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Arm Post Sizes

Arm Posts Sizes PRO Tiffen Mater Series ProVid M1

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#1 Christian Ramirez-Coll

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Posted 31 March 2018 - 11:04 AM

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.


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#2 Tom Wills

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Posted 31 March 2018 - 05:43 PM

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!


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#3 Christian Ramirez-Coll

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Posted 01 April 2018 - 08:30 PM

Thank you Tom it does?


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#4 Jerry Holway

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Posted 05 April 2018 - 10:01 AM

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


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#5 Christian Ramirez-Coll

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Posted 05 April 2018 - 01:25 PM

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.


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#6 Jerry Holway

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Posted 05 April 2018 - 01:58 PM

Tom is correct. .740.


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#7 Hugo Longtin

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Posted 22 July 2018 - 08:27 AM

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

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Posted 22 July 2018 - 12:15 PM

With the right arm post, of course.


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#9 Hugo Longtin

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Posted 23 July 2018 - 06:51 AM

Thanks Jerry
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Also tagged with one or more of these keywords: Arm, Posts, Sizes, PRO, Tiffen, Mater Series, ProVid, M1

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