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SMANN55 · 07-09-2011, 06:23 AM

Hello all
first let me say I have built a trex 500, trex 600, and trex 450 without having this problem. I have just completed my trex 250 and upon spool up the tail wags so violently I cannot even get it off the ground. I read about all the tail problems, so while building iI put it the kevlar belt, the micro heli tail slider, a mks ds95i tail servo, and a pheonix 25 esc. I have no vibrations, and no binding in the tail. I have tried adjusting the gain, played with pots 1 and 3, and lowered to the lowest point in parameter D. I even tried switching back to the align tail servo. Any help would be greatly appreciated. Also can someone tell me the proper wiring for the esc, the original motor wires and esc connections are redto red blue to blue, and black to black. The castle esc has red, white, and black wires.

Inverse · 07-09-2011, 07:03 AM

ESC wires aren't an issue, wire it up and if the motor spins the wrong way, swap 2 wires.
Are you using a satellite or a full size Rx?
Make sure you have your tail gain set up on the correct channel.
Double check your wiring and setup to what is specified in the manual, I had the same issue and I was sending 100% gain to the gyro, when the beast finished initialising, what light is on the BeastX?
Also, make sure your gyro settings are correct in your Tx.
Here is a thread with the same issue.

SMANN55 · 07-09-2011, 07:59 AM

I am running a full size receiver(futaba super fast) my light is blue and changing my gain in tx makes little differences, so I know I have it hooked up properly.

the collective · 07-09-2011, 08:11 AM

In addition to the blue LED, one of the other led's will illuminate...

It will be one of the A-N lights, it will be lit only for about two or three seconds after initialization. It will indicate the amount of tail gyro gain. The suggested starting point is to see the G light right after initialization. You can see the A-N indication for a few seconds after initilization and also briefly when you change the tail gyro gain in the transmitter...

The blue light you are seeing is indicating that you are in heading hold mode, so that part is right, but have a look for the G to be the one lit briefly after initilization.

SMANN55 · 07-09-2011, 11:34 AM

b lights during initialization the when done blue light on n lights for a few seconds

nexgen · 07-09-2011, 11:44 AM

see if some of this info helps you.

OCFlys Trex 250 BeastX build videos (helping a fellow freak)

sutty · 07-09-2011, 12:13 PM

N and blue would suggest that your HH gain is at 100%. Also, if when you adjust the gain in your radio, the MB still shows N after initialisation then this would suggest that your MB cannot see your radio gain. Make sure you have the gain lead connected correctly, and that you have the assignments done correctly in your radio to output the gain signal on the channel you intended. On all three of my MB instals, 250, 450 and 550, the gain shows either E or F after initialisation.

Good luck.

Cheers

Sutty

SMANN55 · 07-09-2011, 12:30 PM

Thanks for the input, I forgot to activate my gyro channel in my radio

the collective · 07-09-2011, 05:08 PM

Cool... Have you had a chance to see if the wag is gone with the G light yet?

SMANN55 · 07-09-2011, 05:11 PM

No I bumped hard when it started wagging and i lost one of the fbl links in the grass. It is so small I cant find it so I ordered a new set and i am waiting( and its killing me) .

the collective · 07-09-2011, 09:42 PM

I know that feeling... I just spent the longest week I can remember waiting for some parts myself...

07-09-2011, 06:23 AM	#1 (permalink)
SMANN55 Registered Users Join Date: Dec 2010	loosing my mind Hello all first let me say I have built a trex 500, trex 600, and trex 450 without having this problem. I have just completed my trex 250 and upon spool up the tail wags so violently I cannot even get it off the ground. I read about all the tail problems, so while building iI put it the kevlar belt, the micro heli tail slider, a mks ds95i tail servo, and a pheonix 25 esc. I have no vibrations, and no binding in the tail. I have tried adjusting the gain, played with pots 1 and 3, and lowered to the lowest point in parameter D. I even tried switching back to the align tail servo. Any help would be greatly appreciated. Also can someone tell me the proper wiring for the esc, the original motor wires and esc connections are redto red blue to blue, and black to black. The castle esc has red, white, and black wires.

