I'm just here to express my glee at the thumbnail. Practically, 5.5" for carrying slightly chonky stuff is pretty spot on, and I'll still argue that most people would be best served by running an AOS5.5 over most any other option.
Hi. I tryed 2.2 pitch on my AOS 5.5 and 5.0. I like the smooth and flight time but the motors ir very hot( on 5.0 have some desync). When I changed the props to 3.5 pitch the motors worked at low temperature. I’m using rcinpower 2306 smoox on two builds
Thanks Chris... 2.2... I am a fan of lower pitch props because of the control... thank you for explaining the difference between lower/higher pitch props...
You did it. I did comment on prop design analysis. Thank youu ! Awesome video. Next up, please do a video on latency analysis on different module of radio :)
this is what i need a simple straightforward suggestion like this help me decide the pitch of props ,,,not like the others stars who just only makes me thinking and cannot make up my decision
I use those 5.5x3.5x3 on my midrange rig and yeah they are prone to propwash, they are efficient at carrying the weight of a gopro and some extra bat. I would add they are also durable and trustworthy. I will look for the 5.5x2.2x3 to try out.
how do you feel about even steeper props, such as the HQ 5.5x4x3 as a long range/ Cinematic carrier for the AOS 5.5 ? (with a throttle cap) Shouldnt the steeper angle of attack bring lower rpm and thus higher efficiency? I am building a AOS 5.5 atm. and am looking for two prop options, to use the rig for Freestyle (2.2) as well as Cinematic LongRange with a Hero 7 ( 3.5 or 4) What are your thougts?
@@userunknown2771 make sure you have enough motor to manage the prop and you should be fine. 2408 has a good reputation in the 6" community, 2506(which is a smaller stator) is the new big motor for 5" quads may handle 5.5" well . My propwash problems may partially be related to the smallish motors i have managing the prop. i dont freestyle my mid range rig I want to be able to trust it 100% when i send it out, freestyle rigs that get rolled in the grass and crashed through branches cant be considered 100% trustworthy.
This is exciting, Chris! I flew 5.5" props for quite a while. I started with the DAL 5544 props, but they got unbalanced and jello-y if you just clipped a leaf. Then I flew HQ 5.5 x 4-point-something props for quite a while. I wound up backing off to 5" props, and I fly S3 and P3 props now. I still cut all my 5" frames with enough room for 6" props. About a year ago, HQ started selling some 5.5x3.5 props, and they're really not bad. If you swapped them in place of my Ethix props without telling me, I'm not certain I'd notice right away. You've got me excited to order some 5.5x2.2 props, and I haven't even watched your video yet! I fly S3/P3 props, because they make altitude control so much easier, and it doesn't hurt that light props handle propwash better. It makes me look like a good pilot when the props help me come out of a tight S-turn in a nice line that hugs close to the ground and just stays there. I bet 5.5x2.2 props does a good job of blending the things I like about a 5.5x3.5 with the things I like about my 5.1x3.1 props. Next time I order parts, a few bags of these are going into my cart for sure! Thanks Chris!
Are you planning a 5.5 v2 frame with 25x25mm mounting holes for the fat shart/walk snail avatar system? I'd like to buy one right now but would really like that mounting. Would it be hard to add to the CNC files?
Does the higher Pitch make the Quad more annoying? Perceived louder? I'm not sure I'm hearing it louder in the mix. HZ and DB vs Human hearing response.
I agree with the low pitch component of your prop argument, however I was bummed how you didn't touch on the coupled design limitations of what most low pitch, light blade weight props lack which is the stiffness and rigidity that thicker props with more camber have.
is there a Number we can assign to just the amount of torque required to accelerate a particular prop? X prop need Y Torque to accelerate at Z rate... since weight distribution is more important than actual weight right? weight in the Hub, verse weight in the tip... Seems this is getting lumped with pitch and thrust...
Flying the same way both props got a similar flight time. The 5.5x2.2 may extend flight time by reducing the current draw at high throttle but also produces less thrust.
