RE: Walkera Dragonfly #36   
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KDS 450SV Carbon Helicopter RTF,w/6ch 2.4G TX set - RTF
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All Forums >> RC Helicopters >> Electric RC Helis >> Walkera Helis - Dragonfly, etc.. >> RE: Walkera Dragonfly #36
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RE: Walkera Dragonfly #36 - 11/5/2005 8:06 AM   
DDrogon



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From: chilliwack, BC, CANADA
Status: offline 		yes Dowayne it fits beautifully....a perfect fit down to the millimeter.and it is extremely strong,you can hold the helicopter by the tip of my new battery compartment...and thank you for asking I'll find you some pictures right now.still wondering why my speed control does not fire up the motor every single time I already posted waiting for reply on that one.here is three pictures...

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RE: Walkera Dragonfly #36 - 11/5/2005 8:27 AM   
DDrogon



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From: chilliwack, BC, CANADA
Status: offline 		CitYbYdBaY ,,Clint here...as of now I get zero minutes air time....I can't tell my helicopter came with one burnt out servo and and Gyro...what luck.they're sending the new parts.hopefully I'll get in the air soon but the reports on the Gyro don't sound promising.the power when I hold in my hand and move the collective pitch is amazing....so I see power won't be a problem.I've got pictures everywhere take a look...page 28 are the most recent I posted them because I was asked if my canopy fit over my custom battery compartment.I actually am hoping for 15 minutes....maybe I'm dreaming..I'll time my flights soon as I'm in the air.I posted speed control spastic it doesn't want to fire up every single time on cue...takes a couple tries....what's up with that ....am I missing something???

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RE: Walkera Dragonfly #36 - 11/5/2005 12:39 PM   
skygod


 

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From: DublinDublin, IRELAND
Status: offline 		Check your motor isn't mounted too tightly to the main drive gear. You should be able to turn your main rotor easily and the motor will turn. If you can't, the motor is too tight to the main drive gear. Also, check the tension of your tail drive belt, this is where I was loosing alot of power.

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RE: Walkera Dragonfly #36 - 11/5/2005 12:50 PM   
DDrogon



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From: chilliwack, BC, CANADA
Status: offline 		skygod thanks but all moving parts are perfect ...ive done rc for years...its just i would think the brushless speed controler should fire up every time ,mine seem to take a few trys.once its going its good,im puzzled about this.im open to more ideas though.

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RE: Walkera Dragonfly #36 - 11/5/2005 1:05 PM   
Mikey-Flies


 

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From: Fort Saskatchewan, AB, CANADA
Status: offline 		Perhaps the throttle trim needs to be set down a bit (or EPA depending on radio ). The brushless esc won't arm until it gets a suitable low throttle signal (It is a stretch but....)

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RE: Walkera Dragonfly #36 - 11/5/2005 1:08 PM   
skygod


 

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From: DublinDublin, IRELAND
Status: offline 		Depending on what type of ESC you've got, it may have adjustable over current protection? You could tyr adjusting that or if you're electronically minded, you could add a capacitor to balance the ESC ouput at startup (changes apparent impedance seen by ESC i.e. LC network). You could also try turning the main rotor by hand and then hit the power. Just a few ideas, not sure that they're any help!

If you adjust throttle to the point where the rotor just starts to turn, does the ESC cut off? If not, wind it up slowly, does this help or are you better off with full throttle from the start... or does this even make a difference??? Is it totally random?

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RE: Walkera Dragonfly #36 - 11/5/2005 2:08 PM   
thecheatscalc



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From: fayetteville, GA, USA
Status: offline 		it sounds like a loose solder joint or a short. I'd not trust that in the air. It WILL only come on at 20% throttle, that's completely normal. but having to plug it in repeditly? I think it's time to contact the seller!

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RE: Walkera Dragonfly #36 - 11/5/2005 2:09 PM   
thecheatscalc



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Status: offline 		it sounds like a loose solder joint or a short. I'd not trust that in the air. It WILL only come on at 20% throttle, that's completely normal. but having to plug it in repeditly? I think it's time to contact the seller!

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RE: Walkera Dragonfly #36 - 11/5/2005 5:39 PM   
ultraviolet


 

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From: Chicago, IL, WESTERN SAHARA
Status: offline 		X-cell...........I noticed you have a homemade heatsink on the motor. Believe it or
not ! If the heat sink is clamped too tightly on the motor case it will cause the motor
to cog or lockup.

I am currently getting 18 - 20 mins of flight time on 1800mah Walkera lipos with deans
connectors. I am using the Walkera 3200kv brushless motor and a Silver Series Electrifly
SS35 35 amp ESC ( $50 ).

The Walkera 1800mah lipos and wall chargers have been working great !
The wall chargers consistently switch to trickle charge at 12.65 - 12.75 V.
The only upgrade ( highly recommended ) is adding Deans ultra connectors.
I currently have about 20 charge cycles on each of my 3 lipo packs. They seem
to be holding more power now that they have been cycled many times.

