2-stroke

2018 KTM models are hitting the news

The biggest news for KTM this year is the all new 2018 KTM 250 XCW TPI. This is KTM's very first attempt at offering a fuel injected 2-stroke. TPI stands for transfer port injection and according to KTM this system comes with two injectors making for a smoother ride.

They are also boldly claiming that this TPI system will dramatically reduce fuel consumption (Going to be a fun test).

Here are the pictures:

2018 250 XC-W TPI Highlights

NEW 249cc 2-Stroke engine fitted with a patented TPI fuel injection system for perfect fueling at any altitude, no premixing and reduced fuel consumption while still living up to the standard of a KTM 2-stroke.
NEW Cylinder with two injectors placed in the rear transfer ports for excellent downstream atomization of fuel.
NEW EMS featuring a new ECU controlling ignition timing and fuel based on information from 5 sensors reading intake and ambient air pressure, throttle position, oil and water temperature for optimized engine response.
NEW 39mm throttle body by Dell’Orto features a butterfly valve controlled by a twin cable throttle.
NEW electronic oil pump feeds oil from the 700cc oil tank to intake to ensure a perfect fuel-oil mix under any condition while reducing smoking by 50% for up to 5 tanks of fuel.
UPDATED WP Xplor 48 upside-down split front fork with new outer tubes for more sensitivity, less stiction and reduced weight. Revised settings are stiffer as well.
UPDATED WP Xplor PDS rear suspension features stiffer settings while still offering the progressive feel and excellent bottoming resistance only PDS can provide.
NEW radiator guards provide better airflow in muddy conditions.
Engine cases feature a compact shaft arrangement for better mass centralization.
Cylinder with twin-valve controlled power valve for smooth power that can be adjusted within seconds for different track conditions.
Revolutionary lateral counter balancer reduces engine vibrations for less rider fatigue at the end of the moto.
6-speed wide ratio transmission is perfectly suited for off-road duty
Hydraulically operated DDS clutch features a damping system for better traction and durability.
Lightweight Chromoly steel frame provides high torsional rigidity with less longitudinal stiffness resulting in excellent handling and energy absorption
PDS Shock mounting geometry is matched to the aluminum swingarm with a centered location for nearly symmetrical loads to the swingarm.
Forged aluminum triple clamp with handlebar positions and a 22mm offset for precise handling.
ODI grips that feature a lock-on design for the left grip and a vulcanized grip on the throttle side.
“No Dirt” footpeg design keeps the pegs pivot from becoming clogged, ensuring the footpeg is always in the correct position.
CNC machined hubs, high-end Giant rims and Dunlop tires for maximum strength and traction
Airbox and filter design provides maximum performance with fast “no tools” air filter changes.
Bodywork with perfect ergonomics and contact points for maximum control and comfort.
2.4 gallon see-through polyethylene tank provides the range needed from a true READY TO RACE enduro bike.
“No Dirt” shift lever prevents dirt from fouling the lever joint to ensure proper shifting in any condition.
SPECIFICATIONS

Engine Type: Single Cylinder, 2-Stroke
Displacement: 249 cc
Bore/Stroke: 64.4 / 72 mm
Starter: Electric, Lithium Ion 12 V 2 Ah / Kickstarter
Transmission: 6 Gears, wide ratio
Fuel System: TPI, Dell’Orto 39mm Throttle Body
Lubrication: Electronically Regulated Oil Pump
Primary Ratio: 26:73
Final Drive: 13:50
Cooling: Liquid Cooling
Clutch: Wet Multi-Disc DDS Clutch, Brembo Hydraulics
Ignition: Synerject EMS
Frame: Central Double-Cradle Type 25CrMo4 Steel
Subframe: Aluminum
Handlebar: Neken, Aluminum Ø 28/22mm
Front Suspension: WP Xplor USD Ø 48mm
Rear Suspension: WP Xplor PDS Monoshock
Suspension Travel Front/Rear: 300 mm / 11.8 in; 310 mm / 12.2 in
Front/Rear Brakes: Disc Brake 260 mm; 220 mm
Front/Rear Rims: 1.60 x 21” / 2.15 x 18” Giant
Front/Rear Tires: 80/100-21” / 110/100-18” Dunlop GEOMAX AT81
Chain: 5/8 x 1/4 in
Silencer: Aluminum
Steering Head Angle: 26.5º
Triple Clamp Offset: 22 mm
Wheelbase: 1,482mm ± 10 mm / 58.3 ± 0.4 in
Ground Clearance: 370mm / 14.6 in
Seat Height: 960 mm / 37.8 in
Tank Capacity, Approx: 9 l / 2.4 gal
Weight (without fuel), Approx: 103 kg / 227. lbs

PRICE: TBA

All new 2017 KTM mini MX bikes

KTM has released their 2017 minicycles first. I am assuming because of the all new Husky TC250 we will also see an update for all the KTM 2-strokes. Hopefully the new design will make it onto the off road line (XC, XCW). For now here are some pictures and info about the new mini bikes.

