Adhesion is Adhesion !!

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#1
Though most of us subconsciously already know this from day 1 in the hobby, it's still something when you actually ponder it; the very fact that our model locos adhere to the rails thru thee very same science/mechanix as the 1:1 scale to gain traction and overcome inertia !! Big or small, it's the same !! That's so cool when ya really think about it, huh ?! M
 

tootnkumin

Well-Known Member
Staff member
#2
Also the reason, as a 12yr old, with my first OO loco, with a cast metal shell, I liked the weight to size ratio in my hand. Felt like a real minature of a full size one. And of course, weight is the deciding factor (unless it has rubber tires) to how well it pulls loads up grades.
 

Iron Horseman

Well-Known Member
#3
Though most of us subconsciously already know this from day 1 in the hobby, it's still something when you actually ponder it; the very fact that our model locos adhere to the rails thru thee very same science/mechanix as the 1:1 scale to gain traction and overcome inertia !! Big or small, it's the same !! That's so cool when ya really think about it, huh ?! M
I remember an article a long time ago (late 1960s I believe) that had the actual math for adhesion of steel wheel on steel rail. They went on to contrast that with the formulas for that various model railroad wheel types on brass and nickel silver track.
 



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