HO Brass Steam Locomotives and Electricity = Sparky!

One of the distinguishing problems with brass andcarefully bend the overflow pipes and other items that
electricity is brass is an electrical conductor with amay be coming in contact with any of the wheels
tendency to short out a lot and can create a blueaway from the wheels. Be very gentle with this
electrical show that is not wanted.process. It is easy to break the solder joint and now
This has been a common problem with Brass Steamyou have a worse situation. Only a slight movement
Locomotives. The Asian manufactures have tried verywill fix the problem.
hard to create a model that is as accurate as possibleThe next item is the draw bar and the post on the
in 1/87 scale. In doing so many times the tolerances aretender. Many times the draw bar has not been fixed
so tight between the pony trucks and the cylindersproperly to the frame. There are insulating washers
that you get continual shorts. This may also be truethat must be installed properly and the solder joint must
with the trailing trucks and the cab of the locomotive.not come in contact with the frame. The draw bar is
This being an intolerable situation for the hobbyist oneintentionally isolated from the frame since it is bringing
wonders what he or she is to do to take care of thethe power from the tender to complete a circuit on the
problem. There are several methods to alleviate themotor. Make sure that you have the + & - wires
nuisance. The most common way is to paint woman'ssoldered properly or your engine will go the wrong
clear nail hardener on the wheels of the pony trucks orway.
the trailing trucks. This is temporary since in time theThe last problem is the body of the locomotive. There
nail hardener will ware off. However, by placing a thinare times when the manufacturer does not align the
coat of clear epoxy on the cylinders or cab body willbody to the frame and the two parts may fit as far as
generally eliminate the problem.mounting is concerned but the body is slightly tilted to
The best method is to find the exact wheel set thatthe right or left. This may allow the body to touch the
goes on the locomotive for both the pony trucks anddrivers which will cause a short. To remedy the
trailing trucks. The key is to find a set of wheels thatproblem remove the body from the frame and
are insulated in the middle of the axle. This may beexamine the body and frame interface for areas that
difficult for the type of locomotive you have.may cause Sparky to appear. You might have to
Now that the standard among Railroaders is all freightgently pull the body inwards or add an insulation pad of
cars and passenger cars must have metal wheelsfibrous material that will squeeze down on the frame
that are insulated to stop Sparky and reduce dirtyyet keep the body from interfering with the drivers. At
tracks. You may be able to find a set of wheelsall times be careful not to distort the brass body.
among the different wheel sets for the fright cars thatThe best way to locate sparky is to turn off the lights
match in size and characteristics which will satisfy yourand run the engine in the dark and watch for blue
need.sparks between the various parts that may come in
The other shorting problem is piping that hang downcontact with each other.
near any of the wheels. To solve this problem,