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MINI TITAN PROBLEM

Started by premvijay, June 14, 2009, 02:18:58 AM

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anwar

Assuming you are using a linear throttle curve, try something like -3 at 0 throttle, +3 at 50% throttle and +9 at 100% throttle.
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anwar

BTW, did the heli spin on its tail and crash at the end of the video ?

If it did, that typically means your gyro compensation direction is reversed. You will need to change the direction using dip switches on the gyro unit.
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premvijay

no luckily the heli just stopped itself after about 5 sec. What should the settings be for the gyro. What should be the ideal pitch angles

anwar

Again, please note that both your questions have been answered before. Please read two posts above.
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anwar

#104
Just to clarify, there is dip-switch on the TG6100M with the name "RUD" (for "rudder"), with two positions "NOR" (normal) and "REV" (reverse).  It is this switch that you want to flip, if the heli rotates on its tail when there is enough head-speed.

Note that the heli may rotate on its tail also because the linkage length for tail rod is too much or too little.  So while spooling up slowly, see if you can control the tail pirouettes by applying rudder. If  you are able control (or almost control) the spin, then it is  just a control rod length issue.  If you are unable to get any level of control on the spinning with any amount of rudder, try flipping the above mentioned dip-switch.
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premvijay

Dear Mr. Anwar, i have set pitch as advised by you at -3 at 0 throttle, +3 at 50% throttle and +9 at 100% throttle. will try the advise of ur last post regarding switching switches and intimate u on the success or failure.regards

anwar

So whatever happened to this ?  :headscratch:
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anwar

Updates ?  Still grounded ?
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anwar

OK, although Prem chose to never reply to this thread, he did confirm that it got sold in another thread.  So whatever the issue is, must have got resolved !  ;)
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premvijay

sorry for not responding earlier, as pointed out by Mr.Anwar i have managed to sell it. Sorry for the delay.i am locking it now

dst161

Need Help.

I have gone through the complete thread about the problem.

I have purchased a used Mini Titan E325 with everything setup very well but without the Tx and Rx.

This is the first time I will fly so had really hard time to even install the receiver with the servos leads going to the right channel but some how managed to connect everything in the right channel.

Tested everything and all the servos work in the right direction.

The only problem I have now is that when I move the throttle stick to half or full, the all the 3 servo arms move up pushing the swash plate up but the motor does not start at all.

Initially when I was struggling to setup the leads, I started with connecting the ESC into channel 3 and the moment I did that, the motor started rotating which means the motor is working fine.

But now after everything is setup properly, the motor does not start.

Please help me resolve the issue.
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anwar

First of all, any experiments should be with the main blades removed.

What radio are you using ?  Are you using the CCPM mixing from the radio, or the mixer unit that comes with the MT ? If you are using a heli model, have you verified the throttle curve ?
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dst161

I agree, learnt it the hard way.

Initially had the blades on and the moment I connected the battery the blades rotated and hit me. Immediately removed the battery and got the blades off the bird.

I am using a Futaba 8FG Super which defaults to Heli.

All the settings are on default, however I have reversed the servos for channel 2 and 6.

After doing that all the servos are moving in the right direction as so is the awash plate.  Had followed the video for CCPM Setup.

Have set the swash type set to H-3 on th transmitter.

All working fine other than the motor starting.
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Hellyflyer

as Anwar said have you checked throttle hold/cut on Futaba, tx make sure that switch is turned off only then the motor will spin
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anwar

Since you are using an 8FG, pay close attention to the "FUNCTION" menu, and use the "SERVO MONITOR" menu for troubleshooting. 
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dst161

I have checked and confirm that the Throttle Cut is turned off. Actually cannot keep it turned on because its a switch like the door bell switch, u can press it but the moment u leave it, it comes back to its actual position.

I have also turned off the throttle cut/hold to OFF position in the TX menu.

Mr. Anwar I did go to the Servo option in the function menu and checked, the curves show proper reading. Infact when I put the servo into the test mode, the curves on the Tx move up and down and so does the servos on the heli.

Even after all this, I am unable to understand why the motor did not turn on.

As of now the ESC was connected through the switch where the other end of the switch went to channel 3 (throttle).

For some reason I removed the switch and connected the ESC wire directly in the channel 3 and suddenly the motor started spinning even though the throttle stick was at 0 on the Tx.

