A Capacitor Discharge Unit (CDU) is a device that can be used in conjunction with a point motor in model railways to...
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Under what circumstances should I consider using a Capacitor Discharge Unit (CDU) with a Point Motor?Read more -
What is a superglue activator?Read moreA superglue activator, also known as a cyanoacrylate (CA) accelerator, is a chemical agent designed to speed up the...
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How do I test the width between the wheels of my engines?Read moreThe best way to check the wheels of your locomotives is to use a tool called a back to back gauge. They are...
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Why are ships' hulls painted red beneath the waterline?Read morePainting ships' hulls red beneath the waterline serves a specific purpose and has been a longstanding tradition in...
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What is Sandite?
Sandite is a solution made up from antifreeze, sand and steel-shot (tiny round steel grains). It is used on the UK rail network to combat that age-old-problem of "leaves on the line".
Leaves on railway tracks can cause massive disruption even though trains weigh several hundred tons or more. This is because train wheels can easily slip on the mulch that compressed wet leaves turn into if left unattended.
Another problem is when leaves insulate track from the metal wheels of the train. This connection is vital as the train wheels and axles are what creates an electrical circuit between the two parallel rails and therefore lets the signal box or operations room know where the train is. Without it the train simply disappears from the control panel.
Special trains equipped with Sandite application facilities operate during the autumn period across the network. Train staff are made aware of track stretches vulnerable to mulch build-up by a series of black on yellow warning signs advising operators when the stretch is approaching, when to commence and when to end the application of Sandite.
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