Review – DYS Mini Quad Props and CrossHobby Propellers

I received some propellers to try out from DYS and Xperdrone (Hobby Cross). They have various sizes: 3 inch, 4 inch, 5 inch and 6 inch. I ran some thrust test on them comparing to HQ and Gemfan props of the same size, and also see how well they perform in real flights and how crash resistant they are.

The DYS propellers I tested came directly from DYS. The Cross Hobby props were from XpertDrone.

DYS Mini Quad Props

DYS sent me their “bi-blade” props in 3030, 3545, 4040, 4045, 5045 and 6040 sizes. They are all bullnose props.

dys props mini quad 6040 5045 4045 4040 3545 3030 sizes propellers bullnose

They appear to be similar material we see on the DAL indestructible props. They are lighter (weight about 20% lighter than HQ props), and flexible (can be bent easily by hand)

dys props mini quad material indestructible shiny

There are 4 colours to choose from for each type of props: red, green, orange and black.

dys props mini quad propellers colours red orange green black

They are very crash resistant! I deliberately flew my quad into bushes and trees a few times, propellers didn’t break, only tiny marks on the edges of the blades. However when I took off again, I felt the quad started to get some slight vibrations, I reckon the props might be slightly bent due to the crashes, which wasn’t visible at all from the outside, something you need to be aware of when using them.

There is a trade off between normal and “indestructible” props, if they don’t break, they have to transfer the force somewhere else, e.g. they put more stress on your motor shaft and bearings. The props also sometimes get bent, and cause vibrations.

dys props mini quad indestructible after crash broken

Another good thing about these DYS props is the removal of prop adapter rings! Gemfan is slowly getting rid of them, and HQ is still using them.

Prop adapter rings allows you to fit the hub on prop shaft of different diameter, without any gaps. But nearly all the mini quad motors nowadays use 5mm prop shafts, which is becoming a standard. The ring is annoying to put on props, and it often gets stuck on the prop shaft when you remove the prop.

dys props mini quad hub adapter ring HQ propeller

Thrust Data and Flight Performance

Here is some data from my thrust test.

Apart from the 5045 bullnose, DYS showed more efficiency than HQ props. Although it generates a bit less thrust (in some cases more thrust), it draws less current and gave me considerably longer flight time. On the 4″ and 6″ props, the HQ feels more floaty when comparing directly to the DYS props, which I don’t really like. DYS felt a more agile, great for doing acro moves and racing.

Overall, good efficiency, good peak thrust, “indestructible”, great for practice and messing around! Not the 5045 bullnose though, I would probably stick with Gemfan for that particular size.

4040BN, 4045BN and 5045BN Props on 2300KV motor

  • Motors: Emax RS2205 2300KV
  • ESC: Littlebee 20A ESC
  • Battery/Voltage: Turnigy Nanotech 4S 1800mah 65C – 16.2V
Props % Peak Thrust – g Peak Current – A Max Power – W Efficiency – g/W
HQ4045BN 50 258 4.8 77.8 3.32
  100 633 20.3 328.9 1.92
DYS 4045BN 50 262 4.6 74.5 3.52
  100 630 17.3 280.3 2.25
DYS 4040BN 50 213 3.5 56.7 3.76
  100 579 14.4 233.3 2.48
GF 5045 BN 50 390 5.5 89.1 4.38
  100 880 23.2 375.8 2.34
HQ5045 BN 50 408 6.9 111.8 3.65
  100 1027 30.1 487.6 2.11
DYS 5045 BN 50 389 7.0 113.4 3.43
  100 920 28.5 461.7 1.99

6040BN

Motors: Cobra 2204 1960KV
ESC: XM20A
Battery/Voltage: Turnigy Nanotech 4S 1800mah 65C – 16.2V

Props % Peak Thrust – g Peak Current – A Max Power – W Efficiency – g/W
KingKong 6040 50 375 5.1 82.6 4.54
  100 911 22.5 364.5 2.50
DYS 6040 BN 50 425 5.4 87.5 4.86
  100 978 20.8 337.0 2.90
HQ6045 50 465 6.4 103.7 4.48
  100 970 24.1 390.4 2.48

4045BN on 2600KV motor

Motors: Emax 2205 2600KV
ESC: Littlebee 20A
Battery/Voltage: Turnigy Nanotech 4S 1800mah 65C – 16.2V

Props % Peak Thrust – g Peak Current – A Max Power – W Efficiency – g/W
DYS 4045BN 50 299 6.6 106.9 2.80
  100 720 24.1 390.4 1.84
HQ 4045BN 50 288 6.2 100.4 2.87
  100 720 25.3 409.9 1.76

Cross Hobby Props

The Cross Hobby props I received were 6045, 5050, 5045 and 4045 bullnose props.