Luckily I had already removed the main blades but still the flybar blade hit me and I sort of have a small cut on my finger. (Well it was my mistake and now i pay for it).

Serious Warning to all (specially once new to heli like me), be very careful with the Heli's and do not have the main blades on the heli unless all is setup well and tested. It is just too dangerous.

Back to the point, Friends, please help.... what should I do? Cannot get the motor to spin.
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anwar

#116
You added a switch on a "signal" wire ? :o  That makes sense when you are using a separate BEC, or you have a separate receiver battery powering the electronics.

For Futaba, you have to reverse channel 3.  That is the first thing you do, when you setup an electric model in Futaba.

What you should have been watching for on the "Servo Monitor" screen is the activity on channel 3 (nothing else matters, as far as this problem is concerned).  Seems like you missed this important part. So let us try this again.  Does the bar for channel 3 show any movement when you increase/decrease throttle ?

Finally... there is NO "servo option in function menu".  There is a "FUNCTION" screen and a separate "SERVO MONITOR" screen (I believe both are under the LINKAGE menu).  Please pay close attention to details on these instructions, or this remote debugging will drag on :)

The function menu is what decides which channel does what.  Make sure throttle is channel 3.  Then, as I said before, use the Servo Monitor to see if there any movement on channel 3 when you change throttle via the stick. 

Once gain, use the SERVO REVERSE menu to ensure channel 3 is reversed.
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dst161

OK.

Current settings on my Futaba 8FG:

Linkage >> Reverse (Option 7) >>
1 Ail - Norm
2 Ele - Rev
3 Thr - Rev
4 Rud - Norm
5 Gyro - Norm
6 Pit - Rev
7 Gov - Norm
8 Ndl - Norm
DG1 - Norm
DG2 - Norm

Linkage >> Servo (Option 1) >> with "Throttle stick full down" reading
the bars show the following readings:
1: +49
2: -50
3: -100
4: 0
5: +59
6: -49
7: 0
8: 0

Linkage >> Servo (Option 1) >> with "Throttle stick full up" reading
the bars show the following readings:
1: -50
2: +49
3: +100
4: 0
5: +59
6: +50
7: 0
8: 0




Then changed the Channel 3 to normal
Linkage >> Reverse (Option 7) >>
1 Ail - Norm
2 Ele - Rev
3 Thr - Norm
4 Rud - Norm
5 Gyro - Norm
6 Pit - Rev
7 Gov - Norm
8 Ndl - Norm
DG1 - Norm
DG2 - Norm

Linkage >> Servo (Option 1) >> with "Throttle stick full down" reading
the bars show the following readings:
1: +49
2: -50
3: +100
4: 0
5: +59
6: -49
7: 0
8: 0

Linkage >> Servo (Option 1) >> with "Throttle stick full up" reading
the bars show the following readings:
1: -50
2: +49
3: -100
4: 0
5: +59
6: +50
7: 0
8: 0




Other Menu settings:
Linkage >> Model Type (Option 3) >>
Type: Helicopter
SWASH: H-3
RESET: OFF

Linkage >> Frequency (Option 4) >>
Area: General
FASST: 7CH

Linkage >> Function (Option 5) >>
           CTRL  TRIM
1 AIL -    J1      T1 SEPAR
2 ELE -    J2      T2 SEPAR
3 THR -   J3      T3 SEPAR
4 RUD -   J4      T4 SEPAR
5 GYRO - --      --
6 PIT -    J3      --
7 GOV -   --      --
8 NDL -    LS     --
v1 AUX1   --     --
v2 AUX1   --     --
v3 AUX1   --     --
v4 AUX1   --     --
DG1         SD
DG2         SA

Linkage >> Sub-Trip (Option 6) >> All set to 0
1 Ail - 0
2 Ele - 0
3 Thr - 0
4 Rud - 0
5 Gyro - 0
6 Pit - 0
7 Gov - 0
8 Ndl - 0

Linkage >> Fail Safe (Option 8) >>
3 THR HOLD
all other are blank

Linkage >> THR CUT (Option 10) >>
ACT: OFF
POS: 17%
SW --

Linkage >> SWASH (Option 12) >>
Neutral         AFR
POS 50%      AIL +50%
                  ELE +50%
                  PIT +50%

Hope the above info will help understand the setup so you could help me figure out what am i doing wrong.

