RB Super D

[campy51]

Anyone know what the two extra connectors are for?

 

[Donald Qualls]

If you're referring to the vacant bracket and two-pin round screw-in connector next to it, those are for flash sync. Good luck finding focal plane bulbs these days (even if you manage to locate a usable "light saber" Graflex-mount flash), but you could still use a modern flash unit with a curtain opening that exposed the entire frame for an instant, if the sync fires at first curtain full open (it probably fires at first curtain start, FP type bulbs would burn long enough for a Graflex or Speed curtain to make its full travel even on low spring tension settings).

 

[Don_ih]

That looks not original but may be a different flash sync connector - syncing at a different point of curtain travel?

 

[campy51]

I am referring to the round and oval ones. I have never seen a graflex flash that has that type connector. I have a Graflite flash but I don't see how that would work. They look like connectors for the big flash guns that used the power packs.

 

[Don_ih]

Those are standard two-pin flash connectors (actually called bi-pole sync connectors). The circle around one and the oval around the other just protect them.

You can get two-pin to pc connectors. You can get two-pin to the connector that looks like a standard plug for a wall outlet.

 

[RalphLambrecht]

View attachment 396661

That looks not original but may be a different flash sync connector - syncing at a different point of curtain travel?

Yeah, if you can find a connector with a cable for this,you shouldbe able to solder this to aregular PC synch and use it as X-synch, which will most likely synch with this camera.

 

[Donald Qualls]

Hmm. Looking again, the location of the round one suggests a mirror sync, the oval one might be first curtain open (what you'd want for an X type flash).

 

[Arthurwg]

but you could still use a modern flash unit with a curtain opening that exposed the entire frame for an instant, if the sync fires at first curtain full open (it probably fires at first curtain start,

I think this was called the "drop-curtain setting." I used it successfully on mine with a modern flash back in the day. Wish I still had that camera.