Now some may notice there's an issue here, the car actually touches the ceiling when at the height needed for the roll over jig.
And I still have another 35mm to add for the castor wheel clearance..
Luckily for me, once the car is spun upside down, I will gain around 300mm ceiling clearance! (hopefully)
This does mean the car will need to be spun around often, but that's why I made it as robust as possible.
With both ends on, I got the measurements from underneath and made the bracing parts to hold the two frames together to aid with rigidity when I am rolling the jig in and out of my garage.
I had aimed to get the car upside down by the end of the year, I had it all ready to do on NYE but just ran out of time in the end.
I took the opportunity to clean out the garage
I'll try again next year