2008 KTM 690 Duke

.OrgOwner · 10-13-2007, 7:21 PM

The KTM 690 Duke is almost in a class all of its own.

KTM claim the 65 HP (48 kW) engine is the most powerful street-legal single of all time. The bike is heavily styled on the company's top-selling 990 V-twin fuel-injected Super Duke.

KTM Duke 690 features:

Tubular space frame
Superior suspension components from WP
Stable ergonomics
Universal capabilities
State of the art LC4 engine technology
Unrivalled performance
Minimal weight
ENGINE

The powerful heart of the new 690 Duke is the ultra-modern LC4 engine with 654 cc, which is currently serving as the role-model in the large-volume, single-cylinder, four-stroke category. It distinguishes itself through state-of-art technology, low weight, its very compact construction and above all through its outstanding performance data, attaining a maximum of 65 HP (48 kW).

OHC Cylinder Head

An overhead camshaft operates the four valves (extra lightweight, hollow-shafted valves on the exhaust side) by means of two weight- and rigidity-optimized rocker arms. In combination with the compact combustion chamber, this construction makes incomparable performance and the greatest reliability possible, as well as making servicing simple, due to the slanted fitting of the cylinder head cover.

Clutch

The APTC anti-hopping clutch efficiently prevents the rear wheel from chattering during braking. Under load, the system increases the pressure on the clutch linings, whereby the hardness of the clutch springs and consequently the hand grip strength needed to operate the hydraulic clutch were able to be significantly reduced in comparison with conventional systems.

Engine Management

The LC4 engine is supplied via an electronic injection system, which features a 46-mm throttle plate cross-section, automatic cold start, idle-speed regulator, lambda control and altitude compensation. The EPT System (Electronic Power Throttle) produces a very homogenous power output, because the position of the throttle plate is electronically controlled in addition to the manual operation of the throttle.

fl-929 · 10-13-2007, 7:26 PM

That is dead sexy

slickwill · 10-13-2007, 7:42 PM

I like it and I'm picky.

.OrgOwner · 10-13-2007, 7:52 PM

Yeah and I am checking my finances, I could live with another KTM ..

1morebike.com · 10-15-2007, 2:18 AM

its growing on me.

.OrgOwner · 10-15-2007, 2:23 AM

I'm thinking a 690 single with such light weight and loads of grunt has got to be a whole lot of fun.

UncleJesse954 · 11-05-2007, 2:22 AM

i agree with everything above

UncleJesse954 · 11-05-2007, 2:23 AM

now aprillia needs to do that with their 550 twin

.OrgOwner · 11-05-2007, 3:01 AM

Quote:

Originally Posted by UncleJesse954

now aprillia needs to do that with their 550 twin

Yeah they do but first they need to get that 550 engine to hang together. By all reports it's a pig in terms of reliability, even the dealers I have spoken with have confirmed this. The 450 on the other hand is meant to be a real winner.

UncleJesse954 · 11-06-2007, 10:34 PM

and the japs need to follow suit. get that xr400 drz 400 crap outta here and put a real dirt bike (engine) on the road.

UncleJesse954 · 11-06-2007, 10:37 PM

no offense to drz owners but you know you wish it was an RMz dual sport. or honda crf dual sport.

UncleJesse954 · 11-06-2007, 10:40 PM

my dirt bike would make a sweet dual sport if it had 5th and 6th gear like every following year did. damn first model year was the only 4 speed

slickwill · 11-07-2007, 4:46 PM

How much torque does this thing have?

.OrgOwner · 11-07-2007, 4:53 PM

Being a 690 single it's going to be pretty strong, 67Nm at 5500 rpm is what I have read. if there is one thing KTM know how to build it's single cylinder 4 stroke. The LC4 engine has a great reputaion.