Turntable run round
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A small turntable as part of a run round loop
Hi All. I have read about using a turntable at the end of a run round loop, as a space saver. It looks okay if you have planned the Layout first? But has anyone tried the idea, and does it limit the size of the Loco? The majority of my Locos are 0-4-0’s or 0-6-0’s which would be okay if I had a “ Room Size “ Layout, but just lately I have purchased some longer Loco’s both Diesel and Electric , which would rule out a small turntable and if one had a large turntable it may spoil the idea. Best wishes Kevin
Staying on the thread Kevin.
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The size of the turntable therefore limits the size of a steam engine that uses it.
With your 0 6 0 and 0 4 0 engines a small diameter turntable would suffice if you had say larger steam engines like a 4-6-2 with a tender you would require a larger diameter turntable.
Brian
Last edit: by Briperran
OO gauge DCC ECOS Itrain 4 computer control system
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Staying on the thread Kevin.
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this one is used in a fiddle yard, but can just as easily be adapted to serve a run round, I believe Bembridge on the Isle of Wight had one for run round
http://yourmodelrailway.net/view_topic.php?id=6273&forum_id=6&highlight=sector+plate
Cheers MIKE
I'm like my avatar - a local ruin!
I'm like my avatar - a local ruin!
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Staying on the thread Kevin.
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They are certainly space savers if you are pushed for space and a wye or runaround are not an option.
You need to plan ahead. You will need some sort of polarity changer for the turntable bridge, especially if you are using DCC sound (in this case an electronic autoreverser), some means of getting power from a stationary object - the track - into the rotating bridge rails, some means of turning the table (usually a DC motor) and indexing the bridge to the entry and exit rails. RTR turntables and wells take most of the work out if the size works for you, home built means lots of physio. Lot cheaper though. Do your research, there are lots pitfalls and challenges in building one of these. First one is cutting a circular hole. The slightest deviation will result in binding on one side and an unsightly gap on the other. Clearance under the board can be an issue depending on how you power the bridge.
I was think the station you are referring to is Ventnor, not Shanklin. Nice chalk quarry with a railway tunnel. I sent you info on this some time ago.
Nigel
©Nigel C. Phillips
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Staying on the thread Kevin.
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In spite of what has been said earlier about double ended diesels not needing to be turne, they would still need to be released to run round their train, so would still have to use the turntable, even if only to switch from the platform track to the release road (which may also have a platform, or not).
http://www.disused-stations.org.uk/n/north_woolwich/
Jeff Lynn,
Amateur layabout, Professional Lurker, Thread hijacker extraordinaire
Amateur layabout, Professional Lurker, Thread hijacker extraordinaire
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Disused Stations: Rothbury Station
Now I've finally started a model railway…I've inherited another…
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Staying on the thread Kevin.
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Staying on the thread Kevin.
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Nigel
©Nigel C. Phillips
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These were the 2 modules i made for the 2010 Ymr Exhibition
Brian
OO gauge DCC ECOS Itrain 4 computer control system
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Staying on the thread Kevin.
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i built them with the general feel of Ranelegh Bridge as when i was a youngster on our London trainspotting days we always had our lunch at Royal Oak underground station platform Which was directly opposite so we watched all the Westerns and Warships being got ready for service from Paddington.
Brian
OO gauge DCC ECOS Itrain 4 computer control system
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Staying on the thread Kevin.
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In answer to your original question, I bashed/scratch built one of 7.5" diameter to go at the end of my last On30 build. This diameter is not available commercially. It saved some 16" compared to a runaround. A custom built one would have been around £350. I spent less than £I00, and that included an electronic autoreverser. DC gearhead motor and DCC track.
Interesting challenge, but sector plates or traversers are easier and faster. Birmingham Moor Street High Level had some traversers that functioned as runarounds for passenger train operation, must be more examples.
The details of how the small turntable was built are described in my On30 project build. So measure the length of your longest locomotive, add 2" , and see if that diameter fits. If so goforit, if not forgedaboutit. If you look at the Noch 3-rail sector turntable that will give you some ideas regarding sector plate possibilities.
Nigel
©Nigel C. Phillips
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Staying on the thread Kevin.
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Nigel
©Nigel C. Phillips
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