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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/16/2005 5:19 PM   
bhermer


 

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From: Paignton, UNITED KINGDOM
Status: offline 		Here Here, I agree, these are a great deal as long as you examine them carefully and ignore the RTF label! Ready to fly after a good half an hour with a jewlers screwdriver kit and you can't go far wrong!

The Servos chatter on mine too, and I upgraded the servos to some 9g GWS and most of it went away! Still chatters sometimes when the TX batteries are a bit low, I have had better luck charging the batteries out of the TX and ensuring they are fully charged as the battery gauge on the Walkera TX's is pretty lousy!

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/16/2005 10:18 PM   
OperaGhost


 

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From: Bovine, MT, USA
Status: offline 		i also have had servo problems with my 35. i replaced mine with hitech servos.
i would strongly advise anyone with a servo twitch or chatter, to resolve the issue before attempting to fly.
if the servo twitches at the wrong moment when you have a lot of power applied, you will crash.
...ask me how i know... lol

heres how we test for a bad servo (in the case of chatter). find a servo that is nice and stable, and swap the channel between the good servo and the bad servo. if the chatter follows the servo, its a bad servo. if the chatter stays on the same channel (ergo, the good servo is now chattering) then its a problem with the wiring on that channel, or a receiver problem. note: this is not factory advice, just something we came up with! if it doesnt make sense, please point it out, as we try to help, not give out bad info!

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/18/2005 12:28 AM   
noj


 

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Status: offline 		Hi - I'm a total heli newbee ... have a plane but never learned to fly it (crashed 6 times) .. well I was bored at work 2 weeks ago.. so I just bought a Walkera 35 ... received it today... The manual doesn't tell anything about how to adjust the Gyro or the switches on the back of the transmitter.. anyone has some informative links on getting started... maybe on the level of basic heli terms ect... the transceiver system is 6 ch... anyone knows what the 2 potentiometers and switches are for ??.. the manual is in english but the layout of the motor control curves sucks... can anyone explain or give links to what I need to know to (well maybe not fly) - at least not crash big time... What is the difference between the walkera gyro and the "better" onces from HobbyJanpan ?? I think I ordered the "medium" one - but got a walkera ... // BR - DK-heli-noob

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/18/2005 5:25 AM   
cptsnoopy


 

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Status: offline 		hi noj,

this is just a suggestion from a newbee too. If you have not played with helicopters before at all you really should find someone that is familiar with them to look over your heli before you fly it for the first time. and of course while this person is doing that get all the info from them you can about getting started. you should have this person fly the heli and verify that it is in trim and ready for your to try it out for the first time. i would very very strongly recommend getting several hours on the sim, well past the point of wanting to try the heli before you give it a go. unless however you have plenty of extra cash for parts. as far as the switches on the back of the transmitter. if they are the same as mine they are servo reversing switches. if the one for your throttle is in the wrong position and you plug the battery in for your heli it may be at full throttle when you set the transmitter control for idle. this has been reported several times with these helis. also your transmitter may be set up for a strange mode. if you decide to give it a try be sure to be holding the heli in such a way when you plug in the battery that even if it goes full throttle it cannot take off or hurt you. this is another time when an experienced helper/teacher would come in very handy. on my 22D gyro there was a limit and delay pot. the limit was how much the servo moved for a given amount of heading change and the delay was how long after the heading change the servo started the move towards a correction in heading. if the delay was too short (or too long, i don't remember which...) the heli would shake its tail back and forth rapidly. i have read that you want to start with around 90 on each of the to pots and then start by decreasing the delay until the tail stopped wagging rapidly. then i am not sure about the limit part. someone with some real experience will probably chime in and give you the real how to for the gyro. have fun and be safe!





< Message edited by cptsnoopy -- 3/18/2005 6:06 AM >

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/18/2005 9:41 AM   
OperaGhost


 

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Status: offline 		whoa, lol, thats a lot of fixing. let me try to help out.
there is no documentation, not that we have seen from 4 walkera products. in fact, you are luck to have gotten a manual in english!
hobbyjapan STINKS!!!! i would strongly advise that you not order from them. try helihobby instead, we have had pretty good luck with them
so far.

if your radio is same as ours, and i suspect it is, the switch at the top right is your 3d switch. you will want that in the up position. the pots serve no purpose that we have found so far. this is the same as the 22a, any purpose of those pots is a mystery to us.

we STRONGLY recommend that you go over the heli first, and this applies to any heli, any manufacturer. Look for loose screws/wires, check radio, etc.

update for all as to who "we" are. we are contemplating starting a business. it would be comprised of myself, my brother in law, and a friend of ours. i am a full scale pilot with little RC experience. My brother in law has a lot more common sense than me, and our friend has a ton of RC experience, although not with helis.

