One thing to note, Gemfan's 5 digit naming is wonky and misleading. 51433 does not mean 4.33" pitch, I actually think it doesn't mean anything. It's a 3.5" pitch prop for some stupid reason probably only Gemfan knows. Same for 51466, 51477 etc
Really? Oh jeez. Well I guess that might explain why the pitch numbers didn't make sense to me. It's incorrectly listed on some retailers websites as well then.
I have so far tried the HQ 5x4.3x3 V2S and they were very good, way better than the Ethix S5 I had been using before. But I settled on the Ethix P3B Bi-Blade props that are actually mindblowingly good. I would have never expected the bi-blade to be that good despite them technically scoring on top. Thank you for your great work!
Now with Gemfan and a Spreadsheet. Amazing! Love all of it :) Looks like your initial choice for the AOS 5 quads was quite a good hit! As I wrote under the last vid, not realizing you just posted a sequel: A dB (A) value would be really amazing in the future.
Hi Chris, you have became the new "You'll learn something today" for me (Bardwell, forgive me please, I love you too) and I really love your effort and the information you gave to the entire community, so I think you're in some way educating better the FPV community. I love your test, but I have a little question, I tested both gemfan hurricane 51433 and tmotor 5143s, so I remember your last video and the tmotor weren't coming out very well, but I have to say that the flight feeling is amazing compared to the hurricane 51433, since it looks like I can control better my quad in the air, more like, I can do much more what I think my quad should do. Now since this is about a feeling, under the filter of your tests how can I analitically explain what I "felt"? I'm curius to try new kind of prop when I will brake all my tmotors ahahaha, but I'm afraid about how I will feel it.
Next you need the tree limb survival test. Which ones shatter into pieces compared to those that take a hit and survive with little to almost no damage. As one who flies around the trees a lot and at high speed most of the time, branch encounters are pretty often. Especially those leafless ones hanging down that you don't see until right before you smack into them.
Hey Chris! Thanks for your work! Could you test Ethix P3 and HQ J37? They are my favorite props and they're missing 😱 Btw I'll give hq 5.1x2.5x3 a try 😊
Thank you Chris, very interesting. Too bad you couldn't test the Ethix P3 (3 blades) which are some of the most flown props, I would have liked to see how they perform according to your criteria.
Great stuff Chris, much appreciated! Did you notice a correlation between efficiency and sound levels? Or was there a set of parameters that might provide a strong enough correlation to be useful?
@@DoctorrMetal Not in my experience. Had really low pitch light 3inch props that needed so high rpms that the really screamed at every maneuver where the heavier higher pitch props where clearly more silent in most Situations
@@DoctorrMetal prop noise is much more complicated than pitch. The airfoil, tip design, distance from the frame arm, distance the tips come to the frame itself are just a few variables when it comes to noise.
@@classicshooter4849 agreed, overall prop design and use case rather than a simple variable or variables. I’d be interested in db level correlated to rpm and thrust.
Chris big thx for your content, there is no easy way how ordinary customer like me for example :D can easily compare different products like props or motors before actually buying them and then not everyone has a test bench etc. This also pushed manufacturers to improve their products and so I think this content is extremely useful hence it may not be the most entertaining content in the UA-cam :D.
Thank you for the test! Super interesting to read through the results! I am mostly running the GEMFAN HURRICANE 51477-3 on my 5". Happy to see it doesn't only feel very powerful but actually produces a lot of thrust. Two things that stand out for me: it's ONE OF THE LOUDEST 5" props that I've tried and it tends to break off/lose entire blades in my typical crashes. One might say it does rather burst than bend.
Is room temperature similar for each test? Could you perhaps do a test on how air temp(density) affects thrust and efficiency? Could you also try and test the moment of inertia of a prop, and the rotational energy required to spin it up to the RPM at which it produces 1kg. We can also just test the raw time it takes for each prop to spin up to 1kg of thrust. The integral of the thrust during the spin up might also be relevant.
Wow thanks Chris for the in-depth tests and spreadsheet! I find that props that look like glass (translucent) like GemFans 5152-3 snap when crashing but they seem to provide more predictable fast flight - and my HQProps V1S seem to absorb a crash and are more prone to bend so they seem to not have that thrust (because they are bendy?)...I like both props but my question is how would a props' material composition aid in flight characteristics or would it alter/enhance your test results? Thanks again! Definitely interested in the larger 7 inch prop analysis...time here to go long range!!
Thanks a lot for the great video Chris! I am flying HQ 5x4.3x3 v2, and find them rather durable. Broken one prop while flying strait into a tree branch. Have bent few other props, then straightened them with my hands and they are still flyable, though the level of vibration has increased.
