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All Forums >> RC Helicopters >> Electric RC Helis >> Walkera Helis - Dragonfly, etc.. >> Need Help w/22e motor issue, please
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Need Help w/22e motor issue, please - 8/25/2008 6:38:33 PM   
SkipT


 

Posts: 5
Joined: 8/7/2008
From: Essex Junction, VT, USA
Status: offline 		Hi,

I am completely new to all of this, and bought a Walkera 22E because it seemed like a good idea at the time. Naturally, I've been dealing with minor crash issues, but this one has me baffled.

While hovering my main motor quit. So, after determining that it was, indeed, a burned out brush, I ordered new parts which arrived today. I put in the new motor, plugged everything in, and was quite surprised when the motor (and blades, of course!), immediately spun up to full speed with the throttle off! I looked over everything and it seemed to be wired properly, so I replaced the motor with another new one and the same thing happened. Now I suspect the mixer to be bad, but how do I determine this? I don't want to be just replacing parts without knowing they are, indeed, bad. This "cheap" heli is costing more than it is worth...


Thanks in advance for any help you folks can offer.

Skip
       Post #: 1

RE: Need Help w/22e motor issue, please - 8/25/2008 10:21:37 PM   
Tommyjoking


 

Posts: 217
Joined: 8/5/2006
From: Beebe, AR, USA
Status: offline 		Sounds like your motor shorted and fried your mosfet in your 4n1 ....this has happend to me as well...best solution is to run a fuse setup between your motor and RX ...Automotive blade type fuses 7.5 amp work good on the main motor ...I think a 2.5 or 3 amp on the tail.

I have heard people say they have replaced the mosfet in the 22e 4n1 but I have not found a direct (spec for spec) replacement yet...mosfets are cheap ($.50 to $2) if you have a buddy at a real electronics shop who could help you out. Other then that I rekon you need a new 4n1 RX which can be had for $30-$40

Regards
Tommy

(in reply to SkipT)
       Post #: 2

RE: Need Help w/22e motor issue, please - 8/26/2008 1:12:24 AM   
SkipT


 

Posts: 5
Joined: 8/7/2008
From: Essex Junction, VT, USA
Status: offline 		Thanks, TommyJoking. I was afraid of something like that. Another week goes by now waiting for parts. There are just no hobby stores with any real inventory here in Vermont.

Maybe this hobby isn't right for me?

I really appreciate the reply. Happy Flying!

Skip

(in reply to Tommyjoking)
       Post #: 3

RE: Need Help w/22e motor issue, please - 8/26/2008 1:10:43 PM   
Tommyjoking


 

Posts: 217
Joined: 8/5/2006
From: Beebe, AR, USA
Status: offline 		SkipT its a difficult hobby to get into by yourself....easy to spend lots of money and crash/spend/crashspendcrashend. If you got no one local to help out, do lots of reading here. The "Walkera 22E Lets talk" thread has a huge amount of info on what's what with that particular model...lots of friendly guys flying them ready to help to0.

Not to put you off but you happened to pick one of the hardest helis to learn to fly on...The 22e is super twitchy and difficult to master...and can have issues with motors and RX like you have discovered. Secondly the 22 is what is called a CCPM (cyclic colective pitch mixing) model or a CP type heli which are better for intermediate flyers to work with. Not to say you cannot start out on one, but it will take patience and a lot of learning. I started out on a 22e and about $400 later I could halfway fly it ok. It can get frustrating. Fixed pitch helis get altitude by speeding up the rotor instead of varying the pitch..and generally are much easier to work on, fly and cheaper to fix. Even better you might want to consider a coaxial heli (dual rotor blades) like an ESKY LAMA. They are extremely forgiving, fun, quite durable and cheap to fly. You could easily find a LAMA v3 for under $70 rTF. That would get you flying easily and a few cheap mods to them make em almost industructable LOL!

I would not say give up...but maybe do some reading and asking questions and consider a different heli to start out on and save that 22e for later.

