0gradientes modelo ferroviário

ferrovias modelo, como a coisa real, tendem a ser bastante plana.  Se você quiser ot têm layouts mais complexos com gradientes que você precisa planejar cuidadosamente com antecedência, e evitar a tentação de criar um irrealista (e undriveable!) inclinar.

Many mod­el­lers wish to build mod­els that look real­ist­ic, so let’s start with what sort of gradi­ents are found on the real rail­ways.  The Wors­brough incline on the former wood­head main­line from Manchester to Shef­field was a 1 em 37 inclinar, and reg­u­larly used 4 motores.  Parts of Mer­sey rail are claimed to be as steep as 1 in 27 as is the Middleton Junc­tion to Old­ham Wer­neth line.  More sus­tained gradi­ents include examples such as around Ports­mouth where the line from Goldalm­ing to Haslemere has a gradi­ents of around 1 em 80.  The Lickey incline near Birm­ing­ham is a 1 em 38 incline para 2 milhas.

Put anoth­er way, short inclines on the real rail­ways have been as severe as 1 em 27 (3.7%), but these required spe­cial bank­ing locos or mul­tiple locos.  The steep­est sus­tained inclines that are oper­ated without spe­cial locos don’t exceed 1 em 80 (1.25%)

Para atravessar trilhas com 00 bitola exige uma altura de 60 milímetros da parte superior da trilha, to bot­tom of base­board above.  With a baseboard+track thick­ness of 10mm this means to cross one track over anoth­er will require a rel­at­ive height dif­fer­ence of at least 70mm.  Achiev­ing this in the shortest dis­tance can be achieved by 1 track sink­ing 35mm and the oth­er rising by 35mm.

With a real­ist­ic incline of 1.25% este requer um comprimento de 2,8 m!

Unless you have a lot of space it will be hard to build a lay­out with a cross over that sticks to real­ist­ic real world inclines.  So the next ques­tion is — what is the steep­est incline that can be oper­ated suc­cess­fully with typ­ic­al 00 locos calibre, and is there any­thing that can be done to improve this.

Os usuários na hornby for­um sug­gest that around 1 em 75 seems to be the lim­it for a 6-coach train. Anoth­er recom­mend­a­tion está ao redor 1 em 60. Isto pode ser empurrado para 1 em 50 with short­er trains, mas com o comprimento completo (8−10 car­riage) trains pulled by steam locos any­thing steep­er than 1 em 50 é pouco provável que funcione. Using the same for­mula as above the length required it still 1.75m. Anoth­er good sum­mary is Mod­elRail­way­En­gin­eer.

podemos melhorar esta

One way mod­el­lers have improved loco grip in the past has been to increase loco weight. This has the obvi­ous down­side of increas­ing the weight that the motor has to pull up any incline, and there is often lim­ited space inside locos to fit weights. I recently wondered if it would be pos­sible to improve the grip of locos by pla­cing a mag­net­ic mater­i­al under the track and using super-strong mod­ern mag­nets (cheaply avail­able from ebay) em locos para melhorar a aderência. Well — it turns out it is — and there is already spe­cially designed kit called Powerbase being sold for exactly this pur­pose. DCC con­cepts guar­an­tee that Powerbase will double the pulling power of locos up 1 em 30 gradi­ents, but what will your locos pull up those gradi­ents to start with, e quanto vai PowerBase ajuda com um 1 em 50 inclinar?

um teste of powerbase found a 2−6−0 loco on a 1 em 35 gradi­ent improved from pulling 8 wag­ons to pulling 29 wag­ons and could have done more.

Anoth­er example of the improve­ments avail­able was recently in the Hornby magas­ine. Com um 1.5% inclinar (1 em 66) quase todos os loco tested duplicou o que poderia puxar, with smal­ler 0−6−0 and 4−4−0 locos able to pull 6 ou 7 car­riages, and lar­ger 2−6−0 and 4−6−0 locos able to pull 12+ car­riages.

Usando Powerbase parece que se inclina de 1 em 30 are pos­sible with good length trains, tak­ing the length required for such an incline to only 1m.

Tem alguns pensamentos de seu próprio? Mime-se abaixo comentando! If you would like to subscribe please use the subscribe link on the menu at the top right. You can also share this with your friends by using the social links below. Felicidades.