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Old Dec 15, 2012, 09:50 AM
UMs & parkflyers... for now.
davidterrell80's Avatar
United States, VA, Herndon
Joined Apr 2012
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You probably smelt a bit of insulation heating up but, it was also your battery that was at risk. Most ESC's have a bridging diode that will short the battery if it is connected backwards. I made a quick sketch to illustrate. I hope it helps.
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Old Dec 15, 2012, 12:16 PM
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TheLeabres's Avatar
India, DL, New Delhi
Joined Sep 2010
820 Posts
Thanks for the reply. I definitely saw smoke and of course the smell was there.
Is it possible the ESC capacitor burnt out so that the ESC still works with a bad capacitor? At any rate, I've already replaced the ESC which by the way works like nothing happened, full tests to WOT for 10 seconds with watt meter shows same performance. The smoke came from the ESC.
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Old Dec 15, 2012, 03:16 PM
UMs & parkflyers... for now.
davidterrell80's Avatar
United States, VA, Herndon
Joined Apr 2012
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Perhaps put a 0.1 uF capacitor across the battery leads where it goes into the ESC, just in case the one on the board fried.
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Old Dec 16, 2012, 12:28 PM
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scotland
Joined Jul 2003
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Hi all ,
just thought I'd post a qick picture or two of the way I am mounting the motor on my FW 190...3mm ply four 3mm bollt four 3mm tubes loads of locknuts. I have had it turning at full revs ,and aftrer I got around to balancing the prop all the vibration stopped... will post more pics as and when I get around to building a bit more

gordy
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Old Dec 16, 2012, 01:19 PM
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My big EPO Formosa took another nose dive yesterday. What's that about, anyway. Controls were all working when I got to the crash site. Didn't power up the motor 'cuz the prop was broken. I might have hit cutoff, I wasn't really paying attention.

Just like last time, it was low off the deck, not moving fast at all. Probably stalled it. The good news is that there's almost zero damage. No dented or crushed foam at all. That old EPS 'Mosa would have been shards. I was flying over soft mush dirt (not quite mud) so I'm sure that helped.

I'll be adding more lead to the nose, and flying it on 4S next time. She was kinda sluggish on 3S, but a lot more zippy on 4.
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Old Dec 16, 2012, 08:24 PM
I live my life 8oz at a time..
arnav's Avatar
United States, FL, Miami
Joined Nov 2011
2,474 Posts
wooff, lucky!

What servos are you using? My second Mosa II developed this nasty habit of snapping and heading straight to the ground without a warning and for no apparent reason. Some I was able to recover from, some I didn't until all the repairs were getting so frustrating that at JDMjim suggestion I retired here (and I am happy I did as i just built another + got a Balsa frame). I think it was the cheap servos I put in it (even tough they were 17G MG monster ones), The current Mosa II is also all over the place becuase of the servos that are in it. With good hitec or similar I bet it will fly really well. I do want to treat it to better servos one of these days. The other day a kid stopped by at the field with a plane there was no way he could fly so I flew the Mosa with him. On the landing there was visible flutter on the ailerons..

I can't see a reason to fly 4S in it. What motor and prop are you using?
With a cheap headsuprc powerup 15 motor and an 11x8 prop I generate between 550W at peak. it is a rocket at 500W (which is why I do want to put in it better servos as it is a lot of fun to fly it like that)!

Come to think about it, pushing it hard at 500W with pseudo-3D flying and hard aerobatics would definitely kill cheapy servos so it is to be expected (especially with those big control surfaces).
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Old Dec 16, 2012, 08:32 PM
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Arnav: The motor's a Powerup 480, I forget which Kv version. The servos are a mix of GWS Naro and E-Max. First Mosa-II was seriously overpowered and lots of fun. The Powerup 480 doesn't quite have the oomph for an EPO Mosa-II on 3S. But it perked up nicely on 4S.
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Old Dec 16, 2012, 08:58 PM
I live my life 8oz at a time..
arnav's Avatar
United States, FL, Miami
Joined Nov 2011
2,474 Posts
Yeah, makes sense. I just looked up the specs of one of the versions and at 4S it runs at 400W+ which would in fact make it fly better so you were right...
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Old Dec 17, 2012, 07:55 PM
Actively makin humans obsolete
Razor_Racer's Avatar
Northern Virginia
Joined Jul 2007
772 Posts
GWS Micro Stick? Anyone have info on this? Is this new?
http://www.gwsus.com/english/product...oslowstick.htm
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Old Dec 17, 2012, 08:23 PM
In thrust we trust
phoam's Avatar
Aguanga, Ca
Joined Mar 2010
1,227 Posts
There was talk of this Micro Stick in the vendor forum earlier this year, but this is the first time I've actually seen one. I don't believe they've hit the market yet. I need one!
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Old Dec 19, 2012, 08:07 PM
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TheLeabres's Avatar
India, DL, New Delhi
Joined Sep 2010
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If you want to go micro, here's mine:
It's not a micro slow stick but I can always take out the guts and build a micro stick. And if you can fly one of these, you can fly anything.

P.S.Not trying to hijack this thread

Air Hogs F18 Interceptor Review and test flight (2 min 23 sec)
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Old Dec 20, 2012, 02:54 PM
Right Rudder
PittSpecial's Avatar
USA, FL, Orlando
Joined Nov 2010
8,996 Posts
Slow Stick with 808 Key Chain Camera!

Hi Guys!

Just having fun with my new 808 Key Chain Camera looking AFT on top of my GWS SLOW Stick. It is powered by the BP Hobbies A2217/9 Brushless motor, a staple selection and setups to many of my Park Flyer size RC Airplane Models.

Recorded on location, Moon Port Modelers RC Club in Titusville, Florida and early in the morning, Thursday, December 20, 2012.

Enjoy!
GWS Slow Stick RC Electric Airplane model with 808 Key Chain Camera looking AFT 12-20-2012 (5 min 41 sec)
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Old Dec 21, 2012, 06:51 AM
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TheLeabres's Avatar
India, DL, New Delhi
Joined Sep 2010
820 Posts
Yup, I have a Slow Stick always ready on stand by and two more NIB unbuilt kits hoping to get some buddies to do formation flying.

Classic, timeless, lots of mods available for gear and mount, biwing... hope GWS never discontinue the model unless they put out a revision 2.
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Old Dec 21, 2012, 10:22 PM
In thrust we trust
phoam's Avatar
Aguanga, Ca
Joined Mar 2010
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...
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Old Dec 22, 2012, 01:26 AM
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TheLeabres's Avatar
India, DL, New Delhi
Joined Sep 2010
820 Posts
Wow those are inspring photos for the Slow Stick fans here. Looks like after I build my GWS Mustang and Spit, the twin boom SS is the next in line.

5 days ago, my Corsair went into the death spiral from 40 feet up just high enough where I couldn't revover and just enough to torture me for those 1.5 seconds watching it in slow mo that ended with the all too common sickening thud.

I used epoxy/glass cloth to repair the fuse, wings, motor mount and she flew like new this morning with a freshly installed Towerpro 2409-12T. The old motor, Towepro 2408 didn't survive the last crash.

Also, flew two batteries' worth with the 'Mosa 1. Of all the GWS foamies I've flown, when the Mosa hits the perfect landing, it just makes you feel a pro! Something about the fuselage length just makes her look that much more graceful.
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