Metal railwheels

Metal railwheels:
Make T-90 more realistic to move
- More weight

Metal swing arms:
- Normal screws with nylocnuts give stronger fixing
For stronger fixing of metal swing-arms:
Stainless steel tubes
- Outside diameter 4 mm
- Inside diameter 3 mm
- Lenght 6,2 mm
- Not easy to lathe, is viscous material
- Aluminium is too soft material
- Brass (messing) is perhaps easier to cut

Obs: 3 mm diameter holes:
- Must be drilled in lower hull
- The screws fix the reinforcing and hull