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Sticking arm post


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#1 Daniel Abboud

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Posted 14 April 2007 - 11:53 PM

Hi Folks!

I just bought a used rig and i have one problem. It has a IIIa arm with a bare aluminum arm post which mates with a Masters Gimble. It slips into the gimble easily, but when it under load the post sticks and the gimble won't swivel. Any Suggestions on how to fix this? Does the post need to be annodized?

Pls help?
-Daniel.

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#2 Louis Puli SOC

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Posted 15 April 2007 - 01:28 AM

Hi Folks!

I just bought a used rig and i have one problem. It has a IIIa arm with a bare aluminum arm post which mates with a Masters Gimble. It slips into the gimble easily, but when it under load the post sticks and the gimble won't swivel. Any Suggestions on how to fix this? Does the post need to be annodized?

Pls help?
-Daniel.


Hi Daniel
This has always been a problem with the 3,3a arm post where you lock off the post on the arm .
The best way around this problem would be to use a post collar with a delron washer and don't use the lock off on the arm it self .This way the post would move freely in the arm and in the gimbleas well
Pro sale them .
All the best
Louis Puli from down under
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#3 RobVanGelder

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Posted 16 April 2007 - 04:27 AM

interesting, that groove in your post, why is that?

Personally, i am not always fond of a moving post in my gimbal, i feel it often "stabilizes" in a position that is most balanced for the forces in the system (upper part of arm and gimbal in same direction) but that is not always a convenient postion to operate.
I find it often to much forward, meaning i have to pull in the arm more then i want.

When i tune the arm socket so that it comes more towards my body, i feel that the arm often starts hitting the rig in some positions.

My armpost has a collar that can lock in a place if i want that, by the use of a adjustable locking screw.
That way i can angle the gimbal relative to the upper arm segment, giving me a better position without pulling. This is specially helpful in low mode or when you have to do running shots with one hand on the gimbal and the other arm swinging as counterbalance.

The same collar can be lifted out of the locking position, giving me a 270 degrees rotation if needed. sounds difficult? i will make a picture later if needed.

And are you sure your post is aluminium? it look like stainless steel to me, which is strong enough (i use that too for some extensions) but does not come in black.
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#4 Daniel Abboud

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Posted 16 April 2007 - 08:19 AM

Thanks Rob! Interesting ideas on the prospect of swiveling the gimble on the arm post.
As for its material, I'm 100% sure the arm post is aluminum. the reason it looks like stainless steel is because I polished it with brasso - a suggestion from one of the technicians at my local panavision.

interesting, that groove in your post, why is that?

Personally, i am not always fond of a moving post in my gimbal, i feel it often "stabilizes" in a position that is most balanced for the forces in the system (upper part of arm and gimbal in same direction) but that is not always a convenient postion to operate.
I find it often to much forward, meaning i have to pull in the arm more then i want.

When i tune the arm socket so that it comes more towards my body, i feel that the arm often starts hitting the rig in some positions.

My armpost has a collar that can lock in a place if i want that, by the use of a adjustable locking screw.
That way i can angle the gimbal relative to the upper arm segment, giving me a better position without pulling. This is specially helpful in low mode or when you have to do running shots with one hand on the gimbal and the other arm swinging as counterbalance.

The same collar can be lifted out of the locking position, giving me a 270 degrees rotation if needed. sounds difficult? i will make a picture later if needed.

And are you sure your post is aluminium? it look like stainless steel to me, which is strong enough (i use that too for some extensions) but does not come in black.


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#5 Daniel Abboud

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Posted 16 April 2007 - 08:20 AM

Thanks Loads Louis!! I'll check it out today!

Hi Folks!

I just bought a used rig and i have one problem. It has a IIIa arm with a bare aluminum arm post which mates with a Masters Gimble. It slips into the gimble easily, but when it under load the post sticks and the gimble won't swivel. Any Suggestions on how to fix this? Does the post need to be annodized?

Pls help?
-Daniel.


Hi Daniel
This has always been a problem with the 3,3a arm post where you lock off the post on the arm .
The best way around this problem would be to use a post collar with a delron washer and don't use the lock off on the arm it self .This way the post would move freely in the arm and in the gimbleas well
Pro sale them .
All the best
Louis Puli from down under


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