Thanks for these videos Chris. It's been really helpful because there are so many options out there it's hard to know which direction to go without a ton of trial and error. If you ever get a chance to review the lumenier gatebreakers pls post. It's JohnnyFPVs preferred props on his QAV-S. Thanks again!
Yes, I used to run them and loved them some of my favorites, but that were the earlier one that broke pretty easy and so switched to the gemfan version, how is durability now?
@@ugpfpv361 I’ve only been using them for the past 2 years maybe, my first set of T5146’s I received in a QuadBox and fell in love with them, tho I’m not sure which version those may have been, or the current iteration for that matter. However, I’ve rarely had them snap on me tho, and they definitely tend to bend rather than break, in my experience at least. Not that it’s NEVER happened, but never more often than any other quality blades do.
Personal Preferences - DAL Folds, iFlight Nazgul, Ethix . Personal Hates - HQ (especially their 3") Durability - Good: DAL range (memory is good) , Poor: HQ range sneeze and they bend and don't come back) Worst: EMax (blade losses in flight, mostly on 3" though)
So how does the information about disc-loading play into this? I have a quite heavy AOS5 with GoPro Hero 7. So I chose the biggest Prop that I could fit onto the frame, being the Gemfan 5226, and when looking at the graph showing Prop-diameter vs. weight from your other video that seems to be a sensible choice (well, the AOS5.5 with 5.5" props would have been the sensible choice but things are now the way they are and I can't afford another new frame). The same prop is included in the data-sheet of this video, and when I compare it with other props it now does not seem to be the best choice anymore regarding efficiency and thrust. Would a smaller, more efficient 5.1" or 5" prop be better or is disc-loading just as important? I will try the 6236 from Gemfan next as I do think at this weight the extra thrust could be advantious. Regarding the 51433 and 51466 from GemFan it has to be noted that the manufacturer did not stick to the standard naming of the props. On the Gemfan webpage die 51433, as an example, is stated to have a 3.5" Pitch, not a 4.33". Just a recommendation to correct that data-point in the spreadsheet. Thank you for all the hard work :) Lots of good information in all your videos. So much so, that it actually makes it harder by now to chose the perfect prop xD haha
I’ve loved the Ethix S4’s for a long time now and was a bit surprised not to see them higher in the rankings. They have been the best balance between performance and durability that I’ve found. Sure they nick and dent a bit, but I suspect that is not avoidable in any prop. When they deform they are easy to bend back, and they don’t then roast your motor or ESC. Admittedly though, I haven’t tried many others because once I switched to S4 I was pretty much sold. Guess I’m gonna have to go spend some more money… lol
Increased durability is one of the balance factors of what makes some props perform worse, whereas the best performing props might strike a tree and be unusable after no amount of rebending.
The Gemfan sbang props are very durable. They can be super bent up and still fly great. When I have crashed into trees with them they would chop off skinny leafy branches.
Awesome video, can't fault the methodology. Would be absolutely amazing if you repeated the test with 6" and 7" props on the market, I'm very curious to see the thrust and efficiency characteristics of quads bigger than 5", there is really not much reliable data online!
Ive got two 5” quads and i use the Nazgul on one and the HQV2S on the other. The Nazgul props are seemingly indestructible and can take an absolute beating, but when they break its aggressively. The V2S props are absolutely amazing performers but they are very thin blades and don’t like to touch anything. That being said, the V2S very rarely come apart and will almost always be in good enough condition to fly it back after a crash. Do not purchase the Gemfan props that have a galaxy pattern for freestyle as they will legitimately shatter like glass when they encounter anything but clean air.
For a durability test, colliding the prop with a 3D printed object meant to break, then evaluating the change in vibration at a set RPM might be a consistent test. Could use a servo to bring in the object in after the optical sensor for measuring the RPM triggers while a collision flag is active. Would also need to mark where the prop is mounted to keep the blades aligned from prop to prop.
Great work as usual. I have a request: could you, once and for all, use science to determine the airspeed of an unleaden Swallow - both varieties? A spreadsheet with the results would be highly useful to have. I can lend you my unexpurgated version of "Olsen's Standard Book of British Birds" should you need it for reference. Be a great conversation piece. . .
Thanks for all the work! Will be interesting to see, if working from the data, how the props with similar numbers from different manufacturers will feel in real life
Amazing!!! You are amazing :) Thanks a lot for all this test... It take a lot a time. And thanks to share the spreadsheet!!! If we want some more, is it possible to send you some props? Or fill a request form :').
Great video, and amazing analysis! I've used the Nepal N1, and they feel quite smooth and controlled, but durability is low. I've gone through them all realy quickly. The Hurricanes are proving far more durable. Also used the Windancers 5043 for a while and they work really well.
