brushed build

yay

yay

Well-Known Member
rec'd 4x 8.5/20mm brushed motors today to plonk on an eachine e011 board.

haven't assembled yet, need to construct frame. these items are to knock around for the while until i can budget for more, aspiring for a "more expendable" micro for short range property surveillance. thought i'd throw it up to fish for interesting comments.

the e011 takes 7mm motors and doesn't have enough to deal with wind (as we all know by now) - the eachine qx80 eg. has these 8.5mm motors and can handle a bit more wind. otoh, i've observed 8.5mm installed on e011 "without much difference" according to blogger. i'm guessing the difference between 8.5mm on the qx80 and 8.5mm on the e011 is due to software settings for the motors. there's no mini usb connector on the e011 fcb, afaik when people flash to it, it's done with a couple of wires (and ..afaik.. this is done using keil? which is some s/w for programming microcontrollers..) so.. if i wanted to reprogram the e011 board to send more juice to the motors, it would involve a bunch of hairy nonsense i don't want to deal with atm. :)

these little builds with the e011 fcb and cheap motors off ebay are inexpensive for me ($12) since i have three e011 transmitters already.. and will give me a chance to experiment with different cameras and such.

it also looks like i can bind the e011 with my fs-i6 (found vid, haven't been thru it yet) so that should give me some opportunity to increase the motor performance.

anyway.. if you got advice, or better info on editing the software, throw it up :) (i don't think i'm interested in the acro mode flash, i like the e011s the way they are) off to wander in the desert and see if i can find a section of yucca stalk.. like balsa, good stuff.


also a good question -

right or wrong? there's no maximum on the mAh on a battery if it can carry it... if i can get it to take off with a 1s battery with 4x the mAh rating, it's not going to catch fire and stuff right?
 
QuadKid

QuadKid

Noth'in Like a Flat Top
yay said:
right or wrong? there's no maximum on the mAh on a battery if it can carry it... if i can get it to take off with a 1s battery with 4x the mAh rating, it's not going to catch fire and stuff right?
Click to expand...

No the Mah Rating is basically the gas in the tank, the higher the rating the more fly time. The "C" rating IE: 1800mah/65C is the batteries AMP output, or in other words the Punch it will provide at full throttle.
 
yay

yay

Well-Known Member
anyone rec a prop for brushed ?? i kinda pulled 2.5" as max. size for the frame, which pulled up 2.5" spares for the q100 (haven't seen if that's a 1s or 2s model yet)

in this thread someone kinda suggests 2.5" is as big as you want to go for brushed, wiht other pooters oops i mean posters saying things are too big for a brushed to handle.
https://www.rcgroups.com/forums/showthread.php?2620010-propeller-for-8-5mm-motor

but no one is like, "dude, the biggest you *oughta* go for a brushed is _____"

it's early so i may search more but i know you love to post.

also read bullnose are less efficient, which semes reasonable unless they're in a duct.
 
yay

yay

Well-Known Member
another convo waster Q...

..for the next month or so i'm only using my "spare change" for parts, no big purchases.. but i don't like to "buy the same thing twice" because i bought something earlier with reduced compatability/features et c..

i figure the next thing to buy is another vTx. the region here is about 250m, which seems to be covered (!) by 25mw range :) but i think i want to bump up some for better quality. (one of the assets is it's extremely arid here, so transmission quality is good, with no trees or moisture) recs?
 
yay

yay

Well-Known Member
for the folks looking, 2.5" lucky guess. the longer range of props for brushed motors seems to be dominated by 65mm kingkong, it's all i've seen, it's all i'm seeing.. there are other 65mm props out there but they allegedly suck. kk also do a 55mm prop but that apparently suffers from QC. shame because their 55 are rounded tips instead of slightly bullnose/flat like the 65mm. but "the whole world loves kk 65mm props".

about finished frame yesterday, made outta wood, not so bad. at 155mm and maybe a hair over 9 grams, the e011 frame is 65mm and about 4 grams so i figure i'm not doing so bad.
 
