RE: Eflite stock servo question CP Pro?  
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RE: Eflite stock servo question CP Pro? - 6/3/2008 9:02:05 PM   
JPEE



Posts: 210
Joined: 3/14/2008
From: Porter Ranch in Southern Calif, CA, USA
Status: offline 		Hey Doc,

Sounds like your getting ready to Cowboy Up and go for the flip, good luck!


JPee

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CX 2, Hirobo SRB Quark
Blade 400s, #401, #402, Trojan T-28

(in reply to rotarydoc)
       Post #: 51

RE: Eflite stock servo question CP Pro? - 6/3/2008 9:13:04 PM   
rotarydoc


 

Posts: 1108
Joined: 3/17/2008
From: Laurel, MD, USA
Status: offline 		Hey JPEE,


WHO, ME ???!!! No way!! That's Nick, (evedreamer) not me!!

Heck, I can barely do one on the sim, much less in real life!!

I think Nick is close to trying one on his Belt CP...

Trying to work up the courage...

He's got more B#$%@S than I will have for quite some time if he goes for it!!

Take care,

Glenn

PS, I can do one on the sim, it's just flying around inverted that gets me every time!

(in reply to JPEE)
       Post #: 52

RE: Eflite stock servo question CP Pro? - 6/3/2008 9:34:09 PM   
evdreamer


 

Posts: 2379
Joined: 8/12/2007
From: Lincoln, NE, USA
Status: online 		Glenn,

I am struggling with going the other way in the backwards figure 8. I thought I should practice going both ways. I can visualize how it should go, but my hands mess the whole thing up in flight. I am also struggling with a left side stall turn. I think it is easy for me on the right side because there are trees over there. Then I know I am going straight up by following the trees. Then I tried doing a right spin in the air during the stall turn. I would love to do a death spiral in real life. That is were the helicopter does a 90 degree flip on the side. Then have zero pitch and go full front elevator and watch the helicopter spin and fall to the ground. Wow I am really dreaming about more than I can do. You will get the left turn down. Just keep practicing.

I like helidirect too because of the fast shipping. UShobbysupply is in the D.C. area I think and I always get stuff from them fast too.

Good to hear you had a good day at work.

I got two flights in so far on the Belt CP. I don't think I will go to the baseball field today because it is very humid out. I can barely stand the 6 minute flights I get. Then I put a new tail motor in the CPP. When I was doing a small pirouette to test the gain out I ran it into my cement step. I broke the landing gear that was super glued and I lost the carbon rod that holds the rear part of the canopy. The weather channel said it was supposed to rain yesterday and today, but it isn't too cloudy out today and didn't rain yesterday.

Nick



_____________________________

Since I started this hobby money seems to keep disappearing. :)
T-Rex 450SEV2, Gaui 200 SD

(in reply to rotarydoc)
       Post #: 53

RE: Eflite stock servo question CP Pro? - 6/3/2008 10:30:22 PM   
rotarydoc


 

Posts: 1108
Joined: 3/17/2008
From: Laurel, MD, USA
Status: offline 		Hey Nick,

I was just sitting here, getting ready to bring the CPP in for a test flight, and was thinking about direct drive tail motors, and the new CPP2. Didn't you say you tried a DD motor setup on your CPP, but didn't like it? I was wondering why it didn't work out? Maybe I already asked you, but forgot? What brand was it?

The last couple of flights outside, even before the main motor (?) issue, the tail was really buggin' me, the way it keeps flipping out to the right (nose left)....which indicates it's losing tail rotor speed. I have a new motor, if I get the main motor issue solved, I may try the new tail motor and see how it goes. This thing that it does is not really a "wag", it lasts longer than that, it actually puts the tail out to the right a good 45 degrees, and I have to correct for it. Have you ever come across this?

I'll see how it does here in a little bit with the newer motor.

Sorry to hear about the crash into the steps, sounds pretty minor, glad you didn't get the blades/rotor head...

Talk to you,

Glenn

(in reply to evdreamer)
       Post #: 54

RE: Eflite stock servo question CP Pro? - 6/3/2008 10:47:01 PM   
evdreamer


 

Posts: 2379
Joined: 8/12/2007
From: Lincoln, NE, USA
Status: online 		Glenn,

I never got to use the DD motor because I had no screws for it. It was by GWS. I heard a few other people were using them so I thought I would give it a try. Now I am just going to wait for the E-flite DD motor to come out. And I am curious if the new main motor for the CPP2 is any better than the one for the CPP.

