RE: Thecheatscalc's 36 tuning and assy  
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RE: Thecheatscalc's 36 tuning and assy - 1/15/2006 9:07:08 PM   
opjose



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From: Poolesville, MD, USA
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quote:

ORIGINAL: rcrolauk

Hello guys! Really great forum, I've just bought a #36. Had already ordered it when I read all the bad things about the Walkera #36, so I was very doubtful about the quality with this heli. Had the same problems with no lift, but I've managed getting it in the air with some fine tuning now. Guess the battery is bad (as you guys have mentioned). I have the stock brush motor, but I am going to buy a brushless motor, new gyro and li-poly batteries. Is this the one I shouldn't buy?? The same company that sold me the Walkera, also offer this type of batteries...wonder if it's from Walkera as well?


That doesn't look like a Walkera.

As long as the batteries haven't been laying around and are fresh, they should work.

I've even used lower capacity, 1300mAh for shorter duration 3D stuff to greatly lighten the heli.

You should try the #36, #35 or #22a with a 76 gram 1300mAh battery.... this gets very nice.

I haven't weighed a 1800mAh battery but I'll bet the performance is comparable.


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RE: Thecheatscalc's 36 tuning and assy - 1/15/2006 9:12:14 PM   
opjose



Posts: 5364
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: online
Tips for newbies:

GET A KITCHEN TURNTABLE!


I picked up a 12 pound granite turntable (Lazy Susan for us older guys...) for a whopping 11.00 at a kitchen supply store in a mall.

It is heavy enough to held down all of my electrics (I use small clamps although I'm considering drilling in permanent hold downs...)

That way you can fine tune the heli while it's on the table, and even run it up to see if the tail is going to wander on you.

The inertia of the granite is just large enough to dampen the quick movements just a bit, so that you are adjusting for the things.

Add to this a microheli pitch gauge and a bubble level to the turntable and you have yourself a nice "tuning station" for your birds.


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RE: Thecheatscalc's 36 tuning and assy - 1/18/2006 6:48:17 PM   
opjose



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Joined: 11/26/2005
From: Poolesville, MD, USA
Status: online

quote:

ORIGINAL: kg4izw

i am almost ready to tune my #36 for the first time, as i am a new pilot, and wanted a BASIC list of the tools I must have in order to do basic adjustments and repairs to this heli. I have about 15 hours on my preflight sim, but dont want to lift this heli off the ground without making sure I at least have a fighting chance to fly it. thanks paulb.


If you want a fighting chance of not destroying your heli, you'll have to find someone to teach you or switch to a sim with a better flight model.

Preflight is pretty bad... try G3 or Reflex.

Yeah, the costs, I know.

But it WILL pay for itself in broken parts which you will not have to replace.

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RE: Thecheatscalc's 36 tuning and assy - 1/18/2006 6:55:09 PM   
opjose



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Joined: 11/26/2005
From: Poolesville, MD, USA
Status: online
Fixing the tail shafts:

I had the need to try to fix a couple of bent tail shafts yesterday. One for a #36 and one for an #22a.

For main rotor shafts I usually use a Panavise, Vacu-Vise which has a "V" groove cutout in the head that can grip the shaft securely, by applying a LOT of force on the shaft I can usually straighten it out.


With the tail rotor shafts, this doesn't seem to work.


TINY variations in the shaft cause it to look perfectly round, but still rotate with vibration or a side to side movement... I had no luck straightening the tail shafts...


Looking for a solution to this, I tried heating the STEEL tail rotor shafts using a propane torch.

I heated the shaft until it was red hot, then inserted it into the vise, and clamped it down as tightly as possible to let it cool.

Once cool, I repeated this with the shaft rotated 90 degrees around it's own axis.

My gosh it worked!!!!

It was absolutely PERFECT after this.


Remember I tried this on the STEEL tail shaft holding the blades.





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RE: Thecheatscalc's 36 tuning and assy - 1/27/2006 11:16:20 PM   
g13b


 

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Joined: 11/30/2005
From: melbourne, AUSTRALIA
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quote:

each cell must never drop below 3.2v, and must never be charged above 4.2v, or,


How do you check this?

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RE: Thecheatscalc's 36 tuning and assy - 1/28/2006 3:30:12 PM   
rcrolauk


 

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Thank you for your reply opjose. My #36 is sitting on the ground at the moment (have done so the last two weeks) because of a defect gyro....which replacement I haven't yet received Yes, very annoying. The tail is going at full pitch when I start the chopter, and the servo keep locking itself at that position. I first thought it was the servo, but I've checked this out with another servo I know works. So - it doesn't seem to be the problem. Anyway, I've heard quite a bit about the Walkera electronics, and I expected to replace this one anyway. But - I would like to fly it while waiting for the replacement ofcourse...now it's just spinning as soon as it get's lighter on the skids.

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RE: Thecheatscalc's 36 tuning and assy - 1/28/2006 10:25:29 PM   
thecheatscalc



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hey, I'm going to do another section, I'll help you after this rcrolauk, ok?

