Quarter Straight Rail
R-20
The go-to fix when a loop won't close. The shortest straight.
It comes in 3 versions with different end moldings. Besides tab/slot (the same as an ordinary rail), there is one with tabs at both ends and one with slots at both ends.
The ones with matching ends are not a mistake. When the chains you have extended from both sides meet tab-to-tab or slot-to-slot, slipping 1 of these in between swaps the orientation and lets them connect. It is a tool for matching orientation as much as for matching length.
Dimensions
- Part number
- R-20
- Category
- Basic
- Ends
- ① slot · ② tab
- Shape
- straight 54mm
- Rail length
- 54mm
- Footprint
- 92mm × 38mm
- Flipping
- Can be flipped
Included under the same part number
Same dimensions; only the molding at the ends differs.
- Quarter Straight Rail (tab/slot)Ends slot · tab
- Quarter Straight Rail (tab/tab)Ends tab · tab
- Quarter Straight Rail (slot/slot)Ends slot · slot
Tips for building
- 1/4 the length of a Straight Rail.
Build with these exact dimensions
You can lay out every part, Quarter Straight Rail included, using real-world dimensions. It accounts for the free play in every joint, so you know whether the loop closes before you build.