3x3 Dayan Guhong Pro M - Impressions - WOW!!!

Dan the Beginner

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It’s unbelievable!

I got the two 54mm versions of this cube (the Spring and Maglev version). Although I watched Phil’s video, I was still blown away by how good they are, considering how reasonable their prices are. Disclaimer first. I’m not actually a “speedcuber”, as I average around 50s and my highest TPS in any step of a solve is under 4. I am however very interested in 3x3 cube designs and in playing with them. Here are my subjective impressions and initial findings.

These Guhongs are new and need more breaking in and most likely more adjustments. However, I think they are very close if not on par with the best performing cube that I own, the Tornado V3 Flagship! What?! :oops: 😄 I also compared them to the cube I like most of all, the Tornado V2 (with core magnets), and another cube that is also my favourite, the Picube special edition of Moyu’s V9. Results: Unbelievable. These Guhongs perform better than the smooth Tornado V2 and the Pi V9, IMO, though they do not have some qualities the others have, eg in quietness (Tornado V2) or build quality. The Maglev version of the Guhong is the one I like better out of the new Guhongs, as it is a little quieter and it feels more controllable. I did not feel any weird behaviour from the Maglev, which is great and I really like how this version works. It is the first time I like a Maglev version more than the same version with springs. Perhaps the ring-in-ring magnet system actually does something. I think there is another reason I like a Maglev cube this time, it is only 74g. (I like small, quiet and light cubes with a great performance. Having been disappointed by the Gan Mini M Pro, I am over the moon this time with this small cube.) This Maglev version will be added to the three existing favourites that I will have to choose from when I want to take just one out with me, already a difficult decision. A couple of negatives, but they are minor. The pieces are glossy but that makes the imperfect surface more noticeable, though the problem is about the same as with the Moyu Weilong AI cube. The edges of the pieces are occasionally sharp, but again only very minor and noticeable when you deliberately look for it. The quality of construction definitely is not as good as the Tornados. There are no other adjustments possible besides the compression (which I think also affects the tension, since the repulsion force should be increased as the magnetic rings are pushed closer together). At this time, given how well the cubes turn after the quick adjustments, I do not feel that the lack of adjustments is a significant problem. In fact, it can be seen as an advantage for a low cost cube. YMMV, but my initial experience is very positive indeed. It's great to see such great value in speedcubes, contrary to the direction some other makers seem to want to set. 👏👏👏

If you are interested, the below describes the preparations and settings of the cubes I used in my comparisons.

The old cubes have all been broken in and adjusted and readjusted. The new cubes are not as oily as other Tengyun Dayan cubes I bought before. After wiping as much of the oil as possible without dissembling, i.e. using a bread knife wrapped with tissue to clean in between the pieces, and wiping the faces clean with Costco lens wipes, these Guhongs are already feeling and looking great. Shiny, small (which I like), and turning wonderfully, though a little too fast for me. I left the Guhong Maglev’s only setting at “1” added 4 drops of Nebula and it worked fine. I thought the Spring version was too loose and I set it to “4". Those adjustments (going from 1 to 4) didn’t make that much difference. I added 5 drops of Nebula to the Spring version.

My 73g Flagship is the older version (not a ball shaped core, but it has core magnets), the settings are 3:2:2 (compression, tension, magnet). It is a little noisier, less smooth and less pretty, and also a little bigger than my favourite of all time, the CH Tornado V2. However it is a few grams lighter and importantly for this assessment, it is the best performing cube I have and it turns so well and is so consistenly reliable that I can only blame myself for not solving faster.
 
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From left, CH Tornado V2, Guhong Pro M Maglev, Tornado V3 Flagship. The Guhong's centre cap has a wider bezel near the holes. The top of each centre cap is a perfect circle. Could these shapes be the reason for its effortless turning? It feels crispy and nice, not unlike the Tornado V3. I have not had any corner twists as yet.
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Glossy but imperfect surface. You see it but can't feel it in solves. No need for UV here, but not pretty to look at.
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These two cube makers offer some products with really great value, IMO. In the case of the Guhong Pro M, it's about "ball core" plus real performance at a great price. If you also like small 54mm cubes and a glossy finish - it's a godsend. 👍
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for the 54mm, is every piece 54/3=18mm in width? I remember there is a cube has a bigger edge/center piece than the corner piece, this is not the one, right?
 
for the 54mm, is every piece 54/3=18mm in width? I remember there is a cube has a bigger edge/center piece than the corner piece, this is not the one, right?
Yes, the pieces all have the same width. The Gan Mini M Pro is the one with a wider 19mm width for edge pieces and centre pieces, but 17mm width for the corner ones. Not sure if that is legal for competitions.
 
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Compared to two other recent favourites, both are special. The Pi special edition is really good, and pretty, but a little big for my hands. I think its magnet strength is a tiny bit strong for me but not adjustable. So, I put the Guhong Maglev above it. If I want to use a bigger cube, for performance, I choose the Tornado Flagship (55.5mm) and it is adjustable and quieter. The Pi cube is prettier and gets picked to show off. The black QiYi M Pro is also special, and it is surprising good for its basement price. It however tends to be catchy occasionally and loses to the Guhong in most areas, though not by much. It's a solid value cube for anyone who wants the lowest price and good performance.

