Maybe I’m not describing it clearly. There is nothing slow about it. Imagine one of those clown acts where the clown has a bicycle with off-center wheels and the bicycle goes up and down with each rotation. Or, imagine a bicycle with an egg-shaped wheel. In my limited knowledge of CVT, I’m picturing a pulley that instead of expanding and contracting evenly, it opens up more on one side than the other, so as it turns, the chain goes up and down in the roll. And it does this all the way up the hill. I wish I had the skills and tools to make an animation here. Imagine the power applied as half a sine wave. Since the rollers must be able to expand and contract to change the width, the two sides must be separate. What if one of those sides doesn’t move evenly allowing the gap between it and the opposite side to vary in width? In fact, to a lesser extent, this may also explain the approximate displacement of the case.
Since it’s only happened 3-4 times in the last 10 months, there’s not much chance I’ll take the service manager to show him what I mean.
We will be happy to hear your thoughts