New ladder chassis with increased ground clearance

I decide to remodel the ladder chassis to allow for more ground clearance. The price to pay is worsened bump-steer, but since this is not a fast model the trade-off should be OK.

I did not test it in the field yet, so let me know if you have issues.


You will have to make new linkages:
- rear bottom is 115mm (2x)
- rear top is 109mm (2x)
- front bottom is 96mm (2x)

...between centers.