JYPC

I have a few different bottom bracket spindles. I'm not too sure what they'll be good for, and/or their suggested use.

Also, I'm wondering their orgin, who made them and the country.

Thank you.

The first spindle is labeled "YST-7NL" and "CR-VD"

The second is "3RR-B", "Cr-Mo" and "K-3"



I also have a KoR bottom bracket 1.37x24. What I am wondering about this bottom bracket is what it was originally used for.

I have a SKF sealed cartridge bottom bracket that has "BSA" stamped on the left side. Stamped THUN 1.37x24. What's up with this one as well?

due ruote 

This might help. Don't throw them away; they're getting harder to find.

1.37 x 24 indicates standard British thread. That's the most common.

Bill Kapaun

7NL is for a 73MM shell.
Spindle is 122MM long, with 1 end 1MM longer than the opposite.
CR-VD Chrome-vanadium steel????

3RR B is for a 68 MM shell and has a 136MM symmetrical spindle. B is for BOLT.

JYPC

Thank you for your response, this was great help.

sahadev

JYPC - If you want to sell the YST-7nl axle, try letting the folks on the folder forum know about it. I believe that is the axle that will work on the Raleigh Twenty, a folder that is popular for being rebuilt.

JYPC

I have about 10 NOS of those spindles, and I was wondering about just that.

Now which folder would I post in to list the purchase of parts; that being NOS, new or used.

sahadev

Post to the Folding Bikes forum at this link:

https://www.bikeforums.net/folding-bikes/

JYPC

Thank you again.