Thanks for the feedback, On balancing props start with the blades horizontal, see which one drops, rotate the prop 180 and perform again, if the same blade drops that is the heavier one, either gently sand the underneath of the heavy blade until they balance or alternatively add a slither of tape to the lighter blade to balance it out. Next to balance the hub place prop vertical and note what direction it falls, place it vertical again with the opposite blade at the top and note again what way it falls, you will notice it always falls one side, the side that falls down it the heaviest side of the hub, to balance the hub option 1 is to remove material from the heavy side with sandpaper doing a little at a time, option 2 is to add some glue/clear nail varnish in a small lump to the opposite side to add weight to that side of the hub, keep doing until the prop will site in what ever position you leave it. Hope it helps
5:49 I trusted you... did it this way.. shaved 8 carbon Fiber props until balanced... actual appropriate shaft arrived today... I double checked the balance... ALL are OFF.. guess why? The tubing was slightly thinner on one side.. thus, every prop I did with your method has to be re-done. I've learned my lesson, I wish I could say you helped me... please share with others that the rubber retainer you are using to "center" the prop may just be OFF... and so will all of props be if you go that route. Safe to say, I'm disappointed... sent me down the wrong path my friend...
Sorry - but using the cone - that's a hash up and not what is supposed to be done. Use the proper bush ... or get better gear - the ODay / OCDay balancer has much better instructions
What are your thoughts on keeping the props on at all times, and not removing them unless absolutely necessary? Will this help elongate the life of the threads?
@hitman_for_hire2 A little lost at what you're explaining here could you elaborate a little bit more and say using o-ring like the yuneec typhoon does.,.. explain this more please....... And then explain the rest of your comment is that an alternative to the device this gentleman has and another way of balancing the blade without needing extra material you could leave a message in the comment section or you can PM me either or I met you I'm not the only person that doesn't quite understand your comment but I find what you're saying is interesting and it sounds like you know what you're talking about could you enlighten me so I know what you're talking about lol 😂
The O-RING keeps the blades from spinning off in case of hard stop or other hard directional changes. Slip the o-ring over the threaded shaft before spinning the blades on. Usually a throttle-up is what snugs the blades against the o-ring. Yuneec got it right when they added this security feature.@@gdent58
hi can you tell me where i can buy the rod you are using with the rubber so i dont have to buy the whole balancer,cause there are a lot of dimensions in the rods,give me a link please,thanks
In the kits - there should be a specific brass bush that fits P3 prop hubs and the silicon is only used to keep the bush in place, It is not designed to be the mount for the prop.
I would not add any form of lube to motor bearings, these are sealed pre greased at the factory, adding any form of thin lube could actually I introduce dirt and grit and wash out the existing lubrication.
if we use the metal hub, can we disable the active braking feature in the DJI app? does it matter which side of the blade you put the electrical tape on? i see you put it on the top side. finally, near the end, you said the hub is heavier at the bottom so how can we resolve that? i didnt see you do anything to the prop
Wouldn't placing tape on the underside of the prop be better? I'm new to small RC airplanes and multicopters but if a layer of frost/snow/ice can cause issues with a human airplane, then it seems like the tape could as well if placed on top of the airfoil.
How do you balance hubs? I've been using hotglue as it can be sliced away at to reduce precisely but curious if there is a more elegant approach. Super glue didn't seem to be heavy enough for really bad hubs.
I have a couple DJI Phantom 3's. Is really all that important to balance the props? Never have before. In adding electrical tape or sanding the blade, can't you change the aerodynamic properties of the prop?
Insulation tape fixes the unbalanced prop but causes airflow issues. Sand it lightly and widely so you don't cause a dip on the prop profile. Advice from a helo pilot. Good video otherwise, subscribed.
I have flown my p3p with the props from my p2v and have had no problems. I put them on and tighten them with the wrench. I don't think I would ever just spin one on and not tighten it down. After flying and working it I always have to use the wrench to get them off. So I see no harm in using them, and in fact DJI costumer service has no issues with using them. They recommend using them when I called a talk to them. U.S. Ethan info how you will. I plan to use my carbon fiber props from my P2V .
what to do when the bottom prop is heaver? normal to use to just buy new one? did not get your last point clearly sorry...any more explanation would help. thanks
Question - these are self tightening props. They lock in the opposite direction the blade spins. Why would they fly off ? Also, where did you get that balancer ?
They're self tightening in the sense that the air pushes against the prop, tightening it as it generates lift. Flying normally they should be fine, but if they're not snug on the motors they can unscrew mid flight if you fly aggressive or stop too abruptly.
Great video. You demonstrated the "static balance". Usual method for "dynamic balance" is to put a tape close to the widest part of the blade (apprx. CoG of the blade).....
