RE: KYOSHO F-16 Fighting Falcon EDF DF55  
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All Forums >> Electric Aircraft Universe >> Electric RC Jets >> RE: KYOSHO F-16 Fighting Falcon EDF DF55
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RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 8/12/2008 2:46:59 AM   
dLdV


 

Posts: 3
Joined: 5/28/2007
From: , NJ, USA
Status: offline 		Gearhead8,

Mine really likes to drop its nose. Did you move the CG farther back than the instructions call for? After two flights I'm debating whether tis nobler to make it a little tail heavy or just adjust the tailervators up a bit.

(in reply to Gearhead8)
       Post #: 51

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 8/12/2008 8:29:26 PM   
Gearhead8


 

Posts: 28
Joined: 1/24/2005
From: E, CA, USA
Status: offline 		what battery pack are you using? what is the weight of the battery pack? Is your airplane balanced at what is listed in the instructions?

(in reply to dLdV)
       Post #: 52

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 8/26/2008 11:09:46 PM   
gosa


 

Posts: 9
Joined: 7/7/2008
From: , LUXEMBOURG
Status: offline 		After a long pause, I have flown the F-16 (or what is left of it ) again today. Ideal conditions, new batteries and a visible trim-scheme this time..

It flew very well on the first 2 flights, my elevon repair (I had to replace 1 and made it out of Depron) worked fine and the plane was very contollable. Settiing the servo throws to 150% helps somewhat too. I also go the landings ok, bleeding off more speed, but it still lands fast..

On the 3rd flight, the motor cut after about 5 seconds and I suspected the old battery problem (I'm using a couple of HongKong Lipos and the first one got me as much flight-time as the flight-power)
I managed to land it ok, but then testing it, it kept on cutting out. I checked the battery ( I have a little meter I can connect to the balancing connector) and the voltage stayed over 4 Volts even under load.
I suspect the ESC overheats, as after 10 minutes waiting, it worked again. Did anyone of you experience the same problems? I waited approx 5 miuntes between the flights.

(in reply to Kyosho)
       Post #: 53

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/1/2008 6:12:45 PM   
titaniumr


 

Posts: 5
Joined: 11/6/2006
From: , SINGAPORE
Status: offline 		Hi gosa,

I experienced the same for my TWO F16s. First session, did three flights on 3 batteries without problem. Second session on first flight, power drop within 20 secs. Tested remaining fully charged bats on the plane with same results. My bats are 22C, 1300mah 3S. The volts showed 12.1, 12.15, and 11.90. Changed out to a 40A esc and heat sink the motor. Same results again. Used a Korean Lipo speced at 20c 1250mah 3s, held the plane in hand for 1 min at full throttle, no problem. So I suspect it is my china lipos.

I will buy better lipos and try again. I may stick to Kyosho recommended 900-1200mah cos I think these are normally 15C and won't cook the motor?

(in reply to gosa)
       Post #: 54

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/1/2008 6:21:39 PM   
Gearhead8


 

Posts: 28
Joined: 1/24/2005
From: E, CA, USA
Status: offline 		Give the Flight Power 1345 EVO LITE a shot.

(in reply to titaniumr)
       Post #: 55

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/2/2008 6:58:32 AM   
gosa


 

Posts: 9
Joined: 7/7/2008
From: , LUXEMBOURG
Status: offline 		Thanks for sharing your experiences. I have a flight-power EVO-LITE 1345 as well. I flew it on one of the first flights, so I couldn't compare. The HK Lipos give me as long (or short.. 5min) flight-times, but they are 15g heavier.
I connected a voltage monitor to the balancer plug while testing it and the cell voltages stayed over 3.6V at full load but it would still cut after a few seconds. 1 hour later, it worked ok agian, so that I suspect the ESC having overheated.
I'm waiting at least 10-15min between flights now and had 4 flights in an hour recently w/o prob. Ok, the air-temp is 10-15C lower than in Summer now, that might help as well..
When I cut it open for maintenance next time, I will remove the shrink-tube from the ESC for better cooling and turn it around so that the heat-sink is in the air-flow.

(in reply to Gearhead8)
       Post #: 56

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/4/2008 4:25:43 PM   
titaniumr


 

Posts: 5
Joined: 11/6/2006
From: , SINGAPORE
Status: offline
quote:

ORIGINAL: gosa

Thanks for sharing your experiences. I have a flight-power EVO-LITE 1345 as well. I flew it on one of the first flights, so I couldn't compare. The HK Lipos give me as long (or short.. 5min) flight-times, but they are 15g heavier.
I connected a voltage monitor to the balancer plug while testing it and the cell voltages stayed over 3.6V at full load but it would still cut after a few seconds. 1 hour later, it worked ok agian, so that I suspect the ESC having overheated.
I'm waiting at least 10-15min between flights now and had 4 flights in an hour recently w/o prob. Ok, the air-temp is 10-15C lower than in Summer now, that might help as well..
When I cut it open for maintenance next time, I will remove the shrink-tube from the ESC for better cooling and turn it around so that the heat-sink is in the air-flow.


