"It's Dante from Manila...I found this unique specimen in an old auto shop. Engine number: 27531 e 12. It's an old Norton Domi Racer... I think... the gauges say so ;)"The bike in question is a beautifully preserved 1950 Model 7 Dominator of 497cc, first of the line of Norton twins designed by Bert Hopwood, and the second year of production, the Mod 7 having been introduced to the public in late 1948 (the engine number 'E' denotes 1950, the '12' = Model 7). The frame is basically the same Garden Gate plunger as used on the Manx, with long Roadholder forks, and the petrol tank panels would originally have been painted silver over the chrome. The speedo (likely supplied by DomiRacer!) sits in a small fork-top panel, and the sheet metal looks remarkably correct. Somebody loved this bike.
These early 'iron' 500cc vertical twins are really special - the first Triumph Speed Twins and the BSA A7 share many similar characteristics, and having owned and ridden examples of each, I think they're the best of the whole twin-cylinder mania which gripped England post-war. The engines are quiet, with iron cylinders and heads, they are mildly tuned and give reasonable power, but most of all they're very smooooth and won't cause your hands to go numb or your fillings to fall out like their enlarged cousins over the years. Nice score, Dante.
Some specs on the Norton; bore and stroke are 66mmx72.6mm, 497cc, ohv vertical twin with 360 degree crankshaft throws (piston both rise and fall together, but they fire on alternate strokes - all Brit vertical twins used this except the Triumph Bandit, which was never produced beyond the prototype stage. The Bandit used a 180 degree crankshaft, where one piston is up while the other is down, as per Honda CB/CL twins). The engine produced 29hp @ 6000rpm, although you'd be truly mean to rev this lovely old thing that hard. Original cost in England was £215... and the new model was very well received by the press.
If you have a Model 7 and want company, there is a Yahoo egroup for this model.
And, thanks to youtube, below is a short video of a Model 7, which is in lovely condition.