
Posted: Thu Jun 06, 2019 5:48 pm
https://www.amazon.com/Exell-Battery-412A-Alkaline-BLR122/dp/B009Z1ERAE
Batteries in series : voltage adds, current is limited to the lowest current rating of the batteries.
2 22.5V batteries in series provide 45V. The batteries charge the capacitors which discharge and provide the current that is necessary to operate the solenoid that trips the shutter. The batteries last for months under heavy camera usage or years under light camera usage.
Connecting batteries in series is Positive of battery 1 to negative of battery 2, positive of battery 2 to negative of battery 3 repeating until you get the voltage desired with the positive of the last battery in the stack and the negative of the 1st battery being the circuit connect points. In the video 4 of the batteries fill the depth of the battery compartment and 4 stacks of 4 are needed to produce the voltage required.
The battery door of the SSG is dependent on batteries being installed and will not stay in place if the batteries are not present. Battery doors are getting harder to find and are frequently missing.
The switch that operates the shutter release is on the top left of the camera. The brass contacts corrode (tarnish) and have to be cleaned. The rangefinder assembly has to be removed to service the switch. The camera electronics are mounted in the rangefinder assembly.
The brass strips in the bellows break causing a failure in the shutter release and flash triggering circuits.
https://graflex.org/helpboard/viewtopic.php?t=5113
The change from flat to bent corner shutter blades occurred early on in production and there is no serial number record of the change.
There was a design change in the bellows electronics connection and it is documented in the service manual.
You will be very hard pressed to tell the difference between a Wollensak 135mm Optar used on Super/Speed/Crown Graphic and the Rodenstock 135mm used on Super Speed Graphic. To test mount the same camera on a tripod, photograph the same test target with extremely fine detail on very slow film with both lens, enlarge the processed negatives 100X or larger and inspect carefully.