Steve,
The braid from the guide is not permitted to push the front of the car up to give it the 1mm required ground clearance. The surface plate used to measure the 1mm has a large hole in it where the guide would go so it does not affect the measurement of the ground clearance at the front of the car.
https://www.radiokontrol.it/attrezzatura-scaleauto-SC-5003/product/4026250
We are running at 12 volts.
Great questions.
