Hi,
Can someone advise me on NJS Dura Ace 7400 bb. I found out that NJS is a standard for track frames and which means that bb is BSA shell 68 and ISO square taper (not JIS which is a major square taper standard for Dura Ace 7400 bb). On ebay I found two types of NJS bb:
1) 68-112 which has NJS on both cups and NO NJS writing on the spindle
2) 68-109 which has NJS on both cups and also NJS writing on the spindle
Could someone knowledgeable advise me on this subject? Why the bb 68-112 has no NJS on the spindle? Why 68-109 has NJS on the spindle? Does it mean something for the user?
thanks a lot!
Can someone advise me on NJS Dura Ace 7400 bb. I found out that NJS is a standard for track frames and which means that bb is BSA shell 68 and ISO square taper (not JIS which is a major square taper standard for Dura Ace 7400 bb). On ebay I found two types of NJS bb:
1) 68-112 which has NJS on both cups and NO NJS writing on the spindle
2) 68-109 which has NJS on both cups and also NJS writing on the spindle
Could someone knowledgeable advise me on this subject? Why the bb 68-112 has no NJS on the spindle? Why 68-109 has NJS on the spindle? Does it mean something for the user?
thanks a lot!
