Deluxe Innovations container weights

philhendry
philhendry's picture
Posts: 50
Joined: 2007-03-15
No votes yet

Hello folks,

 How much do the DI container weights weigh?  I'm a skinflint at heart, and having a load of 1/4" diameter brass rod lying around, it seems mad to buy weights when I could easily make them myself!

 Thinking 'aloud', I suppose I could use the NMRA formula and weight the containers so that when added to the cars, one ends up with them weighing the NMRA recommended weight.

 Anyone got any thoughts?

 Thanks,

Phil 




pbender
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Posts: 998
Joined: 2003-12-21
nScale.net Forum Moderator
I think you have the right

I think you have the right Idea Phil.  You can certainly make weights yourself if you have the materials.

I haven't weighed any of the DI weights that I have (most of which came with Twinstacks)  but I know they add enough weight to make the cars perform well.  I believe the DI weights are stainless steel, which probably has more mass per unit length than the brass rod you have.  The DI weights are shorter than the bottom of a 20 foot container, so you could make your brass weights slightly longer.

One other note, you only want to weight the lower container in a car.  adding weight to the upper container makes the car top heavy and prone to tipping.

 Paul




philhendry
philhendry's picture
Posts: 50
Joined: 2007-03-15
Brass tyically has

Brass tyically has densities in the region 8.4 - 8.75 grammes per cubic cm, stainless steel is about 7.9 - 8.0.  {Handbook of Chemistry and Physics, 63rd Edition, Chemical Rubber Company, 1984}, so brass is actually slightly heavier than stainless steel for a given volume (so the weights would need to be slightly shorter to weigh the same).  I'm a condensed-matter physicist by profession...

But I keep taking the tablets and I am getting better.  Laughing Laughing Laughing

Cheers, 

Phil 




Komata
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Posts: 1260
Joined: 2005-05-12
Deluxe Innovations container weights

Phil

Of course, you could always go the completely 'El-Cheapo'-way and get discarded Automotive Tyre-balancing Weights from your local tyre retailer/repairer and cut them to suit - especially the flat ones.

The tyre people usually throw them away and will quite happily 'donate' them to your good cause.

The weights come in various 'weights' and so you can tailor them to suit your needs - a bit of attention from a pair of side cutters will be all that is required to make them 'useul' - the metal is quite soft.

And, best of all, they are Freeeeeeeee!!!!!

Hope this helps.

Komata

"TVR - serving the Northern Taranaki . . . "


--

Komata

"TVR - serving the Northern Taranaki . . . " ___________________________________________




philhendry
philhendry's picture
Posts: 50
Joined: 2007-03-15
Weighted

Hello folks,

 I looked up the NMRA car weighting formula, converted it to grammes (rounding up/down a bit to get sensible numbers), and weighed and measured the Husky Stacks, with their loads on board.  I needed to add about ten grammes weight.  1/4" brass bar weighs about 10 grammes per 38mm, so I chopped up some 38mm lengths (and 19mm lengths for 20' containers), faced off the ends in the lathe to make 'em neat and tidy, and stuck them inside the bottom containers.  The cars now track much better.

Cheers,

Phil 




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