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Model Forum / Radio Controlled / Helicopters / September 2006Blade CP gyro malfunction?
Last night I crashed my CP. Not to much physical damage but on the next take-off the tail was going all over. I looked at every part and things seemed OK. Could it be a gyro problem? I opened my 4-1 RX and found a little metal cover loose in it. It looks like the receiver shield. Is this dangerous? Thank you | Last night I crashed my CP. Not to much physical damage but on the next | take-off the tail was going all over. I looked at every part and things | seemed OK. Could it be a gyro problem? Perhaps. Proper operation of the gyro is easy to determine. Hold the helicopter in your hand, and put it at half throttle. Both rotors should spin. Then turn the helicopter with your hand to the left and to the right, and the gyro should make the tail rotor attempt to oppose your movements. It should be very obvious -- the tail rotor will speed up and slow down greatly. | I opened my 4-1 RX and found a little metal cover loose in it. It | looks like the receiver shield. Is this dangerous? It could certainly cause problems, yes -- especially if it shorts something out or otherwise touches something metal. Glue it back into place. If the gyro is shot, you'll probably have to replace the 4-in-1 unit. The part is $70 I think, but I know a guy here in Austin who was selling a few for $30 if you need me to get him in touch with you. If you do spend $70, I'd suggest getting the part out of the Blade CP Pro instead. It's similar to the Blade CP version, but the RX and esc/esc/gyro parts are seperated and can be replaced seperately, and you can also use your own gyro and bypass the internal one (so you can use a HH gyro.) I haven't tested that the parts are interchangable, but it sure looks like they should be.  SignatureDoug McLaren, dougmc@frenzied.us Porkchops and bacon, my two favorite animals. --Homer Simpson I will try the tail test although it does not have a tail roter since it uses counter rotating rotors but I am certain it will work. > | Last night I crashed my CP. Not to much physical damage but on the next > | take-off the tail was going all over. I looked at every part and things [quoted text clipped - 30 lines] > Doug McLaren, dougmc@frenzied.us > Porkchops and bacon, my two favorite animals. --Homer Simpson >I will try the tail test although it does not have a tail roter since >it uses counter rotating rotors but I am certain it will work. If you've got counter-rotating rotors, you don't have a Blade CP. You've got the CX model. I'm pretty sure the 4-in-1 units for these ships are different and not interchangable. | >I will try the tail test although it does not have a tail roter since | >it uses counter rotating rotors but I am certain it will work. | | If you've got counter-rotating rotors, you don't have a Blade CP. | You've got the CX model. Correct. However, the test does still work -- it's just that instead of the tail rotor speeding up or slowing down, one rotor will speed up and the other slow down. It will be very noticable. (Personally, I'm a bit surprised that the CX has a gyro at all. From how it works, I'd expect that a gyro would not really be needed -- but it definately *does* have one, as this test will quickly show. I guess the gyro just makes the tail even more stable.) For a CX, you may have made it so one rotor binds more than the other, and therefore turns slower. If the difference is small, you could adjust the pot in the 3-in-1 (I think it's a 3-in-1 for the CX) but getting new parts would probably make more sense. But figuring out which part is bad might be tricky. | I'm pretty sure the 4-in-1 units for these ships are different and | not interchangable. Nope. Very different. SignatureDoug McLaren, dougmc@frenzied.us I can't take his money. I can't print my own money. You want me to work for money. Why don't I just lay down and die! --Homer Simpson MY MISTAKE I do have a CS!!! Sorry As for on motor binded it would than turn only one way. It goes both sides. Thank you all for the info! > | >I will try the tail test although it does not have a tail roter since > | >it uses counter rotating rotors but I am certain it will work. [quoted text clipped - 26 lines] > I can't take his money. I can't print my own money. You want me to > work for money. Why don't I just lay down and die! --Homer Simpson >| >I will try the tail test although it does not have a tail roter since >| >it uses counter rotating rotors but I am certain it will work. [quoted text clipped - 5 lines] >of the tail rotor speeding up or slowing down, one rotor will speed up >and the other slow down. It will be very noticable. I wasn't disputing that. Just pointing out that the 4-in-1 is different. OK Idid the test, no resistance at all. But this heli is so small I question the fact that the gyro action could be noticable at all. I an going to the store to test a new 4-1. Thank you all for the answers. > >| >I will try the tail test although it does not have a tail roter since > >| >it uses counter rotating rotors but I am certain it will work. [quoted text clipped - 8 lines] > I wasn't disputing that. Just pointing out that the 4-in-1 is > different. | OK Idid the test, no resistance at all. But this heli is so small I | question the fact that the gyro action could be noticable at all. I an | going to the store to test a new 4-1. Thank you all for the answers. It won't really show up as resistance in a CX, not as much as it does on a CP anyways -- on a CP you'll really hear that tail rotor spin up. On the CX, set the throttle so the rotors are both turning, but not too fast -- perhaps half throttle, or perhaps slower? By rotating (yawing) the helicopter quickly one way and then the other it should be OBVIOUS that one rotor speeds up and the other speeds down. If the rotors aren't going too fast, one will even stop as the other speeds up greatly. Looks like the Blade CX control unit does not have a gyro gain adjustment, so there's nothing to adjust there. If your control unit is indeed broken, be sure you get the right one. The CP one looks a lot like the CX one, but the two are very different. The CX one is also cheaper -- about $50. | > >| If you've got counter-rotating rotors, you don't have a Blade CP. | > >| You've got the CX model. [quoted text clipped - 5 lines] | > I wasn't disputing that. Just pointing out that the 4-in-1 is | > different. And I wasn't disputing what you said either :) SignatureDoug McLaren, dougmc@frenzied.us I've heard the screams of the vegetables. OK Idid the test, no resistance at all. But this heli is so small I question the fact that the gyro action could be noticable at all. I an going to the store to test a new 4-1. Thank you all for the answers. > >| >I will try the tail test although it does not have a tail roter since > >| >it uses counter rotating rotors but I am certain it will work. [quoted text clipped - 8 lines] > I wasn't disputing that. Just pointing out that the 4-in-1 is > different. |
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