Weight on Z AXIS WITH COUNTERWEIGHT SPRINGS Lowrider CNC

Hello V1Engineers, am planning to do a little modification to my lowrider cnc, i wanna use a bigger router, possibly of 4.8kg on z axis, while i plan to use countersprings to reduce on the direct weight on the z axis, am seeking advice on whether the router weight will also affect the movement on the y axis (which has one motor) plus x axis (2 motors).

reason am planning to use a bigger router is to make use of a bigger vbit, for wooden engraving, especially cabinets.

I don’t think a larger router will fit in between the rails. The power is not needed, and the size is surely to be detrimental to performance.

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