Did you try dynamic idle? It is great for inverted yaw lovers, and also allow u to set the motor low rpm to be greater than avoid stall yet allow the PID to get lower rpm when needed
Hi Chris, love your videos, love your quad designs. I'm about to build the AOS5.5 and am rounding up parts while waiting for the frame. Can you recommend motors for it? I've watched your video on motor choice and 2306's seem too small. A Brotherhobby 2407 seems a bit much, at the same time. Matt Shonan used FPVCycle 2505 and seems to have had good results but I'm not sure with that motor. I did your math, for that motor, and it comes up a little short. Do you have any suggestions?
Would help alot if you actually showed us your tunes, presets and settings so newbs like me that got this AOS 5.5 v2 can actually tune it. Mine is still giddering when there is wind or at random times . Almost like a shake in the system or camera. So i dont trust it.. i only tried supafly 5" and karate 5" presets on it. But, it flies pretty good.. but that giddering and i could be alot more precision and speed.. I've got the props u recommend here with the Xing 2 2307 1750kw 6s
If this new prop produces less high end thrust and runs faster, do you still recommend the 2208 1800kv motor, or would a 2207 running faster be better? I think a prop somewhere between the two would be best
Those props look great! Can't wait to try them on my AOS 5.5! That ~50hz spike looks pretty high on the 5.5x3.5x3. Were both props pulling a gopro for the flight logs?
I want to say that having a definitive answer about these two props can only be had whilst defining your elevation. I feel like , at sea level, that big of a pitch decrease did not make the quad fly better at all.
@@ChrisRosser I love the 3.5 inch pitch props on my AOS 5.5 it surprised me to hear you say that the 2" pitch props were your favorite. I went and bought them to try , but I felt I wasn't getting as punchy of a feeling as I like.
Currently the frames are sold through cncdrones.com and they do international shipping. I'm working on more availability internationally. Get in touch with your local shop and ask them to stock the frames you want!
Interesting! Always thought lower pitch props will result in bad response and handling. You mentioned dterm lowpass filters are best reserved for the 100 to 200hz range, why is that? And does this mean gyro lowpass filters would be better for higher frequency noises?
Frequencies lower than 100Hz are typically real movements of the quad due to aerodynamic forces not vibration. Frequencies higher than 100Hz are vibrational noise. A D term low pass really starts to attenuate at 2x the cutoff so you want minimal noise in the 100-200Hz range. Gyro low pass filters are a poor way to filter noise and I don't use them. If your build is clean you should be able to switch them off. One exception, if you are running 4k PID loop a gyro low pass at 1000Hz can reduce aliasing noise.
can you make an over view on 4 blade props? o think the grip on them is amazing but has gone over looked. only 5" quad blades but 5.5 and 6 would benefit alot from 4 blades adding more grip to the speed of these larger ones
you would really want to step up to a larger motor to handle a 4 blade 5.5-6" prop... 2806 territory.... would be interesting to see a 4" 4 blade prop though as you could probably get away with carrying a gopro on it and just use 5" motors.... 4 blade have alot slower top end so it would be awesome for tighter proxy freestyle
@@longboarderebright yeah those 2506's are what i have on my 6", currently have 5.2" props waiting on 5.5s... i agree 2806's are a little heavy for a 6" but i feel you wouldnt get the response on a 2506 with a 4 blade prop, it would just be too heavy... smooth freestyle ya but it wont handle propwash good
@@longboarderebright I quite enjoy that 4.8 4 blade.... I dont think ive tried em with a gopro so i should give em another go as i think i got a pair left
Great video again. I tryed both these props on my AOS 5.5 build. I did like the smoothed out low end of the 2.2 but really like the punch of the 3.5. It was a pretty windy day so i assume that made the test very diffrent then no wind so i need to try it again but im leaning twards the 3.5. Also everything you said was spot on in regards to performance of each prop. Thank you again. Your videos are super helpful to thoses of us who are newbies.
@@JC-qy6cx i do not but my quad is still on stock betaflight 4.1 settings and was built using all of the components chris sugests in his “perfect 5.5” build. Im still too new to fpv to mess with pid tunes.
