Wheels, Axles & Crankpins


Wheels, axles, crankpins, motors or gears are not included in Finecast kits, because of the wide variety of types now available on the market. Also there are the many different standards that modellers use, i.e. "00", "EM", "P4" etc.

We now look briefly at the various ranges on offer and the type of system used in their construction and assembly. It should also be remembered that prototype wheel diameters varied, according to the amount of wear sustained and whether the wheel had been turned down, during overhaul. Sometimes wheels were retyred, when the old tyre became below limits. Therefore there is some leeway in the diameters of driving wheels, possibly up to approximately 2".

Wheels


We can currently offer Scalelink wheels for most of our kits, and are currently in communications with another manufacturer in order to have a range of wheels made for us. The store will be updated as these come available.


Axles


All FINECAST chassis kits are supplied with 1/8" brass driving axle bushes. All of the driving axles supplied by the companies above are 1/8". BOGIE, PONY and TENDER wheel AXLES should be 2.0mm diameter for FINECAST chassis, as supplied in the JACKSON range. It may be necessary to modify the axle holes, other wheels are being used. Please refer to the information given by the wheel manufacturer.

QUARTERING


To qualify the term quartering, for the beginner. It is essential that the crankpins of the wheels on the same axle, are at 90 degrees to each other. This is to say, when the chassis is viewed from above, the crankpin of the right hand wheel is in the fully forward position and the left hand crankpin, is at the top of its wheel. This means that the right hand wheels are leading the left hand wheels by 90 degrees. This is the normal setting for most British locomotives, however there are exceptions to the rule, where the left hand wheel leads. Failure to set this 90 degrees lead will result in the chassis not running smoothly, or not at all.

If a quartering jig is not available, assemble one axle, so that the quartering is as near 90 degrees as possible. Then assemble the second axle near to the first and then adjust this axle until the coupling rods can be fitted and the four wheels rotate freely, without binding. DO NOT readjust the first axle, only one requires to be adjusted. When satisfied fit the third axle and so on. If there is a general tightness, it may be necessary to open out the coupling rod holes very slightly, one at a time until the wheels run free. These holes should not be made oval or any other shape, only round. Providing the quartering is correct, a serious binding problem can probably be traced back to a chassis that has not been built square.