Here is the latest plan that I have drawn up. The dark grey is 1" sch 80 PVC, the light grey is 1.5" sch 40. The main outer shaft is 2" sch 40. The blue is foam, the green is the media, and the light grey outline is the cups.
The design is going to be free floating attached to a 1.5" T fitting that is going to have a 1.5" sch 40 piece about 1/2 in longer than the bottom of the rbc. This way if it bottoms out it will still be free floating and spinning. The 1" sch 80 shafts will connect to the outside of the barrel/barrel housing and the 1.5" sch 40 will slide up and down these 2 shafts freely. I decided to use 1" to 1.5" bushing rather than 1" couplers to keep the needle bearings in place since the outside diameter of the bushing is about perfect.
Nothing in the image is to scale; it is just something I whipped up in mspaint to visualize my idea.
Let me know what you think.
