Weight of Cars

[starman]

Thanks for your speedy replies.  This is exactly the information I was looking for.

[wjstix]

The National Model Railroad Association recommendation for all HO cars is 1 ounce of weight, plus 1/2 ounce for each inch of the car's length. So an HO car that's 6" long should weigh 4 ounces - 1 oz base weight plus another 3 ounces (1/2 oz x 6"). 

https://www.nmra.org/sites/default/files/standards/sandrp/pdf/rp-20.1.pdf

 

[starman]

I have a HO layout with many different types of cars.  Is there a recommended weight for cars and does it differ for different types of cars?  Thanks for your help.