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RE: Walkera Dragonfly #36 - 11/5/2005 6:17 PM   
ultraviolet


 

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From: Chicago, IL, WESTERN SAHARA
Status: offline 		Sorry guys............not 18 -20 min. I just timed my 36 through a full pack without setting
it down to let the battery or motor cool off. It flew for 14 min. This is with
the extra weight of training gear and a standard size 7 ch RX.
It would probably fly for longer if i was flying it around instead of hovering
under a constant load.

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RE: Walkera Dragonfly #36 - 11/5/2005 10:17 PM   
i01231


 

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From: , CA, USA
Status: offline 		Hi guys
I'm still struggling with the main gear bumping at the elevator arm. The picture from the manual doesn't fit to any Dragonfly I have seen so far. Please take a look at the picture. My two Dragonfly 36 don't have part number 41. Instead they are using washers instead. Does your Dragonfly uses part 41 to prevent the main shaft going up ??
Thanks
Lothar


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RE: Walkera Dragonfly #36 - 11/5/2005 10:32 PM   
ultraviolet


 

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From: Chicago, IL, WESTERN SAHARA
Status: offline 		Lothar, Your right there is no part # 41. If it were present it would only limit
the down movement of the mainshaft. The main problem is when the shaft moves up.
My main gear IS rubbing the elevator rocker arm. I soaked a cotton swab with teflon
oil and rubbed it around the main gear at the contact point.

Quick fix .........but it works

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RE: Walkera Dragonfly #36 - 11/5/2005 10:40 PM   
DDrogon



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Status: offline 		ultraviolet...I checked the motor it spins freely,actually it runs great lots of power.skygod...I'm not electronically inclined unfortunately.
one observation is when the motor won't fire up it seems to be a radio arming signal thing.. I think because with the battery plugged in to the electronic speed control on a failed motor start up...I'd leave the power to the speed control plugged in...and then I turned the radio transmitter off then back on....just above half throttle trim the motor starts up like normal...and then runs great.if it was a short I don't think turning on and off the transmitter would activate it...(does anyone agree with that assumption)I'm also not using the stock radio I'm using my computerized futaba .throttle travel volume low is set to 110%...and when working normal the trim control starts the motor nicely.still I would expected it to start every single time...it's the stock walkera speak control and motor.does everyone else's stock speed control start every single time on cue????

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RE: Walkera Dragonfly #36 - 11/5/2005 10:47 PM   
ultraviolet


 

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From: Chicago, IL, WESTERN SAHARA
Status: offline 		Do not turn the TX off.......and then back on, without reconnecting the ESC.
The ESC calibrates throttle travel when you plug the lipo in !!
When you shut the TX off and turn it on , the ESC does not know what the throttle limits
are.

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RE: Walkera Dragonfly #36 - 11/5/2005 11:07 PM   
DDrogon



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From: chilliwack, BC, CANADA
Status: offline 		ultraviolet...okay I understand what you said I think must be a microprocessor...anyway when I do turn the transmitter off them back on again I cannot tell anything unusual with the motor it does not seem to run out of sync or out of adjustment ....it runs the motor on and off and the throttle appears normal....I also realize we're not supposed to turn our transmitters off anyway...their first on and last off.I just tested the speed controllerit five minutes ago it fired the engine first try...the problem is this is not always the case.yes I think I have a weird thing happening...from what I can tell from all my testing when it does start the motor it does seem safe to fly.I'm more worried about the yellow servo as I've tested it and it's week but it does work....I'm still waiting for my burnt out Gyro to be replaced to how lucky can I get...you guys are great thanks.any tips are appreciated I'm still learning about these electronics.

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RE: Walkera Dragonfly #36 - 11/6/2005 12:27 AM   
millewi



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From: Pratt, WV, USA
Status: offline 		I had to calibrate my walker ESC. I had to set the throttle on the transmitter to full. Connect the batter in the copter. The ESC will beep a few times and then moved the throttle to the bottom. After that it found the limits. Not sure if all the walker ESC's are set the same so I would remove the main blades before doing this.

I'm not flying my 36 much right now. I got a x400 that is one sweet bird. I'm getting ready to put in a different receiver in the #36 so that I can use my Hitec radio with it. I want to get a cc30 ESC's and a futaba G401 gyro along with a mega 16/3 brushless motor for my X400 and take the Telebee gyro in the x400 and put it in the #36.


< Message edited by millewi -- 11/6/2005 12:28 AM >

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RE: Walkera Dragonfly #36 - 11/6/2005 1:43 AM   
edzinator


 

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From: san marcos, CA, USA
Status: offline 		Xcell123 I had the same troubles with my Align esc and optic6, to fix it I adjusted the sub-trim for ch3 to -20% (with stick at 0). This makes mine fire up everytime now.

i01231 I placed a photo in my galery with a gear shot of my 36, the exploded view is well not worth much to say the least, I also placed a photo of the spacers, looks to be 1, 3mm collar 1, 1.5mm thrust shim, 1, thrust bearing another 1.5mm shim, and about 2.5mm of the one way bearing or clutch above the main drive gear and finally a 1.5mm shim between the 2 gears... I have a new main gear and brg to install, since my gear has become a bit worn. I will record the placement of the shaft and assembly for you soon.



