Our test vehicle the start of the ramp (small wheels)

Test vehicle in progress up the ramp (with course corrections)

Base case with 1:1 gearing between drive and load

Launch alignment and ready for countdown

Our ‘catcher’ intercepts it at the top of the climb and the clock is stopped (large wheels)

Creating more power by using a smaller cog on the drive shaft

Now he can pull the dictionary on a skid

Pulling nicely up the slope

Until we add too much weight to the skid and the front end pops up

Now its getting interesting – three wheels off the ground!

We decide to mod the towing point and lower it down to reduce the moment around the rear axle

It works and the test vehicle can pull the overloaded skid up the plane