Bachmann Ivatt Mogul 2-6-0 Assembly Instructions Manual

Bachmann Ivatt Mogul 2-6-0 - Assembly instructions
Introduction and general notes
We have had been many requests to produce an add-on kit for the Bachmann Ivatt Mogul. We felt that
there we could make little or no improvement above the footplate because that part of the model is
excellent, but we could make a worthwhile improvement in the detail and running of the chassis.
This kit has overlays for use in 00, EM and 18.83 gauges; all parts are included to enable construction,
if required, for a sprung locomotive chassis (bearings for the chassis are not included) and sprung
tender chassis, although some modifications may be necessary for closer than scale frames and tight
curves, and to allow for over scale wheel flanges. The basic design/overlays follow the prototype as
closely as possible and therefore clearances in some cases are tight.
The design uses overlays with plasticard packing to achieve the correct chassis spacing (note - white
has been used for better illustration here).
The Bachmann chassis is 11mm wide, not including the boss around the axle slot.
The model depicted in the photographs is built to 18.83 standards and to pack out the chassis overlays
0.60" – 1.5mm white plasticard was used. The overall chassis width with overlays is 15.25mm plus
approximately 0.125mm for the etched rivets on the second overlay.
Brassmasters 1/8" bearings were used with the thicker boss to the outside, washers were used as
required there is little or no end float on the front driving axle. The remaining axles had approximately
0.5mm end float.
The model is built with 1/8" axles and a High Level HighFlier gearbox and 13.5mm x 26.5 mashima flat
can motor (available from Chris Gibbon-High Level Kits). Whilst it is perfectly alright to build the chassis
with the supplied motor and gearbox we felt we wanted to take the model to a stage further.
During construction, it was found that using the supplied etched springs the pick-ups on the Bachmann
keeper plate would no longer fit and new pick-ups had to be made. (See photo-pull rods fitted)
There are many options available to the modeller with this kit from a sprung chassis to fixed axles and
we recommend a careful study of your requirements before starting construction.
Alan Gibson produces a complete drop in wheel set; these come with a direct replacement 3mm axle
used by Bachmann. However also available from Alan Gibson is the correct driving wheel size (1/8"
axle) along with pony and tender wheels. Another option is Exactoscale 1/8" or 3mm bearings and
springs; these are not described here but with some minor modifications to the solid Bachmann chassis
will fit the chassis overlays.
Etchings
We have used nickel-silver throughout, since it is much easier than brass to solder and to paint. All
bends are on the half etch line except where otherwise stated.
Wherever possible we have included spares of some components to allow for those parts which
generally hide in the carpet.
Please remove all etched cusp from the parts to obtain a good fit and in some cases it is critical the
cusp is removed.
NOTE most rivets on this model are depicted by the use of half etch overlays, but some require
embossing from the rear. Although a rivet embossing tool may be used to form the push-through rivets
the variable spacing sometimes makes this a little difficult. We recommend resting the etch sheet on a
piece of lead flashing (available from builders merchants) or hardboard and embossing with a blunt
compass or needle.