Londontram Posted November 6, 2021 Share Posted November 6, 2021 (edited) Can I ask you kind people what you think is a comfortable turning circle radius for trams fitted with Bec type Motor bogies. A typical first radius curve has an approximate 38cm diameter would it be feasible to bring this down to say 20cm to 30cm what are you thoughts and experiences. Thank you Steve Edited November 6, 2021 by Londontram Link to post Share on other sites More sharing options...
thirty2a Posted November 23, 2021 Share Posted November 23, 2021 I did Hongkong style oval in 30cm wide but they are 4 wheelers and can take it, bogie cars need double that really at least I think. Tony 1 Link to post Share on other sites More sharing options...
Joeh260 Posted December 17, 2021 Share Posted December 17, 2021 It all depends what your running. I had a Liverpool bogie car that could get around a 310mm curve with only the occasional derailment. If your running 4 wheel trams then you should get away with it easily, with 8 wheelers I would personally avoid but is possible to go around 300mm. Link to post Share on other sites More sharing options...
roythebus1 Posted January 5, 2022 Share Posted January 5, 2022 I've got some Hartel track and many of the continental articulated cars it was supposedly designed for won't go round the sharp curves. Turning circle for buses is generally around 56'-60', so 120mm radius. Link to post Share on other sites More sharing options...
roythebus1 Posted January 6, 2022 Share Posted January 6, 2022 I've asked the question of my friend Tony Hultman who is engineer for the Gothenberg Tramways museum fleet. The tightest radius they have is about 17.5m and that is in the depot. Radius is measured to track centre. That works out to about 230mm/9" in 00 gauge and a bit less in H0. 200mm/8". What your trams will actually negotiate is down to your practical experience, but curves of say 6" radius ought to be possible. Link to post Share on other sites More sharing options...
roythebus1 Posted January 6, 2022 Share Posted January 6, 2022 (edited) ISTR this subject was discussed on here before and the answer was nobody seemed to know. But the suggestion was to get a large scale OS map from NLS from the 1920's, find a sharp curve and work out from the map what the radius is. It should be easy if you have the Templot track planning software on your computer, it's free to download and use. Edited January 6, 2022 by roythebus1 Link to post Share on other sites More sharing options...
Lord of Narnia Posted January 20, 2022 Share Posted January 20, 2022 I’ve just ordered a BEC 7000 series PCC for my Brussels themed layout. I’ve got a 600mm wide board to provide the turning loop on so I’m hoping that will be sufficient. Link to post Share on other sites More sharing options...
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