(F) Small turntable-index lock?

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allthumbs9
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(F) Small turntable-index lock?

Postby allthumbs9 » Wed Dec 09, 2009 1:37 pm

I want to build a small turntable in Gn15. The kind made of metal. It will be "arm-strong" powered.

My question is, on the prototype, did these things have some sort of indexing lock on them to prevent them from shifting as stock rolled onto them? I have never seen photos of such a lock. If they exist, I hope someone will post a picture.

Thanks

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Postby Bilco » Wed Dec 09, 2009 1:54 pm

Go to
http://www.ptitrain.com/reportages2009/cfc09/cfc1.html

'Cliquez' on the arrow to number 31/35 and onwards - lock looks simple, maybe have an operating arm under the baseboard.
Bill

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Too soon old, too late smart.

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Postby commerlad » Wed Dec 09, 2009 4:39 pm

All full size tables have a lock of some kind, From the simplest metal catch on a wagon turntable to elaborate electrical key systems on mainline stuff.

If you put a disc under the center of your table. a sprung wire will locate and lock into holes on the disc to line up with the exit roads and stop any unwanted sideways movement. just release the spring to move to next road where it will stop automatically again.
Sometimes I think laterally, Then I have to get up.

Mark in UK

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Postby Glen A » Thu Dec 10, 2009 3:48 am

I know this doesn't answer your question about locking pins, but did you see Andy's turntable?

http://forum.gn15.info/viewtopic.php?t=5403

I can well imagine you could lock it with a simple piece of wire in a hole.

I think this is a great low tech solution, that is buildable for the average person like me (who doesn't have all the expensive toys like lathes, milling machines, grinders and air compressors).

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Postby gfadvance » Fri Dec 11, 2009 7:29 pm

Sorry meant to post this earlier.

Image

As you can see its just a U shaped rod that slides to lock turntable to exit track ... on the Heatherslaw Light Railway
Gordon F


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