Morrow cog differences

[1817cent]

I might be late to the party on this but wanted to post in case it helped others. I replaced a Morrow 1/2" chain 18 tooth cog with a Morrow 1/2" chain 20 tooth cog. Unfortunately when i put the wheel back on the bike the chain would not sit on the new cog. When compared to the 18 tooth the 20 is thicker. Now i know.. Anyway, i am back on the hunt for a narrow profile 20 or 22 tooth Morrow cog and driver.

 

[Archie Sturmer]

Sounds like the wider cog sprocket might be 3/16” width versus the usual 1/8” width?

Larger 3/16” width x 1/2” pitch bicycle chain is available, and I believe that Westfield once used 3/16” width x 1/2” pitch chain ring front sprockets.

 

[1817cent]

Yes, good info. I never thought 2 sizes of 1/2" chain was used. Now i know..

 

[slick]

The 3/16" rear cog was used for CWC bikes. I have a pair of 1941 girls bikes that both are half inch pitch with these wider chain rings as well as rear sprocket is also wider.

 

[GTs58]

A good buffing should take care of the problem shouldn't it? We're only talking about a 16th of an inch.

 

[bloo]

3/16 chain is used in BMX for landing on rocks and such. Try KMC 415 or similar.

 

[mrg]

CWC Heavy Duty!

 

[fordmike65]

Some Westfield as well.