4 speed,do not think they ever made them with 5 speeds,this would be among the last of triumph/bsa unit singles it being a 1972,they were all BSAs just badged triumph'
I think I have the charging system all worked out ,got a aftermarket regulator/rectifier off ebay that turned out to be neg.ground,bike is pos. ground but as long as I keep the body of the reg/rect insulated all is good,buzzed the neighborhood again yesterday still pulling varnish from the tank in flakes but it's getting better,have to fllush the filter out after I run it