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View Full Version : 3-in-1 problem - Main & Tail rotors not turning


Steve CP Pro
12-22-2006, 09:35 AM
What would cause a 3 in 1 to fail? Do they fail often? Right stick has all functions...left stick cyclic works, but no rotation of the main rotor or tail rotor. Checked both motors...both OK. Odd part is, it worked the day before. The next morning...nothing, just a strobing of red & green on the LED.

After adding G90 gyro and testing (all working 2 days ago), the only change was replacing the main rotor shaft shear pin yesterday. I didn't change the electronics at all.

After that it wouldn't work...very odd. Tested it with a new motor and nothing. Plugged the tail rotor motor into the main...still nothing. Transmitter works fine on mine. (both are on the same frequency)

This morning I tried re-testing and now I get the normal LED lights, but still no rotation from either main or tail.

Called Horizon and was told to send it back for replacement under warranty. All testing seems to indicated the 3-in-1 is bad, but since I'm new to this, does anyone have any other tests I should perform on the 3 in 1 before sending it back? The Blade CPP is 5 days old.

spork
12-22-2006, 09:42 AM
The 3 in 1 unit contains a receiver and a speed-controller (actually separate units in the same case). Typically it's the speed controller that burns out. This sounds like the symptoms you describe. Not sure what would've caused it except for hitting throttle while the motor wasn't allowed to turn.

Steve CP Pro
12-22-2006, 10:11 AM
When he crashed it, I guess that may have caused the problem...but I did spin it up (somewhat slowly and wouldn't get to full speed) when he brought it over for me to repair, and that's when I found the shear pin was...well sheared.

Thanks for the info. We're already looking for a T-Rex (don't know what model yet...maybe 450se to a 600) as a replacement since the CPP is SO light and somewhat difficult to control. All indications seem to show a beefier heli is easier to operate.

spork
12-22-2006, 10:20 AM
I fly the 450. You'll definitely enjoy that as a step up. If you have the space and $$$ I'm sure you'd like the 600 (although I haven't actually seen one).

I should talk my buddy Kris into getting a 600. The will-power is weak in that one! :mrgreen:

Steve CP Pro
12-22-2006, 10:26 AM
Would you mind if we spoke by phone? (I have free long distance) You could answer some question very quickly that way on our purchasing considerations.

spork
12-22-2006, 10:30 AM
Sent my number by PM

spork
12-22-2006, 10:33 AM
Steve, I just checked out your website. I bet we've met on the road. You ever work a game with a Sportvision effect?