Track system · TT scale
Peco TT: track pieces, radii and turnouts
Peco TT is a two-rail track system without roadbed for TT scale.
The Trackplanner catalogue lists 13 pieces: 4 straights, 3 curves, 1 flex track, 4 turnouts and 1 crossing. All curves have a radius of 310 mm.
Key facts
| Scale | TT scale |
|---|---|
| Rail system | two-rail |
| Roadbed | no roadbed |
| Status | current — in production and in the shops |
| Turnout motor | sold separately: drive PL-10 |
| Pieces in the catalogue | 13 |
| Radii | 1 · 310 mm |
| Straight lengths | 59 · 118 · 236 mm |
| Turnout angles | 11.25° |
Pieces by type
| Type | Count |
|---|---|
| Straights | 4 |
| Curves | 3 |
| Flex tracks | 1 |
| Turnouts | 4 |
| Crossings | 1 |
Radii
| Radius | Angle | Articles |
|---|---|---|
| 310 mm | 45° · 22.5° · 11.25° | ST-1250 · ST-1251 · ST-1252 |
Helix kits for this system
These kits have a radius that matches one of the system’s curves (within 5 mm). The helix assistant in Trackplanner checks whether the clearance is enough for your rolling stock.
| Kit | Fits | Gradient | Clearance | Buy |
|---|---|---|---|---|
| Gleiswendelshop (Tobias Fischer) TT helix, R11/12, single track (2–8 turns) | for 31.0 cm | 5.13 % | — | From the maker |
Turnouts and crossings
| Article | Type | Angle |
|---|---|---|
| SL-U1291 | Turnout right | 11.25° |
| SL-U1292 | Turnout left | 11.25° |
| SL-U1295 | Turnout right | 11.25° |
| SL-U1296 | Turnout left | 11.25° |
| SL-U1294 | Crossing | — |
All pieces
| Article | Type | Dimensions |
|---|---|---|
| SL-U1240 | Straight (end piece) | 27.5 mm |
| ST-1270 | Straight | 59 mm |
| ST-1271 | Straight | 118 mm |
| ST-1272 | Straight | 236 mm |
| ST-1252 | Curve | R 310 mm · 45° |
| ST-1251 | Curve | R 310 mm · 22.5° |
| ST-1250 | Curve | R 310 mm · 11.25° |
| SL-1200 | Flex track | 914 mm |
| SL-U1291 | Turnout right | 11.25° |
| SL-U1292 | Turnout left | 11.25° |
| SL-U1295 | Turnout right | 11.25° |
| SL-U1296 | Turnout left | 11.25° |
| SL-U1294 | Crossing | — |
Dimensions in mm, angles in degrees, from the Trackplanner catalogue. Where the data does not give a value unambiguously, the field stays empty.
Track plans with Peco TT
The gallery has 4 public track plans built with Peco TT. These are the ones it recommends right now:
Changes
12 October 2026
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SL-U1291 Appearance
Turnouts and crossings were missing sleepers, mostly near the joints. The gaps are closed, and the sleepers there are spaced like on the rest of the track.
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SL-U1292 Appearance
Turnouts and crossings were missing sleepers, mostly near the joints. The gaps are closed, and the sleepers there are spaced like on the rest of the track.
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SL-U1294 Appearance
Turnouts and crossings were missing sleepers, mostly near the joints. The gaps are closed, and the sleepers there are spaced like on the rest of the track.
-
SL-U1295 Appearance
Turnouts and crossings were missing sleepers, mostly near the joints. The gaps are closed, and the sleepers there are spaced like on the rest of the track.
-
SL-U1296 Appearance
Turnouts and crossings were missing sleepers, mostly near the joints. The gaps are closed, and the sleepers there are spaced like on the rest of the track.
8 October 2026
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SL-1200 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
SL-U1240 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
SL-U1291 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
SL-U1292 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
SL-U1294 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
SL-U1295 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
SL-U1296 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
ST-1250 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
ST-1251 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
ST-1252 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
ST-1270 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
ST-1271 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
-
ST-1272 Appearance
Sleepers and rails brought in line with the prototype: sleepers spaced 0.60 m apart, rails placed so the gap between them is exactly the track gauge. Connectors and track dimensions are unchanged.
5 October 2026
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SL-U1291 Appearance
Sleeper layout tidied: duplicate sleepers of overlapping routes removed, long turnout timbers, gaps closed.
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SL-U1292 Appearance
Sleeper layout tidied: duplicate sleepers of overlapping routes removed, long turnout timbers, gaps closed.
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SL-U1294 Appearance
Sleeper layout tidied: duplicate sleepers of overlapping routes removed, long turnout timbers, gaps closed.
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SL-U1295 Appearance
Sleeper layout tidied: duplicate sleepers of overlapping routes removed, long turnout timbers, gaps closed.
-
SL-U1296 Appearance
Sleeper layout tidied: duplicate sleepers of overlapping routes removed, long turnout timbers, gaps closed.