The Avan Flow props broke the most out of all my props. HQ 7045 x2 1vS broke almost as much as the Avan's. The GF 51466 so far have been the most durable. I only have props 5" and above breaking without being crashed.
Gemfan - Hulkies • 5055 (Gen. 1s/V1s, I know for sure were beefy. I mean, they all really are. But the Jen ones were the ones that I knew would take the hit. As opposed to [I believe] the Gen. 2s/V2s. Maybe it was V3s/Gen. 3s)
After hearing Steele rant like a religious extremist on one of his UA-cam videos about this frame using the worst combination of logical fallacies I've come across since a mid term, I came to watch your videos and have now ordered some AOS frames. Thanks Steele, and yay for science.
Good job sir!! Gemfan 4.9 inch props are my favourites they feel different to anything else on the market but they are a bit too durable at the hub and can bend the shafts in heavy concrete crashes..Zero prop wash and instant thrust is second to none.. Also the Ummagawd 4Plays have a unique feel to them, So much grip with that extra blade, but two blades take a whack almost every crash and they get mangled easily..
I been using Dal Cyclones 5x4x3 but they dont make them anymore. They are really close to HQ props original V1S which were very efficient freestyle props.
I've used Dal T5045C and the T5040C for some time now. I've found them relentlessly durable which is why I still use them. They don't like jet flame lighters though, not even for a split second when melting off fraying battery strap🙄! Bit disappointed that you didn't include the T5040C or one of its different pitched brothers and sisters.
Could you make a video about disc loading Vs prop efficiency? With the 5226 being a little further down the list I'm not sure what is better when having a slightly heavy 5". Greater disc according to the propsize Vs weight graph or better efficiency?
Great video as always! Waiting for you review on larger props. I fly planes/wings with quad props - they are cheap, well-balanced and easy to get. So far Gemfan Flash 6042-2 and 7042-2 seemed to be the best option for the application - bi-bladed, high pitch (probably high advance ratio?), feels like they are quite efficient as well. Would be interesting to see how they compare to other props (Emax Avan LR and Ethix K2 seems to be competitors in 6-inch category, for 7-inch much more options are available).
hq 5x4.3x3 are my favorites. also like the nazgul props. i find the nazguls to be a bit more durable. they bend but havent shattered yet. the hq like to explode or crack.
very good work, i did fly a large number of the props in the list and ended up sticking with the Gemfan 51499, they are more heavy but the higher pitch is leveling that one out. HQ and t-motor props are just too fragile and they only perform well in perfect conditions, and well freestyling is never in perfect conditions ;)
should get tongue depressors. or popsicle sticks to test durability. see how many it can break before the prop breaks... or break one and test change in vibration.
This is great, thank you very much, I will for sure take a deeper look at the spreadsheet. The torque and mech. prop columns are very appreciated, I wonder if chosing a typical 5" motor (instead of an oversized one) has had a big influence on net efficiencies. Particularly, I've been using GF hurricane 51466 and find them pretty durable, for 6" I prefer to take the DAL Fold (great "size" score) and pay the perfo penalty.
I'm glad you listened to comments and added a lot of Gemfans. However, you are still missing the popular HQ J37!!! And I'd also add the "older", but still for sale, Nazgul 5140 propellers.
Hey Chris could you do a request for 3D flying. Maybe look into optimal motor sizing, center of gravity with frame design, really any info we can scientifically find out about 3D. I’m actually a 3D pilot and I have a lot of info from my experiences. Everything from what’s currently working the best for me basically but I feel it could be made so much better. I’d be happy to share any and all that with you. I feel like 3D could be understood better if science was used to understand it. Unfortunately I’m no scientist but I know brilliant people like you are great in that department. Thanks ahead of time if you consider to look in to it.
My experience with Gemfan F4S is they must be made of taffy. They are so flimsy at higher speeds that you can hear them 'flap' or shape change. Just something I noticed right away.
From my experience I can definitely say that the HQ 5x4.3x3 V1S are far more durable than the Ethix P4. Tried the Ethix for a while and I was losing prop blades every other crash (literally an entire blade shearing right at the hub). This very rarely happens with the V1S, I have been flying them for almost 2 years now, awesome prop.
Thank you a lot for the extensive test.however there is need of another test which is about durability. The lighter the prop it's kinda safe to say that it will be less durable. Maybe a testing mechanism can be developed like props spinning at 2000rpm an object connected to a servo hits it . Maybe it will show the durability of the subject prop in some way
You turned the weight score formula at 5:49 upside down, you wrote Mavg/Mprop = score% the lower the better, but obviously, if particular prop will be heavier than an average prop, you'll get a value lower than 1.0. It will mean the heavier the prop the better the score, which is wrong.