Hi! Why don't you use the tightening tool that comes with the Phantom 3 in order to tighten the props really good? By doing that the props with metal hub won't be a problem. In fact the upgrade carbon props for the Phantom has a metal hub. An alternative might be to use LocTite (thread locking). Or maybe both. /BR Rune
I only stick to the stock hubs after some mishaps with the carbon fibre ones. I need to balance my props but don't want to distrub airflow. Will sanding my props not mess anything up?
Big guys will cause an imbalance; just clean off one prop until it’s balanced. I have a prop alignment and tilt issue; I’ve been jus bending gently but there are three screws in addition to four mounts....?
Well friend, the problem is that tape alters the shape of the blade and has a negative effect on the blade aerodynamics. It's a wing at the end and putting a piece of tape on a high-speed blade can affect the draft and resistance.
not like you think. They actually make balancing tape (the better choice) that I have used on the edges of RC helicopter (multi thousand dollar models, not $50/walmart jobs) with zero effect whatsover. It actually should be folded over the leading edge and has zero effect on aerodynamics. No more than a super think layer of water would over the WHOLE wing (not talking ice).
By adding a tape definitely affect the aerodynamic while the prop is spinning. you will lose more unnecessary lost. You look at high end hypercars, even a nut for the tire matters when its travelling at high speed cos of G-Force. Not logic at all.
Hi folks. This way of attaching braking props by screwing them on would worry me. I don't have a Phantom 3 but if I did I'd be looking for some anti-shake washers - if they will fit. Alternatively maybe a small rubber 'o' ring. Try either at your own risk and test very thoroughly at a low level! Better still, do a tie down test. Out of balance props are very likely to cause the screw thread in the hub to become loose over time as well. No wonder DJI changed the attachment method. Bob.
Overall tag these props have been extremely reliable, with composite hubs they do grip very well and in hundreds of flight hours failure is not common tbh.
The video makes a big deal out of nothing ... fit the props correctly and there is no problem. Its only where people do not check first ... do not tighten props correctly and then go flying.
A properly balanced prop will hold any position the user places a prop. Just because the prop holds horizontal position does not make it balanced. If a prop is placed at any degree within 360 degrees it should NOT move if its properly balanced.
Use some clear fingernail the polish on the tip of the light Side prop never sand on your prop the central force is on the tip of the prop not the hub do not add weight to the hub.
I have been manufacturing prop balancing rods for over two years ,first I machined from solid alum rods cheaper to build but I was not satisfied with the results. Now I machine just the tips from alum & use very small steel rods and heat treat. Each rod is checked to 1/2 thousandths. We test multiple types of props. Due the the light weight of these props my rod have to be +/- two thousandths of an inch or we scrap them because they will not work correctly. There is no way a piece of tape or rubber tube will hold close enough to balance a prop accurately. Please check out my cusomer reviews on amazon Thanks EJH www.ejhdrones.com/collections/ejh-precision-prop-balancers/products/prop-balancer-dji-phantom-series-ejh-precision-self-centering-balancer-rod
I was trying to figure out how to balance the propellers, and this video really helped me . Good info vid.
Thanks for the feedback, On balancing props start with the blades horizontal, see which one drops, rotate the prop 180 and perform again, if the same blade drops that is the heavier one, either gently sand the underneath of the heavy blade until they balance or alternatively add a slither of tape to the lighter blade to balance it out.
Next to balance the hub place prop vertical and note what direction it falls, place it vertical again with the opposite blade at the top and note again what way it falls, you will notice it always falls one side, the side that falls down it the heaviest side of the hub, to balance the hub option 1 is to remove material from the heavy side with sandpaper doing a little at a time, option 2 is to add some glue/clear nail varnish in a small lump to the opposite side to add weight to that side of the hub, keep doing until the prop will site in what ever position you leave it.
Hope it helps
5:49 I trusted you... did it this way.. shaved 8 carbon Fiber props until balanced... actual appropriate shaft arrived today... I double checked the balance... ALL are OFF.. guess why? The tubing was slightly thinner on one side.. thus, every prop I did with your method has to be re-done. I've learned my lesson, I wish I could say you helped me... please share with others that the rubber retainer you are using to "center" the prop may just be OFF... and so will all of props be if you go that route. Safe to say, I'm disappointed... sent me down the wrong path my friend...
I bought the proper shaft back in November... all is good. Thanks John. Now, the P4 quads don't work with this balancer... new prop design...
Nope. The blade is centred by the machine cone, not the tubing. Bob.
Thank you for pointing this out. I almost did the same mistake.
Correct - the silicon tube is NOT there to centre the prop. There is a specific brass bush provided for that job.