BTW Anwar ji, as mentioned in my last post, when I removed the switch and connected the ESC cable to ch3 on the Rx, the motor started spinning (and I cut my finger slightly).
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anwar

Quote from: dst161 on February 19, 2012, 09:05:17 PM
BTW Anwar ji, as mentioned in my last post, when I removed the switch and connected the ESC cable to ch3 on the Rx, the motor started spinning (and I cut my finger slightly).

I got everything from the above post, except the part quoted above.  What do you mean when you say "you connected the ESC cable to ch3 on the RX"... it should be connected there the whole time, right ?

The servo monitor confirms that the throttle channel output (channel 3) seems to be working as expected.  Throttle should be reversed, unless you messed with settings in the SYSTEM menu.

This looks more and more like a wiring/connections issue.
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dst161

The channel 3 is reversed.

All this time I had the battery connected to the ESC and the ESC connected to the motor and the switch where the switch was connected to ch3 on the RX.

I actually removed the switch and tried connecting the ESC cable to ch3 and every time I did that the motor starts spinning and I was lucky twice but third time I did so I cut my finger.

Now I am scared to connect the ESC directly into ch3 unless you can suggest a safe way to connect it and test.
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anwar

Remove your tail blades.  Secure the heli on table (use tape or sticks+tape or cable ties or something like that).

Try powering up with the throttle stick all the way up one time, and then try again with the throttle stick all the way down. One of them should have the motor idle.

If not, I believe you are incorrect in your connections, and you have to post pictures/illustrations of how you have connected everything. 
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dst161

OK Mr. Anwar, Will try and let you know by late tonight.

I have just come to the office and my work timing is from 2 PM -10 PM.

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dst161

Hello Mr. Anwar, as you suggested, I tied the heli tail to a table and then first connected the battery and just as I was about to connect the ESC cable to ch3 on the Rx, I stopped and first checked the Tx to make sure that Ch3 on the Tx is reversed.

Once confirmed, instead of connecting the ESC to the Rx, I actually got an idea and disconnected the battery from the Heli.

Then I actually removed the motor itself from the heli and then connected the battery to the ESC and the ESC directly to the Rx in ch3 and then tested and everything worked absolutely fine.

I preferred to remove the motor altogether from the heli itself was because I was just too scared to connect the battery even though the heli was secure.

Now the only thing I have to do is to replace the Tail Pitch Control Link as it broke last time when i also got hurt.

Thanks allot to Mr. Anwar and all others who have helped me till this point.

Once I replace the control links, will try to hover the heli and will let u know the results.

BTW, the throttle curve is on default as of now i.e. 0 - 25 - 50 - 75 - 100.
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anwar

Wow ! I totally missed the fact that you were connecting the battery first, then connecting the ESC signal cable to the receiver.  Note that in all electric setups, the battery to ESC connection is what is typically connected last (just like in "Cars", which is noted on your profile), and the ESC to receiver connection is permanently plugged into whatever channel (ch 3 in this case).

Now I am totally confused as to what happened, and how you are confirming that throttle is working fine with the motor "removed" ?

In any case, please fo confirm the movement of the tail pitch slider is in the right direction, and so is the direction of gyro compensation.  And for the first spool up, do in a smooth flat ground, and very slowly, as there is some chance that the heli will spin on its tail (as the gyro compensation direction may be reversed).
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dst161

What I did was just removed the motor from the heli and placed it separately and then connected the battery to ESC while the ESC was already connected to the RX in my last attempt.

The moment I connected the battery, I heard the music and to my surprise the motor did not spin.

The I moved the throttle stick on the Tx slightly to around 10% and the motor started to spin.

The i tried moving the throttle stick up and down multiple times and the motor responded based on how much throttle I gave.

The I put the motor back into the heli and tested it again and things worked as they should.

When you say the tail pitch slider is in the right direction, can you please provide more details on that?

What should happen if the rudder stick (throttle works as rudder when moved horizontal - side ways instead of up/down) is moved to right?

Should the rudder servo push the tail linkage rod towards to back or should it pull the tail linkage rod towards the gyro?

and so on? that will help.
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