KTM 640 Duke II Final Edition

KTM 640 Duke II Final Edition
Manufacturer	KTM
Production	2007
Engine	Four stroke, single Cylinder. SOHC, 4 valves, engine balancer
Compression ratio	11.5:1
Top Speed	162 km/h / 101 mph
Ignition	Kokusan contactless DC-CDI ignition with advanced system
Spark Plug	NGK DRBEA
Battery	12V 8Ah, maintenance free
Transmission	5 Speed
Frame	Central chrome-moly steel frame
Suspension	Front: WP - 4054 Roma Top adjuster, preload, compression and rebound adjustable Rear: Central shock absorber WP IBS with PRO-LEVER linkage to rear- swing-arm with needle bearing
Brakes	Front: Single 320 mm disc, 4 piston caliper Rear: Single 220 mm disc, 1 piston caliper
Front Tire	120/70 - ZR17 58H
Rear Tire	160/60 - ZR17 69H
Wheelbase	1460 mm / 57.5 in
Seat Height	860 mm / 33.9 in
Weight	145 kg / 320lbs (dry),
Fuel Capacity	11.3 L / 3.0 US gal / 2.4 Imp gal
Manuals	Service Manual

It could reach a top speed of 162 km/h / 101 mph.

Engine

The engine was a Liquid cooled cooled Four stroke, single Cylinder. SOHC, 4 valves, engine balancer. The engine featured a 11.5:1 compression ratio.

Drive

Power was moderated via the Multi-disc in oil bath.

Chassis

It came with a 120/70 - ZR17 58H front tire and a 160/60 - ZR17 69H rear tire. Stopping was achieved via Single 320 mm disc, 4 piston caliper in the front and a Single 220 mm disc, 1 piston caliper in the rear. The front suspension was a WP - 4054 Roma Top adjuster, preload, compression and rebound adjustable while the rear was equipped with a Central shock absorber WP IBS with PRO-LEVER linkage to rear- swing-arm with needle bearing. The 640 Duke II Final Edition was fitted with a 11.3 L / 3.0 US gal / 2.4 Imp gal fuel tank. The bike weighed just 145 kg / 320lbs. The wheelbase was 1460 mm / 57.5 in long.

Photos

Overview

KTM 640 Duke II Final Edition

KTM's Duke was the machine that brought the Austrian firm to the attention of many riders in the late 1990s. Formerly restricted to niche off-road bikes, it was this supermotard-styled bike which gained KTM recognition as a major bike manufacturer. The original Duke, launched in 1994 used a 610cc single-cylinder four-stroke engine in an off-road chassis, equipped with a distinctive twin headlight nosecone and 43cm (17in) wire spoked wheels. Its 41kW (55bhp) power and 145kg (3201b) mass made it an exciting ride, but it was only imported into the UK in limited numbers.

The latest Duke, the 640, was launched in 1999. It has an uprated 624cc version of the old four-valve engine, which produces similar power, but with more torque, in a similar steel-tube cradle chassis. WP upside-down forks and WP monoshock provide excellent handling, while stylish BBS 43cm (17in) cast wheels wear grippy sportsbike tires. A massive 320mm (12.6in) front brake disc is matched to a single four-piston Brembo racing caliper, giving amazing braking power, helped by the tiny 145kg (3201b) mass. The outrageous nosecone is also still there, with a twin headlight design, and sweeping fuel tank. On the road, the Duke excels in tight, twisty city streets or mountain passes, where its quick steering, long travel suspension and amazing brakes all work superbly.

Narrow uphill hairpin bends which can tie a 'proper' race-replica sportsbike in knots are easily dealt with on the Duke.

It is not really suited to longer trips though - there's little in the way of comfort or equipment, and the tiny fuel tank only holds 11.5 Liters (2.5 gal) - barely enough for 160km (100 miles) between refills. The Duke's high-specification chassis parts also have a price penalty - it is an expensive machine, costing as much as some 600cc four-cylinder sportsbikes.{| class="wikitable" |- !Make Model |KTM 640 Duke II |- !Year |2007 |- !Engine Type |Four stroke, single Cylinder. SOHC, 4 valves, engine balancer |- !Displacement |624.6 cc / 38.1 cu in |- !Bore X Stroke |101 x 78 mm |- !Compression |11.5:1 |- !Cooling System |Liquid cooled |- !Lubrication |2 x Eaten oil pumps |- !Induction |Mikuni BST 40 carburetor |- !Ignition |Kokusan contactless DC-CDI ignition with advanced system |- !Starting |Electric & kick |- !Spark Plug |NGK DRBEA |- !Battery |12V 8Ah, maintenance free |- !Max Power |40.1 kW / 55 hp @ 7000 rpm |- !Max Torque |60 Nm / 6.1 kgf-m / 44.3 lb-ft @ 5500 rpm |- !Clutch |Multi-disc in oil bath |- !Transmission |5 Speed |- !Primary Drive Ratio |30:81, straight cut gears |- !Gear Ratios |1st 14:35 / 2nd 15:24 / 3rd 18:21 / 4th 20:19 / 5th 22:18 |- !Final Drive Ratio |17:38 |- !Final Drive |Chain, O-ring 5/8 x 1/4" |- !Frame |Central chrome-moly steel frame |- !Front Suspension |WP - 4054 Roma Top adjuster, preload, compression and rebound adjustable |- !Front Wheel Travel |140 mm / 5.5 in |- !Rear Suspension |Central shock absorber WP IBS with PRO-LEVER linkage to rear- swing-arm with needle bearing |- !Rear Wheel Travel |170 mm / 6.7 in |- !Front Brakes |Single 320 mm disc, 4 piston caliper |- !Rear Brakes |Single 220 mm disc, 1 piston caliper |- !Front Tire |120/70 - ZR17 58H |- !Rear Tire |160/60 - ZR17 69H |- !Steering Head Angle |62.5o |- !Wheelbase |1460 mm / 57.5 in |- !Ground Clearance |250 mm / 9.9 in |- !Seat Height |860 mm / 33.9 in |- !Dry Weight |145 kg / 320lbs |- !Gvwr |350 kg / 773 lbs |- !Engine Oil Capacity |2.2 L / 2.3 US qt / 1.9 Imp qt |- !Fuel Capacity |11.3 L / 3.0 US gal / 2.4 Imp gal |- !Standing ¼ Mile |12.5 sec |- !Top Speed |162 km/h / 101 mph

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