 |
Cheltenham Society
of Model Engineers |
Next Public Afternoon
(1330 - 1600hrs) |
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| Track Issues |
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Below is listed some useful information regarding the laying of curved track using a straight edge and offset, and a table of minimum track radius for a given locomotive wheelbase.
|
| Curve Radius |
Offset Dimension |
| 70ft |
1.75" |
| 65ft |
1.875" |
| 60ft |
2.0" |
| 55ft |
2.187" |
| 50ft |
2.437" |
| 45ft |
2.75" |
| 40ft |
3.062" |
| 35ft |
3.5" |
| 30ft |
4.062" |
| 25ft |
5.0" |
| 20ft |
6.187" |
5"G Locomotive (assumes 4.875" across flanges)
|
Curve Radius |
Wheelbase A |
Wheelbase B |
45ft |
11" |
22" |
40ft |
10.5" |
21" |
30ft |
9,5" |
19" |
25ft |
8.625" |
17.25" |
20ft |
7.75" |
15.5" |
15ft |
6.75" |
13.5" |
|
7.25"G Locomotive (assumes TBD" across flanges)
|
Curve Radius |
Wheelbase A |
Wheelbase B |
45ft |
TBD |
TBD |
40ft |
TBD |
TBD |
30ft |
TBD |
TBD |
25ft |
TBD |
TBD |
20ft |
TBD |
TBD |
15ft |
TBD |
TBD |
|
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