January 24, 2009
Owners of Ski-Doos know how sweet it is to be able to adjust the shift RPM using their TRA clicker adjusters on the primary clutch. This varies the geometry of the cam arms and rollers so the loading effect of the engine is varied to better match the load of the transmission to the power of the engine, helping to keep the engine spinning at the desired shift RPM.
But, TRA clickers can only do so much. Often times, you want to set the clickers as low as possible to load the engine, get the pipe hot and make all the power you can. Using the TRA clickers isn’t really the ideal way to compensate for changing snow conditions, either. That’s where the ability to vary the helix angle comes into play.
Clutch tuners have long understood the relationship between the primary clutch and the secondary clutch. The primary clutch on the engine controls the engine speed and is RPM sensitive, where the secondary clutch controls the shift ratio and senses the torque from the track. They must both work together, and to some degree each one can be used to “tune” the transmission system. Changing the helix angle changes the systems responsiveness to the load being presented by the track. The secondary must balance the pull from the track with the pull (power) from the engine and let the system operate in the proper ratio, while the primary keeps the engine operating at the right speed, dependent on the throttle position.
So if we can have an adjustable primary component, why not an adjustable secondary component? That’s where Shockwave Performance has made their name, providing sled tuners with easily adjustable helix components so you can adjust the helix ramp angle, instead of replace your helix.
We’ve been using Shockwave adjustable helix components for years on various Yamaha and Arctic Cat models. As the snow gets deeper, or as it gets wetter or as the temperature changes, the load from the track changes and so does the ideal requirement of torque sensing in the secondary. Tuners for years have disassembled their clutches and installed a helix with a different ramp angle to vary both the upshift and backshift characteristics. A steeper helix angle lets the clutches upshift, or open up faster, during acceleration. However, it also makes the system less responsive to an increase in load from the track, so it slows the backshift (downshift). This tends to also reduce the engine RPM.
A flatter or more shallow helix angle slows down the upshift, but lets the system become more responsive to the load from the track, so backshifting is improved. This also tends to increase the engine RPM.
So you come to a lake, hard packed, flat and fast, where a steeper helix angle would benefit your performance. With the Shockwave Adjustable-Ramp Helix, you can quickly dial in a steeper helix angle to let the system upshift harder and faster. Simply open the side panel and turn the dial with an allen wrench. There is no disassembly required. The clutch and the Adjustable Ramp Helix stay assembled in the snowmobile. The allen wrench fits into an adjuster ring. Each full rotation of the adjuster ring is approximately 4 degrees of helix ramp angle change. Thus, each 1/4 rotation is approximately 1 degree. Turn the adjuster ring counter clockwise to let the sytem upshift harder and faster, which will also lower the operating RPM.
Or the next day, it snows six inches of wet heavy snow and your sled isn’t pulling the full shift RPM; the system is being loaded too hard, too fast. Again, open the side panel and turn the adjuster ring clockwise for a flatter helix angle, which will also raise the engine operating RPM. Backshifting response is greatly improved and your engine spins at the right RPM.
New for 2009 is the Shockwave adjustable helix for the Ski-Doo REV XP models fitted with the new QRS secondary clutch. Like the other Shockwave adjustable helixes, you can quickly and easily vary the helix angle in a matter of a minute or two. The ramp angles can be varied by 16 degrees! We really like the adjustability and tenability they provide, and wish that every sled had this feature. Helixes are offered in straight and variable ramp angles, great for trail sleds and a must-have for mountain sleds that experience a greater range of operating conditions within a matter of minutes.
The Shockwave Adjustable Ramp Helix for the Ski-Doo QRS secondary retails for $249. To get yours, contact Shockwave Performance at 763-493-2076 or visit www.shockwaveperformance.com
January 23, 2009
Most of us who own and build high-powered snowmobiles know one of the weakest links in the entire drivetrain is the primary clutch, and its ability to transfer the power from the engine through the CVT belt-drive system. The basic primary clutch design used in today’s CVT drive system has been around for over thirty years, and has remained relatively unchanged for the duration. When this design was introduced, being able to transfer 100 HP was about all that was required of the system. 
