Guidance by Railway Tracks (2016) [video]

#1

Post by well_i_never » Wed, Mar 30, 2022, 4:02 PM UTC

Guidance by Railway Tracks (2016) [video]
youtube.com

Re: Guidance by Railway Tracks (2016) [video]

#2

Post by basicplus2 » Thu, Mar 31, 2022, 7:52 AM UTC

Railway Tyres have this engineered into them to a degree and is known as "Effective Conicity" to help with steering

https://www.wheel-rail-seminars.com/archives/2017/pc-papers/...

Re: Guidance by Railway Tracks (2016) [video]

#3

Post by unwind » Thu, Mar 31, 2022, 8:14 AM UTC

basicplus2 wrote: post #2

Railway Tyres have this engineered into them to a degree and is known as "Effective Conicity" to help with steering https://www.wheel-rail-seminars.com/archives/2017/pc-papers/...

Thanks, as a person working more or less tangentially in rail this was really interesting to just quickly page through. Also loved that the author's last name is "Oldknow", this seems like old wisdom for sure!

Re: Guidance by Railway Tracks (2016) [video]

#4

Post by jeffrallen » Thu, Mar 31, 2022, 8:39 AM UTC

Doo doo, do doo de doo, do doo de doo. Doo doo, do doo de doo, do doo de doo. Doo doo, do doo de doo, do doo de doo. Doo doo, do doo de doo, do doo de doo. ...

Re: Guidance by Railway Tracks (2016) [video]

#5

Post by d--b » Thu, Mar 31, 2022, 9:03 AM UTC

Mandatory Feynman explanation:

https://m.youtube.com/watch?v=y7h4OtFDnYE

Re: Guidance by Railway Tracks (2016) [video]

#6

Post by Cerium » Thu, Mar 31, 2022, 2:31 PM UTC

At the end there is some text "sinusoidal characteristic". This is a control system, and (unlike the system of a bicycle) with increased speeds it will go unstable, the oscillations will continue to increase uncontrolled. This is why faster trains are an engineering accomplishment worth displaying. They require flatter cones which then require straighter track built to higher specifications.