GAP,
Thanks. That machine vs. hand cutting probably explains while all of the photos I have from here show what amount to rolling haystacks instead of comparatively neat loads like the one you shared. I had wondered why that was the case.
My own project proceeds apace. In fact, the basic frame is now drying outside! I ended up using 1" scraps for my journals, drilling them at 4mm as Korm suggested, inserting a bit of brass tubing in one side, and capping the outboard side wiht a 3mm grommet, again per Korm’s suggestion. The boys helped on an off, with Oldest Son cutting some of the tubing:
Yes, they are a bit crude, but the wheel sets roll nicely. I had originally thought to drill the whole 1/8" up from the bottom, but that would’ve left no room for drilling error and have let a weaker journal. Instead, I drill them dead center and figured we’d see how she lay from there.
The next step, which was more fun, was to get the appropriate measurement for the two side frames and, of course, see how she lays sitting on our high tech journals! Both my helpers took a crack…
…and the end result were side-beams set 1/8" in from the edge of the 4" end beams. Kid-zilla inspects the mock-up:
There is very little clearance between the flange and where the deck will be. I may have to lay a plank along the fore-and-aft beams to ensure I don’t have any issues. The final mock-up, with the centerline of the journal grommets set 1" back from the end ofthe side-beams are below:
You’ll note by shear dumb luck the coupler aligns perfectly with the HLW mini to the left. That is why I’d rather build up from the frame rather than shim down.
I have since glued some washers to the back fo the wheel sets per your suggestion, GAP. I’ll glue the journals on tomorrow after the glue on the frame is good and dry. I have to locate some wood screws for the coupler, too. With luck, I’ll have this prototype sans deck on the rails by next weekend. If it tracks OK, then we’ll convert the remaining timbers into frames for the rest of the fleet.
Thanks for the tips along the way!
Eric
P.S. Tim, thanks for your generosity, but I think we are over the hump with a workable plan.