With a world-wide reputation for performance, stamina and complete dependability, the famous Triumph Thunderbird has for many years been first choice of the keen sidecar or hard-riding solo man. Now with a light alloy cylinder head, more powerful braking and many other new features it is one of the most attractive motorcycles available today.
In almost every part of the world you will find Triumph motorcycles in service with the police. What higher tribute could be paid to Triumph performance, reliability and lasting service than this? Many years of experience enable Triumph to supply the right mode l for o very police duty designed for equipping with a wide range of specialised radio and other equipment.
The modern vertical twin engine was first introduced by Triumph and has long since become the accepted type for high performance motorcycles. Triumph engines are famed for their efficient design and robust construction, which ensures absolute reliability over long periods. The 650 c.c. type illustrated here is the engine used, with minor variations, in all Triumph models of this capacity. Note the twin high-level camshafts driven by gears, the tremendously rigid crankshaft and the light alloy head with large diameter inclined valves.
The inset sketch shows the plain distributor driving gear (as on 6T). On the main drawing the gear incorporates auto-advance for magneto (as on other 650 c.c. models).
"B" RANGE MODELS 650 C.C.
ENGINE 650 c.c. o.h.v, vertical twin with two gear-driven camshafts, Light alloy cylinder head, cast-iron barrel, high compression pistons, large bore carburetter. Splayed port head with two carburetters on T120, One-piece forged crankshaft with bolt on central flywheel. "Ef" section RB66 alloy connecting rods with plain big-ends. Dry sump lubrication with plunger type pump and pressure indicator. Gear-driven magneto with auto control. Thunderbird (6T) has A.G./D.G. lighting ignition system with emergency start circuit. Polished aluminium oil bath primary chain case. Air cleaner (not T120).
GEARBOX Triumph design and manufacture. Shafts and gears of hardened nickel and nickel-chrome steel - needle roller layshaft bearings. Positive stop footchanga ("Slickshift" auto clutch operation on 6T and TUO). Multiplate clutch with indestructible cork sheet linings and rubber pad shock absorber. Accessible filler and level plugs and dual gearbox adjusters.
FRAME Brazed cradle type frame with twin front down tubes and swinging fork suspension, hydraulically damped and adjustable for varying loads. "Easylift" centre and prop stands (latter optional extra). Provision for anti-theft lock to steering head. -Front wheel stand.
FORKS Triumph design telescopic pattern with hydraulic two-way damping and steering damper.
FUEL TANKS Handsome large capacity all-steel welded petrol tank mounted on rubber and easily detached. Quick release fillers and plated parcel grid. Froth tower on oil tanks.
NACELLE 6T and T110 only (Patent No. $42670). Triumph design integral with top of forks enclosing headlamp, instruments and switchgear. Instruments internally illuminated,
Front: Full width hub, heavily finned, with efficient 8-in, diameter brake.
Rear: 7-in. diameter with cast-iron drum integral with chain sprocket. Fully floating shoes.
WHEELS AND MUDGUARDS Triumph design wheels with plated spokes and rims. Efficient front guard and stylish rear enclosure on 6T and T110.
LIGHTING EQUIPMENT Lucas alternator, crankshaft mounted, 12 a.h, battery, powerful headlamp (quickly detachable where nacelle not fitted) with combined reflector/front lens assembly, "pre-focus" bulb and adjustable rim. Wide angle reax/stop light with combined reflector.
SPEEDOMETER Smiths 120 m.p.h. (180 Km.p.h,) chronometric type with r.pm, scale, internal illumination and trip recorder.
HANDLEBAR Chromium-plated with quick-action twist grip and adjustable friction control. Integral hom push Adjustable plated clutch and brake levers with built-in cable adjusters.
TWINSEAT Triumph design. Latex foam cushion covered in black waterproof "Vynide". Hinged on 6T and T110.
TOOLS Kit of good quality tools and tyre inflator, 192-page instruction Manual.
EXTRAS Prop stand all models. Pillion footrests all models. Quickly detachable rear wheel. (Wheel can be removed leaving brake, chain, etc. undisturbed.) Steering lock all models.
"C" RANGE MODELS 350 c.c. and 500 c.c.
ENGINE Advanced design vertical twin cylinder o.h.v, with two camshafts driven by gears. Pushrod operated overhead valves in a light alloy cylinder head. High duty iron cylinder block. Dry sump lubrication with plunger type pump. Steel connecting rods with plain big-ends. A.C./D.C. lighting-ignition system with crankshaft-mounted alternator and emergency start circuit. T100A has energy transfer ignition which enables the battery to be dispersed with if desired. Oil pressure indicator. Silent Duplex primary chain in polished aluminium oil-bath with tensioner. Efficient air cleaner, quickly detachable for servicing.
GEARBOX Four speeds with positive foot operation and gear-position indicator. Built in unit with engine. Heavy duty shafts and gears of hardened nickel and nickel-chrome steel. Multiplate clutch with cork sheet linings and rubber block shock absorber. Folding kickstarter.
FUEL TANKS All steel welded tank with parcel grid and chrome motif. Oil tank under twinseat. Quick release filler caps. Rubber knee grips. FORKS Telescopic pattern with two-way hydraulic damping. Steering damper. Front wheel stand.
