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10-06-2005 09:43 PM  12 years agoPost 1
omayhemo

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Texas - Yeehaw​ya'll!

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Man, I've about had it with the Shogun.
I've dumped tons of dollars into it and still have yet to see it fly for more than a cycle.
Latest word, I finally got the blade tracking problem sorted out.
While trying to make some mechanical tracking adjustments...

I spin up to 50% throttle 0 degree pitch, all is well.
I spin up to 75% throttle 1-3 degree pitch, and all hell breaks loose.
My servos start going nutty and the motor gives temporary bursts of power every 1 to 2 seconds and then dies back for 1 second or so.
I try to throttle back down, to find that I can only throttle down to approximately 25% throttle (even tho the stick is as 0). I have to disconnect the battery to get it to stop.

WTF! One minute it was fine, the next I can't even spin up.
Nearly a month working on this thing and it still doesn't fly.
I'm sick to my stomach over this stupid thing.

EDIT: changed the stupid title I made out of frustration.

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10-06-2005 10:13 PM  12 years agoPost 2
Rob_T

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Sounds like a radio problem. What radio and what receiver are you using? What are the other electronics? (Stock motor or brushless?)

Small electrics helis are one of the most hostile environments for radio gear because its impossible to keep all the parts and wiring a long way from each other to avoid interferance. A good receiver is a must have.

If you post some pictures of your setup maybe someone here can spot some likely cause of the problem.

Just checking the obvious (no insult intended...) You did have all of the batteries fully charged (both Radio and heli) ?

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10-06-2005 10:32 PM  12 years agoPost 3
omayhemo

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I recently re-ran all the electronic wiring to seperate the antenna from everything else. I guess I'll take it apart this weekend to see what's what.

Batteries all fully charged, yup yup.

I have Electron 6 receiver, JR 6109 radio, CC25 ESC.
I'd spun the thing up, many a time before in checking tracking with no problem, this came right out of the blue.

God I'm frustrated. I feel like a total moron as long as this is taking me to get flying. I mean it's a freakin' ARF.

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10-06-2005 11:41 PM  12 years agoPost 4
Rob_T

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Ok, the receiver and ESC are what a lot of people are using, so they shouldn't be a problem. I'd carefully check the receiver aerial for breaks and make sure the receiver crystal isn't loose- those are some of the most common causes of problems!

PS I dont like the term "ARF", I prefer "Almost Ready to Crash"- it seems more accurate in my case!

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10-07-2005 03:33 PM  12 years agoPost 5
omayhemo

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Ashamed to admit, I had to solder the antenna back together when it got caught in the rotor. in tall grass.

But I used a silver compound solder and it's snug (I'm purdy good at that). I've checked distrance reception on my receiver, and that seemed fine, as long as I don't spin up the head. HMMM.

Now that you mention it, I'm wondering if the crystal is a little loose, when I spin up fast enough, the shake causes it to stutter!? I'm checking that as soon as I get home.

Thanks

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10-07-2005 07:57 PM  12 years agoPost 6
omayhemo

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Texas - Yeehaw​ya'll!

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BOOOYAAA!

The crystal was indeed loose. The vibrations from being out of track, must have caused it to jumble around causing sporadically lost reception.

Thanks for the tip.

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10-07-2005 09:31 PM  12 years agoPost 7
Twobeers

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Toronto, Canada

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hoorah!
Quite often a Ferrite bead is required on the power lead between the motor and Electronic Speed Control. Keep the antenna lead away from all other wiring and battery and especially the ESC. Try to keep the ESC away from servo wiring and your gyro.
What I have done with mine is this. LiPoly Battery in the tray, reciever (Expert RF650) on the side of the battery (all the servo plugs come in from the front of the heli. ESC is mounted under the main shaft between the skid supports. Gyro is on the little plastic tray above the battery. Revolution antenna is stuck in the little antenna tube supports on the port side of the skids with a couple little pieces of double sided tape (that stuff is real sticky) keeping the antenna lead half way between the antenna and main frame on the port skid supports. Ferrite bead thing with the motor lead is on the starbord side. And that Zoom gyro is an absolute piece of crap. It has been replaced by a Futaba Gy401.