Now days, with the likes of big-bore four strokes, turbochargers, superchargers and 1000+cc monsters that can make upwards of 200 (and even 300) HP, the power transferring capabilities of the simple CVT primary clutches has been brought up to and past their original design intent. Being able to grab the belt and keep the slippage to a minimum is critical to getting the power from the crankshaft to the ground, and to keep the drive belt from disintegrating into a cloud of black smoke. This has opened the door for many new clutching approaches and designs, including the new Rage VIII 8-arm primary clutch from Supreme Tool, Inc.
Instead of the traditional 3 cam arms, or the popular 4-cam arm designs found on many of the higher power engines using a CVT belt drive system, the Supreme Tool Rage VIII distributes the power through eight cam arms. All eight arms engage the belt at the same time, providing nearly double the amount of force to the drive belt than a four arm design. Once the movable sheave has shifted (closed) 1/2 to 3/4 of its travel, the four supplemental cam arms sign off (quit applying force) due to the centrifugal force that holds them suspended above the movable sheave rollers. This allows the four main cam arms to finish the shift and maintain the proper operating rpm.
This design allows the Rage VIII primary to grab and hold the drive belt on high-powered machines, instead of slipping the belt. The added force during the first portion of the shift curve eliminates the biggest problem that racers of the high-powered sleds have had for years – belt slipping and over revving during hard acceleration through the first portion of the shift curve! This is where the primary is also working with a smaller contact patch, due to the smaller belt diameter at the lower shift ratios. 
You can now change and control the initial shift curve in two new ways. First is by adding more mass to the supplemental arms, second is by changing the diameter of the supplemental roller diameter. It’s really simple. By decreasing the roller diameter, the supplemental arms let go of the shift earlier; by increasing the roller diameter, the supplemental arms shift longer before releasing.
The Rage VIII a-arm clutch uses most any cam arms offered on the market as the main flyweights, utilizing Supreme Tool’s retrofit pin design. The four supplemental arms will be provided with the Rage VIII. They will be capable of having extra mass (weight) added, allowing you to adjust them for that killer holeshot. Three different sizes of rollers are also provided to compliment the tuning capabilities of the system.
Supreme Tool has spent many hours testing this package on their track dyno, as well as on the ice strip in the winter and out on the grass drag strip during the summer months. They are convinced that if you have the need or desire to compete, you will sooner or later discover what this system has to offer, as the Rage VIII has demonstrated its capability to squeeze and control the drive belt in high-powered clutching applications.
The Rage VIII 8-arm clutch system will be available in 8”, 8.25” and 8.5” diameters and will fit all OEM crankshaft tapers. It will be offered in a screw-on or quick-change spider design as well. To order your or to learn more contact Supreme Tool, Inc. at 248-673-8408 or visit their website at www.supremetoolinc.com
January 23, 2009
If you’ve ever been faced with an engine quitting out on the trail or up on the mountain, there’s a good chance it was because of spark plug fouling. But new technology is making today’s snowmobile spark plugs more efficient, which reduces fouling, helps engines last longer, and keeps the environment cleaner.
Here’s how. In the last 100 years, the only real advance in spark plug technology has been to add special metals to extend life and to learn how to make them cheaper – not better. The standard J-wire electrode has been just that – standard.
New advanced designs, such as E3 DiamondFIRE spark plugs, offer a faster forming and larger flame kernel, and therefore more complete fuel combustion. The result: more power, cleaner engines, and reduced emissions. The open, diamond-shaped architecture of the electrode is the secret behind E3′s ability to provide cleaner, more complete fuel burn.
The efficiency and performance of the plug is mostly determined by the shape of the electrode. When a spark plug fires, the spark seeks the edges of the electrode surfaces. Traditional J-wire plugs have limited edge surface area. But the “open architecture” of E3 spark plugs provides more sharp edge surface for better spark generation and less wear.
The E3 DiamondFIRE spark plugs feature a diamond-shaped electrode with a revolutionary “Edge-to-Edge” design. The unique geometry of the E3 provides optimized spark paths well into the useful life of the spark plug. This patented design delivers forced edge-to-edge spark discharges, which are proven to be the most efficient and effective way to get a spark to leave a surface. DiamondFIRE technology allows the fastest flame-front to grow unimpeded towards the piston to create a more complete burn of the fuel/air mixture in the cylinder.
