@EggsOnToast The thread from 2014 is here New and Improved Lift Design!!! just remember to not reply to it.
The thread has some good commentary and is worth reading.
After you read the thread post back here if you still want help building it. You will need to double up on the gears, before the double wide gears we put them side by side. A single gear won’t support the weight. Remember to use the steel axles for strength. You are also going to need to build a box beam (two 2x20 that are separated by spacers) the VRC version uses C-channel for rigidity. So building your own ridged beam is key.