Bushman, The reason why it did that, was the rear clutch is torq sensative, and with you allowing the clutch to shift faster with less tension it placed you in high gear faster propelling the sled , the reason it was quicker is you were actually overshifting the sled, taking the bite out of the engine curve, allowing you to hook up better on the start and get out front.
When you went the other way you were staying in the power curve more and not hooking up as well at the start, but once hooked up it gains mph because the longer you are on a given distance the faster your mph can become. The same thing happens when racing on the asphalt, a quick et wont always have high mph because you spent less time building speed and covered the ground in less time.
The thing with roller secondarys are they have a very rapid upshift and backshift(( this is what makes them so awesome for trail riding)) and what happens with the rear clutch being torq sensative is that when your going down a long lake run the the rear clutch senses a loss in torq feedback from engine and it begins to backshift while the front clutch is trying to upshift, they fight each other and it takes a big secondary spring to try and control this with a roller secondary.
When you went the other way you were staying in the power curve more and not hooking up as well at the start, but once hooked up it gains mph because the longer you are on a given distance the faster your mph can become. The same thing happens when racing on the asphalt, a quick et wont always have high mph because you spent less time building speed and covered the ground in less time.
The thing with roller secondarys are they have a very rapid upshift and backshift(( this is what makes them so awesome for trail riding)) and what happens with the rear clutch being torq sensative is that when your going down a long lake run the the rear clutch senses a loss in torq feedback from engine and it begins to backshift while the front clutch is trying to upshift, they fight each other and it takes a big secondary spring to try and control this with a roller secondary.
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