Manufacturer of Cross Hobby is based in China, and their aim is to achieve quality and price balance for all flyers. They are planning selling these props at a low price of USD$1.68 per set (4pcs).

cross hobby mini quad props propellers 4045 5045 5050 6045 bullnose

They are also not using adapter rings which is good.

cross hobby mini quad props propellers bullnose hub adapter ring

The 4045, 5045 and 6045 look exactly like the HQ props from appearance, here is a side by side comparison between the Hobby Cross (green) and HQ 4045 (orange) propellers. However they weight considerably lighter than the HQ (nearly 25% lighter), so that suggess the material used is probably quite different.

cross hobby mini quad props propellers 4045 bullnose HQ side by side

And they break easily just as fragile as the HQ if not worse, normally at the hub. Propellers breaking isn’t necessary a bad thing though. You can see it as a way to protect the motors. And also in some cases, for example in a free style flying competition, you want to make sure your props are not bent and in the best state, with indestructible props you might not be able to tell until you are in the air.

cross hobby mini quad props propellers 5045bullnose break hub

Another light crash, you can already see the white crease line around the hub.

cross hobby mini quad props propellers 5045 bullnose after crash line crease

Thrust Data and Flight performance

The 4045BN props runs fine on a 180, not particularly better or worse than the HQ overall, but more affordable than the HQ.

The 5045BN feels a bit under powered, but it seems to have higher RPM and active braking works pretty well (from the sound).

The 6045BN is NO GOOD at all. They disintegrate mid air when we punched throttle!! (props break at prop hub)

The 4045 and 5045 props are flyable, the 6045 is not recommended at all as they seem to explode mid air, again around the hub (which seem to be a weak point for this prop). The testing setup were 2206 2200KV motors on 4S.

4045BN, 5045BN on 2300KV Motor

Motors: Cobra 2204 2300KV Motor
ESC: KISS 24A Race ESC
Battery/Voltage Turnigy Nanotech 4S 1800mah 65C – 16.2V

Props % Peak Thrust – g Peak Current – A Max Power – W Efficiency – g/W
HQ 4045 BN 50 235 4.3 69.0 3.41
  100 588 18.2 294.8 1.99
Cross Hobby 4045 BN 50 198 3.8 61.6 3.22
  100 540 17.6 285.1 1.89
Gemfan 5045 BN 50 375 4.7 76.1 4.93
  100 865 21.0 340.2 2.54
HQ 5045 BN 50 369 6.4 103.7 3.56
  100 862 27.2 440.6 1.96
Cross Hobby 5045 BN 50 352 6.1 98.8 3.56
  100 811 25.7 416.3 1.95

4045BN on 2600KV motor

Motors: Emax RS2205 2600KV
ESC: KISS 24A Race ESC
Battery/Voltage Turnigy Nanotech 4S 1800mah 65C – 16.2V

Props % Peak Thrust – g Peak Current – A Max Power – W Efficiency – g/W
HQ 4045 BN 50 311 6.4 103.7 3.00
  100 776 27.0 437.4 1.77
Cross Hobby 4045 BN 50 280 5.9 95.6 2.93
  100 740 26.5 429.3 1.72

5045BN, 6045BN, 5050BN on 1960KV Motor

Motors: Cobra 2204 1960KV Motor
ESC: KISS 24A Race ESC
Battery/Voltage Turnigy Nanotech 4S 1800mah 65C – 16.2V

Props % Peak Thrust – g Peak Current – A Max Power – W Efficiency – g/W
HQ 5045 BN 50 344 4.8 77.8 4.42
  100 787 21.6 349.9 2.25
Cross Hobby 5045BN 50 323 4.2 68.0 4.75
  100 765 20.4 330.5 2.31
Cross Hobby 5550BN 50 392 5.5 89.1 4.40
  100 840 25.3 409.9 2.05
HQ 6045 50 453 5.4 87.5 5.18
  100 1032 23.5 380.7 2.71
Gemfan 6045 50 406 4.8 77.8 5.22
  100 960 23.7 383.9 2.50
Cross Hobby 6045BN 50 443 6.5 105.3 4.21
  100 880 28.9 468.2 1.88

7 thoughts on “Review – DYS Mini Quad Props and CrossHobby Propellers

  1. Matt

    Hi Oscar,

    I don’t have a comment on props, but a comment on your blog. I use an RSS reader app (Newsify) to read blogs on my phone offline on the Tube. Your blog’s RSS feed only shows a preview of each article. Could you please change it so that it shows the full content of each article?

    Matt

    Reply
    1. Oscar Post author

      Hi Matt

      I understand your inconvenience, but sorry at the moment I can’t do it…
      I tried it before, all it did was allowing some nasty people to copy and paste my articles using scripts, as soon as I publish an article…

      thanks
      Oscar

      Reply
  2. Irock1985

    How come no one does test with the KingKong 5045’s. I have about 5 boxes of them and they seem to be pretty popular at the moment but I have yet to see thrust data for them

    Reply
  3. Daryn

    To be honest, I’ve been on the fence about what prop to use. Tried the tri blade DAL 5045 props on my 2204 T-Motors and on the 2 minor crashes; i.e hitting the side of a branch my props have broken at the hub, literally taking 1/3 of the hub with the prop. Literally just 2 crashes and my T-Motors sound like a stoners grinder. There isn’t much of a middle ground at the moment with props since typically they’re either fragile and shatter when you breathe on them or they’re strong enough to take a tree branch with them.

    Reply
    1. QuadroBro

      I’ve never hit a tree limb and walked away with perfect props and depending on the tree, they will always break. That being said, the 5045J and 5045BN from DAL are by FAR the most crash resistant props I’ve used. They DYS Tri-Blade and DAL 5040’s are complete jokes by comparison and shatter at the hubs in crashes where the 5045J and BN would MAYBE need to be bent back into shape. Maybe I’m going harder than I realize, but compared to some of the best racers in the area, I’d say my crashes are moderate at best.

      Reply

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