START HERE |
|
Register | FAQ | PM | Events | Groups | Blogs | Calendar | Mark Forums Read |
Unregistered
|
mQX Blade mQX Quad Helicopters Information and Help |
|
LinkBack | Thread Tools | Display Modes |
03-22-2013, 11:23 AM | #281 (permalink) | |
Registered Users
Join Date: May 2012
|
Quote:
__________________
A few little birds... |
|
Sponsored Links | |||
Advertisement |
|
03-22-2013, 02:52 PM | #283 (permalink) | |
Registered Users
Join Date: Mar 2007
|
Re: Quad Mods?
Quote:
Those props look much nicer than the other counter rotating 5x3's from HK that are horribly out of balance. Might be worth a try. Im not sure how fast code will work, does 10.1 support fully damped on a regular 7a? The mqx board seems to be tuned for geared brushed motors and heavy props, my attempts with high gains and 1s with xp3a's didn't go so well, oscillation city! Sent from tapatalk
__________________
Dylan ~ www.AstroidDesigns.com |
|
03-22-2013, 04:54 PM | #284 (permalink) | |
Registered Users
|
Quad Mods?
Quote:
Seems to me that stock booms are too short with your motor mounts. I ordered some 3x3 square tube too. Sent from Tapatalk app |
|
03-22-2013, 05:18 PM | #285 (permalink) | |
Registered Users
Join Date: Mar 2007
|
Re: Quad Mods?
Quote:
Sent from tapatalk
__________________
Dylan ~ www.AstroidDesigns.com |
|
03-22-2013, 05:28 PM | #286 (permalink) |
Registered Users
Join Date: May 2012
|
The E-flite prop blades are 55mm from tip to shaft center, if I remember correctly.
__________________
A few little birds... |
03-24-2013, 03:47 PM | #287 (permalink) |
Registered Users
|
Waiting for the Airtime LG (thanks hotshot888) I decided to lighten the structure by eliminating the heavy T-Rex 250 landing gear and use simple ties.
All the ties used weight only 1,5 grams. |
04-04-2013, 12:20 PM | #288 (permalink) |
Registered Users
|
BL mQX completed.
Ok, it flies now.
Very powerful, but despite this, more controllable, especially for the incredible consistency of thrust. You can put it in steady hovering without having to constantly adjust the throttle. Probably the mechanical friction of the stock geared-down transmission, make the thrust a variable rather than a constant. Then it's quiet, it flips faster than stock and the pitch pumps is always perfectly flat. I can fly at home with the same precision and safety than before, it seems that the increased power does not affect the precision flying. I would say that the added power is to fill the gaps of the model. I speak for example of super fast bank circles where the stock model tends to lose altitude and stability. Now you can push fast flight maneuvers unthinkable with the brushed model, but then again, the power goes where it is needed. It's not all roses though The typical wobbles caused by wind or fast drop in altitude remain, perhaps a little diminished. I have to try it with the E-Flite three-blade props that seem to be considerably better than GWS 5030 I use now. I'm flying with 2S 350 mAh lipos and after 3:30 mins the cells are 3.78 volts. Probably a better lipo could be 500 mAh for performance and 800 for autonomy. Finally, I can confirm that the XP7A "fast" modified with 160 ohms pull down resistor, tail flashed with v. 10.1 BlHeli code, works perfectly in full damped mode and maximum braking. No more in-flight motors shutdown Some shots as usual @ hotshot888: Is the Airtime landing skids you sent to me for 1S 500 mAh lipo? I cannot find a way to accommodate a 2S lipo... |
04-04-2013, 02:15 PM | #289 (permalink) | ||
Registered Users
Join Date: May 2012
|
Quote:
Quote:
Yes. I mount Hyperion 550s and Nano 600s (for 1S operation) in the Airtime battery cage. But I use a piece of velcro for 2S batts. See pics.
__________________
A few little birds... |
||
04-04-2013, 02:52 PM | #290 (permalink) | |
Registered Users
|
Quote:
Test passed with honors With such a wind the stock model easily goes out of control, with a horrible instability sometimes bringing it to tip over. This bl is rock solid against the wind and I can fly with confidence and agility Another thing I forgot to mention, is the rudder crispness. No more spongy piro stop and faster piro too! I can almost say that Blade has once again put a brave heart (the AS3X board) in barely adequate mechanics. Only a serious upgrade can express the potential of the electronic design. Thanks for the tip and pics |
|
04-04-2013, 03:04 PM | #291 (permalink) | |
Registered Users
Join Date: May 2012
|
Quote:
PM sent BTW.