Flame shape is critical, too. Old-technology J-wire plugs create a flame shape that moves sideways, outward from the electrode. But the open, diamond configuration of E3 spark plugs shapes the flame, aiming it accurately toward the piston head and fuel/air mixture to create higher combustion pressure, practically perfect fuel burn, and greatly reduced deposits on the cylinder heads and electrode surfaces.
There is another advantage to DiamondFIRE technology, and it has to do with what spark plugs are made of. The limited edge surface of the J-wire electrode causes the spark to strike the same places over and over, so the metal wears down relatively quickly. Many manufacturers use precious metals such as platinum or iridium, because they’re attempting to extend plug life. The DiamondFIRE design of E3 spark plugs accomplishes extended life without the use of special metals… because the geometry and shape of the electrode provide more spark surface, and less overall wear.
Laboratory testing showed that E3 spark plugs improved power output in typical engine operating ranges, and reduced fuel consumption. The more completely you burn the fuel, the greater the power output – and the less hydrocarbon residue is left behind to foul plugs – and stop engines cold.
To learn more about this new technology (and find out where to buy) at www.e3sparkplugs.com
December 20, 2008
The latest advances in snowmobile clothing take the comfort of the rider to even higher levels, thanks to “Comfort Mapping Technology”. This new method of designing and building outerwear comes from the combined efforts of Klim USA and W.L. Gore, makers of the famous GORE-TEX waterproof and breathable membranes.
Matching the Clothing
to your Body
To best understand Comfort Mapping and the benefits it provides, one first needs a crash course in human physiology. Your body has built-in systems to control and regulate its thermal requirements. Different areas of your body play different roles in this regulation. Some parts are designed to allow heat to escape (like sweat glands that cool your body) while others insulate and protect vital organs from excessive cold. We all know that some areas of our body sweat more than others. Places like your armpits, your groin, and your feet have a much higher concentration of sweat glands than do other places on your body. Klim and W.L. Gore have performed research into the science of thermal regulation and understands the very specific requirements. (Some of this experience comes from their working hand-in-hand with the U.S. Military forces, providing them with the best gear in the world to keep our armed forces dry and comfortable.) For example, they know that the temperature of your skin varies in different places, as your body has varying levels of insulation in different places.
What they have achieved with the exclusive Comfort Mapping Technology is the design and production of clothing that works together with the body’s natural, temperature-regulating processes, not against them.
Core Technology – GORE-TEX
Having windproof and waterproof materials is only part of the solution; these materials must be properly designed, constructed and applied. They must be “breathable”, and this is what sets the GORE-TEX brand apart from the other “waterproof” membranes. A plastic bag is waterproof, but does not allow the steam, or water vapor to escape, so in a short period of time your skin becomes wet and then the rapid cooling occurs, as well as your becoming uncomfortable. GORE-TEX fabrics have a very specific pore size, which keeps the larger molecules of water on the outside, but allows the smaller molecules of steam and water vapor to escape. Your body warmth helps push this steam out through the fabric, and you stay dry and comfortable.
Klim has spent years testing and developing their riding gear that provides the utmost protection and comfort. In order to meet their exacting design criteria, a garment must achieve perfection in seven key areas: waterproofness, breathability, mobility, protection, fit, durability, and functionality.
Comfort Mapping
In traditional clothing, the garment liner is a one-dimensional piece of fabric that treats the varied thermal requirements of different parts of the body the same. Now Klim takes this selective approach to the next level. Each and every piece of the snow suit has been closely scrutinized. Comfort Mapping Technology creates a garment liner that meets the specific needs of each region of the body. Understanding these differing needs allows them to carefully select varying degrees and types of insulating materials into strategic areas of the clothing. This helps effectively manage the body’s thermal requirements by allowing better breathability in those areas that need to breathe, and better thermal protection in those areas that need to be protected. This ensures you will experience the most comfortable temperature level in any condition without sacrificing mobility.