@Chris Rosser I have had nothing but issues with Gemfan Hurricane 4023. Using them on Brother Hobby 2004 3150kv motors on 4s, any type of throttle punch, the props blow themselves apart. My last maiden did not end well with this setup. Am I doing something wrong? O_o I have a short vid I just posted from DVR.
Hi Chris, I am looking to build a fixed wing plane with quadcopter components (engine/prop) for future VTOL applications. Which prop would you suggest for such a project?
@Chris Rosser - I'm really late to the party here, but it would actually be interesting to shove all of this data through a somewhat defined multi-attribute utility theory derived optimization setup, and try to really nail down which are the 'Top 3 Props for XXX' application out of each, and then really try to run that against durability data, and see how that compares with the actual popularity of these.
Propeller color is vastly underrated, discount it at your serious peril! I pray you never need try spotting grey props in a tree (HQ 5x2.5x3). Color more so than durability, is the primary reason I stuck with watermelons so long!
Я думаю для вибрации нужно построить ряд Фурье. Зависимость амплитуды вибраций от частоты вращения пропелера. Провести анализ гармоник. Хотя в образовании гармоник очень много факторов таких как рама антенны и тд. и тп👍. Но можно попробовать посмотреть и на гармоники хотя мы их и так видим в log files ну а тут можно посмотреть вибрации мотора отдельно и мотора с разными пропелерами. В акустике так оценивают усилители и акустику👍
@@ChrisRosser In the aos site 5.1x2.5x3 is less efficient than 51466. There is something wrong. Not even the engine tests convince me. Can you share all the data on the engines like with the propellers? I am very interested in the amps consumed by the various engines and the efficiency at max throttle, Not just that at 350w.
Great information as always chris👌 Also just wanted to add as far as props that are the most resilient wise ? A rule of thumb...as i imagine you know anyway ? Always buy Clear/see through props as they are without a doubt the strongest propellers material wise that I definitely can support 👍 take care chris keep up the stella work Peace out Cjthedj✌... ...
I have a 2 step prop testing system. I buy them, then fly them. This is much more scientific. Thanks for all the data!
I would go with the Gemfan 5152
One thing to note, Gemfan's 5 digit naming is wonky and misleading. 51433 does not mean 4.33" pitch, I actually think it doesn't mean anything. It's a 3.5" pitch prop for some stupid reason probably only Gemfan knows. Same for 51466, 51477 etc
Really? Oh jeez. Well I guess that might explain why the pitch numbers didn't make sense to me. It's incorrectly listed on some retailers websites as well then.
oooooooooh my god. Thats rediculus i used to believe this to@@ChrisRosser
I have so far tried the HQ 5x4.3x3 V2S and they were very good, way better than the Ethix S5 I had been using before.
But I settled on the Ethix P3B Bi-Blade props that are actually mindblowingly good. I would have never expected the bi-blade to be that good despite them technically scoring on top.
Thank you for your great work!
Thank you, amazing job
Now with Gemfan and a Spreadsheet. Amazing! Love all of it :)
Looks like your initial choice for the AOS 5 quads was quite a good hit!
As I wrote under the last vid, not realizing you just posted a sequel: A dB (A) value would be really amazing in the future.
Hi Chris, you have became the new "You'll learn something today" for me (Bardwell, forgive me please, I love you too) and I really love your effort and the information you gave to the entire community, so I think you're in some way educating better the FPV community. I love your test, but I have a little question, I tested both gemfan hurricane 51433 and tmotor 5143s, so I remember your last video and the tmotor weren't coming out very well, but I have to say that the flight feeling is amazing compared to the hurricane 51433, since it looks like I can control better my quad in the air, more like, I can do much more what I think my quad should do. Now since this is about a feeling, under the filter of your tests how can I analitically explain what I "felt"? I'm curius to try new kind of prop when I will brake all my tmotors ahahaha, but I'm afraid about how I will feel it.
just curious. what prop are you using currently? (if any)
Exactly what I was looking for, thanks for all the excellent work you do man! No BS, no wild opinions, just solid data and analytics.
What a great outcome, thank you so much.
Next you need the tree limb survival test. Which ones shatter into pieces compared to those that take a hit and survive with little to almost no damage. As one who flies around the trees a lot and at high speed most of the time, branch encounters are pretty often. Especially those leafless ones hanging down that you don't see until right before you smack into them.
Hey Chris! Thanks for your work! Could you test Ethix P3 and HQ J37? They are my favorite props and they're missing 😱
Btw I'll give hq 5.1x2.5x3 a try 😊
Thank you Chris, very interesting. Too bad you couldn't test the Ethix P3 (3 blades) which are some of the most flown props, I would have liked to see how they perform according to your criteria.
i just bought those in bulk recently, so im curious as well.
