Dom's Charger v50 — rear geometry finally sorted

This is version fifty. Not because I’m bad at building — because suspension geometry is hard and I refuse to leave it wrong.

The rear end uses a five-link independent setup. Each wheel moves up and down without shoving the other wheel sideways. On v47 the upper links were too short and the camber went weird under compression. v48 fixed camber but the roll centre was basically on the roof. v49 was close. v50 is the one.

The steering rack sits ahead of the front axle line, same as the movie car. Tie rod length is tuned so the inside wheel turns tighter than the outside wheel in a corner — Ackermann geometry, not parallel steering. Most LEGO cars ignore this. You can feel it when you push it around the kitchen floor.

Front suspension is double-wishbone. The lower arms are longer than the uppers so the roll axis sits low. I used 11L liftarms for the upper links because anything shorter binds at full droop.

Body shell is seven studs wide at the rear quarter — wide enough for the supercharger bump without looking like a balloon. The blower is decorative on this version. v51 might get a working crank. Might.

If you’re counting: v1 was six-wide and had no suspension at all. Progress is measurable.