Chuck

Chuck

Well-Known Member
yay said:
for the folks looking, 2.5" lucky guess. the longer range of props for brushed motors seems to be dominated by 65mm kingkong, it's all i've seen, it's all i'm seeing.. there are other 65mm props out there but they allegedly suck. kk also do a 55mm prop but that apparently suffers from QC. shame because their 55 are rounded tips instead of slightly bullnose/flat like the 65mm. but "the whole world loves kk 65mm props".

about finished frame yesterday, made outta wood, not so bad. at 155mm and maybe a hair over 9 grams, the e011 frame is 65mm and about 4 grams so i figure i'm not doing so bad.
Click to expand...
Curious as to why you're going with brushed motors. Many of the posts that I've seen here have been associating brushed motors along with the toy grade quads usually equiped with them, as inferior to anything with brushless motors and ESC's. In light of that, your pursuing brushed motors for a quad seems like the quad equivalent of removing superchargers or turbochargers from engines, and reducing their power output. So I'm a bit puzzled by this.
 
yay

yay

Well-Known Member
$4 is why ;)

after losing three e011s i'm left with three useless radios :D it's just over $4 for a set of 4 8520 motors on ebay, $8-odd for a fcb, and i've already got a bunch of likkle props, so i get a knock-around quad for $12-odd.

i'm not deconstructing the 110GT, these are little "cute" and expendable things... some 8.5mm builds fly well enough for my purposes, and they ought to make decent gifts as well.

small and manoeuverable does it every time :)
sjg02.jpg



besides... you know i'm going to have this thing in the air long before my props for the 110 get here :p

warhammer 40k (one of the more successful tabletop miniature franchises) ...used to field an army of hobbits on hoverboards with melta grenades and slingshots.. until everybody decided i couldn't do that anymore :D :D :D can't stop what you can't hit, + melta grenade. (i realise that an authentic combatant may have some distain for simulation, but then again, an authentic combatane may have some reverence for simulation :p depends on the quality and criteria, but it's the old david and goliath story. if you can mount an effective weapon on something difficult to destroy, you're fielding).
 
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Rick M

Rick M

Absent-minded professor
Chuck said:
Curious as to why you're going with brushed motors. Many of the posts that I've seen here have been associating brushed motors along with the toy grade quads usually equiped with them, as inferior to anything with brushless motors and ESC's. In light of that, your pursuing brushed motors for a quad seems like the quad equivalent of removing superchargers or turbochargers from engines, and reducing their power output. So I'm a bit puzzled by this.
Click to expand...

For someone getting into FPV and wanting to learn, you can build a decent brushed motor micro FPV quad for about $60 soup-to-nuts. The inevitable breaking and repairing/replacing is a lot cheaper early in the learning curve.
 
yay

yay

Well-Known Member
..my favourite gaming experience..

shadowcat_by_therealgrale-d5es6li.jpg


"shadowcat" 45 ton frame that could take 7/11/7 walk/run/jump and still have room four a couple PPCs and armour. i think everybody knows what DFA stands for. first thing first, always maximise motility for command of the field.


rick - i'll get a piccie of my frame when it's mounted and resolved. raw materials = one wooden paint stirrer ;) of course, i have yet to discern how many of these ebay motors i'm going to go through ... :p
 
Chuck

Chuck

Well-Known Member
yay said:
$4 is why ;)

after losing three e011s i'm left with three useless radios :D it's just over $4 for a set of 4 8520 motors on ebay, $8-odd for a fcb, and i've already got a bunch of likkle props, so i get a knock-around quad for $12-odd.

i'm not deconstructing the 110GT, these are little "cute" and expendable things... some 8.5mm builds fly well enough for my purposes, and they ought to make decent gifts as well.

