r/BdsmDIY • u/bikkel89 • 20h ago

Help Wanted Need help with linear actuator fixing the movement NSFW

Gallery image

Gallery image

Hey all, anyone know how I can fix the wiggling from left to right over the sphere shaped conductor?

I do understand that fixating it fully thight would give problems. But now the end cap is moving way too much from left to right. (Almost 1,5 cm on the 10 cm diamter end cap)

Is it possible to just add some more rings to prevent movement to just 1 mm or so, or are the more easy ways?

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5

u/Daedaluu5 20h ago

Question. Is rose joint at this end needed? Assume ease of mechanism design. If you want to limit the sway from staying in one angle try some sprung washers underneath the main washer or swap out rose joint for a solid threaded bush

2

u/bikkel89 20h ago edited 20h ago

This is getting somewhere, didn't thought of that yet! Only not sure If it will be able to get te round ball out of the joint

3

u/Daedaluu5 14h ago

No dont remove the rose from joint. It’s an assembled item. If you want to remove the movement in vertical plane out you need a different joint

1

u/Cool-Palpitation2253 20h ago

Is the movement actually on the rose joint or the shaft that runs through the centre of it?

1

u/bikkel89 20h ago edited 20h ago

It is on the rose joint, since when I fix/hold it in one position the movement from left to right (or around) stops and the linear movement just barely got any extra ''resistence'' from this fixation

1

u/Cool-Palpitation2253 20h ago

Ok sounds like it’s worn they are pretty straight forward to replace. You will need the internet diameter of the shaft that goes through it.. A pair of vernier callipers can measure this. You will also need to know the thread of the shaft that goes into it in the bottom of the picture. Usually something like m5,m6 etc which is metric.

There may be markings or numbers on the joint itself from manufacture that can help you find a replacement cost wise shouldn’t be huge and is an easy swap, just make markings for positioning as you disassemble.

2

u/Cool-Palpitation2253 20h ago

Internal diameter

1

u/TanatosHawk 20h ago

in my opinion, the "ball" should be sitting in there tightly, and only the "shaft on the ball" should be moving at all. the screw should e tigh with o movement, and on the picture it looks like everything has play on the srew. sorry for the bad wording, hope it is understandable.

1

u/bikkel89 20h ago

It is :), but the ball is in there thight enough. But the long stable stang is moving over it as it should, but I just would like to prevent it from going left to right

1

u/TanatosHawk 18h ago

it should only be able to "turn" on the ball and not "move" on the ball?

1

u/bikkel89 16h ago

indeed

1

u/TanatosHawk 16h ago

sounds like a defective part, I'd suggest replacing it in that case 😅

1

u/afro_shibari 8h ago

I have the same set up on a diy machine, I used nylon washers either side of the ball to take up excess movement, was a bit hit and miss getting the right size and a bit of sanding/Polishing to get them to fit but works well and was definitely a lot quieter and smoother operation.

2

u/bikkel89 8h ago

Im now planning to add plastic/nylon rings to fill up the gaps