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HelicopterAlignOther › Setup problem
11-29-2007 06:54 AM  10 years agoPost 1
Helijockey

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150 miles from somewhere

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I'm doing the setup of my nitro sport which happens to be my first ccpm heli. I've got the servos moving in the right directions for the cyclics and collective but am facing a problem with the swash movement. When I give collective the three servos move together but the swash tilts as if I'm giving forward elevator and moves up/down a bit and the paddles move as if elevator is being given. When I give back elevator, the elevator servo moves downwards, the pitch and aileron move upwards. But the swash only moves as if I'm giving collective and the paddles move slightly. My radio is the JR 9X which is like the JR9303. Having flown only raptors before I'm pretty excited to get this heli flying but just can't seem to get it set up I'd appreciate it if any of u guys could help me out with this. Thanks!

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11-29-2007 07:33 AM  10 years agoPost 2
MJHiscott92504

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James Hiscott , Germany for past 11 months

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Helijockey

Someone do for Helijockey like they did for me, have an experience member call you on the phone Helijockey and have a member set it up with you. There was no way I could have done my 600N/DX7 set up without a members help so harass them till some one takes you up and calls you. Lol
I had a very helpful member call me and we set it all up over the phone in about 15 minutes, I thanked him and I still thank him.

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11-29-2007 07:54 AM  10 years agoPost 3
Helijockey

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150 miles from somewhere

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That would be great

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11-29-2007 08:51 AM  10 years agoPost 4
MJHiscott92504

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James Hiscott , Germany for past 11 months

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call.....

Just keep checking this post and some one will contact you, if you want post your phone number as I have done. I am sending you a PM of a RR member whom is also a good friend, introduce yourself to him and tell him your a friend of Jim (me) at MJHeli products....

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11-29-2007 09:01 AM  10 years agoPost 5
MJHiscott92504

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James Hiscott , Germany for past 11 months

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PM

PM sent.....

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11-29-2007 10:05 AM  10 years agoPost 6
Helijockey

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150 miles from somewhere

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Thanks very much, I really appreciate it! Since I live in asia I don't think anyone would call me if I left my number But I'll definitely be calling ur friend today! I've also sent u a PM.

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11-29-2007 10:29 AM  10 years agoPost 7
RotorHead486

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England

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Hi Helijockey,

Not sure if you have got this sorted or not but here goes, it sounds as if you have a linkage or a ball on the elevator servo output arm at the wrong setting.

The first thing to do is make sure all your sub trims are zero and set your swash mix so that they are all say 60%. Then make sure the servo output arms which are on the servos are perfectly aligned, what i mean by this is if you were to put a ball in the top hole and a ball in the bottom hole you could put a line through them and it would be perfectly vertical, this is the first stage.

The best things for getting a perfect set on the servos is these new servo wheels from align, what you do with these is move them round on the servo with it in it's neutral position until it give a perfect alignment.

The next thing is to make sure all you linkages are bang on to the book, it helps to have a vernier guage but an accurate ruler is okay. Some setups require a slight adjustment of the links but for a starting point just go with the book.

With CCPM helis the distance where the ball is put on the servo output arm is critical and has to be the same on all three servos, it sounds as though you have an issue with the rear servo which is the elevator servo.

Hope this helps!
RH486

One Reason For Crashing'Rogue Servo Bent on World Domination'!!
FLP Flight Team

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11-29-2007 01:05 PM  10 years agoPost 8
Helijockey

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150 miles from somewhere

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Hi Rh486,
I'm using Hitec 6975's on cyclics and collective with the red star arms. The balls on the servo arms r on the second hole which is 15mm. I centered the servo arms, had to use subtrim for that, also all links except the two going from the washout r as per the manual. These two r open a turn each more than the manual and the swash, washout and mixer arms r level at center stick. The swash mix is at 60%. I tried the align wheels but they seem loose, an issue I noticed a lot of guys r complaning about here on RR. It seems the futaba and JR ones r ok.

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11-29-2007 01:31 PM  10 years agoPost 9
jab1969

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Fort Worth 76137, Texas , USA

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Sounds like everything is right as in swash arf, and servos direction, so do you have a swash leveling tool? Very simple to use and makes sure you have no inter action. Make sure no trim or sub trim at 0 pitch, 1/2 stick with all servo arms (wheels) at 90degrees, in stunt 2 (idel 2)then see if swash is level, if not adjust links to make swash level, then when swash is level at 0 pitch, move stick to full stick and see if swash is level, if not adjust end points on those servos either + or - then do the same for stick all the way down. This assures that you will not have any interaction in the swash when moving collective. Hope this helps, You realy dont need a swash leveler but it is more precise and works great.