The tail never holds for me like the belt driven tail. I fly it slow and scale like so the tail is easier to control. But if I try to fly it like my Belt CP it will swing all over the place. The CPP doesn't like backwards flight without a gyro. I am always giving rudder input to keep it in one spot.

Yeah the crash was minor. Some how the old super glue stuck it self together again, so the landing struts are fine again. I just need that carbon rod to attach the canopy. Or I could fly without the canopy, but if I get in a crash the electronics are more exposed.

Hope you get some fun flights in today.

Nick

_____________________________

Since I started this hobby money seems to keep disappearing. :)
T-Rex 450SEV2, Gaui 200 SD

(in reply to rotarydoc)
       Post #: 55

RE: Eflite stock servo question CP Pro? - 6/4/2008 2:15:19 AM   
evdreamer


 

Posts: 2379
Joined: 8/12/2007
From: Lincoln, NE, USA
Status: online 		Glenn,

I went out to my local flying field today and had a blast. Most of them fly airplanes, but were a great bunch of people. I got to take the trainer up on a buddy box and did back flips and rolls. If flipping is as easy on a helicopter as it was on a airplane I am going to have a lot of fun. Since it was a nitro the flight lasted a long time. Then before my flight a guy's elevator fell off in mid flight and the airplane made a nice thud. A lot of dirt came up from the crash. Then there were a couple of people doing mild 3D on their airplanes. That was amazing!

Nick

_____________________________

Since I started this hobby money seems to keep disappearing. :)
T-Rex 450SEV2, Gaui 200 SD

(in reply to rotarydoc)
       Post #: 56

RE: Eflite stock servo question CP Pro? - 6/4/2008 5:04:39 AM   
rotarydoc


 

Posts: 1108
Joined: 3/17/2008
From: Laurel, MD, USA
Status: offline 		Hey Nick,

Sounds like you did have a blast! Good for you! Glad you got to meet some people and got to fly a plane, sounds like it was fun!

Glad the damage to the CPP was minimal...

I got to fly today for about 2 minutes. I realized right away that it was not the motor at all. While I was flying I realized that it would lose altitude only with right aileron. I got it back to the bench, and thought I found the problem. The servo arms had a lot of play in them, like in the geartrain of the servos. So, I packed it all up, and went home with it.

Got it all apart, I had new gearsets already, from when I ordered 4 sets. I put in the new gearsets, and something went way wrong with one of them. It just sat there an buzzed, and would not move. I thought I had it bound up somehow, but I couldn't see anything wrong. I had another spare servo, that needed gears, so I put gears in it, and tried it, and it seemed OK.

Then, I put everything back together, and tried it. No luck at all. The servo arms still have the same amount of play in them, even with new gears. After much observation, I realized what is happening. If I slowly give it right aileron, the left rear servo (aux) which is the only one that does not have excessive play, moves fine....but the right rear servo (aileron) does not move right away along with it. This results in the swash being lifted, changing the main blade pitch, thereby, my altitude problem. I tried using my spare DX6i, to eliminate the radio, and it was the same. I can watch it on the monitor, and it all looks good.

I am going to have to assume that I have at least two bad servos, as they just don't seem to be right. Not only do they have too much play in the arms, but they don't seem to react as they should compared to the newest one that has no play.

I am wondering if tomorrow, I can substitute the old servos from the B400 temporarily, not even mount them, just plug them in and watch how they react to inputs.

I am pretty frustrated with it tonight, have been working on it since I got off work.

I guess I'll price some new Eflite servos, I can't see spending alot of money on good servos for the CPP...

Hope you have a great day flying tomorrow as well!

I think I am going to concentrate on the B400...I always get frustrated with the way the CPP flies...

Talk to ya soon,

Glenn

(in reply to evdreamer)
       Post #: 57

RE: Eflite stock servo question CP Pro? - 6/4/2008 6:01:41 AM   
evdreamer


 

Posts: 2379
Joined: 8/12/2007
From: Lincoln, NE, USA
Status: online 		Glenn,

I had a bad servo on the CPP before. It was flying really bad, but I thought it was just me being a new pilot. Then one day I saw it moved weird on the bench. Then once I replaced it all was good again.

You could try using the good servo on the CPP and just plug it into the other pins instead having to hook up the B400 servos. Just another option.

I don't really spend too much money on the CPP. I find that I am happier with the stock setup on the CPP and CX. I would rather spend the money on the 400-450 sized helicopters.

Hope you get the problem worked out on the CPP and have a better day tomorrow.

