Just started work on a boat howitzer for "large" 28s.
The carriage:
This shows a paint brush handle barrel, the tail wheel and the carriage. Brown rivets are "Grandt Line" model railroad bolt heads:
The wheels are Evergreen strip formed on a suitable diameter spool. The spokes are added with Evergreen rod.
I made a jig on a piece of poplar, to allign the hub and some spokes. Shown here is a conventional wheel. The rim is taped to the marked jig, the outer portion of a hub is put onto the drill rod first, the spokes laid in on an angle and the inner hub glued on top of the stack. When removed the wheel has the proper dished shape:
The boat howitzer wheels are actually easier since the spokes are flat to the wheel disk and the outer rim can be drilled to align the spokes.
You can see a couple other projects at:
link
and some Confederate pontoons and a bridge at:
floatingwhitebear.blogspot.ca
Regards, Rob.