Xtreme Power Systems, @Signs

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11-29-2007 02:30 PM  10 years agoPost 10
gt900uk

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Scotland

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If the swash is tilting forward when giving colective then it sounds to me like you need to reverse the servo connected to the front of the swash. Then all servos should work in the same direction together. The if you get incorrect movment like +ve pitch instead of -ve you just change the swash mix from +ve to -ve or vice versa depending on how it is set. Same for the cyclic controls if they work the wrong way change the mix to the opposit value it is now.

This Heli Will Self Destruct In Five Seconds!!

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11-29-2007 07:29 PM  10 years agoPost 11
Helijockey

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I checked the servos and they were very hot to the touch, I don't know why Although the sevos r moving correctly, still I reversed the elevator servo just to see what happens. Although the swash was still tilted forward, to my surprise the swash movement became normal. Also the elevator movement became ok! I also tried to fix the swash with the ATV but it didn't help. As soon as I reversed the servo in the proper direction the swash reverted back to it's original movement! Now I'm really confused

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11-29-2007 07:35 PM  10 years agoPost 12
gt900uk

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Scotland

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All the servos need to work in the same direction. Reverse it so that all three work to move the swash up when u move the stick up and down when you move the stick down. If it moves down when the stick goes up then you need to use the swash mix menu and change the pitch to a -ve value if its +ve or +ve if its negative. That will sort out the direction. ATV can only be used to ensure that all the servos stop at the same position at the end of their travel to keep the swash level at top and bottom.

This Heli Will Self Destruct In Five Seconds!!

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11-29-2007 07:36 PM  10 years agoPost 13
gt900uk

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Scotland

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Oh and if the servos are very hot make sure you dont have any binding and that all your controls move without resistance.

This Heli Will Self Destruct In Five Seconds!!

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11-29-2007 07:41 PM  10 years agoPost 14
reiserrob2003

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Brockton, MA.

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first, make sure all servos are moving in right direction, then make sure your pitch curve is setup 0-50-100, that'll give you full range of your collective, then set your throttle stick so it reads at 0 on the pitch graph. you should have zero degrees pitch as confirmed by a pitch gauge, if not adjust pitch links and make sure swash is level ( this is where a swash leveling tool comes in handy). also, make sure your swash ATVs are set at 100,100. now, throw stick to full positive or negative. check for swash levelness again, you can use your swash ATVS to fine tune servos and correct for travel differences. then do the same for negative pitch using low ATVs to correct for negative differences. this will help you get a linear movement of swash all the way through your pitch range. You may also have to adjust your total pitch range using your swash mixing values and if positive and negative pitch are unequally distributed you may have to adjust mechanical linkage and mixing values to correct for this, these last two things should however, be done first

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11-29-2007 08:18 PM  10 years agoPost 15
Helijockey

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Guys the servos all move up when I give full collective and down when I give full negative. The thing is the swash is level at mid stick already but the tilt which is at least at a 45 degree angle only begins when I go past mid stick All other settings already r as reiserrob2003 describes.

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11-29-2007 08:28 PM  10 years agoPost 16
gt900uk

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Scotland

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Does the tilt change direction when going -ve? Sounds like the servos are not moving in the right direction though its not so easy to diagnose over the net without seeing it.

This Heli Will Self Destruct In Five Seconds!!

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11-29-2007 08:44 PM  10 years agoPost 17
Cromer

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Germantown, NY

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Just a thought but make sure you have 120 degree CCPM as your swash type.

Phil

Phil

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11-30-2007 02:11 AM  10 years agoPost 18
Jason Bell

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California

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Pm Sent

Full list of instructions sent to you via PM.

Also check for 120ccpm as posted above me

AMain.com
Mikado "V Team"
Xnova Motors
Optipower USA
RCProPlus

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11-30-2007 04:12 AM  10 years agoPost 19
dva

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Maricopa, AZ

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I have noticed some weard interactions with the swash and am wondering what you guys think.

When I put my pitch and roll stick in a corner and run the cyclic up and down it looks like the swash is rolling some (plane changes with colective input). It is not a lot of movement but on my older heli I had the same thing and could never get an Aleron Tick-Tok to work with out the heli having some major pitch problems.

Could this be caused by having too much sub trim? I have a JR 9303 with the following subtrims:

0
8
32

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11-30-2007 04:48 AM  10 years agoPost 20
Jason Bell

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California

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That just sounds like that your servos have reached their maximum travel while the others have not.

Dont know why you would go in the corners any way.

AMain.com
Mikado "V Team"
Xnova Motors
Optipower USA
RCProPlus

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HelicopterAlignOther › Setup problem
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