TDC (Thomas D. Cross) track cog
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Main Photo
Category:  Single Sprockets
Name:  TDC (Thomas D. Cross) track cog
Brand:  TDC (Thomas D. Cross)
Years:  ? - 1980's
Country:  England
Added By: JohnDThompson on 01/20/10
Updated By: JohnDThompson on 01/20/10
Additional Photos - click for full size
TDC (Thomas D. Cross) track cog
Identifying MarkingsThreading1.37" x 24 TPI
Available Tooth Count14T; 15T; 16T; 17T  
General Information
TDC (Thomas D. Cross) was a respected manufacturer of bicycle components in England until the 1980s when they apparently went out of business. Besides the robust track cog pictured here, they also made freewheels, headsets, bottom brackets, chains, and other components for the bicycle industry. Their parts were widely spec'ed on British bikes including Raleigh, Lambert, and others.
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