Graflex.org Forum Index Graflex.org
Get help with your Graflex questions here
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Graflite Jr
Goto page 1, 2  Next
 
Post new topic   Reply to topic    Graflex.org Forum Index -> Flash Help
View previous topic :: View next topic  
Author Message
pv17vv



Joined: 22 Dec 2001
Posts: 255
Location: The Ardennes, Belgium

PostPosted: Tue Sep 10, 2002 4:08 pm    Post subject: Reply with quote

Someone please tell me the difference between a Graflite Jr and a two-cell #2772 battery holder, if any. Thanks. Georges in Belgium
Back to top
View user's profile Send private message
Les



Joined: 09 May 2001
Posts: 2682
Location: Detroit, MI

PostPosted: Wed Sep 11, 2002 12:58 am    Post subject: Reply with quote

I get the idea Graflex was never making as much money as people thought they should. They would come out with a great camera, and then strip it down to lower the cost to get people to buy.

the Graflex Jr. was one such entry. It is stripped of the the rotary switch that allows all of the various ways a 2772 could be used. It also doesn't have a red button, so you have to use it with a sync'd shutter.

Not long after introduction, they came out with the battery-capacitor cartridge. I think the Jr was designed around the BC circuit. The BC circuit gave a short, high voltage burst to the bulb and practically eliminated any mis fires due to bad contacts. But with the BC you can't you a solenoid to trip the shutter.
and incase anybody was wondering a 2773 is the three cell battery case.
Back to top
View user's profile Send private message
alecj



Joined: 09 May 2001
Posts: 853
Location: Alabama

PostPosted: Wed Sep 11, 2002 2:30 am    Post subject: Reply with quote

To follow up what Les said, the Jr. has no outlets for the solenoid. While the regular battery case had 5 outlets, the Jr. had only 3 - shutter, extension, and a hot outlet, I believe.

Yes, the Jr. could take the BC cartridges, but it will operate just fine with 2 D cells. It's really just a stripped down model.
Back to top
View user's profile Send private message
worldphoto



Joined: 05 Feb 2003
Posts: 199
Location: Southern California

PostPosted: Sun Mar 02, 2003 5:03 pm    Post subject: Reply with quote

The Graflite Jr. is for series use,the Graflite 2-cell is for parallel use similar to the Graflex 2773. No B-C cartridge, no need or use for Graflite Jr..
Harry

Solenoids are wired in parallel, so would conflict (cause problems!!) with series circuits in unit.

Quote from Guide book:

"Special Notes on Graflite Jr..
1. Not used with Solenoid
2. Can only be fired with a shutter connecting cord"

[ This Message was edited by: worldphoto on 2003-03-02 09:36 ]

[ This Message was edited by: worldphoto on 2003-03-02 09:47 ]
Back to top
View user's profile Send private message
alecj



Joined: 09 May 2001
Posts: 853
Location: Alabama

PostPosted: Sun Mar 02, 2003 6:18 pm    Post subject: Reply with quote

Quote:

On 2003-03-02 09:03, worldphoto wrote:
The Graflite Jr. is for series use,the Graflite 2-cell is for parallel use similar to the Graflex 2773. No B-C cartridge, no need or use for Graflite Jr..
Harry

Solenoids are wired in parallel, so would conflict (cause problems!!) with series circuits in unit.


Harry: to the extent your message seems to indicate the Graflite Jr. is unuseable w/o a BC cartridge, I must respectfully, and knowledgably, disagree. The Graflite Jr. operates perfectly well with 2 D cell batteries, using a shutter cord, and can act as an extention flash if connected with another flash, including the 2772/3. It cannot be triggered from a solenoid, nor does it have the rotary switch of the 2772/3.
Back to top
View user's profile Send private message
worldphoto



Joined: 05 Feb 2003
Posts: 199
Location: Southern California

PostPosted: Sun Mar 02, 2003 7:56 pm    Post subject: Reply with quote

Hi Alex, I am glad to get your response.
Okay, Georges in Belgium started this topic. Do you think having a BC extension (Makes connects in series) is the best thing? Isn't there a real possibility for burnt fingers from a hot flashbulb if that outlet is used by mistake?

Without a BC cartridge there are only two outlets available for use; one N extension and one shutter. When the 2772/3 have five outlets available for use. You've already mentioned the lack of the red button and the N, 1, and 2 controls available on the 2772/3.
Sorry I stepped on your toes, I just learned the above info yesterday while I was researching the BC cartridge.
Harry
Back to top
View user's profile Send private message
45PSS



Joined: 28 Sep 2001
Posts: 3202
Location: Mid Peninsula, Ca.

