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O'Connor 50: What bowl size?


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#1 Samuel Berger

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Posted 13 October 2017 - 10:19 PM

I just got an O'Connor 50 fluid head and now it needs legs.

 

Thing is, I don't know the bowl size and Googling isn't helping much. I was hoping to find an inexpensive set of legs for this. Any suggestions?

 

Thanks


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#2 David Hessel

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Posted 13 October 2017 - 10:28 PM

I have one and it is an odd size like 120 or something. I put on an adapter to convert it to 75/100. I will try and find the one I used.

Edited by David Hessel, 13 October 2017 - 10:42 PM.

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#3 Samuel Berger

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Posted 13 October 2017 - 10:34 PM

I have on and it is an odd size like 120 or something. I put on an adapter to convert it to 75/100. I will try and find the one I used.

 

Thanks David! I hope I can locate an adapter like that.


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#4 David Hessel

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Posted 13 October 2017 - 10:36 PM

https://www.bhphotov...&m=Y&sku=366661

I think this is it. I just removed the original tightening handle and replaced it with this. I don't recall it being difficult but it has been a while since I did it.

Edited by David Hessel, 13 October 2017 - 10:41 PM.

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#5 David Hessel

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Posted 13 October 2017 - 10:38 PM

It looks just like the one I have on it now.

Edited by David Hessel, 13 October 2017 - 10:41 PM.

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#6 Samuel Berger

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Posted 13 October 2017 - 10:44 PM

Wow that Manfrotto 500BALLSH looks even simpler than I expected! Thank you! Hopefully it will work out. The head is on its way to me, should be here in a week or so.

Going to see if I can find a compatible Davis and Sanford set of legs, they're good and cheap.


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#7 David Hessel

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Posted 14 October 2017 - 12:09 AM

Your welcome. I just found my receipt and that is the adapter I got. I have been very happy with my O'connor 50, it might not be as good as what is available now but it is still a great fluid head, plenty good for my needs.


Edited by David Hessel, 14 October 2017 - 12:10 AM.

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#8 David Hessel

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Posted 14 October 2017 - 12:29 AM

As I recall and looking at it now I believe there was one minor modification I needed to make. If you look at the picture of the adapter there is a 3/8 bolt and recessed nut on the top. That bolt was too short, if I remember correctly, to get a good connection with the O'connor. I lengthened it by removing it and adjusting the nut. Looking at mine now the nut is no longer recessed and sits above the adapter a little bit.


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#9 Samuel Berger

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Posted 14 October 2017 - 12:30 AM

David, would it be possible for you to post a picture? Thanks


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#10 David Hessel

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Posted 14 October 2017 - 12:54 AM

Here it is on a tripod.

t52f3uR.jpg

 

Here it is on the O'connor.

jaE6DAu.jpg

 

Here is the bottom notice the bolt and the nut, this bolt runs all the way through and screws into the bottom of the O'connor.

Z7pO3oX.jpg

 

Here is the connection to the O'connor you can see the same size nut that is on the bottom.

FSfUhMm.jpg

 

 

I was going to take it off but I have it on there really tight and couldn't get it off by hand. I think what I did was remove the bottom nut. Unscrew the bowl adapter from the bolt. I then screwed the bold at the end with the top nut  into the O'connor. Screwed the bowl back on tight and put the bottom nut back on last tightening it all down. As I said it is on there so good now I cant remove it without tools. Also I may have added that top nut on top of the one that was there, I don't recall now but it appears that I did.


Edited by David Hessel, 14 October 2017 - 01:00 AM.

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#11 Samuel Berger

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Posted 14 October 2017 - 10:57 AM

David, thanks a lot for the pictures. I was a bit worried I wouldn't be able to use the head with a non-O'Connor set of legs but now I know I can.

Still looking for the least expensive sticks out there, but 100mm isn't going to come cheap.

https://www.bhphotovideo.com/c/product/1335987-REG/benro_a674tm_dual_stage_100mm.html The Benro over here is $399.

 

I wonder if I could use a 75mm adapter instead of the 100mm so I could buy cheaper legs?


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#12 Samuel Berger

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Posted 14 October 2017 - 01:19 PM

I found that this particular set of legs holds up to a 120Lbs rig. https://www.amazon.c...d/dp/B002ZDQN2E

 

However for this one I imagine I'd have to bypass the ball altogether and just use the Mitchell base on the O'Connor 50.

 

But, it's only like $120 for the tripod legs.


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#13 David Hessel

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Posted 14 October 2017 - 01:47 PM

I don't see any reason why you couldn't use a 75mm but never tried.
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#14 Jon O'Brien

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Posted 14 October 2017 - 04:29 PM

I've noticed that a lot of Miller fluid head tripods have 75mm bowls. Some cinematographers say to go for only 100mm and 150mm yet Miller (made in Australia) have a very good reputation. What is the disadvantage of a 75mm?

 

I have a theodolite tripod that's quite solid and if I could just find a video fluid head for it that would fit onto its 40mm 'bowl' that would be great. I need something that's going to work for a Bolex H16.


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#15 Samuel Berger

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Posted 14 October 2017 - 05:58 PM

Jon,

 

I don't know the specifics but for years I used a Bogen Manfrotto 3036 Tripod with 3063 Fluid Head with my Bolexes. It didn't have a leveling bowl that I recall, but I've always liked it.

 

Hope that helps someone some day.


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#16 Brian Drysdale

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Posted 14 October 2017 - 06:14 PM

I've noticed that a lot of Miller fluid head tripods have 75mm bowls. Some cinematographers say to go for only 100mm and 150mm yet Miller (made in Australia) have a very good reputation. What is the disadvantage of a 75mm?

 

I have a theodolite tripod that's quite solid and if I could just find a video fluid head for it that would fit onto its 40mm 'bowl' that would be great. I need something that's going to work for a Bolex H16.

 

It depends on the weight of the camera, 75mm is suitable for lighter cameras because of the lighter tripods that use it. . Also, as you move the camera with higher levels of fluid drive in the head it does tends to work loose more often with the smaller bowl.

 

No bowl works, however, it takes longer to level the camera.


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#17 Samuel Berger

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Posted 14 October 2017 - 06:40 PM

Bryan,

 

The Eclair NPR loaded and with zoom mounted weighs about 21 pounds. Any thoughts regarding using that on a 75mm bowl?


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#18 Gregg MacPherson

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Posted 14 October 2017 - 09:56 PM

The concerns about the head size, geometry,  load capacity....

 

The load capacity is not that meaningful,  one could ask those familiar with that head...Any head has a certain strength (load capacity)  and stiffness.....For preceise work, the stiffness is the key...

 

Ask what others have found adequate...

 

The claims re load carrying capacity are not meaningful. 


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#19 Samuel Berger

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Posted 16 October 2017 - 05:10 PM

Hi Gregg ,

 

I ended up getting a Peter Lisand JR-A-74. The seller used to have an O'Connor head on it.

http://whitehouseaud...em_tripod4.html

 

Thanks for the help, everyone!


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#20 Jon O'Brien

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Posted 16 October 2017 - 09:45 PM

Thanks Samuel for your helpful advice on the Manfrotto gear for the Bolex. My quest is still continuing; at times I tire of the search and must rest from it  :P But soon enlightenment shall come.


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