In our short sojourn with electric helis we have amassed a fleet of six helicopters, 4 of which are walkera products.

we have quite a lot of practice with repair and parts aquisition, not by intent, lol.

while so far, we stand behind walkera, that may change soon. hobbyjapan2000 is NOT recommended by any means, and walkera is working themselves into that range.

given the state of expansion of the hobby, and how much fun it is, and how poor almost all customer support is-we think of starting our own company. we wish to stock parts and advice and provide customer service, which is SORELY lacking. since we are not rich, we will probably have to endorse only one make of heli. though we have substantial experience with the walkeras, it seems probable that we will not be able to give our endorsement to them.

email haudy@haudy.com at walkera with your thoughts, as they have declined to respond to us.

for all of your help and support (even yours, chronus!) many thanks, and we will continue to try to help.

in return, i would like to ask you of your thoughts regarding our possible business venture.

PS: i receive 5 to 10 emails daily regarding the 35, my "copilot' gets around 10 a day. we plan soon to start our venture under the name "helighost.com"-it will greatly simplify our ability to go over requests and reviews, and also allow us to pool our knowledge much better than with the current system.

it is with great chagrin (tho no shame) that i can no longer recommend walkera products. we are now left to salvage the messes we paid for. its a fine enough heli, when you get it to work, however, that is a steep hill to climb. your thoughts on this are both welcomed as well as solicited. please leave the "its crap" comments out, only constructive comments are listened to. the rest we have a good laugh at.

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/18/2005 9:51 AM   
bhermer


 

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Status: offline 		Noj,

The two pots on the top are for the power/pitch curve adjustment. Out of the box you should not have to touch these, but when you have been flying for a whiel you may find the heli doesn't have much lift, or too much these are where you adjust it,

To enable them you switch the number 8 dip switch on the back of the controller, then increasing them will increase thye pitch angle in relation to the throttle position, after adjustment you should MOVE 8 BACK TO LOCK. As I SAY if your heli flys ok, dont adjust.

Also if you are learning I advice you leave the heli in normal mode, (silver switch at the top right), if you put it into CP mode (silver switch down) then the head will spin at full speed and the 'throttle' will just control positiv and negative pitch, in the mode the heli becomes dangerously responsinve in a novice had, and if you have trouble you will hit the ground with the head in full throttle, which at best will turn the rotor head into lots of little bit, or worse turn it into bits AND destroy your RX with the feedback surge (Or even worse hit someone!!, Remember always fly them away from people, and get some third party insurance just in case!)

As for gyros, to get the best from them, turn on TX, check everything is in the right position, throttle done, flight mode is normal (Your heli wont initialize the throttle if it isn't at zero, but best not to test this too much!! ) Plug the heli in and leave it for five minutes, this will allow the gyro to get its bearings, and to come up to temprature, the solid state gyros are sensitive to temprature. By doing this yoiu will find the heli head holds far better!!

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/18/2005 9:58 AM   
cptsnoopy


 

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Status: offline 		sounds like a good idea for a business. the need is definitely there right now. I just wanted to add a comment about the walkera servo's. this has been said before so i am just adding one more experience. I had previously replaced the servo's on my walkera4 and it stopped chattering and was more stable to fly. I did not wait for the servo's on my 22d to fail as i replaced them all tonight with GWS servo's. no more chattering and the heli is much more stable... cheers!

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/18/2005 9:58 AM   
bhermer


 

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Status: offline 		OperaGhost,

Just to let you know, I to have started a business selling heli's, what I am doing is buying the Walkera heli's and going over them with a fine tooth comb before selling, as well as providing a manual we have written, a Flight trainer manual for each of the heli's, and providing first class customer support (which as you say is very lacking) The walkera designs are good (because they ripped them off of companies like GWS etc) but the build quality is bad, hence the fact we are 'bring up the standard, and making it as safe!'