PostPosted: Sun Mar 02, 2003 10:15 pm    Post subject: Reply with quote

A downloadable PDF version of the Graflite User Manual is still available at this member site: http://www.southbristolviews.com/pics/Graphic/graphicmanuals.html




_________________
The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU.
Back to top
View user's profile Send private message Visit poster's website
45PSS



Joined: 28 Sep 2001
Posts: 3202
Location: Mid Peninsula, Ca.

PostPosted: Sun Mar 02, 2003 10:38 pm    Post subject: Reply with quote

P/N 30950G1 Case complete-Battery 3 cell, Cat. No. 2773 (includes mounting brackets).
P/N 30950G2 Case complete-Battery 2 cell, Cat. No. 2772 (includes mounting brackets).
P/N 30950G7 Case complete-battery 3 cell, Cat. No. 2783 (less mounting brackets).
P/N 30950G6 case complete-Battery 2 cell, Cat. No. 2782 (less mounting brackets).
P/N 33866G1 Extension Unit Complete-Graflite Flash, Cat. No. 2778 (replaces p/n 30048G1)
P/N 33848G1 Case complete-Battery, Graflite Jr., Cat. No. 2770.
P/N 33880G1 Reflector Complete-Graflite 5 inch, Cat. No. 2745 (replaces p/n 30988G1)
P/N 310008G1 Reflector Complete-7 inch, Cat. No. 2747.
P/N 30048G1 Lighting Unit Complete-Side (replaced by p/n 33866G1).
P/N 30988G1 Reflector complete-5 inch, Cat. No. 2749 (replaced by p/n 33880G1).

AS Of MARCH 1965.

_________________
The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU.
Back to top
View user's profile Send private message Visit poster's website
alecj



Joined: 09 May 2001
Posts: 853
Location: Alabama

PostPosted: Sun Mar 02, 2003 10:56 pm    Post subject: Reply with quote

OK, Harry, I see what you're saying. I'm looking at the brochure for the Graflite Jr. and it says: "Use up to 10 Graflite extension units with B-C cartridge in series circuit". So, perhaps that unit isn't the best to use as the primary unit on the camera where an extension flash is also to be used.

But, I still maintain it is a perfectly fine unit with D cells. As the brochure says: "Gives maximum performance with either D size battery or B-C power".

I wouldn't avoid it just because of the wiring of the ext. plug, especially if my camera didn't have a solenoid.

The cat. no. of the Graflite Jr. battery case only was 2770.

And, you're NOT stepping on my toes. I think we all encourage vigorous discussions on here, while maintaining respect for each other's opinion. The whole idea is to arrive at the facts.



[ This Message was edited by: alecj on 2003-03-02 15:36 ]
Back to top
View user's profile Send private message
worldphoto



Joined: 05 Feb 2003
Posts: 199
Location: Southern California

PostPosted: Mon Mar 03, 2003 3:27 am    Post subject: Reply with quote

Thanks to everyones input, I sure have enjoyed all of it and I have learned alot. I obtained my information from "Graflite Flash Equipment Guidebook" by Graflex.
One final thought..... There is a possibility that Georges in Belgium may not even own a lens and shutter with bi-post cennectors. I know I didn't until I recently purchased a lensboard for my 127mm lens. My No.3 Kodak Supermatic shutter for the 152mm lens had the Bi-Posts removed and an external PC added when I bought it.
Harry

[ This Message was edited by: worldphoto on 2003-03-04 08:33 ]
Back to top
View user's profile Send private message
worldphoto



Joined: 05 Feb 2003
Posts: 199
Location: Southern California

PostPosted: Wed Mar 19, 2003 12:19 am    Post subject: Reply with quote

There appears to be little interest in Graflex B-C cartridges that the Graflite Jr was built for so some final final comments.
I bought a second B-C cartridge on the Bay and it is working fine ($12.00 US). Also, I bought a Graflite Jr for series multiple flashes with one of the cartridges. Even my Heiland Tilt-a-Mite, with a $2.12 battery from Radio Shack is working great with my P25 and 5B flashbulbs. Why?
Because it gives me more power, it frees me from the use of D batteries, and besides, I believe, the firing of flashbulbs is more uniform with the B-C cartridges and, Yes, I can even use solenoids with a single flashbulb. I'm one happy camper!
Harry
Back to top
View user's profile Send private message
Stephen Furley



Joined: 11 May 2001
Posts: 79
Location: London, England

PostPosted: Tue Mar 25, 2003 6:38 pm    Post subject: Reply with quote

I have a Jn. in front of me at the moment, I was using it with a Nikormat FTn at work this afternoon. It has three connections, shutter, Extension N and Extension BC. I am using 'D' cells in it. If I connect an extension to the 'N' outlet, it works fine, if I connect it to the 'BC' outlet it (the extension) doesn't fire.