07-09-2011, 07:03 AM	#2 (permalink)
Inverse Registered Users My HF Map location Join Date: Jan 2010	ESC wires aren't an issue, wire it up and if the motor spins the wrong way, swap 2 wires. Are you using a satellite or a full size Rx? Make sure you have your tail gain set up on the correct channel. Double check your wiring and setup to what is specified in the manual, I had the same issue and I was sending 100% gain to the gyro, when the beast finished initialising, what light is on the BeastX? Also, make sure your gyro settings are correct in your Tx. Here is a thread with the same issue. __________________ Compass 3D+ - OS55 Hyper/Hatori/Vbar Atom 500 Tarot 450 Pro - AR7200BX Spektrum DX8

07-09-2011, 11:44 AM	#6 (permalink)
nexgen Registered Users My HF Map location Join Date: May 2008	see if some of this info helps you. OCFlys Trex 250 BeastX build videos (helping a fellow freak) __________________ *Gaui 200 •Gaui 550 •Gaui X5* *BeastX Castle Scorpion Hyperion Spektrum JR* The Front Porch, Nexgens Lounge

07-09-2011, 12:13 PM	#7 (permalink)
sutty Registered Users My HF Map location Join Date: Feb 2008	N and blue would suggest that your HH gain is at 100%. Also, if when you adjust the gain in your radio, the MB still shows N after initialisation then this would suggest that your MB cannot see your radio gain. Make sure you have the gain lead connected correctly, and that you have the assignments done correctly in your radio to output the gain signal on the channel you intended. On all three of my MB instals, 250, 450 and 550, the gain shows either E or F after initialisation. Good luck. Cheers Sutty __________________ Regards, Sutty BeltEXI, mCX, mSR, 4G3, FBL Trex250SE µB, FBL Trex450Pro µB, FBL Trex550e VX1 Pro, FBL Trex600ESP VX1e, Parkzone P51D, QRX350Pro Last edited by sutty; 07-09-2011 at 05:12 PM..

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07-09-2011, 07:59 AM	#3 (permalink)
SMANN55 Registered Users Thread Starter Join Date: Dec 2010	I am running a full size receiver(futaba super fast) my light is blue and changing my gain in tx makes little differences, so I know I have it hooked up properly.

07-09-2011, 08:11 AM	#4 (permalink)
the collective Registered Users Join Date: Jun 2004	In addition to the blue LED, one of the other led's will illuminate... It will be one of the A-N lights, it will be lit only for about two or three seconds after initialization. It will indicate the amount of tail gyro gain. The suggested starting point is to see the G light right after initialization. You can see the A-N indication for a few seconds after initilization and also briefly when you change the tail gyro gain in the transmitter... The blue light you are seeing is indicating that you are in heading hold mode, so that part is right, but have a look for the G to be the one lit briefly after initilization.

07-09-2011, 11:34 AM	#5 (permalink)
SMANN55 Registered Users Thread Starter Join Date: Dec 2010	b lights during initialization the when done blue light on n lights for a few seconds

07-09-2011, 12:30 PM	#8 (permalink)
SMANN55 Registered Users Thread Starter Join Date: Dec 2010	Thanks for the input, I forgot to activate my gyro channel in my radio

07-09-2011, 05:08 PM	#9 (permalink)
the collective Registered Users Join Date: Jun 2004	Cool... Have you had a chance to see if the wag is gone with the G light yet?

07-09-2011, 05:11 PM	#10 (permalink)
SMANN55 Registered Users Thread Starter Join Date: Dec 2010	No I bumped hard when it started wagging and i lost one of the fbl links in the grass. It is so small I cant find it so I ordered a new set and i am waiting( and its killing me) .

07-09-2011, 09:42 PM	#11 (permalink)
the collective Registered Users Join Date: Jun 2004	I know that feeling... I just spent the longest week I can remember waiting for some parts myself...

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