Three Layer Technology
Three-Layer Construction plays a vital role in applying Comfort Mapping technology to the clothing. A three-layer fabric is made up of three different pieces of material each having a specific function. These three layers are permanently laminated together to form one integrated piece. The outer fabric (or face fabric) is usually a durable piece of (colored) nylon that protects the riding gear. The middle layer is a GORE-TEX® membrane that is durably waterproof and breathable. The inner layer (or backer) is where you really benefit from Comfort Mapping; this is called the “backer material” and is the true secret to the Comfort Mapping Technology, and is what makes it unique and superior. A thicker inner layer is used in areas where the body needs more insulation. Likewise, a thinner material is used in areas that tend to build up excess heat. This approach provides the ability more precisely control the thermal properties of the garment and create the world’s most comfortable, technical and durable pieces of outdoor clothing.
Compared to the waterproof clothing on only a few years ago, the new garments from Klim have evolved to providing the best possible rider comfort in our extreme riding conditions. Staying dry is a key element to staying warm and comfortable, but when the exertion level increase, then allowing moisture to evacuate is a critical element. The Comfort Mapping combines the best of all requirements, providing the thermal protection where needed, yet also providing the moisture venting where needed. Your body temperature will stay within a tighter range, thus you will be more comfortable. That means staying dry from the outside (waterproof), staying dry from the inside (breathability) and keeping the wind out (windproof). The end result is a higher level of performance and comfort, along with the durability, fit and mobility that you have come to expect from Klim products so you can better enjoy your ride.
For 2009, Klim offers their Comfort Mapping Technology in their industry-standard Valdez parka featuring a GORE-TEX Pro Shell, and the matching industry-standard Togwotee bib. Retail pricing on these premier products is up only very slightly, despite the outstanding improvements in performance; the 2009 Valdez parka retails for $419.99, and the 2009 Togwotee bib retails for $399.99. Ask for them at your Klim dealer, or contact Klim at 208-552-RIDE (7433). You can also visit their website to learn more at www.klimusa.com
The GORE-TEX® membrane contains over 9 billion microscopic pores per square inch. These pores are 20,000 times smaller than a water droplet, but 700 times larger than a water vapor molecule. This makes the membrane completely waterproof from the outside, but still able to allow perspiration to escape from the inside. As added protection, an “oil-hating” substance is integrated into the GORE-TEX® membrane, preventing the penetration of harmful body oils and insect repellents.
Only GORE-TEX products offer the W.L. Gore brand promise; “If you are not completely satisfied with the waterproofness, windproofness, or breathability of your GORE-TEX outerwear, we will repair it, replace it, or refund your purchase price.”
January 9, 2007
Sylvain Laflamme of Laflamme Racing claims the new M-Tech head is the most amazing bolt-on for the 800′s he has ever seen, PERIOD! Easy to install, go down 1 clicker on your clutch, fits all 800 twins, And it looks great! They also have some excellent Ski-Doo clutch kits available.
Laflamme Racing was started as a part time business 5 years ago. After 17-18 years on the race circuit, a position still held today as a member of the Ski-doo X-Team, Sylvain was getting more and more requests for clutch kits and performance inquiries. Business grew until he started doing only snowmobile work in the winter, and now it is a full time job.
At Laflamme Racing they trail ride 2000-3000 miles every winter, so they know what the customer wants and expects. Check them out for more info www.laflammeracing.com.
December 29, 2006
Crazy Mountain Motorsposrts, makers of the Crazy Mountain Xtreme deep-snow specialty sleds, continue to refine their CMX Belt Drive system that eliminates the heavy rotating mass of metal gears and link-style chains. The lightweight Gates Polychain cogged belt and cogged pulleys provide the gear reduction needed, and do so with incredible reliability. The massive weight reduction (rotating mass) allows for quicker acceleration, and that means track speed for climbing higher and further up the hill. Standard issue on all Crazy Mountain Xtreme mountain sleds, conversion kits are offered for select OEM mountain sleds as well. Contact Crazy Mountain Motorsports at 406-686-4921 or visit crazymtn.com.
