Are you referring to how much offset there is between the tooth tip and the counterweight? Because the maximum (theoretical, and so in unrealistically perfect conditions) bite is just 23mm (6mph and 7k on bar). That's based on the lip/edge you're going to hit entering the sweep of the tooth the instant after it passes by, getting full depth bite on the next rotation. A 15-20mm offset will give a very marked single tooth effect and a higher MOI, as there is more mass further from the shaft.
To contain the amount of energy in a bar like this won't be easy! :P





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