Sorry - but using the cone - that's a hash up and not what is supposed to be done. Use the proper bush ... or get better gear - the ODay / OCDay balancer has much better instructions
Much thanks, have been searching for a vid such as this, you have helped me immensely!!!
you forgot to explain how to get the hub to be not heavy on one side
What are your thoughts on keeping the props on at all times, and not removing them unless absolutely necessary? Will this help elongate the life of the threads?
Use an o-ring like the Yuneec Typhoon does. Tighten the prop a half turn against an o-ring that can be found at any hardware store. I love them.
@hitman_for_hire2 A little lost at what you're explaining here could you elaborate a little bit more and say using o-ring like the yuneec typhoon does.,.. explain this more please....... And then explain the rest of your comment is that an alternative to the device this gentleman has and another way of balancing the blade without needing extra material you could leave a message in the comment section or you can PM me either or I met you I'm not the only person that doesn't quite understand your comment but I find what you're saying is interesting and it sounds like you know what you're talking about could you enlighten me so I know what you're talking about lol 😂
The O-RING keeps the blades from spinning off in case of hard stop or other hard directional changes. Slip the o-ring over the threaded shaft before spinning the blades on. Usually a throttle-up is what snugs the blades against the o-ring. Yuneec got it right when they added this security feature.@@gdent58
@@USMC-Sniper-0137 ty
nice video, how do you balance the hub? Blades yes I understand but an out of balance hub - how do you fix that?
Hi,
Excellent video. May I ask that on a Phantom vision 2 plus I can use the composite without issue, right?
hi can you tell me where i can buy the rod you are using with the rubber so i dont have to buy the whole balancer,cause there are a lot of dimensions in the rods,give me a link please,thanks
In the kits - there should be a specific brass bush that fits P3 prop hubs and the silicon is only used to keep the bush in place, It is not designed to be the mount for the prop.
Hi buddy, what would be appropriate maintenance of the motors, do they need a kind of oil or lube?
I would not add any form of lube to motor bearings, these are sealed pre greased at the factory, adding any form of thin lube could actually I introduce dirt and grit and wash out the existing lubrication.
if we use the metal hub, can we disable the active braking feature in the DJI app?
does it matter which side of the blade you put the electrical tape on? i see you put it on the top side. finally, near the end, you said the hub is heavier at the bottom so how can we resolve that? i didnt see you do anything to the prop
nice one... thanks for the info. just need to find where to purchase the balancing unit from.
great vid. Is insulation tape electrical tape? Anybody have a link for an example?
Wouldn't placing tape on the underside of the prop be better? I'm new to small RC airplanes and multicopters but if a layer of frost/snow/ice can cause issues with a human airplane, then it seems like the tape could as well if placed on top of the airfoil.
How do you balance hubs? I've been using hotglue as it can be sliced away at to reduce precisely but curious if there is a more elegant approach. Super glue didn't seem to be heavy enough for really bad hubs.
if I buy one of those dubro balancers, does it come with that little rubber stopper?
is it smart / safe to tighten props by hand? or should the tool be used?
I really enjoy your videos Mad RC. Very informative! Mad props! :-)
I have a couple DJI Phantom 3's. Is really all that important to balance the props? Never have before. In adding electrical tape or sanding the blade, can't you change the aerodynamic properties of the prop?
+Future World Media Idiotic to do this things..
Insulation tape fixes the unbalanced prop but causes airflow issues. Sand it lightly and widely so you don't cause a dip on the prop profile. Advice from a helo pilot. Good video otherwise, subscribed.
I have flown my p3p with the props from my p2v and have had no problems. I put them on and tighten them with the wrench. I don't think I would ever just spin one on and not tighten it down. After flying and working it I always have to use the wrench to get them off. So I see no harm in using them, and in fact DJI costumer service has no issues with using them. They recommend using them when I called a talk to them. U.S. Ethan info how you will. I plan to use my carbon fiber props from my P2V .
what to do when the bottom prop is heaver? normal to use to just buy new one? did not get your last point clearly sorry...any more explanation would help.
thanks
Fares Alanazy He didn't explain that last part, but I assume you use the tape in the middle to balance it out too.
Great video - the second one from you that I have learned from - thanks!
better stainless stell or plastic ??
This is a lot of good information... Thanks
wonderful and so interesting photography Thank you
Worked Great!!! Thanks for posting this.
This is a good video, and your feeling is quite reasonable.
Question - these are self tightening props. They lock in the opposite direction the blade spins. Why would they fly off ? Also, where did you get that balancer ?
They're self tightening in the sense that the air pushes against the prop, tightening it as it generates lift. Flying normally they should be fine, but if they're not snug on the motors they can unscrew mid flight if you fly aggressive or stop too abruptly.
Great video. You demonstrated the "static balance". Usual method for "dynamic balance" is to put a tape close to the widest part of the blade (apprx. CoG of the blade).....
