First build... (Victory rant :D )

U

Umbra

Active Member
I'd like to hear some thoughts, what you guys think.

So, you might remember me. I was the guy that tried building a TC-R260 with kk6040 props and 1806 2280kv motors a while ago? And people told me it would be a seriously bad quad, the motors would be overworked, burn out and it would never reach a good flight time?

well.... I went on and built it anyways and it's a FANTASTIC Quadrotor :p It's also seriously silent... what's up with that? I love it though!

Just got a 8 minute flight time with a 1300 mah 2s battery (25c) and its... actually surprisingly fast (did one punchout and it went flying to twice the height of the house in under a second from 1 meter high) MUCH more powerful than I first thought. I haven't fully tested it's 4200mah battery yet though, and I do think you guys might have been right on that one, so I might not try it... it's pretty heavy in hindsight now. now that I have some experience with the quad, I think a 2700mah battery would be much better for flight time. I'll just use the 4200mah for the fpv gear instead, lol!

But still. I didn't listen and I succeeded... eh... the quad looks ugly as sin though :/

(Btw, the motors were barely warm, the battery was also barely warm (if it could be called warm) and the 10A 3 esc's? they were the coolest to the touch. and the AUW with the 1300 is 320-ish. grams)
 
Im not sure why but this post seems like my child telling me they arent going to get hurt doing what I said not to do, because they havent yet. the 10a esc's are probably the only reason the advice didnt seem right. those esc's wont allow the motors to drain enough power to be overworked. Same reason your getting long flight times out of such a small battery. Mere operation does not indicate proper component mix.
 
DrAbsurd said:
Im not sure why but this post seems like my child telling me they arent going to get hurt doing what I said not to do, because they havent yet. the 10a esc's are probably the only reason the advice didnt seem right. those esc's wont allow the motors to drain enough power to be overworked. Same reason your getting long flight times out of such a small battery. Mere operation does not indicate proper component mix.
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I give up -_-

if it works, it works, dont complain about it. the motors are rated for a maximum of 7 amps on 2s (15 on 3s) so I'm not overworking the esc's, or the motors. Really, the quad flies great and stays really cool. Th esc's are even rated for a 10 second 15 amp burst, so... :/

(I cooled off a bit, sorry.)
 
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I might look into building my own quad just for the fact that it will be quiet. I have a DJI phantom 4 now and it is extremly loud. Getting awesome photos of towns and urban locations would be much easier if the drone was just a little more quite.
 
ThePilotCompany said:
I might look into building my own quad just for the fact that it will be quiet. I have a DJI phantom 4 now and it is extremly loud. Getting awesome photos of towns and urban locations would be much easier if the drone was just a little more quite.
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agreed. Seems it is possible. I never had a Dji, but I did have a JYU Hornet 2 and the neighbors complained about it's noise. this one? I can actually casually talk over it when it's just a few feet away so i'd say it's 2, if not 3 times more quiet. Not sure why it's so quiet though, I just oiled it a little (from the bottom of the motors.... not always a good idea I think) and balanced the props...
 
I’ve seen advertisements for carbon fiber blades that are supposed to be quieter but I am sceptical. I guess the only way to truly know is to find out...
 
ThePilotCompany said:
I’ve seen advertisements for carbon fiber blades that are supposed to be quieter but I am sceptical. I guess the only way to truly know is to find out...
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True O_O i also wanna try them, but... eh... the price you pay for like... 5 decibels less? (if it's 5) is a bit high, I think... still, it is on my list of considerations, it's not like it's THAT much more expencive...right? There might just still be the possibility for us to be surprised.
 
Umbra said:
True O_O i also wanna try them, but... eh... the price you pay for like... 5 decibels less? (if it's 5) is a bit high, I think... still, it is on my list of considerations, it's not like it's THAT much more expencive...right? There might just still be the possibility for us to be surprised.
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I don't know anything about carbon fiber props, but I do know that 10db doesn't sound like much, but each +10db results in a perceived doubling of the sound volume and correspondingly -10db results in a perceived halving of the volume. So -5db should be noticeably less.