Regards
Tommy


(in reply to SkipT)
       Post #: 4

RE: Need Help w/22e motor issue, please - 8/26/2008 2:02:46 PM   
dodgemcopter


 

Posts: 59
Joined: 5/9/2008
From: adelaide, AUSTRALIA
Status: offline 		I don't mean this to be a walkera is sh*t type thread but goin to dribble it out anyways This is the very last thing that happened to my 22e before I adopted it out, to get it going again I just used a esky brushed esc ($15 instead of $40). I only ever gave it a quick hover before risking more probs and back in its box it went, some say I was defeated by a complex heli but I beg to differ. After ridding myself of its pain and buying, all be it still cheap, other brands I now find my self flying 4 other heli's without a wisker of trouble.....one of them being a mini titan se. 75% of my troubles with the 22e was without a doubt pilot error due to the learning....25% was plain and simple quality issues, never the less it was a 100% failure rate To those who endure and persavere its traits, my hats off to ya But in the four or so months since replacing it with a "more suitable to my learning curves" the dispair was wiped from my face.

Spend your parts money on something a little more durable, even the FP #4 or a 4#1 are more robust in the tip over or crash/hard/wobbly landing department, and I have litraly worn out a 4#1 before any part was replaced (it now has a dead 4in1, funny that ) then progressed onto another brand. Skip, I can see your view, as it was also mine.....I just got sick of fixing/flying/fixing/flying/fixingfixingfixing I made a choice, I ended up buying 5 more heli's with the same funds I was sure to spend on the 22e if I had of kept going the way I was, I still fly 4 of them....at any given time and without the need to replace the main motor, the tail motor or put up with dicky tx's, twitching servo's or a busted bit every time I didn't land on tissue paper ......the 22e does fly....eventualy and Im sure if I tackled it again I could give it a better run but I bet I'll still swear at it take Tommy's advise and stick it on the shelf, get something better/easier to learn on and then give the 22e another go.......or it will drive you freaking mental

I'll give ya a hint on what kind of heli to get, look at forums and go with ones that have the least amount of posts................thats because thier out having fun and not workin out what to do

(in reply to Tommyjoking)
       Post #: 5

RE: Need Help w/22e motor issue, please - 8/26/2008 2:02:54 PM   
SkipT


 

Posts: 5
Joined: 8/7/2008
From: Essex Junction, VT, USA
Status: offline 		Hi, Tommy,

I welcome the advice, and have actually considered a coax, but really want to learn the ccpm 'copters! I am fascinated by "real" helis, and by the technology that makes them work. My past sports/hobbies have included aviation (Class 3 Hang Glider pilot, Cessna 120 time, skydiver), and I love the whole world of flight. Unfortunately, age and injuries keep me ground-bound, so I'm guess I'm trying to get some of the thrill back, and I was wondering if the coax helis would just be too easy, like "toys."

There are some videos on YouTube showing test stands, so I built one, and have a simulator. I've also done pretty well in getting the 22e hovering, even in light wind. This motor/rx blowout happened during a low hover in my driveway. Good thing it was a LOW hover! Regardless, I felt like throwing the pitch to max might have saved me some damage. What happens with helis with no pitch control?

Thanks again, and I'm sure we'll be chating again!

Best regards from Vermont,

Skip

(in reply to Tommyjoking)
       Post #: 6

RE: Need Help w/22e motor issue, please - 8/26/2008 2:10:35 PM   
SkipT


 

Posts: 5
Joined: 8/7/2008
From: Essex Junction, VT, USA
Status: offline 		Hey, Dodgemcopter,

Thanks for the response! All help is greatly appreciated. I'm going to take a few days to digest all of this and then decide what to do. My thoughts, previous to this last failure, was to get a Blade 400. It seems to be getting decent reviews, and comes with a radio that can be used for other things.

We'll see...

Give my regards to all of OZ! I haven't been there for about 15 years, and of all the countries I visited on business it is by far my favorite place to be away from home.