small and manoeuverable does it every time :)
sjg02.jpg



besides... you know i'm going to have this thing in the air long before my props for the 110 get here :p

warhammer 40k (one of the more successful tabletop miniature franchises) ...used to field an army of hobbits on hoverboards with melta grenades and slingshots.. until everybody decided i couldn't do that anymore :D :D :D can't stop what you can't hit, + melta grenade. (i realise that an authentic combatant may have some distain for simulation, but then again, an authentic combatane may have some reverence for simulation :p depends on the quality and criteria, but it's the old david and goliath story. if you can mount an effective weapon on something difficult to destroy, you're fielding).
Click to expand...
Actually, as a former USAF combatant, I spent a considerable amount of time in simulators at my base. Though they've obviously advanced in realism since the 1970's. The idea then as now, was/is that practicing on a simulator is way cheaper than the cost per hour of putting an actual aircraft in the air for roughly fourteen hours, on a training mission.
 
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Chuck

Chuck

Well-Known Member
I am curious about another aspect of this. Can a toy grade quad with brushed motors be upgraded with a hobby grade power distribution board, flight control board, and matching transmitter and receiver? That would seem like a logical intermediate step between pure toy grade, and hobby grade complete with brushless motors and ESC's. Can toy grade brushed motors work with such internal upgrades, including maintaining the toy grade battery voltage?
 
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Gyro Doctor

Gyro Doctor

Electronics Tech for over 45 years
... Also a BIG fan of "Mech Warrior" here too !!! ...
After I bought a "Side Winder Pro" joystick and could move my hips by twisting the stick I was damned near invincible ... lmao ...
I could run circles around a firing opponent and still "hold a bead" on them the whole time ... having the "hat switch" on top was also fantastic,
as well as the sliders and countless other programmable buttons all over the base too :p
 
Chuck

Chuck

Well-Known Member
Gyro Doctor said:
Yes, but it's kinda like putting lipstick on a pig.

https://www.ebay.com/i/122140739692?chn=ps&dispItem=1
Click to expand...
I've seen that on eBay already. But that isn't as complete a conversion as going with hobby grade hardware "upstream" from the brushed motors. The Syma X8 conversion kit still uses the Syma FCB, and transmitter. Plus it is using brushless motors. And from watching a YouTube video of the conversion, the Syma FCB, and transmitter provide erratic control. I was thinking along the lines of replacing the toy grade FCB, and transmitter, with hobby grade components, but keeping the brushed motors, as Yay appears to be plotting with his Eachine contraption.
 
yay

yay

Well-Known Member
"plotting.. contraption" ;) a simple farmer can explain, a stalk of dried hay can pierce to teh heart if you hit it that way. ever get some in your gloves that goes under your fingernail.. :p devious complications, all one has to do in life is be correctly aligned with the causal plane.

talking about haystalks i'll have this thing assembled soon. fun times. yes i've considered such fabrication materials.

mcwarrior.. started w board game. can't stand the computer games, everything's sl
ow. my internet connection. the engines. tried a few editions, never played them because they won't let me use a lot of tonnage for engine. they want me to play a slow walking tank game. kidding me?? "how to turn the universe's most funnerest thing into about as exciting as urinating on yourself in the care home". soz if you dev those, no one understands me. everybody is wrong but me because they cannot tolerate how awesome awesome is. so i wrote my own, but since i also wrote my own gx engine, it's like 200 triangles a frame :) my netbook runs opengl 1, so i haven't bothered to learn it yet because it's not even enough to run shadertoy.

just for fun :)

fite.png


god people suck compared to me.
 
yay

yay

Well-Known Member
i mean you can say what you like but i had to do a LOT of typing because some damp biscuit wouldn't uncap the engine tonnage.
 
Chuck

Chuck

Well-Known Member
yay said:
i mean you can say what you like but i had to do a LOT of typing because some damp biscuit wouldn't uncap the engine tonnage.
Click to expand...
I tried to get John Cleese to translate that into American English (now THERE's an oxymoron....), but he wasn't available....
 
Chuck

Chuck

Well-Known Member
Chuck said:
I tried to get John Cleese to translate that into American English (now THERE's an oxymoron....), but he wasn't available....
Click to expand...
Still haven't received an answer, as to what determines if a brushless motor will run properly at 3.7, 7.4, or 11.1VDC?
 
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