This may be significant. I feel that by making maglev behave similarly to spring, so much so that many could not tell the difference, Guhong succeeded at least in getting rid of spring noise, if not improving tension characteristics, and they have done it without much increase in weight or in price, when they do away with springs. My guess is that the super gradual setting adjustment is the key. I also increased the compression in my Maglev Guhong from 1 to 4 (again with only subtle difference). I put in more thick lubricant, and now it feels as perfect as I can make it. The 74g Maglev Guhong compared to the regular Spring version, feels more stable to me. With such little penalty in weight and price, and no discernible disadvantage in behaviour due to maglev, I would choose the Maglev version.

Summary. This is an exciting release, after all the many many other confusing and often expensive 3x3 cubes released earlier this year. Glossy, inovative maglev, ball core, 74g, Tornado Flagship like performance, all for $20. And you can get it in 54mm. The adjustments are very limited but the chosen magnet strength and tension etc feel just right, at least for me, making the experience very nice. I hope they are for you too. YMMV. I'm sure there are people who enjoy twiddling and trying 4000 setting combinations. 😉😆
 
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Yes, the pieces all have the same width. The Gan Mini M Pro is the one with a wider 19mm width for edge pieces and centre pieces, but 17mm width for the corner ones. Not sure if that is legal for competitions.
So are all 8 corners on the Gan mini 2mm below the surface of the edge pieces on all 6 faces?
Images of the mini look like they're all the same. Not doubting, just hard to picture.
 
The width of the edge piece is regular, but the length of it is different.
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like this, so i guess only the center cap and the corner piece is cube shape, but the edge piece is a rectangle.
 
View attachment 26592

Compared to two other recent favourites, both are special. The Pi special edition is really good, and pretty, but a little big for my hands. I think its magnet strength is a tiny bit strong for me but not adjustable. So, I put the Guhong Maglev above it. If I want to use a bigger cube, for performance, I choose the Tornado Flagship (same size) and it is adjustable and quieter. The Pi cube is prettier and gets picked to show off. The black QiYi M Pro is also special, and it is surprising good for its basement price. It however tends to be catchy occasionally and loses to the Guhong in most areas, though not by much. It's a solid value cube for anyone who wants the lowest price and good performance.

This may be significant. I feel that by making maglev behave similarly to spring, so much so that many could not tell the difference, Guhong succeeded at least in getting rid of spring noise, if not improving tension characteristics, and they have done it without much increase in weight or in price, when they do away with springs. My guess is that the super gradual setting adjustment is the key. I also increased the compression in my Maglev Guhong from 1 to 4 (again with only subtle difference). I put in more thick lubricant, and now it feels as perfect as I can make it. The 74g Maglev Guhong compared to the regular Spring version, feels more stable to me. With such little penalty in weight and price, and no discernible disadvantage in behaviour due to maglev, I would choose the Maglev version.

Summary. This is an exciting release, after all the many many other confusing and often expensive 3x3 cubes released earlier this year. Glossy, inovative maglev, ball core, 74g, Tornado Flagship like performance, all for $20. And you can get it in 54mm. The adjustments are very limited but the chosen magnet strength and tension etc feel just right, at least for me, making the experience very nice. I hope they are for you too. YMMV. I'm sure there are people who enjoy twiddling and trying 4000 setting combinations. 😉😆
Was choosing between Qiyi M Pro and Tengyun V1 for a stickered cube and I chose the latter, please dont make me regret qiyi/dayan
 
It's possible to adjust magnet strength by adding or replacing the magnets inside the pieces (like what used to be done with the RS3M 2020). Note the hole at the bottom of the torpedo of the edge pieces. Is it for putting a magnet in?
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The 54mm Guhong Pro M has an orange ball core.
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Update. If anyone is worried that this cube is fragile, due to the reputation of the previous Guhong V4, don't. My Guhong Pro M Maglev 54mm has twice been dropped from about 1 metre onto hard tiles. No pop, no loose magnet, and everything is still perfect. If you look at the photos again, you can see that the stalk of the corner piece is thick. Also, the core magnets are all securely wrapped up by the plastic around them. I still have not experienced any corner twists. It is already broken in. So quick. I now like it even more than the Tornado V3 Flagship. They feel very similar, which is uncanny, but this new Guhong is smaller, just right for me.

I now rank it my #2 favourite, after the CH Tornado (a really nice feeling and quiet cube). The other favourites are Tornado V3 Flagship, Picube special edition V9, and my special smartcube - the Moyu Weilong AI cube with pieces swapped from Moyu Weilong 2021.

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Nobody's going to mention it…?

"Dayan" is the name of the brand, not "Tengyun".
Dayan is correct name of the brand. Senior moment. 😆

Tengyun and Guhong are both models from Dayan. Thanks for pointing out my mistake. I have corrected the mistake in the previous posts above.

Very confusing, these names, aren't they? Also, Dayan and Guhong, in Chinese, apparently can both be referring to the same kind of bird.
 
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Detailed photos of the spring/maglev system. More fine tuning should be possible after disassembling it.

🛑 Warning. 🛑 I'm not responsible for any damage, if you attempt this.

Turning clockwise while pushing down the top piece unlocks and shows the lower circular box housing the spring (or ring magnets).
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The box can be taken out using pliers.
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This is prevented from popping by 3 tiny lugs on the rim at the top of the outer cup. The lugs catch the flange ring at the bottom of the inner cup, if the ring reaches the top of the outer cup, when pushed by three spring.
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You have to carefully tilt the inner cup to create moving space and then pull it past those lugs to get it out. I used pliers and this can cause damage if you are not gentle.
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There is only one washer, at the bottom of the spring.
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So, it is possible to change the springs, or ring magnets if you are able to find suitable replacement. A simpler adjustment is to just add an additional washer to the top of the spring (if more compression is desired than what's possible using the setting dial. )
 
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