I just ordered a bunch of different props after wachting this video and also added some P3s, so I would also be curious.
Yep curious on the 3 blade variety as well!
@@painy6588 any update on how the p3 stands up to the others?
...was knowing there is more to come from you :) thank u a lot Chris !!!
My pleasure!
Thanks Chris for putting this together, and thanks for the rapid reply yesterday! -BC
Great stuff Chris, much appreciated! Did you notice a correlation between efficiency and sound levels? Or was there a set of parameters that might provide a strong enough correlation to be useful?
Lower pitch, lighter props is usually less noisy, higher pitch heavier props is more noisy.
@@DoctorrMetal Not in my experience. Had really low pitch light 3inch props that needed so high rpms that the really screamed at every maneuver where the heavier higher pitch props where clearly more silent in most Situations
@@DoctorrMetal prop noise is much more complicated than pitch. The airfoil, tip design, distance from the frame arm, distance the tips come to the frame itself are just a few variables when it comes to noise.
@@classicshooter4849 agreed, overall prop design and use case rather than a simple variable or variables. I’d be interested in db level correlated to rpm and thrust.
0:43 The elephant up on the shelf is awesome 🐘
Also, that light cover on the ceiling is cool too 😎
Thanks man! My partner made the elephant, she is super crafty.
Chris big thx for your content, there is no easy way how ordinary customer like me for example :D can easily compare different products like props or motors before actually buying them and then not everyone has a test bench etc. This also pushed manufacturers to improve their products and so I think this content is extremely useful hence it may not be the most entertaining content in the UA-cam :D.
To get it as close to perfect as you can Chris….You are the man. The 4S props are just🫠😋🔥
Thank you for the test! Super interesting to read through the results!
I am mostly running the GEMFAN HURRICANE 51477-3 on my 5".
Happy to see it doesn't only feel very powerful but actually produces a lot of thrust.
Two things that stand out for me: it's ONE OF THE LOUDEST 5" props that I've tried and it tends to break off/lose entire blades in my typical crashes.
One might say it does rather burst than bend.
Is room temperature similar for each test? Could you perhaps do a test on how air temp(density) affects thrust and efficiency? Could you also try and test the moment of inertia of a prop, and the rotational energy required to spin it up to the RPM at which it produces 1kg. We can also just test the raw time it takes for each prop to spin up to 1kg of thrust. The integral of the thrust during the spin up might also be relevant.
Thank you, very very informative video - have you also planned to conduct studies about 10 - 17 inch propellers and their engines too ?
Your the best Mr. Rosser, just built my Source One V5 with dji vista! Running P3 + P4 on 2207 E-pro's, will try some of the props in this video!
Great job Chris, thanks for that! I'm a bit surprised that my daily driver prop Ethix P3 PB&J wasn't there...
Ya, I'd hoped to see them as well.
This is awesome Chris. Thanks for doing this!
I remember back in the day running 5 inch triblade bullnose props on 2204 motors. Oh how far we've come.
Wonderful work Chris! Awesome!
Thank you! Cheers!
Wow thanks Chris for the in-depth tests and spreadsheet! I find that props that look like glass (translucent) like GemFans 5152-3 snap when crashing but they seem to provide more predictable fast flight - and my HQProps V1S seem to absorb a crash and are more prone to bend so they seem to not have that thrust (because they are bendy?)...I like both props but my question is how would a props' material composition aid in flight characteristics or would it alter/enhance your test results? Thanks again!
Definitely interested in the larger 7 inch prop analysis...time here to go long range!!
Thanks a lot for the great video Chris!
I am flying HQ 5x4.3x3 v2, and find them rather durable. Broken one prop while flying strait into a tree branch. Have bent few other props, then straightened them with my hands and they are still flyable, though the level of vibration has increased.
Thanks for doing this tests for us... im just hobbiest not a professional... now i know wich to choose 🙂
Thank you.
Can you please test the DAL Prop 5x3 2Blade ?
Cheers
Nik
Thanks for these videos Chris. It's been really helpful because there are so many options out there it's hard to know which direction to go without a ton of trial and error. If you ever get a chance to review the lumenier gatebreakers pls post. It's JohnnyFPVs preferred props on his QAV-S. Thanks again!
No one ever shows TMotor props enough love, I love them
Yes, I used to run them and loved them some of my favorites, but that were the earlier one that broke pretty easy and so switched to the gemfan version, how is durability now?
