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> - engines benefit from more weight, up to a point... additional weight
> (especially over the drivers) gives additional traction/adhesion. The 4561
> is a canonical (counter) example of this, it is so light it can't hardly
> move itself much less very many cars. Rubber helps but is not a panacea,
> just an aid.
Quite right. This is why the model scales have brass flywheels on top of
the motors. As for the rubber, we need actual traction tires (with treads)
on the wheels, not just wrapped rubber bands.
> What the best weights are is not clear to me. This info has been calculated
> for other gauges like HO and N.
You can find the NMRA RPs for weight here:
http://www.nmra.org/standards/rp-20_1.html
They've also introduced scale-wide standards for modules and DCC.
Hope that helps.
-Stefan-
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Message has 1 Reply:
 | | Re: My Santa Fe Train Kit Theories
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| (...) Figure for steel wheels/steel rail is that you can get 1/4th the weight on drivers as TE. More for a modern DE loco with anti-slip and AC motors (more like 1/3rd). As regards traction tyres, no, we don't need them. What is there should work (...) (22 years ago, 10-Oct-02, to lugnet.trains)
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Message is in Reply To:
| | Re: My Santa Fe Train Kit Theories
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| (...) I am thinking that there is a FAQ entry in here somewhere on weight. I am pressed for time but - engines benefit from more weight, up to a point... additional weight (especially over the drivers) gives additional traction/adhesion. The 4561 is (...) (22 years ago, 9-Oct-02, to lugnet.trains, lugnet.lego.direct)
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