Improving the running qualities of locos especially steam.
would like to improve the running qualities of some of my steam loco's. In particular, by adding
extra pick ups,and some
weight. The locos are: Trax 12 & 20 classes.
Any Information or Help will be greatly appreciated.
Terry Flynn replied:
All the models you mention are small and therefore improving draw bar pull by adding mass will be limited. Try gluing a thin piece of lead in the cab roof and using a white metal crew. The easiest method to increase draw bar pull is to remove the spring from the leading bogie of the
12 and 17. If they tip forward remove weight from the smoke box.
Usually this increases tractive effort. If it does not work it's easy to put it back to original condition. The next options are more difficult to do but will improve the tractive effort more so again.
If your tender has inside bearings replace these with pin point outside bearings. Finally if you still want more draw bar pull make the tender so the only the rear axle or bogie of the tender takes weight. Modify the draw bar so the front of the tender has all of its forward weight supported by the locomotive. Do not use electrical pickups made of wire rubbing on tender wheels or axles as this decreases draw bar pull. Picking up through the bearings is preferable in this case.
The easiest method to improve pickup is to use oil on the track that makes the dust and dirt conductive I use a product called Inox.
http://www.inox-mx3.com/inox.htm After saying the above all the models you mention are small and the respective prototypes could only pull short trains, as short as 4 bogie wagons in some cases where steep
grades were involved.
See Terry’s web site at: