@ Radarek - about 3/32" clearance from track surface.
Ready now for a test run against versions 1 and 2 with my adjust-o-wheelbase square brass tube/piano wire construction and Devised Designs slimline motor pod.
Same motor, a Scalextric 20K red slimline, with the identical 3:1 gear ratio installed.
Body's lower on the chassis than before.
Overall weight's now 78g from 91g. Feels planted and driveable on my little test track.
More telling once I get a few comparison laps on Luf's Big Targa, Chris's Killarney and Roger's Maple Ridge tracks this weekend.
Dan