You didn't do it in the video, but I take it you just add another spot of insulting tape to the light side of the hub to balance it?
How do you balance the hub??
i coloured my dji phantom 3 propellers with a marker will that be a problem?
Hi!
Why don't you use the tightening tool that comes with the Phantom 3 in order to tighten the props really good?
By doing that the props with metal hub won't be a problem. In fact the upgrade carbon props for the Phantom has a metal hub. An alternative might be to use LocTite (thread locking). Or maybe both.
/BR Rune
I only stick to the stock hubs after some mishaps with the carbon fibre ones. I need to balance my props but don't want to distrub airflow. Will sanding my props not mess anything up?
how do you know when props need to be balanced? Do the props that come in the box need to be balanced
+Pmason718 yes they are all out of balance a bit .. they will fly but its better to balance them
self undue? you mean loosen?
Great vid!!! GreExcellentat job!
Good video, but I think a light sanding would be better
Big guys will cause an imbalance; just clean off one prop until it’s balanced.
I have a prop alignment and tilt issue; I’ve been jus bending gently but there are three screws in addition to four mounts....?
Good job
Well friend, the problem is that tape alters the shape of the blade and has a negative effect on the blade aerodynamics. It's a wing at the end and putting a piece of tape on a high-speed blade can affect the draft and resistance.
not like you think. They actually make balancing tape (the better choice) that I have used on the edges of RC helicopter (multi thousand dollar models, not $50/walmart jobs) with zero effect whatsover. It actually should be folded over the leading edge and has zero effect on aerodynamics. No more than a super think layer of water would over the WHOLE wing (not talking ice).
FALOU ...OBRIGADO.
thanks mate. good info.
The same as using Teflon as a tightening washer
why didnt dji just use a metal hub propeller with a rubber washer inside. simular to a lock nut. ?
Thanks for the info !!
anyone have the threading on the rod so we can make our own?
Thank you so much
Rather than tape, how about a magic marker swipe? Won’t be far off...
By adding a tape definitely affect the aerodynamic while the prop is spinning. you will lose more unnecessary lost. You look at high end hypercars, even a nut for the tire matters when its travelling at high speed cos of G-Force. Not logic at all.
Just put a drop of red locktite in the hub when you put it on. It will not come off.
Hi folks. This way of attaching braking props by screwing them on would worry me. I don't have a Phantom 3 but if I did I'd be looking for some anti-shake washers - if they will fit. Alternatively maybe a small rubber 'o' ring. Try either at your own risk and test very thoroughly at a low level! Better still, do a tie down test. Out of balance props are very likely to cause the screw thread in the hub to become loose over time as well. No wonder DJI changed the attachment method. Bob.
Overall tag these props have been extremely reliable, with composite hubs they do grip very well and in hundreds of flight hours failure is not common tbh.
The video makes a big deal out of nothing ... fit the props correctly and there is no problem. Its only where people do not check first ... do not tighten props correctly and then go flying.
A properly balanced prop will hold any position the user places a prop. Just because the prop holds horizontal position does not make it balanced. If a prop is placed at any degree within 360 degrees it should NOT move if its properly balanced.
Use some clear fingernail the polish on the tip of the light Side prop never sand on your prop the central force is on the tip of the prop not the hub do not add weight to the hub.
plastic threads will wear away and lose its grip after time!
Do not use tape or anything that disturbs the air flow over the prop. terrible advice.
gently sand the bottom side.
Plus it could easily come off.
I mean, how many rpm's we got there,Vs cheap chinese insulation tape glue....LoL
New DJI P3 update Firmware v1.2.6
Blob of Loctite stops them coming off.😁
I have been manufacturing prop balancing rods for over two years ,first I machined from solid alum rods cheaper to build but I was not satisfied with the results. Now I machine just the tips from alum & use very small steel rods and heat treat. Each rod is checked to 1/2 thousandths. We test multiple types of props. Due the the light weight of these props my rod have to be +/- two thousandths of an inch or we scrap them because they will not work correctly. There is no way a piece of tape or rubber tube will hold close enough to balance a prop accurately. Please check out my cusomer reviews on amazon
Thanks EJH
www.ejhdrones.com/collections/ejh-precision-prop-balancers/products/prop-balancer-dji-phantom-series-ejh-precision-self-centering-balancer-rod
Thought I'd delve into your dirty past! 🤣🤣🤣🤣🤣😉😉😉😉😉😉😉
Don’t do this lol.
@@MadRC 🤣🤣🤣🤣🤣
They are already balanced by an Asian in the factory
You spend half of this video telling us nothing.
Thanks for the feedback it is appreciated
Why would I want to keep my beard in the sky?
Idiotic to this for the price of the bird....