · Apr 21, 2020

retired auto parts salesman aka mind reader

N0rt0nelectr@ said:
I has a NOS one

We are not mind readers?
NOS ONE = Atlas or Commando?

N0rt0nelectr@ · Apr 21, 2020

70 Commando.
John in Texas

dynodave · Apr 21, 2020

rivera said:
The Atlas had 520 chain

My 68 Atlas has 3/8 sprocket
My 63 atlas is 1/4

pierodn · Apr 21, 2020

M

rivera said:
Piero, I guess also the teeth are narrower. The Atlas had 520 chain, Commando has a 530 chain.

Both mine have 9,1 mm tooth tickness.

1968/70 brake drum sprocket

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