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Resistance Formula Diesel/Electric loco dead in tow

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Sean Emmett

Posts: 120
Resistance Formula Diesel/Electric loco dead in tow - Posted: August 31, 2017 - 9:55 PM Quote and reply
I travelled on the Easterling on Bank Holiday Monday from Kings Cross to Great Yarmouth and return behind 60163 Tornado with 13 Mk1s and 66 128 dead in tow at the rear. By that I mean it was completely shut down.

I made that 601 tons tare and 630 - 635 tons gross.

Tornado achieved a constant 46 mph on the 1:200 between Wood Green Tunnel South and Potters Bar Tunnel North, before easing for the pick-up.

I would like to know what formula I should use for the rolling resistance of a diesel (or electric) loco dead in tow, and any variations between class?

Maybe something we could add to the RPS horsepower calculation?

The more vexed question is the resistance (or otherwise) of a class 47 in notch 1 when attached to the rear of a steam special...

Would very much welcome feedback.





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