Avoiding any moves is not an option.....The point is to be able to carry a GoPro, and show off ALL the moves, on the 5.5 inch platform. Also , I couldn't find this available anywhere in the US, and it was 20 dollars shipping from HQ. I am in the process of building an AOS 5.5 right now, all I have at this point are Gemfan 5.5x5.2x3 lol. I can also fly 5.1s until I can get a better 5.5.
I completely agree. You don't want to be limited by propwash! As for availability, these are very new. I would advise you to ask your local retailer to stock some.
Hi Chris, I ordered the AOS 5.5 frame a week ago, and this video concerned me. It concerned me because I want to fly freestyle and thought the AOS 5.5 could do what 5”s could but better. When I heard you avoid doing hard moves like split Ss and turning and going low under things with the other props, I wonder if I chose the right frame. The shallow props have a much too high RPM for me - just sounds far too high. I’m not advocating his choice of where to fly, but my friend flies 5” with a GP 10, and this is how his Apex flies. Will the AOS 5.5 fly this well (or better) with the higher angled props (not that there’s much choice at 5.5”)? ruclips.net/video/SXtj4N2eDcg/видео.html
Hi Steve, If you're worried about 5.5" props you can always run 5" props and compare them on the AOS 5.5. Shallow props are better for propwash and low throttle control and responsiveness, that's why I prefer them for freestyle. They do spin faster but I got used to the different sound in a couple of packs.
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
just ordered my AOS 5.5 frame and some hq 5.5x2.2x3 props, can't wait!
I'm just here to express my glee at the thumbnail.
Practically, 5.5" for carrying slightly chonky stuff is pretty spot on, and I'll still argue that most people would be best served by running an AOS5.5 over most any other option.
Hi. I tryed 2.2 pitch on my AOS 5.5 and 5.0. I like the smooth and flight time but the motors ir very hot( on 5.0 have some desync). When I changed the props to 3.5 pitch the motors worked at low temperature. I’m using rcinpower 2306 smoox on two builds
Thanks Chris... 2.2... I am a fan of lower pitch props because of the control... thank you for explaining the difference between lower/higher pitch props...
You did it. I did comment on prop design analysis. Thank youu ! Awesome video. Next up, please do a video on latency analysis on different module of radio :)
On the list already 👍
have you ever try gemfan 5552! those on big stator motor are crazy sweet!
I'm not a fan of steep pitch props at all. They don't suit my flying style at all, sorry!
this is what i need a simple straightforward suggestion like this help me decide the pitch of props ,,,not like the others stars who just only makes me thinking and cannot make up my decision
I'm just trying to wrap my head around all and it's just amazing me how just a little bit of difference in these props make that much of a difference.
It's a huge deal. The 5.5x2.2x3 are wonderful props for freestyle with a GoPro Hero.
Yeah it is crazy. Also having a good center of mass i think is another very common overlook with some pilots.
@@ChrisRosser 5.5? That would require a different frame or longer arms or something
@@MrSabram07 I have a 5.5 inch frame the AOS 5.5 which is designed for 5.5" props and ideal for carrying a heavier GoPro (Hero 8, 9,10)
@@ChrisRosser maybe my next build
I’m loving the Gemfan 5130. I run these on the Apex, 2207 1800kv, and GoPro hero 8
For a Hero 8 I would definitely consider trying a 5.5" prop. The difference is quite noticeable how the larger prop better handles the extra weight.
Fpv cycle imperials are great for carrying gopro. I bet they would go great on that frame
Yes they are big motors which are well suited to larger props like 5.5"
I use those 5.5x3.5x3 on my midrange rig and yeah they are prone to propwash, they are efficient at carrying the weight of a gopro and some extra bat. I would add they are also durable and trustworthy. I will look for the 5.5x2.2x3 to try out.
If you have a similar style to me I think you may prefer them over the 3.5s.
how do you feel about even steeper props, such as the HQ 5.5x4x3 as a long range/ Cinematic carrier for the AOS 5.5 ? (with a throttle cap)
Shouldnt the steeper angle of attack bring lower rpm and thus higher efficiency?
I am building a AOS 5.5 atm. and am looking for two prop options, to use the rig for Freestyle (2.2) as well as Cinematic LongRange with a Hero 7 ( 3.5 or 4)
What are your thougts?
