The 3,000 rpm test seems a logical way of ascertaining eligibility. After all, it directly assesses whether there's a performance benefit or not. But is it fair ? Well I'm not really sure... and somebody here may be able to answer.
Supposing you grease the clutch bearing, precisely as BRP have instructed. By the principle of centrifugal force, that grease will move radially outwards and will be caught by the drum where it will change the characteristics of the clutch bite point.
The volume of grease you apply to the bearing [1], and the length of time your motor has been running afterwards [2] will determine how much grease gets onto the drum. So the question is, what are these parameters [1] and [2] for a failure of the 3,000 rpm test to occur ? If on using reasonable measures for [1] and [2] the 3,000 rpm test will be comfortably passed, then there isn't an issue. If not, then we do have a serious eligibility problem in the Rotax classes.
Personally I'm not interested in cheating as kart racing is first and foremost fun for me. However I will ensure that my clutch bearing is greased as it needs to be... and I don't care whether I'm disqualified afterwards or not. A DQ is a lot less painful on my pocket than a new crank... and I'm sure there are many honest competitors out there that would concur.
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