Also we (my busness partners and I ) are developing some interesting electronic wizardry to enhance performance, battery life and most importantly saftey. We are currently at the R&D stage with alot of it, but are going into Alpha soon, so if you are interested in a discussion at some point PM me and maybe we can talk??

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/18/2005 10:21 AM   
OperaGhost


 

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Status: offline 		am i double posting, lol?

ben, email me.

sorry if its a double post. i havent played my drums yet today, and im not gonna fly the heli, for reasons i wont post publicly, lol.

get in touch, ben

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/18/2005 10:23 AM   
OperaGhost


 

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Status: offline 		walkera servos are poor at best. my recommendation is hitech servos. good support, great servo, price is fair, to say the least.

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/18/2005 2:01 PM   
noj


 

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Status: offline 		bhermer & OperaGhost

Thanks a lot for some usefull information... I don't understand why the manual didn't explain what you just did...
Maybe they don't expect newbees to buy a helicopter before talking to a pro...

Have anyone tried to make a battery-pack from Nokia BL-4C 3.7 volt Li-Ion batteries ?? (3*3,7v = 11.1 volt (700mAh) or 3*3,7v || 3*3,7v = 11,1 volt (1400 mAh)...
I know it's not the solution for price - but I have lots and lots of those batts... so I just wonder if they can deliver enough power...

What is the differece between LI-Polymer and LI-Ion ?? can they be charged with the same charger ?

What is the typical powerconsumption of the standard #35 motor ??

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/18/2005 2:08 PM   
bhermer


 

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Status: offline 		The main difference is that Li Polymer is a more stable material, li ion is in liquid form and can explode on high impact!! I would suggest you don't use them for RC if you are making the packs yourself. You can get pretty cheap LiPo batteries, just make sure you get a charger that has voltage cut off, and never charge un-attended.

I am using a 11.1V 1900mAh pack in my 35 and it last for about 12-15 mins.

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter ... - 3/18/2005 8:06 PM   
cptsnoopy


 

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quote:

ORIGINAL: Raptor50se

Hi, I put wood blades on my Walkera Dragonfly 4ch heli and it flies heaps better. Outdoor flying is possible upto about 15 knot winds.


which blades did you use? is it a bolt on mod or did you have to do some modifications to the blades or hub? thx


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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/19/2005 12:29 AM   
noj


 

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Status: offline 		Hey- Am I still a heli noob now that i have 15 minutes of "engine-on-helo-on-ground-time" ... ... ohhh yes - big time noob ... Smashed one rotor blade when some plastic box got sucked up from the table .... Now I have a slight feeling what the controls are actually doing but still a lot of things seems quite confusing....

My logic sense tells me it's easier to understand the helo-control when all this servo mixing stuff is turned off.... If I put it to "normal-mode" (this means the mixing is on - right ?) at least 2 servos are moving when I move one controlstick !! This makes it difficult to figure out if it's right or not.... if I turn it into CP mode only on servo moves when I move one controlstick ... this seems logic to me... (Am I wrong)..

Can anyone explain how the mixing works ??

My controls are set up like this (I guess this is only the case when the Flightmode switch is UP=normal) :

Tx-Left [up/down stick]: Helo-pitch = Rx-ext. [CH1]
Tx-Left [right/left stick]: Tail Rotor = Rx-ext. [CH4]
Tx-Left Switch: "unknown" = ?
Tx-Left Pot.: "unknown" = ?

Tx-Right [up/down stick]: Motor Speed = Rx-int. ?
Tx-Right [right/left stick]: Helo-Roll = Rx-ext.[CH2]
Tx-Right Switch: Flightmode = Rx-int. ?
Tx-Right Pot.: Collective Pitch = Rx-ext. [CH6]

Does this seem Ok - can anyone fill in the blanks...

I must say I was surpised how powerfull that thing was .... I managed to switch in into "not-normal" flightmode ...... and had to pull the plug ... if I hadn't attached it to the ground it would have gone balistic....

