Arm Post Sizes

[Christian Ramirez-Coll]

Hello everyone,

 

I just want to compile a list of arm post sizes. Please add or correct me when I am wrong:

 

Master Series, Ultra, Shadow, M1: .725 (3/4")

3A, PRO ARM (Titan & Atlas?): .625 (5/8")

Flyer, Pilot, Archer, ProVid: .500 (1/2")

 

Thanks.

[Tom Wills]

A couple of quick corrections/notes:

 

Tiffen "Large" size is actually a shade under 3/4", at around .740"

 

And all of these sizes are nominal - a 5/8" (.625") shaft will likely not fit well, if it fits at all, into a PRO gimbal, because there does need to be some tolerance for the arm post to fit easily into the gimbal handle. I believe the Tiffen sizes tend to be on-size (or a thousandth or two smaller) for the arm posts, and have the few thousandths of tolerance in the gimbal handle, but all of my PRO arm posts are undersized (about .623" from PRO, down to about .621" for some others I've collected).

 

Hope that helps!

[Christian Ramirez-Coll]

Thank you Tom it does?

[Jerry Holway]

Arm post for Archer, Pilot, etc. is about .495 -.493

[Christian Ramirez-Coll]

Thanks, Jerry,

 

Corrected list:

Master Series, Ultra, Shadow, M1: .740 (a shade under 3/4) ???

3A, PRO ARM (Titan & Atlas?): .621, .623 (a shade under 5/8)

Flyer, Pilot, Archer, ProVid: .495, .493 (a shade under 1/2)

These leave room for "some tolerance for the arm post to fit easily into the gimbal handle" (Tom Wills) I feel the first number may still be wrong. Should it be lower than .740?

Thanks.

[Jerry Holway]

Tom is correct. .740.

[Hugo Longtin]

Hi, I have a specific question. Will a G50 arm fit a Pro sled? thanks

[Jerry Holway]

With the right arm post, of course.

[Hugo Longtin]

Thanks Jerry

[steadiz]

WTB: Arm Post- Pro Arm to Flyer LE

[Rob Turner]

Hey guys,

does anyone know the size of the Grub screw that goes in a G50 arm post? 

Many thanks,

 

Rob Turner

[Andrea Falcucci]

On 3/31/2018 at 6:04 PM, Christian Ramirez-Coll said:

3A, PRO ARM (Titan & Atlas?), Arm X1: .625 (5/8")

In case other user will search for this info, also Arm X1 has 0.625 (5/8") arm post.

[shad wyckoff]

I recently bought a Volt gimbal for my Pro sled.  I also fly a pro arm and am looking for anyone who makes arm post that can be put into a pro arm and also fit into the Steadicam Volt.  Called Robert Luna but he was out.  Any other leads  

[Lawrence Karman]

3 hours ago, shad wyckoff said:

I recently bought a Volt gimbal for my Pro sled.  I also fly a pro arm and am looking for anyone who makes arm post that can be put into a pro arm and also fit into the Steadicam Volt.  Called Robert Luna but he was out.  Any other leads  

Tiffen includes a handle that will accept PRO sized posts (5/8") with a Volt. Did you not specify that when you bought it?