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Werks Racing is pleased to introduce its’ new "Power Clutch" line of off-road clutches. One of the worlds first low cost adjustable clutches designed from the ground up specifically for the demanding 1/8th scale nitro off-road racing market.
The Werks Racing Power Clutch is a four shoe design which allows for the maximum possible amount of contact area between the clutch shoes & clutch bell. Because this is a truly adjustable clutch, it is possible to easily adjust the spring tension to change engagement point, their by minimizing the need as with traditional clutches to slip the clutch to improve acceleration. This reduces the tendency for the clutch shoes to develop excess heat and fade during long main events. This was often the case in the past when racers looking for the "extra edge" in performance with traditional clutches were using lightened shoes with heavy springs or even going as far as using aluminum clutch shoes.
Now with the new Werks Racing "Power Clutch" adjustable clutch if you want a later engagement point for more punch simply tighten the nut on the end of the clutch and you are done! Three springs are available; gold standard (soft), green (medium), and silver (hard). These different tension springs allow you to tailor the clutch to your racing conditions. Shoes are available in carbon, red rulon or Teflon materials.
Adjusting Shoes and Springs
The Carbon shoe has the moderate wear and is a common first choice, it has a linear throttle feel to it, with a moderate amount of grip
Rulon on the other hand has higher wear, this is especially dependant on the amount of slip used. It does however have the most grip. Be aware, because of this, the clutch can feel like its getting heavy (engaging early), This is because of the increase in grip because of heat. Base your adjustment on a hot clutch, 1 minute. This is an excellent choice on a high traction tracks assuming you put the time in.
Teflon has the least grip with excellent wear, it is best suited on low traction conditions or for engines lacking bottom end. It allows the engine to spool up before the clutch locks.
As mentioned begin with the soft 1.3mm gold spring. Depending on the inner-diameter of your clutchbell, the shoes should begin to engage just above idle. As you tighten the adjusting nut, 1/3rd to 1/2 turn at time, the engagement point will occur later, resulting in improved acceleration. This is because engagement is getting closer to the beginning of the powerband.
If you don’t have the experience with the feel of your vehicle’s acceleration, another method is by observing the exhaust smoke. The very moment you hit the throttle, smoke should be coming out. If there is hesitation, or you see no smoke for 5-10 feet, tighten the adjusting nut, the clutch is heavy (engaging too soon). If you have to tighten the adjusting nut 3mm down from flush, use the next hardest spring (dark green).