@@userunknown2771 make sure you have enough motor to manage the prop and you should be fine. 2408 has a good reputation in the 6" community, 2506(which is a smaller stator) is the new big motor for 5" quads may handle 5.5" well . My propwash problems may partially be related to the smallish motors i have managing the prop.
i dont freestyle my mid range rig I want to be able to trust it 100% when i send it out, freestyle rigs that get rolled in the grass and crashed through branches cant be considered 100% trustworthy.
defiantly looks cleaner in the graphs, but are we closer to the 450mph tip speed limit more of the time?
does that mean less dynamic range?
I think the 2.2s get much closer to 450mph tip speed than the 3.5s. The battery sag on the 3.5s is significant.
Absolutely and less low end throttle response. Flying is about a lot more than bb logs.
Prop bench test? I know the prop isn’t moving through air, but the numbers would be good for comparing props, thrust, watts, rpm, sound…
I'm working on getting hold of a test stand for props.
Would this props also work on a 6" Frame? I use 5552 Props now
Yes, and they'll likely be very smooth and propwash tolerant.
@@ChrisRosser ok, I will try them. Thanks.
Can you do a video on how altitude factors I to all this? I fly in Colorado, does all of this still apply to me?
Great suggestion. I'll make a note of it.
This is exciting, Chris! I flew 5.5" props for quite a while. I started with the DAL 5544 props, but they got unbalanced and jello-y if you just clipped a leaf. Then I flew HQ 5.5 x 4-point-something props for quite a while. I wound up backing off to 5" props, and I fly S3 and P3 props now.
I still cut all my 5" frames with enough room for 6" props. About a year ago, HQ started selling some 5.5x3.5 props, and they're really not bad. If you swapped them in place of my Ethix props without telling me, I'm not certain I'd notice right away.
You've got me excited to order some 5.5x2.2 props, and I haven't even watched your video yet! I fly S3/P3 props, because they make altitude control so much easier, and it doesn't hurt that light props handle propwash better. It makes me look like a good pilot when the props help me come out of a tight S-turn in a nice line that hugs close to the ground and just stays there.
I bet 5.5x2.2 props does a good job of blending the things I like about a 5.5x3.5 with the things I like about my 5.1x3.1 props. Next time I order parts, a few bags of these are going into my cart for sure! Thanks Chris!
These 5.5x2.2s feel like the Ethix S3s but for 5.5"
Are you planning a 5.5 v2 frame with 25x25mm mounting holes for the fat shart/walk snail avatar system? I'd like to buy one right now but would really like that mounting. Would it be hard to add to the CNC files?
Both the AOS 5 V2 and 5.5 V2 have 25.5mm mounting in all three stack positions.
Does the higher Pitch make the Quad more annoying?
Perceived louder? I'm not sure I'm hearing it louder in the mix.
HZ and DB vs Human hearing response.
I actually really like the sound. It's closer to a 5" sound and although more piercing I don't think its any louder.
I agree with the low pitch component of your prop argument, however I was bummed how you didn't touch on the coupled design limitations of what most low pitch, light blade weight props lack which is the stiffness and rigidity that thicker props with more camber have.
I'm hoping to do some high speed footage of props to show elasticity. What do you see as being the tradeoff with more flexible props?
is there a Number we can assign to just the amount of torque required to accelerate a particular prop?
X prop need Y Torque to accelerate at Z rate...
since weight distribution is more important than actual weight right?
weight in the Hub, verse weight in the tip...
Seems this is getting lumped with pitch and thrust...
Yes, this is called Moment of Inertia or Rotational Inertia.
Chris, what was the flight time between props? what size battery were you using?
Flying the same way both props got a similar flight time. The 5.5x2.2 may extend flight time by reducing the current draw at high throttle but also produces less thrust.
Did you try dynamic idle?
It is great for inverted yaw lovers, and also allow u to set the motor low rpm to be greater than avoid stall yet allow the PID to get lower rpm when needed
Always. I really like the feature.
Another great video! Mine are on their way direct from HQProp... Do you know of any resellers that have these in stock?