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RE: Walkera Dragonfly #36 - 11/6/2005 1:47 AM   
edzinator


 

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Status: offline 		some post photos

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RE: Walkera Dragonfly #36 - 11/6/2005 2:01 AM   
Tiger27


 

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From: , AUSTRALIA
Status: offline 		Lothar, as i remember it from the last time I stripped it down the maingear is held by the top bearings (#47) being held in place by the frame, my main gear doesnt move up and down at all, might be worth stripping down and checking there is no breakage or wear at that section of the frame.
There is a fix here somewhere which might help, it involves moving the elevator arm over to the other side and putting a shogun ball link onto the triangle peice.
Definately no part #41 on my heli though.

< Message edited by Tiger27 -- 11/6/2005 2:03 AM >

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RE: Walkera Dragonfly #36 - 11/6/2005 4:23 AM   
edzinator


 

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From: san marcos, CA, USA
Status: offline 		Ok, here is what I do on mine... as your looking at your gyro (as in the picture) the small switch arrowed in my shot, slide it to rear. Then I'll Hover my heli and slide the servo position to get hover close. Tighten the servo mounts, move the switch to the forward position and mine flies well. I think TheCheat has a great setup post!



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RE: Walkera Dragonfly #36 - 11/6/2005 6:03 AM   
DDrogon



Posts: 159
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From: chilliwack, BC, CANADA
Status: offline 		edzinator....I just saw what you said about adjusting hover pitch for the tale, very good I love the idea. I'm using a computerized radio with mine so I was just going to electronically dial in.... your idea is great.I haven't even left the ground yet because no Gyro mine was no good along with one servo.,and now I have a question ...what about that tracking,when I bring the collective pitch near 0° the tracking will change from when I'm running it at that say 5or 6° positive.it's not consistent like my big Nitro Xcell...does anybody else experience this tracking error when changing pitch.plus I don't have much to adjust ,just the Bell mixer arms to the main grips.anybody have a tip for this...I guess it's not that bad if I ever get it in the air I'll usually be in positive pitch anyway...but it's a pet peeve. ...my rotor is the one that does not have all ball hoop links...thanks a lot...see my profile gallery oh and by the way if sometimes my text sounds crazy I'm using Dragon dictation version 7 I'm not typing anything it's doing everything for me and sometimes I don't proofread very good....thanks guys ...Clint out

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RE: Walkera Dragonfly #36 - 11/6/2005 8:28 AM   
Mikey-Flies


 

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From: Fort Saskatchewan, AB, CANADA
Status: offline 		I picked up a gy240 gyro for the 36 today. A bazillion times better tail now. No lagging response or weird drift I love it! I haven't even flicked into heading hold yet lol. A also fixed the excessive play in the main shaft today. You know the plastic clips meant for bread-bags? I carved one roundish and slightly rounded the intake side so it would have to bend much to clip onto the main shaft. I then carefull separated the gears slightly (taking care to keep the bearings together with their casings) and slid it in between and cliped it onto the main shaft. Bingo! Control is now rock solid and I'm very happy.

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RE: Walkera Dragonfly #36 - 11/6/2005 12:20 PM   
Terry B


 

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From: Armidale, AUSTRALIA
Status: offline 		Dear All
I finally got my 36 flying well with a new lipo but sadly got caught by a gust of wind and it landed rotors first. This is not good!! Quite a bit is bent but it is fixable.
As an aside any idea what this heli is?
http://cgi.ebay.com.au/NEW-DRAGONFLY-Z-400-6-CH-HELICOPTER- RADIO -CONTROL-3D_W0QQitemZ6009732776QQcategoryZ110026QQrdZ1QQcmdZViewItem
I wonder if it is just a 35 or is it really a x400 clone?

Terry B

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RE: Walkera Dragonfly #36 - 11/6/2005 1:57 PM   
Tiger27


 

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From: , AUSTRALIA
Status: offline 		Not sure but it sure looks like a Shogun copy, it has the tail shaft I see.

Dont think I will ever get a heli that doesnt have belt drive its saved me a lot of repairs already, Ive landed mine numerous times in the weeds and even though the tail has been jammed it still works a treat.

Im finding the 36 a very tough beast had a mate over today and after a few ales brought the heli out, gave it a quick balance and tune and looked at the swash from one angle and it was spot on so I took off, the heli swerved sharply to the left and plowed straight into the swimming pool safety fence, at full speed. Luckily although it looked pretty severe all that happened was I lost a few mm off the end of my Align woodies, no other damage amazingly. after picking up the heli I noticed that from a different view the swash was way off centre, lesson learned dont trim out the heli after a few beers , thankfully I actually enjoy the challenge of repairing these things.

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RE: Walkera Dragonfly #36 - 11/7/2005 12:02 AM   
jascamera


 

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From: , IN, USA
Status: offline 		Hey, GUys

I finally got my W36 flying great. The past week, I have about ten 15 minute hover time with out any problem. I putted on a Align ESC slove all my glitch problem. with the walker ESC have a glitch every now and then and burned out in two weeks. I suggest that an align ESC is much better, it actually filter's out noise. And soft start. The ESC is very cool after every flight, quite amazing compare to the Walkera ESC.

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