@@ugpfpv361 I’ve only been using them for the past 2 years maybe, my first set of T5146’s I received in a QuadBox and fell in love with them, tho I’m not sure which version those may have been, or the current iteration for that matter. However, I’ve rarely had them snap on me tho, and they definitely tend to bend rather than break, in my experience at least. Not that it’s NEVER happened, but never more often than any other quality blades do.
Personal Preferences - DAL Folds, iFlight Nazgul, Ethix . Personal Hates - HQ (especially their 3") Durability - Good: DAL range (memory is good) , Poor: HQ range sneeze and they bend and don't come back) Worst: EMax (blade losses in flight, mostly on 3" though)
Ethix props made by HQ, no?
So how does the information about disc-loading play into this? I have a quite heavy AOS5 with GoPro Hero 7. So I chose the biggest Prop that I could fit onto the frame, being the Gemfan 5226, and when looking at the graph showing Prop-diameter vs. weight from your other video that seems to be a sensible choice (well, the AOS5.5 with 5.5" props would have been the sensible choice but things are now the way they are and I can't afford another new frame). The same prop is included in the data-sheet of this video, and when I compare it with other props it now does not seem to be the best choice anymore regarding efficiency and thrust. Would a smaller, more efficient 5.1" or 5" prop be better or is disc-loading just as important? I will try the 6236 from Gemfan next as I do think at this weight the extra thrust could be advantious.
Regarding the 51433 and 51466 from GemFan it has to be noted that the manufacturer did not stick to the standard naming of the props. On the Gemfan webpage die 51433, as an example, is stated to have a 3.5" Pitch, not a 4.33". Just a recommendation to correct that data-point in the spreadsheet.
Thank you for all the hard work :) Lots of good information in all your videos. So much so, that it actually makes it harder by now to chose the perfect prop xD haha
I’ve loved the Ethix S4’s for a long time now and was a bit surprised not to see them higher in the rankings. They have been the best balance between performance and durability that I’ve found. Sure they nick and dent a bit, but I suspect that is not avoidable in any prop. When they deform they are easy to bend back, and they don’t then roast your motor or ESC.
Admittedly though, I haven’t tried many others because once I switched to S4 I was pretty much sold. Guess I’m gonna have to go spend some more money… lol
Also- THANK YOU FOR ALL YOUR HARD WORK, CHRIS!
Increased durability is one of the balance factors of what makes some props perform worse, whereas the best performing props might strike a tree and be unusable after no amount of rebending.
The Gemfan sbang props are very durable. They can be super bent up and still fly great. When I have crashed into trees with them they would chop off skinny leafy branches.
awesome work! thnx!
Thanks Chris. Great video and spreadsheet 👊🏻👊🏻👊🏻
Awesome video, can't fault the methodology. Would be absolutely amazing if you repeated the test with 6" and 7" props on the market, I'm very curious to see the thrust and efficiency characteristics of quads bigger than 5", there is really not much reliable data online!
Ive got two 5” quads and i use the Nazgul on one and the HQV2S on the other. The Nazgul props are seemingly indestructible and can take an absolute beating, but when they break its aggressively. The V2S props are absolutely amazing performers but they are very thin blades and don’t like to touch anything. That being said, the V2S very rarely come apart and will almost always be in good enough condition to fly it back after a crash. Do not purchase the Gemfan props that have a galaxy pattern for freestyle as they will legitimately shatter like glass when they encounter anything but clean air.
Wonderful! Ever think of testing 7 inch ones?
For a durability test, colliding the prop with a 3D printed object meant to break, then evaluating the change in vibration at a set RPM might be a consistent test. Could use a servo to bring in the object in after the optical sensor for measuring the RPM triggers while a collision flag is active. Would also need to mark where the prop is mounted to keep the blades aligned from prop to prop.
Great work as usual. I have a request: could you, once and for all, use science to determine the airspeed of an unleaden Swallow - both varieties? A spreadsheet with the results would be highly useful to have. I can lend you my unexpurgated version of "Olsen's Standard Book of British Birds" should you need it for reference. Be a great conversation piece. . .
I haven't seen a Monty Python film in so long. Time to go through my VHS collection
Good job Chris, thanx!
I hope you would do the same test for 7" as they are harder to tune and maybe have a wider range of uses than the 5" 🙂
Great video, can you test 6 & 7 inch propeller? Thanks
Thanks for all the work! Will be interesting to see, if working from the data, how the props with similar numbers from different manufacturers will feel in real life
No gatebreakers or butter cutters???
Thank you for making this kind of videos!
Amazing!!!
You are amazing :)
Thanks a lot for all this test... It take a lot a time. And thanks to share the spreadsheet!!!
If we want some more, is it possible to send you some props? Or fill a request form :').
