Why doesn't it short out

Started by Bikeracer, February 08, 2012, 10:56:10 PM

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Bikeracer

February 08, 2012, 10:56:10 PM
An example of my elektrickery ignorance....

Steel wheels on a steel axle,how does the electricity know to go up to the pickups rather than just shorting across the axle ?


Allan
I'm not a complete idiot..some bits are missing.

EtchedPixels

#1
February 08, 2012, 10:59:47 PM
Quote from: Bikeracer on February 08, 2012, 10:56:10 PM
An example of my elektrickery ignorance....

Steel wheels on a steel axle,how does the electricity know to go up to the pickups rather than just shorting across the axle ?


Allan

The axle is insulated on one side or both from the wheel with a thin plastic insert.
"Knowledge has no value or use for the solitary owner: to be enjoyed it must be communicated" -- Charles Pratt, 1st Earl Camden

EddieA

#2
February 09, 2012, 06:06:57 PM
 :) Unless of course it is a 12inch to the foot wheelset in which case it does 'short out' otherwise signalling/track circuiting doesn't work and Network Rail etc would have a few problems?  :)

OK off to look for my flack jacket and tin helmet, and also remove my 'smarty pants'! :smiley-laughing:

"I owe the discovery of Uqbar to the meeting of a mirror and an encyclopaedia".
(Jorge Luis Borges - 'El jardin de senderos que se bifurcan' 1941)
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