Skip

(in reply to SkipT)
       Post #: 7

RE: Need Help w/22e motor issue, please - 8/26/2008 7:45:42 PM   
cenracer1


 

Posts: 1445
Joined: 10/29/2004
From: hackettstown, NJ, USA
Status: offline 		Skip.. all good advice given and the Helis isn't all that bad.. quality issues, sure but not any worse than alot of the other less expensive ones out there.. Mine as well as many others have been flying very well for a long time now.. I liked it so much I bought a 2nd one for my son to learn on.. Unfortunately, this is a small heli and very twitchy.. Its designed for 3D flight which doesn't help the beginner pilot unless they have an instructor/friend to help.. When I was teaching my son to fly, he listened to what I told him about the quirks of flight and thankfully hasn't had any major crashes yet..
IMO learning to fly a coax heli is really a waste of time if you are planning to stick to this hobby.. they are too easy to fly and really don't offer a realistic flying experience.. The fixed pitch are a good way to go as they perform similar to the ccpm birds... I see you have a sim, which is a great way to train all the time without costing a ton of money.. remember.. Setup is the key.. if the heli isn't setup properly, your flights will be miserable..

_____________________________

If it has wheels... I'll make it fly

(in reply to SkipT)
       Post #: 8

RE: Need Help w/22e motor issue, please - 8/27/2008 1:28:59 AM   
SkipT


 

Posts: 5
Joined: 8/7/2008
From: Essex Junction, VT, USA
Status: offline 		Thanks, Cenracer. I felt the same about the coax helis. It seems to me that spending a lot of time flying them might be fun, but not quite the educational experience I need.

Gonna get a new 4 in 1 and take the advice to put a fuse in the link to the motor. In the few weeks I've been working at this there has been progress, so da*n the torpedoes, full speed ahead!!

I think I'm going to like this forum.

Skip

(in reply to cenracer1)
       Post #: 9

RE: Need Help w/22e motor issue, please - 8/27/2008 3:34:37 AM   
cenracer1


 

Posts: 1445
Joined: 10/29/2004
From: hackettstown, NJ, USA
Status: offline 		Skip.. glad to hear you are sticking with it.. I haven't done the conversion, but its engrained in my and my sons mind to kill the power when a crash is inevitable... You will find that over time, the heli gets easier to fly and you suddenly realize that your not constantly repairing the heli.. in fact, I haven't had to fix anything in weeks.. much better that way...

_____________________________

If it has wheels... I'll make it fly

(in reply to SkipT)
       Post #: 10

RE: Need Help w/22e motor issue, please - 8/27/2008 2:06:38 PM   
Tommyjoking


 

Posts: 217
Joined: 8/5/2006
From: Beebe, AR, USA
Status: offline 		Cenracer you got way more flights on yours then I do....but I do highly recommend the fuse thing....Two of my 4n1 were lost due to the motor failing in flight without any warning (other then abrupt power loss) and dead shorting, both times I was close to the ground and set it down without crashing. As too the size of the fuse a 7.5 should be ok BUT I would run a couple of batts out in low hovers to make sure.....or load the motor really well with the skids in your hands for a minute or two.

I am going to try dodgemcopters method of repair on my 22 with that esky brushed controller I got sitting in the box. a soldering I go..... wish me luck

(in reply to cenracer1)
       Post #: 11

RE: Need Help w/22e motor issue, please - 8/27/2008 2:10:44 PM   
cenracer1


 

Posts: 1445
Joined: 10/29/2004
From: hackettstown, NJ, USA
Status: offline 		I know but I am lazy.. I think that will be the next mod.. or just go brushless...LOL

_____________________________

If it has wheels... I'll make it fly

(in reply to Tommyjoking)
       Post #: 12

RE: Need Help w/22e motor issue, please - 8/28/2008 10:07:33 PM   
dodgemcopter


 

Posts: 59
Joined: 5/9/2008
From: adelaide, AUSTRALIA
Status: offline 		[image][img=http://img156.imageshack.us/img156/463/helicopter007ok1.th.jpg][/image]

No Idea if the link above worked but this is where I stuck it (best pic I could find), can't even recall exactly how i did it but it solved the prob. When mine pooped itself I was in the air.......imagine my surprise when I dropped throttle and it stayed flat out landed with pitch and had to try and reach under it to disconnect batt then every time I reconnected it just spun up As I said erlier, I set this up for one last hover to sell so I don't know how long it would've lasted.

(in reply to cenracer1)
       Post #: 13

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