Hi Chris, love your videos, love your quad designs. I'm about to build the AOS5.5 and am rounding up parts while waiting for the frame. Can you recommend motors for it? I've watched your video on motor choice and 2306's seem too small. A Brotherhobby 2407 seems a bit much, at the same time. Matt Shonan used FPVCycle 2505 and seems to have had good results but I'm not sure with that motor. I did your math, for that motor, and it comes up a little short. Do you have any suggestions?
You can find motor recommendations on my discord server! 2208 size for 5.5" props works well
This video earn my like just i saw the thumbnail 😀 content is also great.
When would you be showing the resonance analysis of the AOS Falcon 7?
I'll check with Conrad, as he is the designer I wouldn't want to publish any confidential information of his without consent.
Would help alot if you actually showed us your tunes, presets and settings so newbs like me that got this AOS 5.5 v2 can actually tune it. Mine is still giddering when there is wind or at random times . Almost like a shake in the system or camera. So i dont trust it.. i only tried supafly 5" and karate 5" presets on it. But, it flies pretty good.. but that giddering and i could be alot more precision and speed.. I've got the props u recommend here with the Xing 2 2307 1750kw 6s
If this new prop produces less high end thrust and runs faster, do you still recommend the 2208 1800kv motor, or would a 2207 running faster be better? I think a prop somewhere between the two would be best
2207 is probably enough. I used the 2208 for a heavier prop initially before the 5.5x2.2x3 was available.
@@ChrisRosser I have some 2208 2300kv motors lying around. Would these props be good on that setup on 4s?
@@MrDirrrty Yes absolutely!
which motors are you running on the 5.5 there?
Xing 2208 1800KV
But what if we grind our props down to a bloody stump, get them all bent up and ish, that extra prop volume comes in handy 🙂
What's you opinion regarding props with higher blade count (6 blade, 8 blade)? Why use them or why to avoid them?
Those props look great! Can't wait to try them on my AOS 5.5! That ~50hz spike looks pretty high on the 5.5x3.5x3. Were both props pulling a gopro for the flight logs?
Yes they were. That 50Hz spike was me really trying to bring out osciallation and propwash. It doesn't really appear in normal flying.
@@ChrisRosser appreciate the info! Makes total sense. I'm having a 50hz vibration issue on one of my other quads so noise that low triggers me
I want to say that having a definitive answer about these two props can only be had whilst defining your elevation. I feel like , at sea level, that big of a pitch decrease did not make the quad fly better at all.
Very true! I fly at sea level.
@@ChrisRosser I love the 3.5 inch pitch props on my AOS 5.5 it surprised me to hear you say that the 2" pitch props were your favorite. I went and bought them to try , but I felt I wasn't getting as punchy of a feeling as I like.
Cant wait for these props. Im a huge low pitch fan but i never thought we'd get any 5.5's in low enough pitch to enjoy
Get in touch with your local shop and ask them to stock some!
What about motors for a 5.5? Same ones I would use on a 5? I have 2306 1950KV at the moment.
I would suggest BIG motors 2208, 2506 etc. You need the torque to swing a larger prop.
im from Sri Lanka,,are u shipping ur frame to our country??how can I buy it
Currently the frames are sold through cncdrones.com and they do international shipping. I'm working on more availability internationally. Get in touch with your local shop and ask them to stock the frames you want!
Interesting, but I assume this analysis only applies to 6s ? As battery and KV / rpm were not clearly identified
I think this should be equally valid for 6S and 4S.
Interesting! Always thought lower pitch props will result in bad response and handling. You mentioned dterm lowpass filters are best reserved for the 100 to 200hz range, why is that? And does this mean gyro lowpass filters would be better for higher frequency noises?
