Realistic Code 83 Profile
The 2.1-millimetre profile is lower and more prototypical than traditional Code 100 track.
ROCO LINE Code 83 Two-Rail Track Without Roadbed
ROCO H0 Track Without Roadbed
An illustrated overview of the ROCO LINE track without roadbed verified at Modellbahnshop: standard straights, diagonal and compensation track, 920-millimetre flexible track, radii R2 to R10, standard, curved and slip turnouts, crossings, turnout drives, rail joiners, buffer stops and complete layout track sets.
H0 gauge
1:87 scale
16.5 mm track gauge
Code 83 / 2.1 mm
two-rail operation
without roadbed
Verified range as of:
Realistic Code 83 Track for a Custom Roadbed
What is ROCO LINE without roadbed?
ROCO LINE without roadbed is an H0 two-rail track system with a 2.1-millimetre nickel-silver rail profile. The rails and wooden sleepers do not include a permanently moulded ballast body.
The system belongs to H0 gauge at a scale of 1:87 and has a model track gauge of 16.5 millimetres. It can be used on analogue or digital two-rail layouts.
Standard straight G1 is 230 millimetres long. Half and quarter straights, a diagonal straight and the 920-millimetre G4 straight complement the length grid.
The 920-millimetre F4 flexible track permits freely selected radii, transition curves and individually cut track sections.
Because the track has no roadbed, sound insulation, ballast colour, track-bed width, trackside paths and embankments can be designed to match the represented prototype.
Flexible Track for Custom Radii
The long F4 track permits smooth transition curves and flowing track alignments.
Custom Roadbed
The height, colour and width of the track bed can be adapted to a main line, branch line or station.
Standard Lengths, Parallel Radii and Slender Turnouts
ROCO LINE Radii and Turnout Geometry
Twelve 30-degree curves or twenty-four 15-degree curves form a complete circle. R9 and R10 complement the geometry of the 15-degree turnouts.
| Geometry | Radius or Length | Angle | Product | Typical Application |
|---|---|---|---|---|
| G1 | 230 mm | – | 42410 | Standard straight and basic grid |
| DG1 | 119 mm | Diagonal | 42411 | Diagonal connection in turnout formations |
| G½ | 115 mm | – | 42412 | Half standard straight |
| G¼ | 57.5 mm | – | 42413 | Short length compensation |
| G4 / F4 | 920 mm | Straight or flexible | 42406, 42400 | Long routes and freely shaped track |
| R2 | 358 mm | 30° | 42422 | Compact inner circle |
| R3 | 419.6 mm | 30° or 7.5° | 42423, 42409 | Second parallel circle and partial curve |
| R4 | 481.2 mm | 30° | 42424 | Visible routes |
| R5 | 542.8 mm | 30° | 42425 | Generous outer parallel circle |
| R6 | 604.4 mm | 30° | 42426 | Long vehicles and main lines |
| R9 | 826.4 mm | 15° | 42427 | Slender partial curve |
| R10 | 888 mm | 15° | 42428 | Reverse curve for 15-degree turnouts |
| W15 | 230 mm / radius 873.5 mm | 15° | 42442, 42443 | Stations and sidings |
| W10 | 345 mm / radius 1,946 mm | 10° | 42490, 42491 | Slender station approach |
| Curved Turnout | Inner and outer R2 curves | 30° | 42466, 42467 | Junction within a curved route |
Plan the Substructure and Roadbed
A level route, sound insulation and a properly constructed ballast bed remain necessary.
Select a Turnout Drive
Side-mounted manual and electric drives as well as underfloor drive 10030 are available.
Compensate for Profile Transitions
Transition joiners 42612 connect the 2.1-millimetre profile to track with a 2.5-millimetre profile.
Verified Modellbahnshop Products Only
ROCO LINE Without Roadbed by Product Group
Every card links directly to its product page at modellbahnshop.de. Search terms can include “42400”, “G4”, “R9”, “Wl10”, “curved turnout”, “underfloor drive”, “transition joiners” or “Martinstadt”.
No manufacturer pages, third-party retailers,
425xx roadbed track, geoLINE products or replacement
images from similar products are used.
No verified ROCO LINE product matches this search.
