Proper weight for rolling stock

Discussion in 'HO Scale Model Trains' started by RobL, Dec 24, 2006.

  1. RobL

    RobL New Member

    In doing some test runs on my track, I noticed some of my rolling stock was wobbling along the rail to varying degrees... some very little shake, some exhibited an obnoxious amount of shake. In reading some reviews in Model Railroader, I noticed they talk about the weight being under or over by xxx ounces. I can tell that my cars that wobble are lighter than those that do not wobble.

    My question is, does anyone have a table that states what the proper weight is supposed to be for various sized HO equipment? I would like to get rid of the wobble, but at the same time not make the cars so heavy that my engines have a hard time pulling them up the grades.

  2. LongIslandTom

    LongIslandTom Member

    NMRA's recommended car weight chart:

    Also, you might want to check the bolsters on the trucks. If the bolsters are too loose and the trucks have too much play, that would contribute to the wobble. You might want to see if you can tighten that up some.

    Hope this helps!
  3. RobL

    RobL New Member

    Excellent! Thanks much. I will check the trucks too... I know some of them seem loose, so that combined with the proper weight will hopefully solve the wobble.

    Thanks again!
  4. Russ Bellinis

    Russ Bellinis Active Member

    The correct mounting of your trucks should result in a "3 point" suspension system. You achieve that by tightening one truck so that it swivels freely, but does not rock. The other truck is tightened the same way, then back off slightly to allow just a little rocking. Also, check your trucks carefully. Make sure that the wheels spin freely without wobble in the truck side frames. Make sure the trucks are not bent to allow "crab walking" of the entire truck. Most freight car trucks are plastic casting, and defects are always a possibility. Most manufacturers will stand behind their products and replace defective trucks. If you don't find anything wrong with the trucks make sure there is no casting flash or other problems with the bolster on the bottom of the car that rocks.
  5. Gary S.

    Gary S. Senior Member

    I had the same problem with a couple of cars. They had Proto2k metal wheelsets. I changed them out to Intermountain and the problem was solved. Of course, I have other P2K wheelsets that are just fine. Anyway, you may want to check for bent axles or mis-aligned wheels. What you can do is just put different wheelsets on the trucks and see if it still wobbles. That will narrow down the area causing the problem.
  6. msowsun

    msowsun Member

    Dirty, out of round, wheels cause wobble. Wobble It can be reduced by various methods, but why not eliminate the cause.
  7. Roger Hensley

    Roger Hensley Member

    HO weight equals 1 ounce + 1/2 ounce per inch of car. A 6 inch car would weigh 4 ounces.

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