--- In [email protected], "Arden Goehring" <[EMAIL PROTECTED]> wrote: > I think it is true that our toy trains are "very lightweight" compared to the > prototype. Any other mathematicians out there? Cheers...Ed L.
Density is a constant and since density is mass divided by volume we have to scale mass by the volume factor i.e. 64 cubed. The whole 48000 pound car scaled to S weighs about 2.93 ounces. Therefore the scale weight on each axle ought to be 0.73 ounces or 0.366 ounces per wheel. Scaling down the real thing produces much lighter empty vehicles than any model. If you subjected the real thing to some of the accidents that models are subjected to the car would be reduced to matchwood. The models are proportionately much stronger because they are more heavily built. Looked at another way a 40' car in S weighted to NMRA standards would weigh 5.75 ounces. Scaled to the prototype the car would weigh 94208 pounds. Heavy for an empty car but possible for a loaded one. The poll results are in....... To REPLY to the list, use REPLY ALL, to reply to the sender, use REPLY. I do NOT know if this works on all e-mail software, but it works on some of the most common ones. For those of you on DIGEST mode, all REPLY messages go to the list. Change your membership, change your message settings, use our CALENDAR, view shared files or photos, view the list archives, GO TO http://groups.yahoo.com/group/S-Scale/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
