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5/8" Adapter for RTK Ground Station?
589 15 6-28 07:00
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EO&A
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United States
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Has anyone figured out an easy way to adapt the fitting on the RTK Ground Station to a standard 5/8" Coarse thread so you can use a real tripod with it? The DJI tripod must be made from recycled beer cans - I crushed it the second time out stomping the legs into some hard dirt.
6-28 07:00
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patiam
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LMAO @ Recycled beer cans! It IS a flimsy POS isn't it?

So you're wanting to ditch the lower half of the pole (the "extension rod") and mount the upper half on a tripod? You're looking for a fitting to go from the male threads of the lower pole half to female 5/8" x 11tpi threads you can attach to the head screw on a tripod? Wouldn't it be better to mount it on a  a tri-brach?
6-28 08:28
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EOandA
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patiam Posted at 6-28 08:28
LMAO @ Recycled beer cans! It IS a flimsy POS isn't it?

So you're wanting to ditch the lower half of the pole (the "extension rod") and mount the upper half on a tripod? You're looking for a fitting to go from the male threads of the lower pole half to female 5/8" x 11tpi threads you can attach to the head screw on a tripod? Wouldn't it be better to mount it on a  a tri-brach?

Yep, that's exactly what I want to do. The brass puck that goes in the tribrach has 5/8" course threads for prisms, extensions, etc. I want an adapter to fit the funky fitting on the RTK Ground Station and the 5/8" course threads on the tribrach. Why didn't DJI build these for real surveyors?
6-28 19:28
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patiam
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Makes sense to me.

Basically DJI has only the tiniest of clues what survey gear and software should actually look like. When they decided to do the P4 RTK, they did minimal homework and slapped together a kit that they probably thought was good to go but any real surveyor laughs at.

It's too bad because they had a real chance to fill a niche and do a good job at it. But they decided to do it on the toy company side rather than the enterprise one (but with prices matching the latter), to everyone's detriment.

I only have access to our P4 RTK on a limited basis. But when I can I will see about figuring out what the threads are on the pole coupling. Then it would just be a matter of finding an existing or machining a new adapter to get to F 5/8"x11tpi...
6-28 20:21
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DJI4Survey
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Australia
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Hey All,

We looked at off the shelf reducers to get this to fit a 5/8 tribrach adapter and had zero luck.

We ended up getting a bunch of adapters machined at a cost of approximately $150 per adapter. Ouch.

But its a lot more accurate being able to use a tribrach for leveling and reducing the height of the pole when doing survey work so was worth it in our opinion.

Its not a standard thread on the DJI pole (because, of course it isn't).  At least not in Australia.

If you want photos of what we got made up, let me know.

Cheers,
6-30 20:30
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patiam
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DJI4Survey Posted at 6-30 20:30
Hey All,

We looked at off the shelf reducers to get this to fit a 5/8 tribrach adapter and had zero luck.

Thanks DJI4Survey! Love to see it!
7-1 05:12
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Dragline49
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United States
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DJI4Survey-

I would definitely be interested in getting one of those from you. Maybe even throw a bit of margin in for yourself.

I'm currently using one of these and it seems to work pretty well: https://www.tigersupplies.com/Pr ... 48gLeAaAhjKEALw_wcB

I pretty much ...canned the included tripod within a few days.

7-2 10:04
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patiam
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I'd like to at least see pix!

@Dragline, we use similar Trimble tri- and bipods for some work but they at least have a bubble level on them. Does that one have a level?
7-2 10:15
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DJI4Survey
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Australia
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Hey guys,

Sorry have been out of commission for a few weeks.

Here is the adapter we got made up.

Essentially, I have this permanently fitted to the GPS and a Tribrach adapter.  Just take the unit out, slap on a tribrach and away you go.

Definitely can be improved, but needed a quick fix.

Let me know your thoughts.  They are only aluminium so probably not suitable to being constantly removed and re-fitted.
7-8 21:54
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DJI4Survey
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7-8 23:53
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patiam
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Nice. Looks like it works!
7-9 08:20
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Sean-newbie
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United Kingdom
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Re "They are only aluminium so probably not suitable to being constantly removed and re-fitted."  What about a helicoil for the female thread or a brass sleeve ( a bigger version of the 1/4UNC to 3/8UNC adapter which is commonly used  for camera tripods), would they cause corrosion problems?   The adapter could then be left in the DJI equipment
7-9 10:42
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fans5ee12188
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DJI4Survey Posted at 7-8 21:54
Hey guys,

Sorry have been out of commission for a few weeks.

Hi DJI4Survey, this is great! I’m wanting to 3D print an adapter for the same reasons, can you provide the specs for the thread DJI uses, please? I can’t find any information about it.
JW
7-21 11:04
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DJI4Survey
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Australia
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Hey mate,

See attached.  The issue is the actual thread.  It isn't standard and I do not have a .STL or OBJ of the part as the thread was custom measured when the part was turned.

Hope that helps.

Cheers,
7-21 14:32
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fans5ee12188
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DJI4Survey Posted at 7-21 14:32
[view_image]

Hey mate,

Wow that was a fast reply! Thank you! I’ll try to come up with something in CAD. If I can, I’ll post an .stl
JW
7-21 16:48
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Shodopan
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Found a lot of affordable tripods here. You might need to get a thread adapter to fit your device.
https://engineerwarehouse.com/collections/tripods
9-11 12:43
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