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Old Jan 02, 2013, 10:50 PM
Hamman22830 is offline
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Help!
9101 Double Horse Problem

Brand new 9101 Double Horse. I charged the battery before use. Then decided to see the rotors spin. The bottom rotor spun correctly but the upper one wouldn't turn. Lots of blade knocking and I shut it down quickly.

I held the copter upside down so the upper rotors were out of the way and turned on the power again. The lower rotors spun at full power and the upper set barely turned but at 3/4 to full throttle, they did spin but at a much slower rate. I hit the left/right stick and felt no response from the chopper. Tail rotor did spin in the forward/reverse position.

I have pulled the upper shaft and re-seated it with the set collar below the large gear. I know that's tight and not causing any problems.

I unplugged the upper rotor motor and plugged it into the lower rotor motor plug and it spun at full speed. When the lower rotor plug was moved to the upper plug, it rotated slow.

I'm thinking I have either a bad control board or a bad transmitter at the throttle stick.

I got this at our local mall on a huge impulse buy. The next day I went back to the guy I bought it from and he'd packed up and left. So now I'm stuck trying to get this thing in the air.

Any suggestions?
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Old Feb 24, 2013, 06:33 AM
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hold the gears in your finger and try to spin the blade by hand you shouldn't have any movement if you do the screw is striped in the plastic head.a fix i have done was go to the hardware store and buy a pack of #4 screws 1/2"long they are bigger screws and will go in the plastic and tighten up on the shaft that fixed my problem with my 9118 coaxle look on the 9053 or 9118 thread for mods they are simular helicopters and fun to fly in low wind
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Old Feb 26, 2013, 03:26 PM
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I have a violation and the lower blades will not spin as fast as the upper one checked screws and they will not get tight. Will those screws fix my trouble also?
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Old Feb 28, 2013, 02:27 PM
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double horse 9101 circuit board

I purchases a new circuit board on ebay got it installed with no problems....I turn rhe power switch on and the l.e.d lights on the front and back of the heli come on but the red power indicator on the board keeps blinking..I'm thinking the board and transmitter are not communicating....any suggestions? PLEASE HELP!!!
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Old Feb 28, 2013, 03:03 PM
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Different fly 4 different guy
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Quote:
Originally Posted by bobbyDh9101s View Post
I purchases a new circuit board on ebay got it installed with no problems....I turn rhe power switch on and the l.e.d lights on the front and back of the heli come on but the red power indicator on the board keeps blinking..I'm thinking the board and transmitter are not communicating....any suggestions? PLEASE HELP!!!
Does the new pcb frequency match that on the tx? These radio coax's usually came in 27mhz and 49mhz, and less commonly 40mhz and 72mhz.

If it doesn't match you may beable to switch out the crystal on the tx.

regards . . . g
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Old Feb 28, 2013, 03:21 PM
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doublehorse 9101 probs

Yea they both are 49.
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Old Feb 28, 2013, 07:07 PM
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Originally Posted by orange monster View Post
I have a violation and the lower blades will not spin as fast as the upper one checked screws and they will not get tight. Will those screws fix my trouble also?



they should they will go in the plastic and lock on the shaft if when you tighten them up do it 1 at a time and check top blades to make sure it dosn't lock up if so back screw up a little so it wont touch inner shaft
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Old Feb 28, 2013, 07:10 PM
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Quote:
Originally Posted by bobbyDh9101s View Post
I purchases a new circuit board on ebay got it installed with no problems....I turn rhe power switch on and the l.e.d lights on the front and back of the heli come on but the red power indicator on the board keeps blinking..I'm thinking the board and transmitter are not communicating....any suggestions? PLEASE HELP!!!


is the new board the same frequence as the transmitter there is a few different one's i belive
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Old May 03, 2015, 10:55 PM
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My fix

Well its 2014 and I just bought one.. Same issue.. But I found a solution..
1. I noticed when I was looking at the antenna on the transmitter it was tight but wiggling so I open it... Sure enough the solder on the antenna holster broke free.. WalMart 795 for a gun.. Soldered it and got a signal

2. Even tho it fixed it I also noticed after ten feet away... No signal... So I soldered a thicker wire to the receiver.. All problems fixed... Hope this helps
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