RS3 M Core Screws Coming Out?

[qwr]

One solution to prevent core stripping.

Spoiler

NEVER LUBE YOUR SCREWS

That ties into another problem I have: horrendous spring noise. Like spring noise so bad it actually makes turning harder due to the friction. I'll mention this in my next video.

 

[Cubing Forever]

That ties into another problem I have: horrendous spring noise. Like spring noise so bad it actually makes turning harder due to the friction. I'll mention this in my next video.

If that's the problem, then why not do the plastic bag mod altogether instead of lubing springs?

 

[qwr]

If that's the problem, then why not do the plastic bag mod altogether instead of lubing springs?

I don't know what you mean by "altogether". My core is already lubed and I want to keep it that way for the spring noise, so I will do the teflon tape thing in my video.

 

[Cubing Forever]

I don't know what you mean by "altogether". My core is already lubed and I want to keep it that way for the spring noise, so I will do the teflon tape thing in my video.

Instead of wrapping the screw after it strips, you can do it while you're setting up the puzzle for the first time. I used the wrong word lol

 

[qwr]

Instead of wrapping the screw after it strips, you can do it while you're setting up the puzzle for the first time. I used the wrong word lol

That's true, although I have setup many puzzles and the screw stripping only happens rarely.

 

[qwr]

I made a video on this in which I try to fix the screw and spring issues.

Also I made a meme thumbnail but I didn't feel like using it. Maybe I should have

I just had a stupid idea while I was looking at the springs while playing with the cube before bedtime. What if I glued the spring to the screwhead so the spring would stay vertical and would have to have the rotational contact with the washer? I should try it tomorrow.

 

[povlhp]

Get a plastic washer (3D printed ?) for the screwhead. Anybody with a 3D printer can make them in steps of 0.2mm thickness.
I also believe that lubrication under the lower washer might help. Some people with good lubrication says neither screw/spring/washer is turning. Su lube under lower washer is important.

 

[qwr]

Get a plastic washer (3D printed ?) for the screwhead. Anybody with a 3D printer can make them in steps of 0.2mm thickness.
I also believe that lubrication under the lower washer might help. Some people with good lubrication says neither screw/spring/washer is turning. Su lube under lower washer is important.

I don't have a 3d printer but I thought about buying some thin metal washers and trying them.

My original stupid idea was soldering the spring and screw together although soldering is not fit for mechanical stress and it should be done with welding which is way beyond me

 

[Oliver Pällo]

yes i have had the same issue and on the red side as well. it has happened once for me.

 

[SH03L4C3]

I guess im the only one that got a whole screw bent! Strange...
edit: I easily straightened it out with a wrench.

 

[Shady Hero]

I got a Moyu RS3 M 2020 yesterday, and I'm loving it. It clicks with my turning style like no other cube has, and is easily going to be my main. However, something annoying has been happening lately. 3 times now, as I'm turning the cube, the screw inside the red center that attaches it to the core of the cube has come out! I managed to catch this on video (it's an mp4 - not sure how to share it), and I'm wondering if anyone has advice. The screw isn't stripped out, which leaves me to believe the problem is with the core.

I also saw that a few people on the cubicle mentioned they had this same problem. I'm hoping there is a workaround because the cube is incredible. Is there another core I can substitute, is anyone else having this problem?

Thanks for any help

yeah, this happened with my white side, so I just took out the white center(screw and all) and swapped it with the yellow center, it hasnt come undone since, and i've had it like that for like 5 weeks now, so maybe try that...

I've been trying to figure out why the RS3M 2020 has such bad spring noise, and I noticed that the springs seem to go "crooked", that is they're not perfectly vertical due to their large diameter. Combined with the fact that the springs have a large diameter about the size of the screw head, the end of the spring actually rubs against the side of the screw head instead of the bottom like normal. I think this could've been avoided by choosing springs with a smaller diameter.

You can see what I'm talking about in this picture on the left side of the screw head. The spring does not stay centered.

View attachment 14900

get some lubicle black or something similar

 

[qwr]

get some lubicle black or something similar

I don't think the choice of core lube is the issue. Rather my post explains it due to the spring choice.

I guess im the only one that got a whole screw bent! Strange...
edit: I easily straightened it out with a wrench.

how? did it come like that?

 

[qwr]

I wanted to say that I lubed the core with traxxas 50k and the red side which is the one that loosened has lube all over the center cap. Maybe the lube leaked down and loosened the screws? Honestly I'm not sure what's going on in that center.

Ok so I've messed with the cube a lot and want to return to what I said. I think my hypothesis was correct, since the centers that came loose had darkish lube leaking down along the screw from the center pieces to the core, and the center dual adjustment system plastic part was drenched in core lube that I am pretty sure I overlubed. What I did was clean out the cube thoroughly and completely, I mean wiping away even the core lube, then I applied a very minimal amount of lube only under the washer, making sure any excess was wiped away. After tightening the cube, this minimal setup actually make the cube faster and much less gummy, and after 20 solves the cube suddenly broke in had has a nice crispy and moderately quick turning which I quite like. So like people said about lube, start off minimal and overlubing can be worse than underlubing.

 

[povlhp]

A friend of mine came to me with his RS3M, stock, never lubed, 1 month old. It had become very lose. Not screws falling out, but still very lose. So screws DO come out.
Gave it a lube job, and gave him some magnets he can put in it, but he decided then and there to buy lube himself. His son could not believe this was the same cube.

 

[SH03L4C3]

how? did it come like that?

It was not like that when I first set it up back in November/december.
I had removed the screws for the first time after that to see a bent screw. I think I have a pic. Will edit to add the pic later.

 

[povlhp]

Ok so I've messed with the cube a lot and want to return to what I said. I think my hypothesis was correct, since the centers that came loose had darkish lube leaking down along the screw from the center pieces to the core, and the center dual adjustment system plastic part was drenched in core lube that I am pretty sure I overlubed.

If lube gets down and losens the screw, either the tread is not very good, of the lube is eating the plastic. ANd there is no way thick lube should get down there.

 

[qwr]

If lube gets down and losens the screw, either the tread is not very good, of the lube is eating the plastic. ANd there is no way thick lube should get down there.

I used traxxas 50k and it's pretty thick but not as thick as say grease because it's an oil. The screw hole for the core and the dual adjustment system both allow some lube to leak through. Also the screw threads are really tiny which may have contributed to them loosening.

 

[SH03L4C3]

If lube gets down and losens the screw, either the tread is not very good, of the lube is eating the plastic. ANd there is no way thick lube should get down there.

the problem is with the tread not being good.

That ties into another problem I have: horrendous spring noise. Like spring noise so bad it actually makes turning harder due to the friction. I'll mention this in my next video.

BTW fun fact: If you don't have lube, and you want to get rid of rs3m spring noise, flip the washers. That should get rid of some noise.
sorry for double post