1:22,5 G-scale, (45mm track), live steam „reconstruction“ of the
Kitson Meyer Type5 with additional rackzylinders 0+8+6+0 for the Transandine Railways, Chile/Argentinia
"Type 5 Kitson Meyer was a combined rack/adhesion design for use on the through route over the Andes between Chile and Argentina and as such both sections of the Transandine Railway will be considered in some detail. Locomotives of Type 5 were extremeley complicated and should really have been a disaster but, as it turned out, proved to be excellent machines."

Kitson Meyer order nr.:4488, build 1907, F.C.T.C (C.T.R.) nr.:7, photo 1907, Airedale Foundry

"The Kitson Meyer’s brought seven vehicles down the rack (140 tons) and in their original condition climbed the 1 in 12 1/2 rack section on adhesion units alone, but the additional rack cylinders on the adhesion bogies proved too much for the boilers which could not make enough steam. In 1911 the small rack engine (which consisted of a single set of pinions driven by the pair of cylinders at the front end of the adhesion bogie and mounted above the adhesion cylinders) was removed so returning these locomotives to the condition specified originally by the Consulting Engineers."
(Donald Binns:"KITSON MEYER ARTICULATED LOCOMOTIVES")

Kitson Meyer order nr.:4670, build 1909, F.C.T.A. (A.R.T.) nr.:42, photo 1910, "as build" condition

Herbert William Garratt deposited his patent on 24. January 1908.

“.... By placing his fuell and water tanks on the bogies, Garratt not only lessened the strains and forces on the pivot, but completely altered the existing concept of boiler design. While still retaining the basic locomotive type, his design of engine enabled the boiler to the developed to almost the maximum permitted by the loading gauge. The Fireboxes on Mallets had to be either narrow or shallow, to fit them in between, or over, the driving wheels, and this also applied to the Meyer in its original form, the bogies being connected, with the boiler, tanks, bunker and cab mounted on a single frame over them. While the Fairlie could have a deep firebox, the width was limited because the double-ended boiler had to be fired from the side. The water tanks and fuel bunkers also limited the diameter of the boilers on both Fairlie and Meyer. In 1894 Kitson of Leeds improved the original Meyer concept by seperating the bogies and pivoting them individually under the boiler frame. This gave the Meyer a mew lease of live, because the firebox could be dropped almost to rail level, but the width was still restricted by the water tanks carried at the sides.”
(from Hills/Patrick "Beyer Peacock locomotive buildert to the world")