So at the end of last week I have the helix installed with track but not wired into DCC as yet. I still have to glue the blocks in between the loops in place. The staging deck will be constructed once I finish the signal install.
The sub road base plywood has been reinstalled above the helix, including new timber for the fascia to be re-installed. The track work that forms Carlisle Junction that was removed is also getting done again too.
The last two photos show the limited amount of room between the last helix loop and existing bench work & sub road base plywood, which is just enough to clear a hi-cube boxcar.
Once the track work is re-installed I'll wire up the helix and conduct a test using a four & six axle locomotives and several variants of rolling stock to test out the performance of the helix.