Reply To: 2021–NSR Formula 86/89 Home › Forums › Club Races › Racing Calendar, Classes & Regulations › 2021–NSR Formula 86/89 › Reply To: 2021–NSR Formula 86/89 July 5, 2021 at 5:17 PM #16690 DattoParticipant Interested to know what alterations we will be allowed make to forestall failure of the crown gear hub. I replaced my crown with a brass hub NSR piece, because of Aluminum’s propensity for galling. "Enjoy every sandwich" -Warren Zevon
