On Tuesday, July 2, 2019 at 8:30:12 AM UTC-4, AMuzi wrote:
Archive search report for Suntour Cyclone BB-400:

I was mistaken. The Cyclone series take small section (JIS)
113mm symmetric spindle. So yes you can use a modern
cartridge unit.
--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

Thank you very much Andrew. Your informative answers to many queries here on this newsgroup are much appreciated.

Cheers