Sure, feel free to drop me an email and I'll see what I can do. If it's a 5" prop I'm happy to test it an add it to the sheet.
@@ChrisRosser Its the two others dal cyclone 5143.5 and 5146.5 (but I have already talk about it in discord chat :p )
Please test with 7 and 3 inch props as well.
So you missed two craaazy popular props!! HQ R38 and ETHIX P3 PBJ
Your expression and the green props goes well together in the thumbnail pic 😂😂😂
Thanks, no photoshop used. I just had my partner pour a huge box of props on ma face!
Great video, and amazing analysis!
I've used the Nepal N1, and they feel quite smooth and controlled, but durability is low. I've gone through them all realy quickly. The Hurricanes are proving far more durable. Also used the Windancers 5043 for a while and they work really well.
Thanks. Good to see a comparison between the GF 51466 and 51466 v2. I also run GF 5152 if you are looking for more props to test.
The Avan Flow props broke the most out of all my props. HQ 7045 x2 1vS broke almost as much as the Avan's. The GF 51466 so far have been the most durable. I only have props 5" and above breaking without being crashed.
Thanks for these videos 👍
Gemfan - Hulkies • 5055 (Gen. 1s/V1s, I know for sure were beefy. I mean, they all really are. But the Jen ones were the ones that I knew would take the hit. As opposed to [I believe] the Gen. 2s/V2s. Maybe it was V3s/Gen. 3s)
After hearing Steele rant like a religious extremist on one of his UA-cam videos about this frame using the worst combination of logical fallacies I've come across since a mid term, I came to watch your videos and have now ordered some AOS frames. Thanks Steele, and yay for science.
Good job sir!!
Gemfan 4.9 inch props are my favourites they feel different to anything else on the market but they are a bit too durable at the hub and can bend the shafts in heavy concrete crashes..Zero prop wash and instant thrust is second to none..
Also the Ummagawd 4Plays have a unique feel to them, So much grip with that extra blade, but two blades take a whack almost every crash and they get mangled easily..
I been using Dal Cyclones 5x4x3 but they dont make them anymore. They are really close to HQ props original V1S which were very efficient freestyle props.
I fly the HQ 5.1x2.5x3 and they're a bit more fragile than the average prop, but they are quite cheap if you buy the big pack.
I've used Dal T5045C and the T5040C for some time now. I've found them relentlessly durable which is why I still use them. They don't like jet flame lighters though, not even for a split second when melting off fraying battery strap🙄! Bit disappointed that you didn't include the T5040C or one of its different pitched brothers and sisters.
Thank you Chris, this is great information, love a good spreadsheet? 😊
great data, thank you!
Thank you!
Could you make a video about disc loading Vs prop efficiency? With the 5226 being a little further down the list I'm not sure what is better when having a slightly heavy 5". Greater disc according to the propsize Vs weight graph or better efficiency?
Great video as always! Waiting for you review on larger props. I fly planes/wings with quad props - they are cheap, well-balanced and easy to get. So far Gemfan Flash 6042-2 and 7042-2 seemed to be the best option for the application - bi-bladed, high pitch (probably high advance ratio?), feels like they are quite efficient as well. Would be interesting to see how they compare to other props (Emax Avan LR and Ethix K2 seems to be competitors in 6-inch category, for 7-inch much more options are available).
hq 5x4.3x3 are my favorites. also like the nazgul props. i find the nazguls to be a bit more durable. they bend but havent shattered yet. the hq like to explode or crack.
very good work, i did fly a large number of the props in the list and ended up sticking with the Gemfan 51499, they are more heavy but the higher pitch is leveling that one out.
HQ and t-motor props are just too fragile and they only perform well in perfect conditions, and well freestyling is never in perfect conditions ;)
should get tongue depressors. or popsicle sticks to test durability.
see how many it can break before the prop breaks... or break one and test change in vibration.
This is great, thank you very much, I will for sure take a deeper look at the spreadsheet. The torque and mech. prop columns are very appreciated, I wonder if chosing a typical 5" motor (instead of an oversized one) has had a big influence on net efficiencies. Particularly, I've been using GF hurricane 51466 and find them pretty durable, for 6" I prefer to take the DAL Fold (great "size" score) and pay the perfo penalty.
I'm glad you listened to comments and added a lot of Gemfans. However, you are still missing the popular HQ J37!!! And I'd also add the "older", but still for sale, Nazgul 5140 propellers.
GREAT STUFF
Awesome work....😍
Would you do this for 7 inch?!
My test is does the prop snap when I take a large 2806 wound at around 3000kv with 6s batteries and a 60a stack full throttle 5 inch
Amazing work.
Amazing video!