Frequencies lower than 100Hz are typically real movements of the quad due to aerodynamic forces not vibration. Frequencies higher than 100Hz are vibrational noise. A D term low pass really starts to attenuate at 2x the cutoff so you want minimal noise in the 100-200Hz range. Gyro low pass filters are a poor way to filter noise and I don't use them. If your build is clean you should be able to switch them off. One exception, if you are running 4k PID loop a gyro low pass at 1000Hz can reduce aliasing noise.
can you make an over view on 4 blade props? o think the grip on them is amazing but has gone over looked. only 5" quad blades but 5.5 and 6 would benefit alot from 4 blades adding more grip to the speed of these larger ones
you would really want to step up to a larger motor to handle a 4 blade 5.5-6" prop... 2806 territory.... would be interesting to see a 4" 4 blade prop though as you could probably get away with carrying a gopro on it and just use 5" motors.... 4 blade have alot slower top end so it would be awesome for tighter proxy freestyle
@@badfourlife 2506 xings are my next go to fpr 5.5 and 6" 2806.5 is pretty heavy
@@badfourlife hq has a 4.8 4 blade thats ultra quiet and smooth/grippy/with a good feeling speed
@@longboarderebright yeah those 2506's are what i have on my 6", currently have 5.2" props waiting on 5.5s... i agree 2806's are a little heavy for a 6" but i feel you wouldnt get the response on a 2506 with a 4 blade prop, it would just be too heavy... smooth freestyle ya but it wont handle propwash good
@@longboarderebright I quite enjoy that 4.8 4 blade.... I dont think ive tried em with a gopro so i should give em another go as i think i got a pair left
Great video again. I tryed both these props on my AOS 5.5 build. I did like the smoothed out low end of the 2.2 but really like the punch of the 3.5. It was a pretty windy day so i assume that made the test very diffrent then no wind so i need to try it again but im leaning twards the 3.5. Also everything you said was spot on in regards to performance of each prop.
Thank you again. Your videos are super helpful to thoses of us who are newbies.
Thanks for the kind comment. Happy to hear my analysis helped you choose.
Do you happen to have a cli dump of your settings? I'm having some issues with my quad and want to see if it's a tuning error.
@@JC-qy6cx i do not but my quad is still on stock betaflight 4.1 settings and was built using all of the components chris sugests in his “perfect 5.5” build. Im still too new to fpv to mess with pid tunes.
We need a aos cinelifter frame 😆
I'm working on one. But its quite a big project!
@@ChrisRosser nice
Avoiding any moves is not an option.....The point is to be able to carry a GoPro, and show off ALL the moves, on the 5.5 inch platform. Also , I couldn't find this available anywhere in the US, and it was 20 dollars shipping from HQ. I am in the process of building an AOS 5.5 right now, all I have at this point are Gemfan 5.5x5.2x3 lol. I can also fly 5.1s until I can get a better 5.5.
I completely agree. You don't want to be limited by propwash! As for availability, these are very new. I would advise you to ask your local retailer to stock some.
@@ChrisRosser have you tried the gemfan 5552?
@@skyweaver3199 I haven't tried them. They look like very steep pitch props which I'm not usually a fan of as they don't suit my style.
I need to break 2 of the 3 AOS5's I have before I switch to the 5.5....you will probably have a new version by the time that happens 😆
There will be a V2 next year sometime 😁
Lol like the snegel reference
Hi Chris, I ordered the AOS 5.5 frame a week ago, and this video concerned me. It concerned me because I want to fly freestyle and thought the AOS 5.5 could do what 5”s could but better. When I heard you avoid doing hard moves like split Ss and turning and going low under things with the other props, I wonder if I chose the right frame. The shallow props have a much too high RPM for me - just sounds far too high. I’m not advocating his choice of where to fly, but my friend flies 5” with a GP 10, and this is how his Apex flies. Will the AOS 5.5 fly this well (or better) with the higher angled props (not that there’s much choice at 5.5”)? ruclips.net/video/SXtj4N2eDcg/видео.html
Hi Steve, If you're worried about 5.5" props you can always run 5" props and compare them on the AOS 5.5. Shallow props are better for propwash and low throttle control and responsiveness, that's why I prefer them for freestyle. They do spin faster but I got used to the different sound in a couple of packs.
ans they called me crazy for running 5.5 and 4" almost a year ago
As soon as a reviewer states THIS IS THE BEST , theres none in stock any where except the occasional "Only 1 Left"
It's very true. But it also pushes manufacturers to make more of that product in the next batch!
5.5 ftw
Johnny Azures the best
Aren't they 4.8"? The benefit of the 5.5 is that the larger diameter carries heavier action cameras effortlessly. Perfect for a hero 8 or 9