View single post by Si.
 Posted: Tue Dec 19th, 2017 06:45 pm
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Joined: Thu Feb 23rd, 2012
Location: London
Posts: 3947
" Go and read paragraph 5 of RP25 out loud.
Then, if you understand just a bit of dynamics,
give a reason why that small centering force can compensate the drag of a e.g. Standard H0 coupler "

Oh well looks like the N.M.R.A. don't know their monkey-railroading from mechanics. :dope:

I've mailed them with your corrected spec. Helmut. ;)

- - - - - - -

Other than that ...

... it seems to ME that the RP25 coning in small-scales is actually VERY important indeed !

I haven't ever noticed any "drag" from a properly installed HO Kadee.



There is of course somewhat of a "dynamic" difference ...

... between a speeding express train of 40' boxcars ...

... and a clunkin' funkin' On30 Porter with a few 4-wheelers ! :slow:


' Mysterious Moose Mountain ' - 1:35n2 - pt.II

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
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