Cause-Effect-Perception.gif
 
I've done a little bit of research and here's what I've found.

Things that help with noise reduction:
- Lubricating propeller connections, with WD40
- Balancing propellars
- Carbon fiber blades

And I found this and thought it was funny, someone said that this helps too...
120838-200x300-SnoringEarplugs.jpg


Haha!
 
Spork said:
I don't know anything about carbon fiber props, but I do know that 10db doesn't sound like much, but each +10db results in a perceived doubling of the sound volume and correspondingly -10db results in a perceived halving of the volume. So -5db should be noticeably less.

Cause-Effect-Perception.gif
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That is actually one of the most interesting things I have read today O_O wow...


ThePilotCompany said:
I've done a little bit of research and here's what I've found.

Things that help with noise reduction:
- Lubricating propeller connections, with WD40
- Balancing propellars
- Carbon fiber blades

And I found this and thought it was funny, someone said that this helps too...
120838-200x300-SnoringEarplugs.jpg


Haha!
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Lol, Oh those work, they work wonders :D
 
I would avoid WD-40 like the plague, as it's a magnet for dust and dirt. Take a look at lithium based lubricants for this purpose.
 
Lubricated propso_O are you for real.
I've never heard the like. :p
An unbalanced prop will make a noise so obviously a balanced prop will not.
I have multiple sets of carbon props this I can confirm that they are a bit quieter.
This type of noise though I'm totally not worried about. It's the other, RF.
 
Rick M said:
I would avoid WD-40 like the plague, as it's a magnet for dust and dirt. Take a look at lithium based lubricants for this purpose.
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I used a single drop of singer Multi purpose oil (can be used with motors, as it says on the back) per motor... Would that be ok? I'm very careful to not get any on the windings.


mozquito1 said:
Lubricated propso_O are you for real.
I've never heard the like. :p
An unbalanced prop will make a noise so obviously a balanced prop will not.
I have multiple sets of carbon props this I can confirm that they are a bit quieter.
This type of noise though I'm totally not worried about. It's the other, RF.
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Quick question, are carbon props lighter than plastic props for the same types? or a touch heavier? Now I really wanna try them...
 
I didnt care for the 2 blade carbons I got. They are slightly lighter but not much. made for a horrible noise too, had to turn volume off the gopro on that flight. Took a lot more throttle to keep a normal height. Wasnt impressed at all.
 
Literally talking + a gram or two.
Why would someone oil a propeller if you want it to stay perfectly in place.
I don't see the logic, captain
 
I have them but I would only use them as a last resort. As they are motor killers.
If you crash & the tip of the prop strikes long ways, then it can rip the bell right off or bend the shaft. A plastic prop tends to bend. Carbon does not.
 
The multi-purpose oil will also tend to attract dust & dirt, but in very small quantities it shouldn't be a problem. I would still consider a lithium based lubricant. It will last longer as well.
 
Jackson said:
If you are talking about motor bearings that's a good way to extend their life and can be done periodically.
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Yeah, the bearings. dont see the reason to lube anything else.


Rick M said:
The multi-purpose oil will also tend to attract dust & dirt, but in very small quantities it shouldn't be a problem. I would still consider a lithium based lubricant. It will last longer as well.
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Lithium based lubricant? If I can find it, I will give it a try. What makes a lithium based lubricant less prone to attracting dust though? I can see why dust would become a problem eventually... O_O
 
Here's an example - you can also find it in liquid spray form, but it is much harder to apply precisely. To answer (well, not answer) your question: I don't know why it doesn't attract dust and dirt particles the way other types of lubricants do. That's a good question, but I think it would require a chemist to answer.

If anyone who installs or services garage doors & openers sees you using WD-40, you will hear a primal scream and they will start telling you about white lithium lubricants. ;)

https://www.amazon.com/Permatex-803...82830&sr=8-2&keywords=white+lithium+lubricant
 
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