Thanks. I got a pack of korean cell to test out tomorrow if possible - the better ones I can find here in Singapore - 1300mah, 3s, 25c. With 40A esc, stock motor, the bat can only supply 32.5Amp. Will this setup work? Rather confused now as was recently told that 40A amp will draw this amount from the bat and will bloat it since it can only supply 32.5A. Some told me that 40A esc is better than stock with higher amp rating capacity to take on more current without thermal shut down. Appreciate your input.

(in reply to gosa)
       Post #: 57

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/4/2008 5:21:24 PM   
gosa


 

Posts: 9
Joined: 7/7/2008
From: , LUXEMBOURG
Status: offline 		The AMP rating of your ESC is the maximum the ESC will tolerate. A 40A ESC will easily cope with the 20-22A max current of your stock motor setup, so will the battery. Watch out though, on most no-name batteries, if there is only one C rating, it is most likely the peak rating and the constant C rating is about 2/3 of that, but even with 18C, your battery should cope with the max current of the F-18.
I'm using Turborix 1300 25C and they get hand-warm after 5 min of flat-out flying. I seem to have problems with the stock ESC though not being able to cope with several flights in a row...

(in reply to titaniumr)
       Post #: 58

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/5/2008 1:22:11 PM   
titaniumr


 

Posts: 5
Joined: 11/6/2006
From: , SINGAPORE
Status: offline
quote:

ORIGINAL: gosa

The AMP rating of your ESC is the maximum the ESC will tolerate. A 40A ESC will easily cope with the 20-22A max current of your stock motor setup, so will the battery. Watch out though, on most no-name batteries, if there is only one C rating, it is most likely the peak rating and the constant C rating is about 2/3 of that, but even with 18C, your battery should cope with the max current of the F-18.
I'm using Turborix 1300 25C and they get hand-warm after 5 min of flat-out flying. I seem to have problems with the stock ESC though not being able to cope with several flights in a row...


Very clear and logical. Thanks for sharing. You plan to upgrade your esc? Btw I usually only see one C rating, say 15C or 25C... Do you mean a pack can have several ratings of C on it?

(in reply to gosa)
       Post #: 59

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/5/2008 3:06:45 PM   
gosa


 

Posts: 9
Joined: 7/7/2008
From: , LUXEMBOURG
Status: offline 		Usually on brand Lipos you will see a continous C rating and a peak C rating (tolerable for a few seconds)
If it is not specified which C is meant, assume the worst case and consider it the peak rating. The continous rating will then be approx 2/3 of that value.
That's what I tend to do to have safety margin.

(in reply to titaniumr)
       Post #: 60

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/7/2008 4:21:26 AM   
titaniumr


 

Posts: 5
Joined: 11/6/2006
From: , SINGAPORE
Status: offline
quote:

ORIGINAL: gosa

Usually on brand Lipos you will see a continous C rating and a peak C rating (tolerable for a few seconds)
If it is not specified which C is meant, assume the worst case and consider it the peak rating. The continous rating will then be approx 2/3 of that value.
That's what I tend to do to have safety margin.


Thanks Gosa. I will be testing out coming weekend.

(in reply to gosa)
       Post #: 61

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/15/2008 3:39:48 AM   
mikec456


 

Posts: 141
Joined: 11/17/2004
From: murrieta, CA, USA
Status: offline 		I want to paint mine but wonder if I can use paint other than Krylon H2o. Any thoughts? I have plenty of H2o put it comes off too easy.

(in reply to titaniumr)
       Post #: 62

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/15/2008 6:37:08 AM   
Kyosho



Posts: 153
Joined: 4/9/2004
From: Lake Forest, CA, USA
Status: offline 		you can use Tamiya "AS" numbered sprays, of for best results use Tamiya airbrush paints, or Model Masters acrylic airbrush paints.

(in reply to mikec456)
       Post #: 63

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/16/2008 4:40:51 AM   
mikec456


 

Posts: 141
Joined: 11/17/2004
From: murrieta, CA, USA
Status: offline 		Ok just finished airbrushing mine today and it's about ready for it's madian flight. I'm running a Eflite DF420 on a 3s 1500Mah E Power 20c battery. I'm pulling 24 amps and around 210 watts. My total weight with battery is 15oz. I tried and Align 2100/22c and got 24amps/210 watts, A Thunder Power 2070 25c and got 28amps/270 watts and a Mystery 2200 15c which got the highest rating of 30 amps/310 watts.

Does anyone have any numbers to share? Is 210 watts enough power? What are you guys seeingwith the Evo Lite 1345?

(in reply to Kyosho)
       Post #: 64

RE: KYOSHO F-16 Fighting Falcon EDF DF55 - 10/16/2008 7:29:36 AM