Curved Slope Rail
R-18
A slope that climbs and descends while turning. A and B are mirror images; you can't flip one over to stand in for the other.
4 of them climb 1 Block Pier tier while turning half a circle (180°). When there is no room for a straight slope, this is where you gain height.
A and B have their tabs and slots reversed at the ends. If they weren't, you couldn't build a hill that climbs on A and descends on B (the two tops would fail to mesh). That is why the climb and the descent need separate parts.
Dimensions
- Part number
- R-18
- Category
- Slopes & elevated
- Ends
- ① tab · ② slot
- Shape
- radius 216mm · 45°
- Rail length
- 170mm
- Footprint
- 191mm × 101mm
- Rise per rail
- 17mm
- Foot
- Has a built-in foot one Mini Pier tall on the higher end (can't be removed)
- Flipping
- Can't be flipped
Included under the same part number
Same dimensions; only the molding at the ends differs.
- Curved Slope Rail AEnds tab · slot
- Curved Slope Rail BEnds slot · tab
Tips for building
- Connect 8 of these curving the same way and they close a full 360° loop.
- 4 of these climb one Block Pier tier (66mm).
- Like the real part it can't be flipped, so left/right is decided when you place it.
Build with these exact dimensions
You can lay out every part, Curved Slope 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.