To do this same idea with FasTrack would be harder: 4 diameters
- O36
- O44 (compound of O36 and O48, I have done O44 compound)
- O52 (compound of O48 and O60, I have not done O52 compound, the O60 sections don't have 1/2 or 1/4 sections)
- O60
The layout would be a bit smaller, and the clearances tighter (polar is compressed, but would have to check the passenger car overhang).
Turns out there is an O54 about with FasTrack compound, but not a good O52. I would rather have the larger clearances anyway. So I think I could do:
- O36
- O45 Compound O36&O48
- O54 Compound O48&O60
- O63 Compound with O60& O72 1/2
Perhaps when I have a bit of time.