FRAME Heavy duty brazed cradle type frame with swinging fork rear suspension, hydraulically damped. "Easylift" centre stand. Provision for padlocking steering head against theft.
NACELLE (Patent No. 647670.) Integral with top of forks enclosing headlamp unit, 120 m.p.h. (180 Km.p.h.) speedometer, ammeter and switchgear. All instruments internally illuminated and rubber mounted.
BRAKES Full width front hub heavily finned, incorporating powerful 7-in. brake. Same diameter rear brake. New fully floating shoes, cast-iron drums, finger adjustment front and rear.
WHEELS AND MUDGUARDS
Wheels of Triumph design with plated rims and spokes. Front mudguard of generous proportions. Stylish rear enclosure, which incorporates provision for mounting panniers if required.
Powerful 7-in. headlamp has a combined reflector,'front lens assembly, "pre-focus" bulb and adjustable rim. Wide angle rear,stop light with integral reflex reflector.
TWINSEAT ASS EM BLV Latex foam cushioned seat, covered in black "Vynide" completely waterproof. The seat is hinged and when lifted reveals the air cleaner, 12 a.h. battery, coil, rectifier, oil tank and filler, and tools in moulded compartments in rubber container. The seat release knob is removable as an anti-theft device.
HANDLEBAR Chrome-plated bar with, quick-action twistgrip adjustable for friction. Integral dips witch'horn button. Adjustable plated levers with built-in cable adjusters.
FINISH 3TA: Shell blue sheen with black frame. STA: Ruby Red.. T100A Black and Silver.
EXTRAS Pillion footrests. Prop stand. Quickly detachable rear wheel.
TR5A Specification as above but detachable headlamp replaces nacelle unit and standard sports mudguards are fitted front and rear.
Sleek, modern twin cylinder OHV Engine-gearbox unitas fitted to"C" range models (350 500 c.c.).
Raising the seat reveals the tool kit. oil tank and elecrricai equipment on"C" range models.
A light, easily handled 500 twin bearing a name synonymous with high performance - the Triumph Tiger 100. High compression pistons, special camshafts and many unique features - allied to modern appearance and first class handling, underline the special appeal of this model to the sporting rider.
Stylishly modern in every detail and with an exciting performance, the famous Triumph Speed Twin is a firm favourite with discerning riders in every part of the world. Light in weight, easy to handle and with first-class brakes and roadholding it typifies the modern trend to refinement in motorcycling.
ENGINE High-performance single cylinder o.h.v, with die-cast alloy cylinder head. Inclined large diameter valves. "H" section connecting rod with plain big-end. Dry sump lubrication with double plunger pump. Efficient barrel type silencer. Air cleaner.
FOUR-SPEED GEARBOX Built in unit with the engine in a highly finished streamlined casing. Multiplate clutch with cork sheet linings and rubber pad shock absorber. Positive stop footchange. Silent duplex primary chain.
FORKS Triumph telescopic type with long, soft springs giving a comfortable ride and accurate steering,
FRAME Light, but strong loop type frame. Swinging fork rear suspension with hydraulic damping. Provision for anti-theft lock to steering head.
BRAKES Very efficient smooth-acting brakes with large diameter cast-iron drums.
WHEELS Triumph design with plated spokes and rims. Efficient mudguards front and rear. Stylish rear enclosure panels. (T20 only.)
FUEL TANKS Attractively shaped all-steel welded petrol tank, chrome motif. Ample capacity oil tank. Quick release caps and accessible filters.
ELECTRICAL EQUIPMENT A.C.D.C. lighting-ignition system with crankshaft-mounted alternator and emergency start circuit (not competition models, see below). Powerful head and rear lamps. Reflex reflector.
TOOLBOX All steel with complete kit of good quality tools and tyre inflator.
NACELLE T2Q only (Patent No. 647670). Neat streamlined shell encloses headlamp, instruments and switch-gear and includes a gear position indicator.
SPEEDOMETER Smiths 80 m.p.h. (140 Km.p.h.) speedometer.
OTHER DETAILS Finish: Silver grey and black. Quick action twistgxip, rubber knee grips.
EXTRAS Pillion footrests. Prop stand. Steering lock.
OFFICIAL AMERICAN SPEED RECORDS
(R.M.A. Confirmed) held by Triumph
Standard with pump fuel
214.47 m.p.h,* 212,28 m.p.h. 139.82 m.p.h.
TIGER CUB SPORTS MODELS
The Tiger Cub sports model is offered in two versions - the T20S L high performance model and the T20T with lower compression engine for trials use. Specifications are broadly similar and are based on successful factory experience. Sporting riders will find these models light, easy to handle and with power to cope with any situation.
Engine basically as the standard T20 but with energy transfer ignition which enables the battery to be dispensed with. Direct lighting is employed. Forks are of heavier design having large diameter stanchion tubes and full hydraulic damping. Quickly detachable headlamp (where fitted). Finish: Ruby Red and Silver petrol tank, black frame and forks.
Triumph 1961 TR5AC Brochure
Triumph 1961 TR6 Brochure
If you have a query or information about Triumph motorcycles please contact us