Author Topic: Wanted G&J Rambler crank bearing cups  (Read 3273 times)

Tyson Brown

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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.

55inchwheel

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Re: Wanted G&J Rambler crank bearing cups
« Reply #1 on: January 27, 2020, 03:36:50 PM »
Tyson, I've looked at your photos and pondered a modern day part that you could use. I have a couple English bikes from the 1950s, I haven't checked their bearing cups tpi, but I envision turning them around and inserting the cups backwards to put the bearings on the outside like yours. It would be easy to weld a little lip on the outside of the English bike cups (if their diameter is what your need.)

 

slcurts

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Re: Wanted G&J Rambler crank bearing cups
« Reply #2 on: February 11, 2020, 01:32:51 PM »
Someone on here - Craig Allen? - sold me a whole NOS bottom bracket set for my 1899 Rambler.

Bjd.

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Re: Wanted G&J Rambler crank bearing cups
« Reply #3 on: February 14, 2020, 08:26:02 PM »
Find Ed Grace, he is the rambler guru, and has been very generous with his help in the past. He is John Grace's brother.

andrew gorman

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Re: Wanted G&J Rambler crank bearing cups
« Reply #4 on: February 23, 2020, 06:52:51 PM »
If you find some installed in a frame, be very careful taking them out.  A set I had were hardened to the point of brittleness and chipped badly/were destroyed in the process.  This is something to watch out for in TOC bikes in general.