R
Guys there’s been some discussion about our multi rate springs so I thought this might help clear the air and explain why we do what we do. There’s a tremendous amount of engineering that goes into designing a spring both from a packaging standpoint and from a performance-durability standpoint. Snowmobiles can be difficult to design around simply due to the envelope that you work in from the amount of working travel a spring needs to have too the linkages that need to be packaged around it all plays a huge part in the given characteristics that you’re looking for. As most know our springs be it duel or triple rate are wound in one continuous coil which is quite different than the individual stacked springs that you see in the market place today. Our springs not only eliminate the need for heavy transition collars but eliminate the mechanical bind and parasitic loss that you get from the collar wearing on the side of your shock body.
As you can see in chart 1,2 and 3 the blue line (stock) is what we refer to as a linear spring. These springs are very basic in design and let’s just say it’s a 100# per inch of travel that would mean that every inch of travel it would increase by 100lbs. so 1.0 = 100 2.0 =200 3.0 = 300 and so on until you reach your total working travel. What a multi-rate spring allows us to do is decrease the initial rate by a given value and increase the second and third rates by a different value. As you can clearly see on graph #1 at about 4.0 inches of travel is a distinct knee at which point the spring transitions into another rate and the spring becomes significantly stiffer. The key is to know when and how hard to transition the spring this is done based on motion ratios and other key formulas along with an abundance of in field testing. The last two graphs depict our soft spring compared to the production spring. Graph #2 is a simple overlay of the two springs and you can see the difference in the load throughout the entire range this spring will allow you more compliance over smaller events due to the lighter initial rate. The main take away from graph #3 is that even though you have a softer initial rate you can significantly alter the load by simply adding preload to the spring. This is why it’s crucial to adjust your springs in small increments (like 1/8th inch) at a time until you find your sweet spot. I hope this helps take some of the mystery out of multi rate springs and if you want more detail let me know and if this is a complete waste of your time let me know. Thanks RPS
TRS spring kits $280.00 (four TRS springs firm or soft, cool adjuster wrench, sled decals, tuning notes)
Reserve now to eliminate back orders.
As you can see in chart 1,2 and 3 the blue line (stock) is what we refer to as a linear spring. These springs are very basic in design and let’s just say it’s a 100# per inch of travel that would mean that every inch of travel it would increase by 100lbs. so 1.0 = 100 2.0 =200 3.0 = 300 and so on until you reach your total working travel. What a multi-rate spring allows us to do is decrease the initial rate by a given value and increase the second and third rates by a different value. As you can clearly see on graph #1 at about 4.0 inches of travel is a distinct knee at which point the spring transitions into another rate and the spring becomes significantly stiffer. The key is to know when and how hard to transition the spring this is done based on motion ratios and other key formulas along with an abundance of in field testing. The last two graphs depict our soft spring compared to the production spring. Graph #2 is a simple overlay of the two springs and you can see the difference in the load throughout the entire range this spring will allow you more compliance over smaller events due to the lighter initial rate. The main take away from graph #3 is that even though you have a softer initial rate you can significantly alter the load by simply adding preload to the spring. This is why it’s crucial to adjust your springs in small increments (like 1/8th inch) at a time until you find your sweet spot. I hope this helps take some of the mystery out of multi rate springs and if you want more detail let me know and if this is a complete waste of your time let me know. Thanks RPS
TRS spring kits $280.00 (four TRS springs firm or soft, cool adjuster wrench, sled decals, tuning notes)
Reserve now to eliminate back orders.
