List of Centre Post Sizes

[John E Fry]

Hi all,

 

I'm trying to compile a comprehensive list of Steadicam centre posts. Just for interests sake really, but could be useful for those trying to upgrade, repair or replace their posts, gimbals or upper/lower boxes.

 

Here's the rough list I have so far - but what's wrong, incomplete or missing?

 

[Janice Arthur]

John;

 

Very nice, thanks for doing this.

 

If you could add a column for arm post diameters that would be helpful too.

 

Many times people miss that detail because they're are now so many. A la carte parts and generations mean the arms don't often match the gimbals.

 

Thanks,

 

Janice

[John E Fry]

Hi Janice,

 

Actually there's already a column for that - Post dia. x sections. Diameters of those I have first, followed by number of sections. I'm missing a few though - know what diameter the Archers & Clippers are?

 

I'll break that column into two for the final version. Any details not quite right?

[Alec Jarnagin SOC]

John, I'm sorry, but this is very confusing. I believe you're trying to list the center post size AND the diameter of the arm post that fits into the gimbal, yes? If so, there are some mistakes.

 

The 3/3a is a 1.5" center post and the gimbal requires an arm post with a diameter of 5/8".

 

The Master series and all Ultra sleds are 1.58" center post using a gimbal that takes a 3/4" arm post.

 

The 3/3a standard was why GPI PRO also used a 1.5" center post and the gimbal requires an arm post with a diameter of 5/8".

 

XCS was the first manufacturer to switch to a 2" center post but they kept the original 5/8" arm post size for their gimbal yoke.

[Janice Arthur]

John;

 

Yes make two columns and what alec said.

 

I missed the distinction.

 

Janice

[John E Fry]

Ah, fantastic! Thank you, that's the sort of response I was hoping for.

 

Some of the models I can find no info on anywhere so put in whatever 'post' measurements I came across until I was corrected - some of these being the gimbal arm post sizes, not centre post, as you point out. I hoped by putting these in as so obviously wrong it would spur people to correct me, et voila!

 

I could even add an arm post column if you think that might be useful?

[Janice Arthur]

John

 

Yes an arm post column makes sense to me, that's the column I wanted.

 

The rig center post not sure what they are indetail but if you looked at monitor arm diameters that would give you lots of info!!!

[Frank Schwaiger]

Hi all,

sorry to dig this out again but I can't find the proper figures of the new M1 post diameter. Is it 2"? And if so why are so many complaining?

 

Cheers!

[Jerry Holway]

M1's gimbal post is 1.75. Some of the 1.5" posts are specified at a slightly smaller diameter. There are manufacturer's tolerances to consider, too.

[sasha proctor]

Hi John. I know this is an old post but any chance you updated your chart? I would love an updated correct version? 

[John E Fry]

Hi, 

Yes the updated (and ever updating!) version is charted up as a scrollable & sortable database, available here:

https://www.johnfrysteadicam.co.uk/the-steadicam-database/ 

I’m always looking for info to fill in the blank spaces or correct anything wrong, so do let me know if you have anything to add!

[Patrick Berg-Pedersen]

Wait! What!? Archer ARM!?!?? Does that even exist??? 

On 10/13/2017 at 9:33 PM, Jerry Holway said:

M1's gimbal post is 1.75. Some of the 1.5" posts are specified at a slightly smaller diameter. There are manufacturer's tolerances to consider, too.

Jerry, what’s the post size of the A2 SPV? 1.5"?