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450 Class Electric Helicopters 450 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar. |
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10-14-2014, 07:31 PM | #1 (permalink) |
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Join Date: Sep 2014
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T-REX 450 PLUS DFC + KST DS215MG incompatibility?
Hi guys,
Since I 've changed the stock Align servos for KST ones, my bird won't fly anymore. This threat is the continuity of this one https://www.helifreak.com/showthread.php?t=650285 Now, I cannot take off anymore without breaking everything (several times) My first question is: Does anybody tried to change servos with Align 3GX MR flybarless system? Did you guys tried with KST ones? Second thing: Since I need to reverse on my transmitter ch1, ch2 and ch6 to have a good behavior and my fbl system does not support the compensation reversal in the unit programming step, what I understand is my new servos are running in the opposite sides of the Align ones. That means, and I can see it when I tilting and rolling the heli, the fbl system try to compensate movements to the other side. That's why heli cannot takeoff....I mean! What do you think guys? I opened a ticket to the supplier where I bought the heli and they sayed that "you may want to change the swash mix number from positive to negative to reverse the cyclic movement" What does that mean? How can I do that on my Futaba T6j? Any help will be very appreciated, Thanks |
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10-14-2014, 07:55 PM | #2 (permalink) |
Registered Users
Join Date: Feb 2013
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First off the seller is wrong. Swash mix values are only used on 3GX not the 3gx mrs. Are you positive you have all the servos plugged in correctly? It's possible you mixed the aileron and pitch servos.
Either way don't attempt to fly it again untill you can tilt the heli and the swash 100% counters your movement. If the swash leans the way you lean the heli then it will self destruct.
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Team MSH USA - Cyclone Blades MSH Prôtos 380 Brain 2 MSH Prôtos Max V2 Brain |
10-14-2014, 08:08 PM | #3 (permalink) | ||
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Thread Starter
Join Date: Sep 2014
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Thank you Nick for your answer.
Quote:
Quote:
any other idea? |
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10-14-2014, 08:47 PM | #4 (permalink) |
Registered Users
Join Date: May 2012
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You need to do a full setup, I would create a new model in your radio and redo the entire fbl unit setup. Have you done a full setup on this system before?
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10-14-2014, 09:29 PM | #5 (permalink) |
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Thread Starter
Join Date: Sep 2014
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Hi Crash,
I didn't do a full fbl setup since this unit (align 3gx mr) have only 2 built in setup that you cannot tune. It has been designed for t-rex250/450 size. Either, I don't think it's a transmitter wrong side setup because even if I turn off the transmitter, the gyros should counter the tilt by moving the swashplate opposite way and they don't with the news servos! They are moving the same side! |
10-14-2014, 09:48 PM | #6 (permalink) |
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Join Date: Oct 2013
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I agree with everyone that said check to make sure you didn't mix up the connectors for the ail and pitch servos.
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NOOB with the following toys: 550X, Trex 450 Pro DFC, MCPX-BL, T28, MSRx, nanoQX, 350QX, DX9 |
10-15-2014, 07:04 AM | #7 (permalink) |
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Join Date: Sep 2009
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Sometimes when changing brands of servos they need to be reversed in the radio
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10-18-2014, 11:05 PM | #8 (permalink) |
Registered Users
Join Date: Mar 2014
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On your Futaba T6J radio press mode and the first thing to come up is REVR which sets the sevo travel direction. Press select to cycle through the different servo channels going from NOR to REV as needed with the + or - rocker. Then when you get them working in the right direction I would go through a full set up. You will need a mirror and something bent like a paper clip to press the button with, just follow the manual it's not hard the first time take your time. After you've done it a few time you can do it pretty quickly.
Larry |
10-25-2014, 06:51 PM | #9 (permalink) |
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Thread Starter
Join Date: Sep 2014
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Hi there,
KST-DS215-MG and Align 3 GX MRs are incompatible since there are turning in the opposite side of the Align ones. There is no way to change this in the FBL system. I bought 3 Align DS430M and everything is running well now. Thank for your help. I'm selling them: https://www.helifreak.com/showthread...78#post6153378 |
11-13-2014, 02:07 PM | #10 (permalink) |
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Join Date: Jan 2008
Location: Gilbert Az
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You still have to reverse your servos in your transmitter. They work fine. I would recommend getting rid of the MRS and getting an AR7200bx though. You'll never look back and can get a new one for 150 if you watch for them here. I got two, from two different people.
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