Sunset GN O-8 mike, open cab assembly.
GN had the largest mike ever made and done in their own 'shops'.
Tender:
Tape was removed from all electrical contact points and cleaned with a 'bright boy'. The speaker and components along with a tender rear light were installed.
The usual for power and ground: tender facing left on back, insulation side towards the viewer. On the engine, insulation side on the far side.
One wire for the sound (far wire) and one for the tender light. Pin for the tender light made from RC airplane connecting pins: just using the metal pins, they can be made very small (plus cost effective!).
Engine:
Drive train:
Checked each driver for insulation/power side for proper install and one driver set has a bad insulation side. Tried using the tip of an Xacto blade to clear any foreign objects along the insulation but no luck. Heated up the 'tire' and used some needle nose pliers to pry the tire from the rim. Moved it about a 1/64" out and, using the NMRA gauge, I found the original setting was too narrow and the new location correct. The tire wasn't moving and it was still on very tight to the rim so I left it 'as is'. I've noticed on previous drivers where the tire has an inner lip and it can contact the rim, shorting out the wheel.
Springs installed for each journal and drivers installed. Good time to install the brake shoes before the side rods are added.
Side rods then installed. I tried using some hex head screws over the original slotted screws but they, eventually interfered with the push rods so I had to put the original screws back in, save the back set where nothing moved over them.
Push rods and offset crank installed last. The offset crank gets set just forward of center.
After each of the above 3 installs, the mechanism is placed on the track to insure all is moving freely, limiting time and effort on finding any binds.