Br - Noj





< Message edited by noj -- 3/19/2005 12:34 AM >

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter R... - 3/19/2005 2:34 AM   
OperaGhost


 

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Status: offline 		those pots are still undetermined, lol. look at more of the posts on this thread. Bhermer has made some good progress as to those pots. we cannot yet find a purpose for them.

if the heli went MENTAL, you prolly had it in 3d mode. should be the left hand toggle switch. put it in upright position. thats normal mode.

i assume you mean about the DIP switches on the back of the xmitter. for now, i would leave them at factory settings. we are gonna put a guide up within the next week.

do NOT try to turn off the CCPM. we tried it, it doesnt work, it has a speed mixer, and without that CCPM ON, you will have a 300 dollar wreck, ;p

you seem to have had common sense, so far, lol. as in keeping the heli on the ground for run up. stay with that. check for EVERYTHING.
twitchy servos. bad connections. loose pins in connectors, etc.

it sounds like you are doing well, just go slow.

your xmitter is correct mode (for us north americans, anyway) mine is 'goofy foot'
i actually like it that way, but im not quite normal either.

i would set trims to middle, and adjust from there-but NOTE! as you increase power, tail rotor for example with have more authority.

go slow and easy. its a fine heli, but walkera unfortunately is not a fine manufacturer.

we are on our own to salvage the junk walkera sold us.

Ghosty1@gmail.com

im no expert, but will try to help as best i can.

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/19/2005 6:46 AM   
OperaGhost


 

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Status: offline 		also dont forget about the simple things, such as mounting the battery, CG, etc. I would be very careful with the lipos-they work very well, but watch a vid or two about the hazards. and if it even LOOKS goofy dont use it. they can, and do blow up. the only reason we have not blown one up yet, is cuz of forums like this!

most of the chargers supplied (esp from manufacturers like walkera) will include no documentation. in fact, they have sent two bad batteries so far-we will not order from them again........anyway, we do this.....

there is only a red/green lite on the charger. ignore it.

use a switch, bhermer or helighost can tell you where to get, rig it up, and how.......

when you add throttle, and the heli seems to go dead, it is. the battery is dying. its time to charge

I only charge mine about 30-40 minutes (really shouldnt take this long, and it probably doesnt, just talking what ive seen and done)

we put the batteries in a metal tool kit while they charge, in case they go nuts. safer that way.

for the power available and the size/weight of a lipo, i wont go any other way.

my dremel tool has a lipo batt and charger, and i can leave the batt on that for a week straight. i just dont trust walkera that much. be careful!

i would not mess about with "rigging" lipo batteries, just too dangerous. we have several adjustable rate chargers. we use none on lipo batts. too scary.

they dont just get hot, they freaking EXPLODE. there are lots of stories about them. read em, and learn, lol.

Happy Flying!

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/19/2005 10:30 AM   
noj


 

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Thx for your help ... it's much appreciated...

Actually i'm having problems charging my battery ... Charger says "green" - but only about 9.2 - 10.2 volts and no power on the batt... Charger seems to work ... if I load it with a power-resistor the ligth turns red and resistor gets warm .... So I guess it's yet another faulty Batt.

Noj



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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/19/2005 11:15 AM   
rich_hodgetts


 

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Status: offline 		I have a Dragonfly 22A which has the same transmitter as the 35. Both of the pots (pzt and plt) seemed to do nothing at first. I tried experimeting with the DIP switches I ended up cycling them all and returning them to how they came. Now the pzt pot adjusts the ptch of the blades at zero collective. This is quite interesting as it allows easy adjustment to get them to zero degrees and it also allows the head speed to be slowed right down to make the thing fly almost like a FP machine (lift off before collective actually starts to increase - this happens at about half throttle on mine). I am still investigating the plt pot.

Rich

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/19/2005 11:22 AM   
rich_hodgetts


 

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Status: offline 		And the PLT pot adjutsts the collective travel from zero all the way up to quite a high pitch (I have not mesured this). I don't know how but I must have enabled these functions because orginally they did nothing! As a side note I did open up the TX for a look and I disconnected and reconnected the main connector inside, maybe I had a poorly seated connector.

Rich

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/19/2005 1:05 PM   
bhermer


 

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quote:

ORIGINAL: rich_hodgetts

And the PLT pot adjutsts the collective travel from zero all the way up to quite a high pitch (I have not mesured this). I don't know how but I must have enabled these functions because orginally they did nothing! As a side note I did open up the TX for a look and I disconnected and reconnected the main connector inside, maybe I had a poorly seated connector.

Rich


Hi Rich,

You probaby have channel 8 switched on on the back of your TX.

