0التدرجات نموذج السكك الحديدية

السكك الحديدية نموذج, مثل الشيء الحقيقي, تميل إلى أن تكون مسطحة نسبيا.  إذا كنت تريد التمديد لديها مخططات أكثر تعقيدا مع التدرجات تحتاج الى خطة بعناية مقدما, وتجنب إغراء لخلق غير واقعي (وundriveable!) قنع.

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 في 37 قنع, and reg­u­larly used 4 محركات.  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 في 80.  The Lickey incline near Birm­ing­ham is a 1 في 38 انحدر ل 2 اميال.

Put anoth­er way, short inclines on the real rail­ways have been as severe as 1 في 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 في 80 (1.25%)

للعبور المسارات مع 00 مقياس يتطلب ارتفاع 60MM من أعلى الطريق الصحيح, 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% هذا يتطلب طول 2.8M!

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 لوكوس قياس, and is there any­thing that can be done to improve this.

المستخدمين على hornby for­um sug­gest that around 1 في 75 seems to be the lim­it for a 6-coach train. Anoth­er recom­mend­a­tion حوالي 1 في 60. يمكن دفع هذا ل 1 في 50 with short­er trains, ولكن مع كامل طول (8−10 car­riage) trains pulled by steam locos any­thing steep­er than 1 في 50 من غير المرجح أن يعمل. Using the same for­mula as above the length required it still 1.75m. Anoth­er good sum­mary is Mod­elRail­way­En­gin­eer.

يمكننا تحسين هذه

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) في لوكوس لتحسين قبضة. 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 في 30 gradi­ents, but what will your locos pull up those gradi­ents to start with, وكم سوف معقل مساعدة مع 1 في 50 قنع?

اختبار واحد of powerbase found a 2−6−0 loco on a 1 في 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. على 1.5% قنع (1 في 66) تقريبا كل مقام اختبار تضاعف ما يمكن سحب, with smal­ler 0−6−0 and 4−4−0 locos able to pull 6 أو 7 car­riages, and lar­ger 2−6−0 and 4−6−0 locos able to pull 12+ car­riages.

باستخدام معقل يبدو أن يميل ل 1 في 30 are pos­sible with good length trains, tak­ing the length required for such an incline to only 1m.

وجدت هذا مفيدا? يرجى إعلامنا عن طريق إسقاط التعليق أدناه. إذا كنت ترغب في الاشتراك يرجى استخدام الرابط الاشتراك في القائمة في اعلى اليمين. يمكنك أيضا مشاركة هذا مع أصدقائك باستخدام الروابط الاجتماعية أدناه. في صحتك.

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