A First Generation Motor Drive
This is the model of Motor Drive that was offered with the first RE Super/Super D cameras, probably about 1964. A NiCad battery pack connected to the Motor Drive via a cord. The battery pack could also be used as a remote control since it was equipped with an expose button and a single/continuous switch. The battery pack had a clip for attaching it to the belt and also a miniature volt meter to display battery charge. A line powered charger was provided to recharge the NiCads. The battery pack was stacked on top of the charger making electrical contact via two pins.

This version of the Motor Drive is easy to identify since the mounting slide and the two contacts for the non-cord battery pack are missing.

Last of the Macros
The RE Macro Auto Topcor was always a handsome lens in it's chrome finish. However, the last version was presented in matte black, adding a touch of elegance to match it's stunning optical performance.

Shown here, it is extended on the RE Auto Ring and racked out for a magnification of unity. The RE Auto Ring couples aperture action between the camera body and the lens, allowing wide open viewing and exposure measurement.

Radio Control
A very expensive accessory for the RE Super/Super D was the Remote Control system. This consisted of a radio transmitter and receiver, working at the frequency of the Citizen Band (CB). The receiver provided connectors for up to four Motor Drive equipped cameras. Of course the Remote Control only initiated exposure, either single or continuous, and all connected cameras were controlled in parallel. Before operation, all cameras had to be set up with regards to framing, focus, aperture and shutter speed.

The above image shows two cameras connected to the receiver. The toggle switch located in the center of the connectors is for switching the receiver power on or off. Receiver power was provided by four AA batteries mounted internally. The meter, near the top, indicated battery voltage, not signal strength.

Motor Drive power could either be provided by a single non-cord power pack attached to any Motor Drive, or by attaching a 12 volt voltage source to two terminals located below the connectors.

250 Exposures Without Reloading
Shown below is a 250-frame Bulk Film Back attached to a RE Super. The back and one cassette have been removed. As with their Motor Drive, Topcon designed the camera to accept the Bulk Film Back without any modifications. This accessory was probably intended for professional photographers since few amateurs could afford to burn up film in this quantity. With the Motor Drive set for its maximum rate, three frames a second, all 33 feet of film would last about 83 seconds.
Contrary to what you might read elsewhere--the Bulk Film Back will not work without a Motor Drive. A gear on the Motor Drive drives the take-up spool.
The Motor Drive was popular with Navy users, but I do not know if they also used the Bulk Film Back.
If you want to use a Bulk Film Back you first need the special loader for the cassettes. Then you must find somewhere to process a continuous 33 foot strip of film.