Old-fashioned part of wheel’s rotation finally very loud? (9)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Old-fashioned part of wheel’s rotation finally very loud OUT (=old-fashioned, not in) + SPOKE (=part of wheel) + <rotatio> N (“finally” means last letter only); outspoken is very loud, vocal, with one’s opinions