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Sektorivaihde, katkokiskovaihde tai liukuvaihde
Schleppweiche / Stub turnout


Tämä on SMV:n Kirjavan liikennepaikan protyyypi, joka rakennettiin 2008-2010 ja jolla tutkittiin ajatusta katko- tai liukukiskovaihteesta. Ajatus perustuu saksalaisten FREMO-piipolihojen scleppweiche-ratkaisuihin (esim. M. Maleis'n Schattenbach) sillä erotuksella että tässä raide liikkuu lineaarisesti eikä säteittäisesti. Säteittäisessä järjestelmässä kahdella raiteella olisi pitänyt olla yhteinen keskipiste, ja se vaikutti hankalalta.

This is a test prototype for Kirjava fiddle yard stub turnout. It is based on "schleppweiche" idea, so popular in german FREMO groups, e.g Fiddleyard Schattenbach by M. Maleis. The plan of having two parallel, yet separate turnouts for double track use needed linear movement as the two parallel systems could not easily have had a common central point from which the tracks could radiate. Hence the track end moves in linear way instead of radial way. The system is now in use at Siuntio mechanical workshop's (SMV) Kirjava fiddle yard, yet having only single track turnout


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Small proto, only for about three tracks...

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The moving end goes laterally (like traverser), not radially like normally...

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The middle part has length adjustment and being rigd provides straight section of track between reversing curves

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To avoid making fancy slides, I used Peco code 100 rail joiners, and Tillig Elite Code 83 flex and filed the rail profile into a splice joint. As the moving end moves laterally and not radially the length change of the flex is reduced. ..

Valokuva

The lateral movement is by 8mm brass bar and matching tube and screws soleded to the tube (Bauhaus stuff)...

Flex demo [YouTube] Movement -- manual and stepper from an old printer, operated with Arduino.