
Throw Bar to the Turnouts on the Model Railroad Club
MRA EditorsDescription
One of the first problems that exists in turnouts is the pivoting gap, a joint between the point and the rest of the rails. This requires spikes or rail joiners to make a line, though this frequently gets out of line and is often difficult to construct. Instead, the club has chosen to use what they call continuous points. Instead of having segments, they have a point that goes all the way to the throw bar, with part of the point curved to the interior.
Another point of failure is the connection between the point rail and the throw bar itself. Most people wind up using some kind of a tab soldered to the point rail and then pin or screw it to the throw bar. This connection is very difficult to make, and has a lot of stress and failures.
Instead the club has chosen to use a throw bar that is a single piece of plastic that fits into the stop rails themselves. To make the throw bars they start with a large sheet of lexan and run it through a table saw upside down so they can route out grooves on both sides. This forms tabs that slide underneath the stock rails, leaving a raised center section. This makes it able to push against the point rail.