Flexible weight distribution chassis for the B4/B4.1

[Skidrow]

The spark for this project was given a couple of months ago when a fellow racer snapped his original B4FT chassis as a way to make sure that he wouldn't have to go through the stripping down of his car within a Sunday morning long event due to chassis breakage
I thought that we could add some tuning aids in the process through a flexible weight distribution chassis . He is mostly racing dusty outdoors tracks with the occasional carpet event every 3 months apx. and wanted to stick with rear motor set ups for the time being.
With this design he will be able to change from the Durango B3/B4 conversion style "saddle packs all the way pushed against the servo" to an intermediate T-style arrangement and back to the classic inline set-up all in seconds