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Arm Post Snapped

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#1 Philip J. Martinez SOC

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Posted 24 February 2014 - 03:31 PM

So I learned a lesson on set yesterday. There is topside and a bottom side of an arm post. I apparently had mine upside down and it snapped. Luckily it was a light setup, Sony F800, and I was able to hold onto the sled. Only the arm post and a ¼ 20” cold shoe from my bolt transmitter were damaged. I have a 10” arm post too so I was back up and shooting within 5 min.


The top of the 6” post has a hole right at the top. The bottom has a hole 15/16” of an inch from the bottom. Glad I know now.

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#2 Michael Wilson

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Posted 24 February 2014 - 11:37 PM

Yikes!  Did your arm shoot up?  That's one of the things I fear is something like this happening and the arm shoots up and nails me in the chin.  Lights out... 


I love your commitment to accuracy.  15/16 of an inch  


Thanks for the heads up.

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#3 Lawrence Karman

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Posted 25 February 2014 - 10:34 AM

Thanks for posting that. I was just talking about this on set the other day with someone that experienced the same. And I noticed yesterday I had one of my posts upside down as well (although never had a problem)

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#4 Michael Sanchez

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Posted 28 February 2014 - 10:07 AM

Glad you are okay from the incident.

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#5 Osvaldo Silvera SOC

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Posted 01 March 2014 - 12:57 AM

Thanks for posting!

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#6 JobScholtze


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Posted 01 March 2014 - 08:25 AM

Happend to me too. Lesson learned

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#7 ClausStuhlweissenburg


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Posted 01 March 2014 - 10:06 AM

Same here

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#8 Tommy Stork

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Posted 04 March 2014 - 01:48 PM

Just an informative tip! It has been covered many times in various forms from print to social media and forums but for those who have missed it in the past. Those of you using any PRO Atlas or Titan arms use a 6,8,10 or 12 inch Pro gimbal arm post at the D-link and gimbal handle connection for day to day operation and while using the Pro low mode bracket. There are two small holes drilled into every Pro post for the insertion of safety pins and or bolt for the low mode br...acket. The end of the post with the small hole closest to the end of the post or .2250 for you techy folks out there. This is the end that goes into the gimbal handle and the end the gimbal post clamp is mounted to. PLEASE check your equipment and ensure this is mounted properly. From the desk of Jack Bridges, President Gpi Pro Systems Inc.
Have a great day everyone :))))
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#9 Howard J Smith (Temp)

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Posted 08 March 2014 - 03:21 PM


We sell Heavy duty arm posts with no holes in if any one would like one please PM me



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#10 Jens Piotrowski SOC

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Posted 08 March 2014 - 04:58 PM

so does Greg Bubb at XCS



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#11 thomas-english


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Posted 09 March 2014 - 08:44 AM

Same thing happened to me. Fully loaded Alexa in an AR rig and 4 batteries. Weirdly I caught the whole rig it was when I was balancing and the gaffer helped me. No harm done apart from my nerves. 


I for one would have liked to have seen a little more of a warning on the arm when I bought it. Possibly in the form of a sticker or something embossed on the arm. I've been reading about the PRO arm for 12 years and I had never seen this warning. 


Is there anything else I need to know? 

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#12 Jens Piotrowski SOC

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Posted 09 March 2014 - 10:39 AM

the PRO arm is not engineered for back-mounted vests, the eye-bolts will fail eventually...

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