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Post by fjlilly on Apr 17, 2013 3:31:09 GMT 1
I have taken my cub out and had 3 flights in my belt, when I crashed kind of hard.
I had to replace the front cowl, motor shaft, and one of the wires on the motor broke off, so just to be safe I replace the motor as well. when I got everything connected back up, tail all works, then when I tested throttle, as soon as I touched the control stick, it went to full throttle, and would not turn off except when I unplugged the battery.
When I plug the battery back in, it goes to full throttle again. I rechecked all wires, etc. everything is connected correctly. could I have damaged the receiver?
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Post by flydiver on Apr 17, 2013 4:09:30 GMT 1
Yep. Common problem.
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Post by fjlilly on Apr 17, 2013 7:13:31 GMT 1
Is there anyway of fixing the one that I have? |
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Post by iandhunt on Apr 17, 2013 7:36:41 GMT 1
Is it the stock receiver? If so it might be a good time to replace and upgrade the electronics.
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Post by fjlilly on Apr 17, 2013 15:40:27 GMT 1
Is it the stock receiver? If so it might be a good time to replace and upgrade the electronics. What would be a good upgrade then for a receiver instead of buying another stock one? |
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Post by iandhunt on Apr 17, 2013 16:45:38 GMT 1
You would need to buy an ESC and a receiver. The unit in the cub is a combo deal....a.k.a. ESC reciever combo. If you leave the motor brushed you can get a really cheap brushed ESC on HobbyKing for about 10 including shipping. The receiver is more tricky. It really is about personal preference. A common step up is Spektrum which I use and the Cub uses as well. The stock transmitter is a little cheap since it is expected that the owner of the Cub will eventually mod the heck out of the plane.
I use a Spektrum dx6i transmitter and a AR 6200 with satellite. There are cheaper options and spektrum receivers are HIGH in price. I usually buy them off of eBay. A compatible spektrum brand is Orange....which are cheaper then spektrum. I also converted to brushless and had to add an engine mount since the brushless motors are shorter than brushed motors. If you just want a simple fix then order the combo deal and fly with it again but understand it is cheaply made electronics at its core. If you are feeling crafty and brave you can rip the old electronics out and use this situation as an excuse to upgrade your systems and transmitters. Do some reading on the boards in the electrics and motors sections and see if it is the right choice to make.
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Post by fjlilly on Apr 17, 2013 17:48:08 GMT 1
You would need to buy an ESC and a receiver. The unit in the cub is a combo deal....a.k.a. ESC reciever combo. If you leave the motor brushed you can get a really cheap brushed ESC on HobbyKing for about 10 including shipping. The receiver is more tricky. It really is about personal preference. A common step up is Spektrum which I use and the Cub uses as well. The stock transmitter is a little cheap since it is expected that the owner of the Cub will eventually mod the heck out of the plane. I use a Spektrum dx6i transmitter and a AR 6200 with satellite. There are cheaper options and spektrum receivers are HIGH in price. I usually buy them off of eBay. A compatible spektrum brand is Orange....which are cheaper then spektrum. I also converted to brushless and had to add an engine mount since the brushless motors are shorter than brushed motors. If you just want a simple fix then order the combo deal and fly with it again but understand it is cheaply made electronics at its core. If you are feeling crafty and brave you can rip the old electronics out and use this situation as an excuse to upgrade your systems and transmitters. Do some reading on the boards in the electrics and motors sections and see if it is the right choice to make. Thanks for the reply, more then likely I will upgrade the electronics. |
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Post by Crazy Horse on Apr 17, 2013 18:09:05 GMT 1
fjlilly, A warm welcome to this superb forum from soggy, misty, windy, rainy, Sussex, not necessarily in that order. I sympathise with you over your unintentional robust landing. I think you were rather unlucky to have sustained such damage but it is heartening to know that you are not in despair. Absolutely excellent advice from iandhunt. Orange receivers seem to have a good reputation but I must confess that I have no experience of them so far, but will have soon with luck. I have no idea of your craft abilities, however I am certain that if you remain in this hobby they will improve considerably!  I have read these posts for many months, over and over, (remember, I am an old git) I still do and learn every time. I wish you all the best, calm days and happy flying. |
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Post by fjlilly on Apr 17, 2013 20:17:59 GMT 1
fjlilly, A warm welcome to this superb forum from soggy, misty, windy, rainy, Sussex, not necessarily in that order. I sympathise with you over your unintentional robust landing. I think you were rather unlucky to have sustained such damage but it is heartening to know that you are not in despair. Absolutely excellent advice from iandhunt. Orange receivers seem to have a good reputation but I must confess that I have no experience of them so far, but will have soon with luck. I have no idea of your craft abilities, however I am certain that if you remain in this hobby they will improve considerably! I have read these posts for many months, over and over, (remember, I am an old git) I still do and learn every time. I wish you all the best, calm days and happy flying. This plane is a blast. As soon as I got it up in the air the first time, I knew I was hooked. I'm not letting a little damage keep me down,  Here is a video of my first outing: youtu.be/95h5eYJv_tE |
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Post by flydiver on Apr 17, 2013 21:21:26 GMT 1
Could you (or someone) take a good picture and post it of the ESC+RX (you'll have to check in the [Pictures] section on how to load a picture.)
The ESC burns up, actually it's the BEC (FET=field effect transistors in the battery eliminator circuit) that burn up. The RX should be OK. It seems there should be a way to just get a cheap brushed ESC. power the Servos AND use the remaining RX.
Is there a 'battery port' listed on the plug-in on the ESC? Probably you can use any of the plugs to get power in.
If someone has an old known burned out ESC, and a separate brushed ESC, plus a couple servos to test they might be able to verify this. You would bind it just like you normally do.
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Post by iandhunt on Apr 17, 2013 22:49:20 GMT 1
Sounds like you are giving us homework to do fly! You want to see if we can bypass the internal ESC and just use the Rx part of the combo unit? Would you like to see if it works with a fully functioning one as well?
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Post by flydiver on Apr 18, 2013 0:43:33 GMT 1
Sure, both functioning and dead would actually be optimal. A replacement ESC+RX is about $50, a disheartening sum especially since it's often the insult after a crash.
Simply replacing the ESC with a cheap brushed one might get new fliers back in the air cheaper and quicker.
I don't have anything but the really old NiMh units left.
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