This is all still in the early stages. The way the driveshaft are angled on the S2 is a result of the design: in order to have the same wheelbase and weight distribution as the B4 (with the S2's batteries in the middle position) and still be able to fit all the parts, sweeping the driveshafts forward was the only way out. A little forward sweep is generally a good thing, but it is on the edge of being too extreme.
The team is now testing various configurations, different combinations of angle and wheelbase, different chassis lengths, etc,... Even different rear arms.
So far, we've concluded:
- S2 works very well on all kinds of dirt and astro
- BUT, it struggles in greasy conditions. 4° toe-in and short wheelbase (mega sweep) is a no-no. 3° toe-in and long wheelbase seems allright. There is a point of no return somewhere, and it's probably those 12° another forum member calculated.
Last weekend at the GP, a standard S2 was great in the dry, but
in the wet, an S2 with the modified chassis and hinge pin braces was miles better. I'm testing both configurations at the euros now (very slippy!!), and the difference between the two is not as big as on greasy astro.
Forward sweep on the driveshafts stiffens up the rear suspension under power. Kind of like anti-squat.
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