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HomeAircraftHelicopterBeginners Corner › Multiplex Funcopter problem
08-06-2012 08:54 PM  6 years agoPost 1
Happyexpat

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Alicante, Spain

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Before I start I am learning to fly helis and have an Align 450 sport and a 600E but...
I thought a funcopter would be good for practice and it is except that the motor keeps stopping after a few minutes. It is not drawing excessive power, it runs on the bench, I have changed the ESC. I am out of ideas. Has anybody heard of this before and more importantly does anybody know how to cure it. If not its going in the bin as I am fed up with changing tail rotor gears. The good news I suppose is that when it drops out of the sky thats about all that breaks but its no consolation!

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08-06-2012 08:59 PM  6 years agoPost 2
AtTheCross

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Southern CA

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You changed esc to what kind? The timing and freq settings ar e v wry particular for this motor. Want high timing and a freq of 16kh

ASI Green Mongoose CY29RC - 67 flights

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08-06-2012 09:03 PM  6 years agoPost 3
AtTheCross

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Southern CA

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Also if you want to avoids the stripped tail gear issue you can upgrade to a belt drive check http://www.funcoptermods.com

This used to be my site before I sold it, there are many good tips and tricks on the site.

The funcopter is a blast the only reason I dropped it was to concentrate my limited funds on my two gassers otherwise I'd still be rocking on the funcopter

ASI Green Mongoose CY29RC - 67 flights

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08-06-2012 09:54 PM  6 years agoPost 4
Happyexpat

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Alicante, Spain

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Thank you
Stunning thats really all I can say! I have just, on the advice of my friend Marshy, joined this forum. I have for two months been trying to find an answer to this problem and in an hour I have got it. As I said stunning and thank you! I will post on here the ESC I have fitted but I am not at home at the moment and cannot remember, such is senility at 60 LOL

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08-07-2012 03:08 PM  6 years agoPost 5
AtTheCross

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Southern CA

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No worries, have a good one

ASI Green Mongoose CY29RC - 67 flights

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08-07-2012 06:36 PM  6 years agoPost 6
Happyexpat

rrNovice

Alicante, Spain

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Speed controller
The speed controller currently fitted to the Funcopter is a HobbyWing 60amp guard. I appreciate its rather on the heavy side and I do have in stock a Hobbywing flyfun 40amp opto if that would be better. Neither controller provides any info on frequency but both are currently set to low timing.

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08-11-2012 09:12 PM  6 years agoPost 7
Happyexpat

rrNovice

Alicante, Spain

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Pulling my har out
Sorry to come back on this but I am really pulling my hair out with frustration! I have rebuilt the funcopter from top to bottom. It is mechanically totally correct as per the manual. The tail still won't stay still, pulling to the left, and it is in heading setting. I can't even get it off the ground safely. I have adjusted the giro gain from 0 to full with all point in between but no change. At over 80% it twitches which is what I would expect but it still pulls to the left.
When I open the throttle if I do it too fast (actually normal speed) it won't start properly. If I open it very very slowly it runs but for how long, as I can't get it in the air, is anybodies guess. I suspect the tail problem is linked to the motor problem as there is NOTHING else wrong. The speed controller is a hobby wing 60amp guard and the motor is V2 Himax standard. The transmitter is a T8FG and is set up as a plane with NO mixes. Expo is as per the manual!
This is potentially a superb heli for learning the basics and orientation but with all these problems it is also a nightmare. On other forums / websites it seems to be same questions but no answers. Can anybody help?

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08-11-2012 11:00 PM  6 years agoPost 8
AtTheCross

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Southern CA

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for the stock gyro: do not use the yellow gain wire, leave it disconnected set the gain to 100% manually.

make sure that item 37 of page 24 is only sticking out about 1mm from item 24

make sure that item 109 of page 21/22 is tight, double check because under torque they can slip

once those two items are complete, set the tail servo horn to 90° loosen the grub screw that holds the tail pushrod, item 20 page 4, slide the push rod until the tail rotors are perfectly even and the root as shown on page 25. once the tail rotors are set tighten the grub screw at the servo horn

looking at the tail servo from the side (nose of frame to the left tail rotors to the right) right rudder on the tx should move the tail servo horn to the right, left to the left.

set the gear mesh - loosen the boom at the white boom holder, make sure you loosen the single screw on the opposite side of the frame too.

pull boom so you can place a piece of paper between the crown gear and the gear on the boom side page 34. tighten the boom, remove the paper

let me know how it goes, this is a great heli once set up properly

manual

ASI Green Mongoose CY29RC - 67 flights

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09-14-2012 08:17 AM  6 years agoPost 9
Happyexpat

rrNovice

Alicante, Spain

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Solved ish
Well thanks to all the help I got it flying reasonably well last Saturday. Capable of hovering albeit not static and doing figure 8 and circuits. I say I got it flying....about 8 minutes and then when it was at a fair height the perishing tail gave out again and it started spinning round like a top. Needless to say it wasn't a soft landing and now needs new rotor and probably a shaft but I haven't checked yet. The tail system must be altered, it really is a weak point. I want to keep the body so I can't figure out how to mod it to provide a belt drive, that must be the solution and I am sure somebody must have done it using stock parts from another heli!
This has now become a challenge which I don't want to give up on!

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09-14-2012 04:50 PM  6 years agoPost 10
RCHSF

rrKey Veteran

NC

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Here are a couple links that may be of help. I just googled around to see if what I could find for you.

http://www.funcoptermods.com/DIY_Mods/Archive.html

http://www.funcoptermods.com/Instal...ation_Page.html

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