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Post by brakallie1 on Oct 10, 2012 23:13:17 GMT 1
My SC is less than a month old. I flew it today had a great short flight and wanted to work on landings. Went to start it up and it Reeves up and then just stop, turn it all off charge the battery, check all connections and it does the same thing. Any ideas? It is a stock super cub, so no chance of messing up any mods. Th-ks in advance, brakallie1
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Post by flydiver on Oct 11, 2012 1:05:36 GMT 1
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Post by brakallie1 on Oct 11, 2012 1:17:05 GMT 1
Thanks for the link I'll read up on it.
The hobbie shop where I bought the SC is sending a piece of the brain of the plane back to the manufacturer for a warranty replacement, however if it is the battery I've wasted a lot of great flying weather up here in Bend, Oregon.
He checked the battery and it gave the correct readings so we will see what happens.
I will post the results.
Thanks again,
brakallie1
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Post by flydiver on Oct 11, 2012 1:34:59 GMT 1
That's the other possibility, the well known lame ESC. Let us know if a new one fixes it.
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Post by toff on Oct 12, 2012 23:39:08 GMT 1
Lipo is shot.....I have a micro plane with 3.7v (single cell) lipos - One shows 4.20v, but discharges in roughly 20 seconds....full load recorded but reads 2.9v after 20 secs...(not me, bought second hand with the plane - now have a full load of 10 nanotech 160mah lipos - roughly 7 minutes of flight per). New battery will ease all your ills....but listen to flydiver, he's a total warlock when it comes to electickery!
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Post by wedoitall on Oct 14, 2012 2:06:59 GMT 1
mine was doing the same thing. while taxiing, if i used the rudder or elevator the motor would quit. if i was full throttle(or above 1/4) it didnt do it. i tried everything, so far by rebinding on a different model channel on my dx6i, everything has been good.
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Post by flydiver on Oct 14, 2012 3:28:40 GMT 1
rebinding on a different model channel on my dx6i, everything has been good. That might mean your throttle curve was setup inappropriately (or got screwed up) Set throttle to zero and MAKE SURE throttle trim is neutral. See your manual if you don't know how to do this. Put throttle WIDE OPEN (to the top). Plug in the battery. Wait for a couple beeps from the ESC. Pull throttle to ZERO (bottom) You should now get normal arming beeps from the ESC. Done - your throttle should be re-calibrated. By rebinding to a 'clean' channel you likely did essentially the same thing.
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Post by absolutmex on Oct 23, 2012 2:34:27 GMT 1
Good Evening to Everybody. I also had similar problem with my sc. i've tried just about everything to fix my problem. It started shortly after I bought my SC. 1st flight was good no problems. 2nd day 2nd flight. got it up in the air and the motor started cutting off and then back on and then off. i tried gliding the cub but I hit a gust of wind that brought my nose down and was too close to ground to bring back up. broke the front cowl. I read all kinds of threads to figure out what the problem may have been. I think that time was because I did forget to disable the ACT, but after fixing it, I had the same problem with ACT off. This time crashed and broke wing. I went to my local hobby shop where i bought the cub. replaced new motor, new esc. I fixed it. tested it out no problem. did a range test, no problem. went up did a couple of turns and again i had the same problem. what is going on? do I really have this bad of luck. I crashed it and broke the fuselage. glue and packing tape does wonders. ;D I was so disappointed that I had to redeem myself. I also have a mini cub. took it up right after i crashed my sc and flew the mini just fine. even changed the battery twice. I like my cub but if its going to cause so many problems, im not so sure if i should even invest more in it. I saw a thread about rebinding again, do you all think that it could be a problem with my tx? maybe upgrade to a dx6i? the only thing that has been constant is the tx so im not sure. i have also read something about the jumper, but is there a jumper on the new cub dsm? any help would be appreciated.
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Post by flydiver on Oct 23, 2012 7:11:31 GMT 1
You said you did a a range check? Was it a good one? Your story makes me suspicious of the TX, some kind of intermittent signal loss. Bad antenna connecton? Low batteries? Loose battery? Range test again with the plane strapped down or held by someone at 1/4 throttle while you move the TX around, rattle it, try and make it fail if there's something loose.
If you can find a known GOOD Spektrum TX to bind it it and do a GOOD range test then maybe a flight, especially with a decent pilot so we know it's not newbie error.
You should not have to worry about a jumper. You SHOULD disconnect the ACT plugs.
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Post by ginginho on Oct 23, 2012 9:28:20 GMT 1
Do you have a battery tester? Have you run the aircraft on the ground to near full power (needs to be braced so that it doesn't escape) and did it cut out then? My first thoughts are that your battery is dipping below the LVC as Fly has sort of aluded to. If this is the case you've either got a poor pack or charger.
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Post by flydiver on Oct 23, 2012 16:53:37 GMT 1
I was thinking more of the TX batteries, but you have a point-it could be a power battery issue. Maybe a bad connection or just a low or lousy battery.
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Post by absolutmex on Oct 24, 2012 3:25:14 GMT 1
Yes I did a range check. I had my friend hold the plane about 50 feet away. i got the throttle up to about 1/2 and then started moving the rudder and elevator all at the same time. no problem at all. bad antenna connection? i dont know. I have not messed with the receiver at all but i can see the little antenna is there. As far as the batteries, the guy at the hobby shop checked it and said the battery was fine. I dont think it was a lose battery problem. it seems to be very snug in the connection. I use the DX4i that came with the sc. do you all think i should upgrade my tx? If so which one do you all think is a good choice? a dx6? dx7?? I will see if one of the guys at the hobby shop will fly it for me. I took it in today to the hobby shop for them to take a look at it. Hopefully they will get back with me soon. I will let you all know the results. I also disconnected the ACT in the receiver. I dont have a battery tester but I think the guy in the shop tested the battery and told me it was good to go. You mentioned something about the tx batteries... doesn't the dx4i have a low battery indicator in it to where it will tell you when you need to change the batteries?
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Post by absolutmex on Oct 26, 2012 2:50:58 GMT 1
well i got my sc back today. the guy said he couldn't find anything wrong with it. so idk. I brought it home and tested it. it cut out completely and wouldn't come back. i jiggled the battery cable a little and it came back on. so Im thinking its a loose connection with one of the battery cables. after i moved it around i put it to full throttle and moved rudder and elevator at same time trying to get it to cut off while shaking the plane a little. nothing happened. I dont understand.
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Post by iandhunt on Oct 26, 2012 5:13:16 GMT 1
Mine was cutting off due to throttle "trim" being maxed out......whenever I went to full power it would cut out and eat snow nose first......I even had my GoPro on board when it happened. I mark my batteries....(batt 1, batt 2).....so I can rule out the possibility of a lame battery. Just my best guess.....but after I trimmed it down it stopped doing it.......Just my two cents......
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Post by flydiver on Oct 26, 2012 6:28:31 GMT 1
Why was throttle trim maxed out? Why is anyone messing with throttle trim at all?
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