Hey Chris could you do a request for 3D flying. Maybe look into optimal motor sizing, center of gravity with frame design, really any info we can scientifically find out about 3D. I’m actually a 3D pilot and I have a lot of info from my experiences. Everything from what’s currently working the best for me basically but I feel it could be made so much better. I’d be happy to share any and all that with you. I feel like 3D could be understood better if science was used to understand it. Unfortunately I’m no scientist but I know brilliant people like you are great in that department. Thanks ahead of time if you consider to look in to it.
Also an error in the spreadsheet: Gemfan Vannystyle are sold as 3.6 pitch, not 4.66.
Perhaps the toroidal propellor can be a game-changer. One can 3D print one for own use.
My experience with Gemfan F4S is they must be made of taffy. They are so flimsy at higher speeds that you can hear them 'flap' or shape change. Just something I noticed right away.
From my experience I can definitely say that the HQ 5x4.3x3 V1S are far more durable than the Ethix P4. Tried the Ethix for a while and I was losing prop blades every other crash (literally an entire blade shearing right at the hub). This very rarely happens with the V1S, I have been flying them for almost 2 years now, awesome prop.
Thank you a lot for the extensive test.however there is need of another test which is about durability. The lighter the prop it's kinda safe to say that it will be less durable. Maybe a testing mechanism can be developed like props spinning at 2000rpm an object connected to a servo hits it . Maybe it will show the durability of the subject prop in some way
I find HQ props (Ethix, as well) to be the most durable. I don't even use them anymore but can't deny how durable they were.
You turned the weight score formula at 5:49 upside down, you wrote Mavg/Mprop = score% the lower the better, but obviously, if particular prop will be heavier than an average prop, you'll get a value lower than 1.0. It will mean the heavier the prop the better the score, which is wrong.
Ah, I flipped it over so that for every score bigger is better. Same as for thrust and efficiency. So the lightest prop should get the highest score.
Love all this data...
Maybe noise data?
quietest prop SPL at 1m while producing 1kg thrust
maybe again at 250g
@Chris Rosser I have had nothing but issues with Gemfan Hurricane 4023. Using them on Brother Hobby 2004 3150kv motors on 4s, any type of throttle punch, the props blow themselves apart. My last maiden did not end well with this setup. Am I doing something wrong? O_o I have a short vid I just posted from DVR.
Hi Chris, I am looking to build a fixed wing plane with quadcopter components (engine/prop) for future VTOL applications. Which prop would you suggest for such a project?
@Chris Rosser - I'm really late to the party here, but it would actually be interesting to shove all of this data through a somewhat defined multi-attribute utility theory derived optimization setup, and try to really nail down which are the 'Top 3 Props for XXX' application out of each, and then really try to run that against durability data, and see how that compares with the actual popularity of these.
Gemfan 51433 for life 💪🏼
You forgot the decibel sound :(
Can you run 4inch prop on 5 inch quad?
Propeller color is vastly underrated, discount it at your serious peril! I pray you never need try spotting grey props in a tree (HQ 5x2.5x3). Color more so than durability, is the primary reason I stuck with watermelons so long!
Я думаю для вибрации нужно построить ряд Фурье. Зависимость амплитуды вибраций от частоты вращения пропелера. Провести анализ гармоник. Хотя в образовании гармоник очень много факторов таких как рама антенны и тд. и тп👍. Но можно попробовать посмотреть и на гармоники хотя мы их и так видим в log files ну а тут можно посмотреть вибрации мотора отдельно и мотора с разными пропелерами. В акустике так оценивают усилители и акустику👍
How are the vannystle 5136-3 props ? I'm struggling with vibration on a 5 inch and wondering if they could be the cause
get the gemfan f4s instead
GREAT JOB !
But...
GEMFAN MCK V2 are missing...
😭😭😭😭😭😭
Gemfan 51466 pitch 3.6 inch
Gemfan 4 Blades for the win.
Why is this Google driver data completely different from that of the aos site?
Hmm, perhaps there is a broken link. The AOS labs data is driven off the same google spreadsheet linked on the patreon.
@@ChrisRosser In the aos site 5.1x2.5x3 is less efficient than 51466. There is something wrong.
Not even the engine tests convince me. Can you share all the data on the engines like with the propellers? I am very interested in the amps consumed by the various engines and the efficiency at max throttle, Not just that at 350w.
Can somebody please tell me the best sized motor for a 1045 prop, thanks.
Great information as always chris👌 Also just wanted to add as far as props that are the most resilient wise ? A rule of thumb...as i imagine you know anyway ? Always buy Clear/see through props as they are without a doubt the strongest propellers material wise that I definitely can support 👍 take care chris keep up the stella work Peace out Cjthedj✌... ...