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Author Topic: Turntables- what is the arch for?  (Read 905 times)

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u18b

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Turntables- what is the arch for?
« on: November 24, 2019, 07:47:33 PM »
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Turntables almost all (or often) seem to have an arch in the middle.

What is that arch for?

Lights?

Clearance?

Power pole to run the turntable itself?



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Chris333

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Re: Turntables- what is the arch for?
« Reply #1 on: November 24, 2019, 07:51:59 PM »
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It is so electricity can get to the motor.
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Missaberoad

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Re: Turntables- what is the arch for?
« Reply #2 on: November 24, 2019, 07:52:18 PM »
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Quote from: u18b on November 24, 2019, 07:47:33 PM
Power pole to run the turntable itself?

This... It allows an attachment point for the electric line to the motor that can pivot while the bridge turns...
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Point353

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Re: Turntables- what is the arch for?
« Reply #3 on: November 24, 2019, 10:27:22 PM »
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Who needs an electric motor?

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nkalanaga

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Re: Turntables- what is the arch for?
« Reply #4 on: November 25, 2019, 12:40:42 AM »
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If the TT isn't electrically powered, no arch is needed.  Besides the "Armstrong" type, like the NH above, there were also air-motor driven TTs that ran off the locos brake air.  I've never heard of one, but somewhere I wouldn't be surprised if there was a gas or diesel powered TT.
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