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/22/2005 11:10 AM   
OperaGhost


 

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Status: offline 		actually, the TX for the 22 and the 35 are not the same.

we have two 35s and one 22a. the 22a has an 8 switch DIP in the xmitter, whereas the 35 has a 10 switch DIP. thats just ours anyway, when dealing with walkera, one never knows....

the helicopter can be made to fly, nicely in fact. but if you made the mistake that i did (spending money on walkera junk) be prepared for a lot of work, and much expenditure to replace the defective parts they ship.

They sent me a flat out rude (I think it was meant to be rude, it was hard to tell, as the english was so poor as to be indecipherable) email in response to my concerns, also stating that they had gotten no emails from me.

I obligingly sent them a copy of the original, with the time stamp.

the 22A owner also received an email today (a week after he sent his to them haudy@haudy.com)...walkera, not concerned, suggested that he contact the seller (hobbyjapan2000)

If anyone already has one of these helis (junk) they can be made to fly. if anyone is thinking of purchasing one, i STRONGLY advise agianst it. this is a helicopter that im ashamed to own.

I dont expect that walkera will even be around in 5 years, given the incredibly low standards they have set, and met.

if you can get the site to load, its www.walkera.com. visit, its very interesting indeed. one bum heli, i can understand. 3 that i have personally seen, in accordance with others experience here at RCU, as well as the companys' response is beyond discouraging.

beware an "amy" or a "betty" as they seem to be the ones handling customer service for walkera, and its quite obvious to me that they read these forums.

listen to chronus. hes no heli god, nor am i. but i wish i had listened now. do NOT deal with walkera or with HJ2K.

sermon over. ;p

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/22/2005 11:21 AM   
bhermer


 

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Status: offline 		If you dont buy a walkera 35 or 22a (and I have to agre with some of the quality issues with Walkera, though my 35 is still flying fine) , and want a decent heli about the same size and Spec (but with a world of difference in quality), you cant go wrong with a T-REX. I have just built one up for a friend, and was pretty impressed. You should be able to get a deal if you shop around for about £350 95% RTF, or you can save money and go for a kit.

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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/22/2005 11:32 AM   
OperaGhost


 

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Status: offline 		they are terrible, bhermer.........just horrible. and im even more angry at their response.

we have gotten the servo issue resolved, finally, but im still scared to work with it too much as they sent a backwards radio, lol.

we put switches on ours, all helis.

now, it seems that the receiver is getting hot, i have no idea why. nothing but troubles with my 35, as well, my bro in law now has taken to a spin problem (he has the walkera gyro)

best thing, in my opine to do with a walkera is replace everything electronic. or be a mechanic, lol, as its JUNK and will take a LOT to get and keep flying.

i hate to down my heli, but as my experience in general and with this heli goes, its not good.

i really wish i had not purchased it....have it going now, if the receiver doesnt blow up.....which i expect it to do. VERY poor quality.



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RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/22/2005 11:35 AM   
OperaGhost


 

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Last Login: 8/7/2005
From: Bovine, MT, USA
Status: offline 		also, as to the switch issue, if you use toggle switches, you can also make it so that lights (if equipped) will come on with power, and you can put a connector in to allow you to use a diff connector to recharge the lipo.

its silly and cross brand, also, that a simple of and on switch is not placed with the heli....


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(in reply to OperaGhost)
       Post #: 74

RE: Walkera DragonFly #35 CCPM Electric RC Helicopter... - 3/22/2005 11:52 AM   
bhermer


 

Posts: 56
Score: 100
Joined: 12/25/2004
Last Login: 12/31/2005
From: Paignton, UNITED KINGDOM
Status: offline 		Hi OperaGhost, What is your prob with the T-Rex? I found the build quality to be good, the instructions were in english, and the reviews I have read are really good!! It has a 25A brushless in it and it doesn't act like it is going to shake itself to pieces (which the 35 does in CP mode with a brushless!!)

We got ours from some guys in the UK who have had nothing but good things to say :|

http://www.modelhelicopters.co.uk/acatalog/m_trex450x.htm

Even HeliHobby.com are endorsing it on there front page!!

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(in reply to OperaGhost)
       Post #: 75

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All Forums >> RC Helicopters >> Electric RC Helis >> Walkera Helis - Dragonfly, etc.. >> RE: Walkera DragonFly #35 CCPM Electric RC Helicopter Reviews
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