Nick

_____________________________

Since I started this hobby money seems to keep disappearing. :)
T-Rex 450SEV2, Gaui 200 SD

(in reply to rotarydoc)
       Post #: 58

RE: Eflite stock servo question CP Pro? - 6/4/2008 3:51:29 PM   
rotarydoc


 

Posts: 1108
Joined: 3/17/2008
From: Laurel, MD, USA
Status: offline 		Hey Nick,

Thanks for the reply, and suggestions. Last night, at the last minute, I went ahead and ordered 2 new Eflite servos, since the one seems like it's acting OK.
They are only $13 each, so it's not so bad. I really believe that the tailboom strikes might have something to do with the servo problems, I did not have this problem before....

I will probably go back to the lighter, stock Eflite blades for a while anyways, to see how it goes.

However, I did notice another potential problem that might be contributing to the boomstrikes...the grips/rotor head on my CPP seem really sloppy. In both ways. In other words, the grips have a good amount of play in and out when you pull/push on them. And also, maybe related to that, the grips have a LOT of movement in the rotor head where the orings are. I put new orings, but it's no better.

I have one shim in as it came from the factory. Is there any other reason for having too much play in that area? The spindle is new, and all the other parts are all there, and seem to be in good shape otherwise.

The amont of play I have, and the thinness of the shims would lead me to believe that I would need a LOT of shims to make the slop go away...am I overlooking something? (if I had to guess, I would say the grips have .010 to .015 of end play, in and out) I notice that unlike the B400, this setup does not use a thrust bearing, only ball bearings...stacked together.

I ran out of time last night, I'm gonna plug the B400 servos in tonight, and see what it does, at least I can watch them and get an idea of what's going on.

Hope you have a great day, maybe your T-Rex will come in today!

Glenn

(in reply to evdreamer)
       Post #: 59

RE: Eflite stock servo question CP Pro? - 6/4/2008 6:00:07 PM   
evdreamer


 

Posts: 2379
Joined: 8/12/2007
From: Lincoln, NE, USA
Status: online 		Glenn,

I have a little bit a movement in my grips. I don't have a feeler gauge to get an exact measurement. It has been awhile since I had the grips off, but is there a step washer in there? And is it facing the right way on the spindle. It looks from the bolt that I have a washer, then a step washer, then the grips, then another step washer, then a shim, then the head assembly. Then the opposite on the other side. Does that sound similar to what you have?

I just got the T-Rex. So I will probably be working on that all day.

Hope you can get that blade grip problem worked out.

Nick

_____________________________

Since I started this hobby money seems to keep disappearing. :)
T-Rex 450SEV2, Gaui 200 SD

(in reply to rotarydoc)
       Post #: 60

RE: Eflite stock servo question CP Pro? - 6/4/2008 9:42:46 PM   
rotarydoc


 

Posts: 1108
Joined: 3/17/2008
From: Laurel, MD, USA
Status: offline 		Hey Nick,

Yep, that sounds right, mine is the same. The bag of orings came with some fuel tubing, any idea what that is for? I posted to the group, maybe someone knows? I am wondering if you are supposed to use it to shim up the head, instead of using shims? I'll figure it out eventually, I suppose!

COOL! The T-Rex is in!!

I know you are going to have fun building that machine!

Let us know how you make out with it...

Glenn

(in reply to evdreamer)
       Post #: 61

RE: Eflite stock servo question CP Pro? - 6/4/2008 11:35:47 PM   
evdreamer


 

Posts: 2379
Joined: 8/12/2007
From: Lincoln, NE, USA
Status: online 		Glenn,

I have no idea what the fuel tubing is for.

I have a good majority of the T-Rex together. It has been an enjoyable experience so far. And since it is a kit I know all the bearings will be oiled and all the screws will have loc-tite. The manual is easy to understand and has great pictures of the helicopter assembly. It doesn't have a step by step process, so I am just winging it. I just got done mowing, so I will upload some pictures while I cool off. I have been working on the T-Rex for 5 hours now.

Did you get the B400 out today?

Nick

_____________________________

Since I started this hobby money seems to keep disappearing. :)
T-Rex 450SEV2, Gaui 200 SD

(in reply to rotarydoc)
       Post #: 62

RE: Eflite stock servo question CP Pro? - 6/4/2008 11:56:50 PM   
evdreamer


 

Posts: 2379
Joined: 8/12/2007
From: Lincoln, NE, USA
Status: online 		Here is what I have so far.

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_____________________________

Since I started this hobby money seems to keep disappearing. :)
T-Rex 450SEV2, Gaui 200 SD

(in reply to evdreamer)
       Post #: 63

RE: Eflite stock servo question CP Pro? - 6/5/2008 3:49:29 AM