I'm not clear about what has been written in this thread; are you sayng that when using BC power to fire several bulbs they (the bulbs) should be wired in series, and that this is what the 'BC' outlet does?

I have never been clear about firing a large number of bulbs from a syncronised shutter, a bulb takes quite a large current to fire, and connecting many bulbs in parallel will increase the total current. I wouldn't have thought that the flash contacts in the shutter would be capable of firing many bulbs in this way without damage.

I am sure I read something about wiring multiple bulbs in series in a book about O. Winston Link. If you were to do this then the total current would be the same as for a single bulb, the same current is passing through each bulb, but a higher voltage would be needed to produce that much current, sounds like just the job for a BC. what happens when you fire many bulbs in this way? I would have thought that some would fire slightly before others, thereby breaking the circuit, and preventing the others from firing. Will all bulbs fire reliably when wired in series.

I do have a BC, the reason I haven't tried it is that the 22.5V batteries now seem to be totally unobtainable, even places that have other obscure batteries have not been able to find me one. My father had a German plastic flash in the '60s, which used a BC circuit, but the battery in that is long dead. I have a small flash for AG1 or PF1 bulbs, which uses a 15V battery which is almost square in section. I have managed to get his to work by rolling a paper tube around ten 1.5V button cells and a small metal spacer, but I haven't found any way of replacing the 22.5V rectangular type. Any suggestions?

p.s. I am in the u.k., and sending batteries through the post seems be a major problem with postal and customs regulations, only slightly less so than transporting nitrate film, which is now getting very difficult; the last time I needed to move a few cans of the stuff I ended up carrying it about fifteem miles on foot, so I need a source of batteries here, unless anyone knows a way of importing them.

Thanks for any advice.
Back to top
View user's profile Send private message Send e-mail
Henry



Joined: 09 May 2001
Posts: 1439
Location: Allentown, Pennsylvania

PostPosted: Tue Mar 25, 2003 7:37 pm    Post subject: Reply with quote

I don't know whether you have Radio Shack stores across the pond, but if you do---their 2002 catalog (p. 393) lists an Eveready #412 22.5 volt carbon-zinc battery "for electronic applications", which replaces the #215 so it must be the same size and shape as the Mallory M-215 22.5v battery in my little off-brand ("Ultima") Japanese-made flash holder. From the illustration in the R-S catalog it seems to be the right configuration, but I can't tell about the size. Anyhow, it's R-S catalog no. 960-0437, cost $6.99. But it's also "special order" so that might be a problem for you, if indeed it's still available.

Incidentally, the clerk at my nearby R-S store told me that the company is no longer going to issue a printed catalog! But they WOULD give you a "special deal" on a computer so you could access their catalog on-line. Now THAT'S a slick maneuver if ever I heard one!

**** OK, just went to http://www.radioshack.com/ and entered 960-0437 in the little search window, and viola! (not "voila!"--we're not speaking frog here just now) the item is indeed listed and available. HTH.



[ This Message was edited by: Henry on 2003-03-25 11:50 ]
Back to top
View user's profile Send private message
sobahguy



Joined: 09 Oct 2001
Posts: 171
Location: Massachusetts

PostPosted: Tue Mar 25, 2003 8:12 pm    Post subject: Reply with quote

INDEED!!!
Looks to be the same battery used by the Super Graphics, a battery which my local Radio Shack Guru said they couldn't get!!! Well, it appears RS is another (and much more local & accessible) source for this "hard-to-find" battery.
Thanks.

[ This Message was edited by: sobahguy on 2003-03-25 12:25 ]
Back to top
View user's profile Send private message
45PSS



Joined: 28 Sep 2001
Posts: 3202
Location: Mid Peninsula, Ca.

PostPosted: Wed Mar 26, 2003 4:51 am    Post subject: Reply with quote

According to my Graflite manual when testing the JR. replace 2 "D" cells with the "BC" cartridge to power the JR.
Equipement:
Volt meter with leads.
Test lamp, standard base socket.
Standard household male plug with contacts shorted.
2 good "D" size batteries.
One "BC" cartridge, verify it is good.
Procedure:
Insert test lamp in top receptile. Insert batteries in case.
With voltmeter, check the following:
Shorted plug at SHUTTER=shutter shows short;Extension N=Hot; Lamp=Hot; Extension BC=dead.
Shorted plug at Extension N: Shutter=Hot; Extension N=short; Lamp=dead; Extension BC=dead.

REPLACE batteries with BC cartridge. With voltmeter, check the following:
Shorted plug at Shutter; Shutter=short; Extension N=hot; Lamp=hot; Extension BC=dead.

Shorted plug at Extension N: Shutter=hot; Extension N=short; Lamp=dead; Extension BC=dead.

_________________
The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU.
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Graflex.org Forum Index -> Flash Help All times are GMT
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group