1
Board for buying and selling Wheelmen goods and services. / Wanted G&J Rambler crank bearing cups
« on: January 21, 2020, 10:28:15 PM »
I am looking for two crank bearing cups for a G&J Rambler bicycle circa 1897. I expect a few years prior/post will likely use the same cups.
Strangely enough as far as I can tell both cups are right hand threaded which doesn't make sense to me because it seems like one should be left hand thread but maybe Rambler did not start using left hand threads on crank bearing cups in 1897.
The crank bearing cups measure 1.4218 (1-27/64") on outside of the threaded area.
Threads per-inch aligns perfectly with 26TPI on a thread gauge.
I found this information on the internet:
Raleigh: 1 3/8" x 26 TPI and other brands like Rudge.
Chater Lea: 1.45" x 26 TPI another old British spec.
Both Raleigh and Chater Lea use the same 26TPI but neither seem to be correct for diameter.
If anyone else has dealt with this problem of replacing crank bearing cups on a Rambler bicycle, what did you use for replacements? Did you find a modern equivalent that worked if you could not find original cups?
If anyone has the proper cups or possibly a parts Rambler to sell please let me know.
email: year1890 (at) aol.com
Or send me a message through the Wheelmen website
Thanks.
Strangely enough as far as I can tell both cups are right hand threaded which doesn't make sense to me because it seems like one should be left hand thread but maybe Rambler did not start using left hand threads on crank bearing cups in 1897.
The crank bearing cups measure 1.4218 (1-27/64") on outside of the threaded area.
Threads per-inch aligns perfectly with 26TPI on a thread gauge.
I found this information on the internet:
Raleigh: 1 3/8" x 26 TPI and other brands like Rudge.
Chater Lea: 1.45" x 26 TPI another old British spec.
Both Raleigh and Chater Lea use the same 26TPI but neither seem to be correct for diameter.
If anyone else has dealt with this problem of replacing crank bearing cups on a Rambler bicycle, what did you use for replacements? Did you find a modern equivalent that worked if you could not find original cups?
If anyone has the proper cups or possibly a parts Rambler to sell please let me know.
email: year1890 (at) aol.com
Or send me a message through the Wheelmen website
Thanks.