December 22, 2006
To give young enthusiasts a way to stand out with their Freestyleâ„¢ sled, Ski-Doo is offering an ever-growing selection of Freestyle-specific accessories.
The Freestyle Performance Kit upgrades your Session and Backcountry packages for harder riding, even racing. It includes chassis reinforcements for durability and Pilot 5.7 dual-runner skis for incredible cornering and handling.
For a total snocross look, the Performance kit swaps out the stock handlebars for Hi-Risers, including riser block, straight handlebar, Acerbis® hand deflectors and handlebar pad.
Freestyle TechnoBee [great for Backcountry package] or Camo [Session package] decals complete the look. Suggested Retail Price: $639.97 USD/$779.97 CDN
November 16, 2006
Hygear has a dual rate spring kit for the Yamaha mono-shock rear suspension system. The spring kit is designed to provide more progression to help eliminate bottoming out while keeping the ride plush. With the dual rate spring system it is possible to set the proper ride height and increase the bottoming resistance deep in the stroke. The kit is also available for the Ohlins electronic shock and the Kayaba RA shock. Hygear Suspension PH: 607-533-7434
www.hygearsuspension.com
November 15, 2006
Check out the Feature article from the September 2006 issue of SnowTech on the Airwave Suspension from TeamFAST and Airlink Performance. Click Here!
November 15, 2006
The industry’s first GORE-TEX riding boot is “Guaranteed to Keep You Dry®â€!
Whether you live to carve through fresh powder all day long, pound out a 200-300 mile day or just ride casually through winter’s beauty, you’ll do it with warm and dry feet in Klim’s new Adrenaline Boot. The Adrenaline Boot is the only snowmobile boot on the market with a GORE-TEX membrane and W.L. Gore and Associates’ famous “Guaranteed to Keep You Dry†promise.
“Our research shows that about 90 percent of competitive boots are neither waterproof nor breathable,†explained Klim President Justin Summers. “But the real soaker for snowmobilers is perspiration, and even those boots that are waterproof won’t let that escape.†The Adrenaline Boot’s GORE-TEX membrane and multi-layer perforated construction meets Gore’s stringent standards for breathability. That means when sledders get moving and their feet start to sweat (more than a pint of sweat a day) the Adrenaline Boot will draw that moisture out to the world, keeping socks as warm and dry as when the ride started!
“We built the Adrenaline Boot for serious snowmobilers because we designed them for ourselves,†said Summers. Consumers will find a tough, abrasion-resistant composite outsole with a Kicker Toe to protect the boots from wear caused by traction strips and tunnel bolts. “Our new polyurethane midsole resists packing out better than competitive EVA midsoles,†he added. “We put our Adrenaline Boots on some of the most aggressive, gear-abusing riders we know for thousands of miles to prove out their durability. These boots are made to thrive in the harsh usage serious snowmobilers put their gear through.â€
The new Adrenaline Boot features 600 grams of 3M Thinsulate™ insulation. This offers excellent warmth protection without adding bulk. “The Thinsulate material we use in the Adrenaline Boot is one of the thinnest and toughest insulations on the market. It takes a beating and retains its loft without retaining moisture,†said Summers.
Riders will appreciate Klim’s attention to ankle support and flexibility. The Adrenaline boot is not as stiff as many of the “snowcross†or “snowboard†boots currently on the market. “One of our goals for the Adrenaline Boot was to design it so that people can actually walk in them,†said Summers. “We started with a molded composite skeleton for lateral stability and then worked on the right cutout shape to allow good forward flexibility at the ankle. Owners will be very happy with the walkability of the Adrenaline Boot.â€
Klim brought some of the first snowmobile-specific GORE-TEX jackets and pants to the market, and now offers the first Gore-Tex boot to snowmobiling. “We have a very strong working partnership with the team at Gore,†noted Summers. “That relationship has allowed us to offer snowmobilers the best, most technically advanced riding garments in the world.â€
The Adrenaline Boot will be available as Klim Dealerships in the Fall of 2006. Offered in sizes ranging from men’s 7-14 with a retail Price of only $159.99. Visit www.klimusa.com to find the nearest dealer.
Newer Posts »
