If you enlarge the picture of dad and the Bulty at Calder you can see that his original carburettor was an Amal GP with the separate bowl for more fuel flow. The main jets were in the 2000 range and his favourite plug was an RL49 or 59 ? lodge which I still have 2 or 3 of When I spoke to Freaky I went into the back shed and pulled out the collection of rear sprockets, a new set of exact.handlebars and the original full alloy brake lever with the cable still attached. The bike was made & welded together from plans that dad sent to England for, from Alf Hagon. When the main bar was put in, it was of oversize tubing compared to a normal Hagon. This was because dad thought it would be ok to use that as the fuel tank. It was found not to run economically as a 2000 size jet swallows alky. The tank was fitted later. The ignition was mounted on the front dirt shield in the Calder photo. Later the femsatronic coil was fitted to the rear dirt shield to stop the wire joins failing from vibration.
When the pursang motor was put into the Hagon, a YAMAHA motor was put into the pursang and was alway called the Yamsang. Dad was a lifetime member of the Harley Club Of Victoria and never missed a Romsey grass track. The Hagon was also used at the Harley Club drags at Calder Park and after lunch they would then do road race. This was the first time that I met another gentleman of the sport, Rusty Craggill. Rusty let me ride his Ta125 Yamaha road racer around the pits at Calder until I ran out of petrol.
The Bulty was also used in Harley Club hill climbs, I can't remember where, but I will check dads trophies to try and find out. There are more photo's at Romsey that I will try to find and get up on the site. Thanks guys for your kind words about the bike and it's history.