daveh , hope you can see the whole of the machine ??
Relocated the picture the other day . Drg. for frame is on a roll of the old silk / linen drawing paper .( just profile of loop)
Mutter . 4220 Cams , mebbe the workedest T100R , 1855 engineski comrade .

cry: gone now , possibly to peasants )
Got a hideous old raceing bike from a cow shed while I was building the Commando .Ten ton fairing and Square gas tank
on a metalic blue ( like the SS Duke ) Wideline frame . Severly wound welding reinforceing up the front tubes / gusset .
I figure someone spent a lot of time Tuneing / polishing the guts of it around 1960 .You can see the long intakes to
the twin 1 1/16 momoblocks , right hand cut, shared float , velocity stacks .
Traded the C.R. norton box for the Tank There , & I was under way .
Frame is from a pranged Commando ( Vs Mercedes. 45 mph into the side of the boot as it backed out . Murrys mate rideing
his 70 roadster ) .Triumph box . 68 650 Tri swing arm . Bloody great non Qd Axle in a Conical Rear .My 70 C'do Fr Brake .
AM4 linings , I think , fore and aft. Biggest compromise , WM 1 Fr WM2 R , 3.00 19 KR76 Fr, 4.25 K81 'R' rear ( US race tyre)
So the little sweetie had 750 raceing rubber on it .
Olde Perry let us have a C.R. Trimph gearset , and a SR II G-45 mag . Guards are 70 C'do for road .
Short Roadholders front .
Girlings ont back Prog Rate springs F & R .
Head lamps decoration, for the highway . Tank turned out to be Manx , This all fell together in 6 weeks , finding
all the stuff I didnt have , and makeing the frame , oil tank , seat base & Engine plates .
Mustnt forget the 69 Tri Seat cover / top ( like the triple ones, 70s )
Raced it the First Pukekohe meet , the Auckland round of the season champs , in the Raceing 500 Class with the Open Production field thrown in ( The 1100 Katanas ).Both on the Club Circuit. Onc meeting at the Long Circuit , and once half heartedly At Bay Park .
Intention was to Do a Series of the frames from 1 1/4 tube , mandrel bent , so envisaged as ' test ' frame .
Same top end on the Short Circuit as a Manx, give or take .Not bad for being (almost) finished a night or so before .
Vs the Katanas , theyd come past , and stop in front of you , Yards further on , youd throw out the picks .
Much snappier / livelier than the behemouths .But a bit cautious whist the brains engaged , a v light so a little flex and I did Learn to Arc weld makeing it .
Overall brilliant ride , even two up on Gravle on the Trigonics no issue .
Unfortunately got digressed by untoward infuances, and not appreciateing quite wahat That Was .