From Flexible Track to a Fully Ballasted Layout
Planning and Laying ROCO LINE Without Roadbed Correctly
Flexible track, profile transitions, turnout drives, power feeds and subsequent ballasting should be planned together before the track is permanently secured.
Visible Main Lines
Flexible track and large radii permit smooth, prototypical track alignments.
Stations and Turnout Formations
Turnouts with angles of 10 and 15 degrees permit compact or particularly slender routes.
Modular and Sectional Layouts
Precise straights and individually cut flexible track make defined module transitions easier.
Step 1
Match Vehicles and Radii
Check the minimum radius of the longest locomotives, coaches and multiple units.
Step 2
Prepare the Substructure and Track Centreline
The route and sound insulation must be level, free from twisting and aligned precisely.
Step 3
Plan the Drives and Electrics
Power feeds, isolation points and underfloor drives should be marked before the track is secured.
Step 4
Test First, Then Add Ballast
Test every route before applying ballast and adhesive.
Avoid Common Track-Construction Errors
- Forcing flexible track under tension into tight curves
- Positioning both rail joints at the same point in a curve
- Using R2 without testing long vehicles
- Planning turnout drives only after ballasting
- Providing too few power feeds
- Allowing ballast adhesive to enter point blades and tie bars
Guidance About Turnouts and Flexible Track
Cut and secure flexible track without tension. Use ballast particularly sparingly around frogs, tie bars and turnout drives.
Answers About Flexible Track, Radii and Turnout Drives
Frequently Asked Questions About ROCO LINE Without Roadbed
Answers about track gauge, rail profile, straights, flexible track, radii, turnouts, drives, profile transitions and layout track sets.
What track gauge does ROCO LINE use?
The track has a gauge of 16.5 millimetres and belongs to H0 gauge at a scale of 1:87.
How high is the rail profile?
The nickel-silver profile is 2.1 millimetres high and approximately corresponds to Code 83.
Does the track include an integrated roadbed?
No. The ballast bed is constructed separately on a prepared route.
How long is the standard G1 straight?
Product 42410 is 230 millimetres long.
How long are G½ and G¼?
Product 42412 is 115 millimetres long and product 42413 is 57.5 millimetres long.
How long is flexible track 42400?
F4 flexible track is 920 millimetres long.
Which fixed radii are available?
The overview covers R2 with a radius of 358 millimetres through to R10 with a radius of 888 millimetres.
How many 30-degree curves form a circle?
Twelve 30-degree curved track sections form a complete circle.
What geometry do the W15 turnouts use?
Products 42442 and 42443 are 230 millimetres long, have a diverging angle of 15 degrees and an approximate diverging radius of 873.5 millimetres.
What geometry do the W10 turnouts use?
Products 42490 and 42491 are 345 millimetres long, have a diverging angle of 10 degrees and a radius of 1,946 millimetres.
Which side-mounted turnout drives are available?
Products 40295 and 40296 are electric drives. Products 40297 and 40298 are manual drives.
Is an underfloor turnout drive available?
Yes. Product 10030 can be installed horizontally or vertically beneath the layout.
How is the track connected to a 2.5 mm rail profile?
Transition joiners 42612 compensate for the change from a 2.5-millimetre to a 2.1-millimetre rail profile.
Which layout track sets are included?
The overview includes the Andreastal, Martinstadt and Theisensee track sets.
Is ROCO LINE with roadbed included in this overview?
No. The product cards exclusively contain ROCO LINE track without roadbed from the 424xx product family and matching accessories.
Further Modellbahnshop Sections
Related Topics for Your H0 Layout
ROCO Manufacturer Range
Discover vehicles, track and digital technology.
Straight and Curved Track
Compare further H0 track systems.
Turnouts
Select further left-, right- and curved turnouts.
Crossings
Compare crossings and slip turnouts.
Track Accessories
Add drives, joiners and electrical equipment.
Track Sets
Discover complete packages for layout plans.
Plan a Model Railway
Define the area, radii, station and electrics.
Model Railway Guide
Basic guidance about track construction and layout planning.
From Flexible Track to a Fully Detailed H0 Layout
Plan radii, turnout drives, the substructure, power feeds and maintenance access together.