Specifications as at Jan 2013

Excalibur, Triumph Bonneville '73 nostalgia dragbike specs. @Jan 2013

Frame: Chromoly 1" dia x .050" wall thickness, tig welded.
Forks: Modified FXR150, 33mm stanchions, shortened
Front wheel: KDX200 hub & disc with spoked 18" WM2 alloy rim
Rear wheel: WR250 hub & disc with spoked 18" WM3 alloy rim
Bodywork: Rear guard & seat is carbon fibre, bullet-nose is alloy
Brake calipers: Nissin motocross, single acting
Bore & stroke: 77.5mm x 82mm (773cc), lightened T140 barrels
Carbs: Amal mk2, 30mm, 650 mains
Fuel: Methanol, 600ml tank capacity
Oils: Motor; castrol R (400ml), Gearbox; ATF (500ml)
Oil pump: Stock 650/750
Valve gear: Stock valves & springs with lightened rockers
Pistons: Stock T140 Hepolite  balanced
Compression ratio: 9.7:1
Exhaust: 1.5 inch O.D., 37.5 inch long
Crank: Stock T140
Conrods: Stock T140, balanced
Crankcases: Stock 1973, RH gearshift, matched pair.
Primary drive: Chain, duplex 29/58
Clutch: Hyde, dry, 7 bonded plates
Gearbox: Stock 5 speed, lightened selectors
Cams: Inlet; Stock T140, Exhaust; stock T120, stock T140 camwheels
Ignition: Boyer Bransden electronic mk3
Battery: 16v Lithium Polymer, 1000 mAh
Gearing: 4.32:1 overall
Weight: 95kg (209 lb)dry, 96kg (211 lb)wet
H.P. Approx 72hp, according to ET vs weight online calculators
Best 1/4mile E.T. 11.1  March 2012 NZ Nats
Best 1/4mile speed: 117mph Nov 2012 Comp1
Engine builder, design concept, technical detail: Pete Morrison
Rider from this season: Jamie Flavell
Frame and exhaust fabrication: Jamie Flavell
Pitcrew: Pete, Orb, Peter.
Sponsor: H.D. Cycles, Hamilton, N.Z.