__________________
A few little birds... |
|
04-04-2013, 03:43 PM | #292 (permalink) |
Registered Users
Join Date: Mar 2007
|
Re: Quad Mods?
Good stuff, I would be really interested to see what the $18 flip mwc board would do on it with the esc's running multi code.
You can run a spek sat on the flip now too. Sent from tapatalk
__________________
Dylan ~ www.AstroidDesigns.com |
04-04-2013, 04:55 PM | #293 (permalink) |
Registered Users
Join Date: May 2012
|
+1 Try some "pirouetting throttle pumps", very nice!
__________________
A few little birds... |
04-06-2013, 05:10 AM | #295 (permalink) |
Registered Users
Join Date: Mar 2007
|
I have a feeling that Multiwii arduino will be right up your alley
__________________
Dylan ~ www.AstroidDesigns.com |
04-13-2013, 05:42 AM | #296 (permalink) |
Registered Users
|
I just broke three arms in a small crash against a tree, so I tried to reinforce them.
hotshot888, I really love the stickers you send me. What did you use to make them? |
04-18-2013, 11:43 AM | #298 (permalink) |
Registered Users
Join Date: Jan 2011
|
The Flight of the Bumble Bee, thats beautiful liftbag, just sweet dude.
Dave
__________________
MA Ion X v2 FBL, Fut.T8FG CGY750, Spektrum DX8, 3 Blade 120 SRs, 1 stock, 1 full RKH, 1 half stock-half Xtreme, 2 mCX2s, 1 full MH, 1 w/S300 canopy and tail, 1 mCPX v2 full MH, 1 mSRX w/ext 125 mm tail, 1 mSR MH Swash. |
04-27-2013, 09:23 AM | #300 (permalink) |
Registered Users
|
List of parts required to convert to brushless
I write this post because of the many requests I receive on my youtube channel.
BESCs I used four modded XP7A. The mod consists in replacing the three P-FET pull-up resistor (those indicated by yellow arrows) with 160 ohm type, to speed up the off-time so to can flash the escs with the BlHeli fast version code in order to enable the full damped mode. I must say that according with some tests, is probably not as necessary to operate in full damped mode, then quite simply, just flash a stock XP7A with the normal version of the BlHeli tail code that enable the light damped mode. Refer to this topic about the BlHeli code. The 5 volt output of one of the 4 BESCs will be used to power the 4 in 1 board because it is highly recommended to power the motors at 2S. I used a pre-drilled board to assemble together the 4 BESCs connecting in parallel the power supplies of speed controllers, but this is one area that concerns the inventiveness of each. With the latest versions of BlHeli code you can flash the HK 10A esc, that can work in full damped mode at 2S and 3S too. Although it is probably too large to stay within the Frank Lachmund canopy, it seems to me a good and cheap alternative to XP7A. The pwm signals to drive the four bl escs are indicated here Names shown are for the + mode. For the X mode: front = front-left right = front-right rear = rear-right left = rear-left The motors We used the AP05 3000KV. It comes with the prop saver, but if you dont need it, you can use the NTM Prop Drive 13-12 3000KV, cheaper and with great reviews. These motors do not have connectors and wires are short, so you have to solder thin enameled wires and insulate the solder joints with heat shrink tubing. The motor mounts This is the sore point. They do not exist in the market and those discussed thus far are prototypes made by Dylwad. Unless Dylan decides to produce them in series, DIY is the only way The propellers Actually we use the E-flite 110 x 80mm 3 Blade propeller and the counter-rotating one. You need to enlarge the hole to fit the 1.5mm motor shaft. Better to use a 1.35/1.4 mm drill bit. If you use the 1.5mm better to use CA to secure the prop to the shaft. Alternative blades are the GemFan 5030 5x3 or the 5030 5x3x3. They give more thrust but a little more wobble too. You need 1.5mm adapters for these props. Side note: I have never found a prop that was perfectly balanced, so you need to get organized for this purpose. The four booms According to the motor mount used, the stock boom may be too short. I have built them properly cutting a 3x3 square tube carbon pultruded bar. The landing gear To prevent the quad lands on the battery, you will have to provide that as well. Here some ideas. AirTime landing skids (DylWad and hotshot888 solution) Align TREX 250 LG. Cable ties. Battery The simple way to attach the battery is velcro mount and a velcro strap. I use several battery types. Hyperion 2S 320 mAh for short flight time, many 130X 500 mAh batteries and even 2x600 mAh (120SR) in series or 2x320 mAh in parallel. |
Thread Tools | |
Display Modes | |
|
|