FIXING shattered/broken frames *requires a trip to your local hardware store*

here's the part list:
1. JB kwik or JB weld, I prefer quick, it hardens MUCH faster (set time is 4 min, usable in 30min, and dried in four hours) Jb weld will work as well, it's a bit stronger and can take up to 600 degrees F instead of 300 degrees, not an issue (set time is about 10 minutes (with lightbulb within a foot of the joint) usable at four hours and hardened at 10, both types stick to magnets, especally fun with super N50 neodimum iron boron magnets ) it's just inconvenient to hold it until the glue turns to puddy.
2. a sutable CLEAN piece of 2-3mm thick plastic, preferably black or near black colored, if it's painted it's not accepable, clear and white plastic is no good either, I used the battery cover from a zip zap controler...
(yes, I'm desperate to save some bucks, ok?
3. a file, dremel, sand paper, or bench grinder
4. hands
5. a set of jewlers/ small head phillips screw drivers, jewlers are best.
6. hack saw, or bench/ band saw, bench as in one that runs off an arm that vibrates up and down real fast, NOT a circular saw!

Let's get started shall we?

you crashed hard and broke part of your frame, GET THE BROKEN PEICE!!!

notice that some of the frame is missing, it SHOULD be covering that gyro up, and holding up the servo (check your's if you don't believe me or need visual referance)

"oh gee... now I've got to get a new fr..." stop there, no, you don't. you fix, you save, you keep money till need it.

here's what you do:

step one, if this is a component where SHEAR force will be applied, instead of tension some special steps need to be taken. using the JB kwik glue the peices back together (see the picture, if you look closely you can see the joint, it's infront of where the motor wires come out of the frame)

step two, let 10 minutes elapse, while that is happening, take your peice of plastic and cut it so that it will brace the joint, roughen the surface to be glued with sand paper.

step three, take that peice and glue it down over the joint, use JB LIBERALLY and fill every gap, smush it down untill it won't go any further, wipe away excess glue, and make a nice edge around the peice like you would caulk. *note* this step can be done during the glueing of the original peices, it's MUCH harder, and the stregnth is in the glue and between the peices.

here's what it should look like, position of the peice is different depending on the break


Step one alpha, the peices glued back together are TENSION peices, this is easy, make sure no dirt is where the joint is to be, push glue into the proper place, and stick the peices back togheter, this is EASY, if the location is next to a servo, remove servo first.

here's what that looks like *note* if you couldn't find the missing peice before, you can clearly see it here, note that you CAN use the plastic to fill the gap if you lost the peice.



there you go! you've fixed the frame, remember, those skids don't glue well, the plasic is a good example of what type of plastic is NOT acceptable. JB weld is wonderful because it glues to itself just as good as anything else! so, if the joint breaks, sand off some of the glue to make space for fresh glue, and just re-glue.

congrats! you just fixed your frame, please ask questions if you need help, and, if you're stressed by your crash, take a look at the below crash, it's great for lightening up your mood.




< Message edited by thecheatscalc -- 1/28/2006 11:06:55 PM >


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RE: Thecheatscalc's 36 tuning and assy - 1/29/2006 12:42:39 AM   
Okisub



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From: Queensland, AUSTRALIA
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thats one "ghetto heli" you've got there Cheat!

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RE: Thecheatscalc's 36 tuning and assy - 2/11/2006 6:10:46 AM   
Culver10



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From: Sherwood Park, AB, CANADA
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Great thread! Thanks for all the great info. I have one on order right now.

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RE: Thecheatscalc's 36 tuning and assy - 2/11/2006 6:57:41 PM   
thecheatscalc



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okisub, heh, yeah, the frame has finally given out on me I noticed that the autorotating gear wasn't meshing properly with the belt drive, so, I haven't been able to fly it for a while (again) fortunatly I'm getting a spare frame soon, so it should be back in action depending on when the ground delievery decides to take my package from HK.

PLEASE NOTE: when fixing problems that affect gear meshes, you may have to use the JB weld THEN taking a HIGH stregnth string (those airplane tire strands are 20lb test rated by the way, quite excellent, especally when I have a huge spool of the stuff) and wrap it tightly around two parts of the frame so that it would push the joint TOGETHER, get this as tight as possible, and if the gear meshes are good, then douse the strands (should be wrapped around 10x-15x) in CA after you tie the ends off. I put the glue and didn't push the ends toghether, well well, only the gear tips were touching.

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RE: Thecheatscalc's 36 tuning and assy - 2/14/2006 5:13:44 PM   
Culver10



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I got mine yesterday and have started going through it. I pulled the receiver/speed control out of it and also the brushed motor. I will try the Walkera gyro. I was wondering if I should try the servos or yank them also? Has anyone had good luck with the Walkera servos??

Thanks!!

Phil

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RE: Thecheatscalc's 36 tuning and assy - 2/16/2006 9:43:06 PM   
thecheatscalc



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From: fayetteville, GA, USA
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I've had great luck with the walkera servos, actually, they're faster than my HS-55 feather servo! (the blue one) they'll do fine till you either strip one, of, somehow the servo driver fails, which, is really odd that it did on mine... you shouldn't need to pull them off for a good while till you get some good wrecks on your machine (and they start to malfuntion) one more thing, why did you remove the RX? was it not working, or just preference? remember that other Tx's don't work with the walkera Rx.

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RE: Thecheatscalc's 36 tuning and assy - 2/18/2006 8:47:45 AM   
ranger175rgr


 

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is there such a thing as tracking and balancing the rotor blades, and if so how? i have a 36 but it has some vibration to it. any suggestions

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