The biggest news is that the 2017 KTM 65SX and the 2017 KTM 50SX both are now equipped with WP's AER 35 front forks. Along with new graphics the 50SX mini gets a new shock.

Check out the following pictures (Courtesy of KTM www.ktm.com)

2017 KTM 85SX

2017 KTM 65SX

KTM WP AER 35 air forks

2017 KTM 50SX

2017 KTM 50SX Mini

2017 Husqvarna TC 250

Husqvarna has released their MY 2017 lineup. The biggest news is the all new TC250 2-stroke. 

We will continue to keep you posted as the entire Husqvarna lineup comes available. At a quick glance here are the biggest changes to the 2017 TC 250. The 2017 Husqvarna TC250 two-stroke weighs 211.2 pounds (without fuel). I think this is a couple of pounds lighter than MY2016.

(Courtesy of Husqvarna's website)

• New engine

 

The 250cc 2-stroke engine is the ultimate combination of unsurpassed power and lightweight construction. The simplicity and low maintenance cost of the 2-stroke motor makes it a favourite amongst motocross riders. The new TC 250 engine has a completely new construction featuring a new shaft arrangements for better mass centralisation, a new counter balancer shaft reducing vibration, a new twin-valve controlled power valve and re-worked 5-speed gearbox.

• New Cylinder

The 66.4mm bore cylinder features a newly developed power valve system which delivers smooth and controlled power throughout the RPM range. This can be further customised by simply changing two springs supplied and altering the power delivery for different track conditions or rider preference. The new cylinder and cylinder head incorporate a new water jacket design which guarantees better heat dissipation and improved cooling under the most extreme conditions. New cylinder head mountings secure the engine to the frame while also reducing vibrations for a smooth ride.

• New crankcases

In an effort to centralize mass, the lightweight die-cast engine casings are developed to accommodate new shaft arrangements. The clutch shaft is now 4mm higher while the crankshaft position is also raised 19.5mm centralising oscillating mass and improving ride-ability. Additionally the new counter balancer shaft has been integrated in a very compact manner without compromising the overall design while new engine covers offer better resistance from wear created by riders boots.

• New frame

With years of experience in designing the most advanced steel frames in offroad, the engineers in Research and Development designed a chromium molybdenum steel frame that redefines every structural aspect that benefits handling, ergonomics and packaging. With carefully calculated tortional and longitudinal flex, the frame works in harmony with the suspension to offer sharp handling and superior comfort. These characteristics, matched to a lightweight and compact engine design, offer exceptional handling precision while at the same time increasing bump-absorption and feeling.

• Carbon fibre subframe

The use of carbon fibre strips away weight, improving weight distribution and bringing weight closer to the centre of gravity for precise handling. The composition of the material is 30% carbon fibre and the overall 3-piece construction is remarkably light but also very strong for an overall weight of 1.4 kg. Additionally, a specific rigidity has been calculated in the component for optimal handling and rider ergonomics.

• New exhaust header

• Mikuni Carburettor

MY2016 fuel system was the Keihin PWK 36S AG

• WP AER 48 suspension

 

The WP AER 48 is a new milestone in the development of Husqvarna motocross models. It is safe, lightweight and easy to adjust through a single air valve and supplied fork pump for pre-load and click adjusters for compression and rebound. The system is made up of a set of split-system forks consisting of an air suspension unit and a hydraulic damping unit. The new forks offer a weight reduction of 1.6 kg in comparison to conventional fork systems of MY16. The forks are extremely responsive thanks to friction-optimized surface coating on the outer and inner tube surfaces and optimally designed sealing systems.

* WP DCC rear suspension

The WP DCC rear shock is designed to provide advanced damping characteristics while keeping to a compact and lightweight design. With a pressure balance inside the shock, damping is consistent and results in greater rider comfort and handling. Additionally, the outer surface of the gas reservoir is corrugated and increases cooling. The component is also fully adjustable and matched to a linkage system with a specific geometry to deliver the best possible traction and progression.