Clutching
Bikeman Performance Polaris General / RZR Stage 1 SNYPR Clutch Kit Clutching Clutching
Polaris General / RZR Stage 1 SNYPR Clutch Kit
UTV Gun Accessories,This Stage 1 clutch kit includes exactly what is needed to adjust your RZR 900 primary clutch. This kit includes our magnetically adjustable Goldstar clutch weights. These weights offer a superior profile for big accelerations. They are very easily adjustable thanks to snap-on magnets. The kit also includes our custom primary spring which improves clutch downshifting and helps maintain peak RPM without as much fade as the factory spring. If you have a 2015 model, UTV salvage parts online, 2010 UTV parts, Utah UTV parts, Western Impact UTV plow parts, UTV parts and accessories, for even better results, use our repair kit. Stage 2 or Stage 3 clutch!
TERMINOLOGY
It is important to understand your Snypr weights and terminology. There are four quadrants in the Snypr weight. Each quadrant has a specified taskthat. The table below shows each quadrant and shows the effect of each quadrant as speed increases. At 0% shift, your clutches are in the home position and in the lowest gear. At 100% shift, your clutches are fully shifted to the highest gear, the speed may increase above this point, but only from an RPM exceeding the target maximum power.
Image A
The HEEL - The force of the heel weight is applied instantly once the weight of the clutch overcomes the preload of the primary spring. This will have progressively less effect as you get closer to maximum speed.
The TIP - The force of the tip weight will gradually increase as the speed increases.
The SNYPR HEEL - The Snyper heel weight will have little to no force until the middle of the shift. After half a change, the strength will appear quite quickly but will not be worthonly about half the weight in the Snyper's tip.
The SNYPR TIP - The Snyper's tip weight will have little or no force until mid-stroke. change. After half gear, the force will appear quickly and will have a similar effect as the weight in the tip.
ATTENTION OF YOUR TARGET RPM
Each engine has a maximum horsepower and a maximum torque. The graph below shows a hypothetical peak hp and low torque. The goal of your clutch is to reach maximum torque very quickly, then build the revs up to maximum power while loading the engine. This will provide the fastest acceleration and best feel. The RPM should stabilize at your maximum power RPM.
Image B
Green line = Ideal Shift - The ideal shift will reach maximum torque rpm very quickly and then increase the maximum power rpm while loading the engine in prproducing torque while reaching maximum power. Maximum power rpm should be reached 30-40% while shifting. If your machine shifts like this, you're set up perfectly.
Red line = RPM above target - RPM above target may feel very responsive, but will likely be much slower than an ideal gear change. Excessive revving is also harder on your engine. To bring your RPM back to maximum, add weight located centrally between the heel and toe.
Yellow Line = Below Target RPM - Being below the target RPM can seem lazy and unresponsive and will likely be a lot slower. Lower than target RPM can also increase fuel efficiency and, in some cases, reduce wear on engine components. To increase the RPM evenly throughout the shift, remove some weight locatedin the center between the heel and toe.
TAKEOFF FROM STOP
Belt slippage and wear often occur during takeoff. otherwise known as Holeshot in the racing world. Takeoff corresponds to the first 30 to 40% of the shift. Under varying terrain conditions, the load on the belt during the section will change dramatically due to resistance. Larger tires can also have a significant impact on takeoff load. The table below shows different scenarios. Descriptions of the scenarios and how to adjust your weights are below the table.
Image C
Green line = Ideal - No modification needed
Line red = Overflow – This condition must be resolved. Overshoot is caused by slipping or undertraveling when the clutch is first engaged. This is easy to fix when using Snypr weights as they generally haveThere is also additional weight in the heel section compared to non-Snypr weights and more mass potential. To resolve this condition, add weight to the heel quadrant until it responds like the green line.
Yellow line = Undershoot - This condition will feel lazy and lack responsiveness and is easy to correct when using Snypr weights. Undershooting can also increase knock due to too slow an increase in rpm. To fix this, move some weight lower from the heel and toe to the heel and toe of the Snypr evenly.
LEFT RPM OR DROP RPM
The RPM should remain fairly constant on 4-stroke applications and a slight creep/rise is acceptable on 2-stroke since the pipe heats up and the RPM sweet spot shifts slightly. Below is a graph showing the RPM fluctuation and decline. Below the table isa description of the changes to be made to control each situation.
Image D
Green line = Stable - No changes necessary, this is ideal.
Red Line = RPM Fluep - On a 2-stroke this is OK but generally no more than 100-200 RPM above maximum power. On a 4-stroke, you want the revs to be stable. If you have too much diet creep, you can tame it by adding weight to the Snypr tip or adding weight to the tip. NOTE: Once the clutches are completely removed, the RPM will always increase 1 to 1 with MPH no matter what you do with your clutch weights. Make sure you are not trying to adjust your weights to adjust after the full gear change.
Yellow line = RPM drop - The RPM drop usually causes the vehicle to react, but then disappears towards the higher MPH. It can also increase engine knock by reducing engine speed.tor. It's an easy fix, what are UTV parts, just remove a little weight from the Snypr locations and if necessary add a little to the heel and halfway to the toe.
Features:
- Kit fits 2015-later RZR 900 models
- Achieves peak rpm
- Easily adjustable to suit tire size or other modifications
- Holds peak RPM better
- 2% more power to the ground with our SNYPR weights compared to our Gold Star weights
- Works well with stock modified engine weights
- Essential when using our tunes and other modifications
Includes:
- BMP SNYPR adjustable weights
- Primary spring
- Configuration sheet
- Polaris General XP 1000
- Polaris RZR 900
- Polaris RZR S 900
- Polaris RZR S 1000