I lost my infamous tag line.

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10-08-2005 01:25 AM  12 years agoPost 8
zoom boy

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N.E. Lincolnshire UK

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This is weird, I know about six people with zooms and out of us, the two most capable pilots of the group (myself and another) both regularly fly zoom 400s and they have needed little (and I mean seriously little) maintanance, and fly EVERY week.

I find it hard to believe that so many people say they are having as much trouble as they claim, for me and the others (save one, who isnt that experienced with helis) think its a very good model aside from the cyclic responce.

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10-08-2005 04:47 AM  12 years agoPost 9
Rob_T

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I agree, Zooms are pretty reliable. With my V1 the original tail gears were the only maintenance needed regularly (about every 2 hours of air time something would need replacing). Once I went to belt drive I needed no maintenance to replace worn out parts. Tail servos were the only part I had to replace due to wear out (maybe I was unlucky or maybe I had the gyro gain set too high but I went through about 3 tail servos). So far the V2 seems to be holding up as well.

That's not to say I dont need any replacement parts- but they're alway due to "dumb thumbs"

My Eco-8 is also as reliable, and costs me much less in spare parts. Being bigger I dont try to fly it in the garage or back yard- which is where most of my crashes happen (because I dont fly 3 mistakes high!). The blades on it must be close to 18 months old now! My Hummer and Piccolo are nowhere near as reliable!

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10-08-2005 11:40 AM  12 years agoPost 10
zoom boy

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N.E. Lincolnshire UK

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Yes the original tail gears where a PITA, but since I put the bevel ones on (about six months ago) I havnt had to replace them.

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10-09-2005 03:07 AM  12 years agoPost 11
RMSLINKERS

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Audubon, Minnesota

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My V1 is the best of all my small electrics as far as not breaking down from worn parts. Almost a year old and after the new beveled gears some good bearings in the tail shaft and gear box it flew for 6 months with no work needed. finally the input gear went south replaced it and all is well the last two months. My Trex CDE has had more problems in the last two months than my V1 ever did. Main shaft bearings went out in a couple of hours, swash separated, main gear stripped, tail servo went out, tail shaft comes loose so belt slips, paddles were unblanchable, canopy wouldn't fit, frame screws strip if you look at them or try to tighten them so things don't slip and more. It does fly great once you throw another $150 over the kit cost to fix the problems. Then there is my V2 lets see after three months there was the CDE canopy I bought and put on it when I was ordering Trex parts!. I guess that counts as a repair; or was it that I wanted to use my TP2100 pro lite in it so I can get some use out of it when the Rex is down for parts. Love my Shoguns just because they keep flying and cost my half what the rest do. No complaints from my point of view the Shogun is one of the best of them all.

If it isn't beating the air up it isn't flying

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10-09-2005 01:51 PM  12 years agoPost 12
omayhemo

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Texas - Yeehaw​ya'll!

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I've had nothing but trouble with mine, in fact I'm thinking of getting rid of it and getting the TRex. But I don't think the trouble is due to a bad design. I just can't find the problem because I'm new at this.

The tracking problem I've been having is still there, I can't get the blades to track, period. There is a 4" or greater difference at mid stick, when I get to full pitch (7deg) they snap into place.
I thought I had solved the problem, but I didn't.

See this thread...
http://runryder.com/helicopter/p1567843/#p1567843

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10-10-2005 06:59 AM  12 years agoPost 13
Rob_T

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Some sets of foam blades just wont track no matter what you do to them! (My theory is that the blades aren't stiff enough and twist under aerodynamic loads. Depending on where the "hinge" point is as they twist sometimes the blades just cant be made to track as the twist reinforces any tracking error).

Try any blade type other than the foamies! Like-90s and the EF woodies both track well without costing the earth! Glass and Carbon blades also track nicely but cost more.

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10-10-2005 01:43 PM  12 years agoPost 14
omayhemo

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Texas - Yeehaw​ya'll!

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I'd love the have the like90s, tried to buy them, but they seem to be out of stock on the website for weeks, and those guys are busy elsewhere these days. I think their heli store is dieing at the expense of their other business that is taking over.

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