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Mar 05, 2021, 01:22 PM
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Well decided to go 4s on mine. Already have some 880kv 2216's and Hyperion had some G7 4s 1200ma lihv packs dirt cheap so I ordered 3 of them. They weigh 135g that is very close to the 3s 1600ma packs I have been running.

Imho a little extra weight doesn't really effect this plane. And I never thought that it felt heavy also seemed light flying to me
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Mar 05, 2021, 01:41 PM
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I have two of these planes, one flown with 1000/1100mAh pack, the other with 1600mAh packs, and I think the heavier one flew like a brick. I didn't fly it often, and when I did, I just about planted it into the ground on the first flight every time just because I'm used to how the lighter plane flies.

Since I flew it so rarely and it was so heavy, I ended up making a low wing plane out of it. That made it fly even worse!
Mar 05, 2021, 02:15 PM
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Seems like they do tumbles and high energy maneuvers better when they are a little heavier. But then again I'm using 11x5.5 props most of the time . So maybe that adds to slow speed stability.

But I have always flown the 38" planes with 3s 1600ma packs and 11" props. And auw around 625g-650g.
Mar 05, 2021, 02:31 PM
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Ooops my bad 650g without the battery
Mar 05, 2021, 02:40 PM
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From one of my old posts:

Quote:
Blue one, with the 1100mAh (91g) battery: 705g AUW
Red one, with 1600mAh (121g) battery: 761g AUW
Mar 05, 2021, 03:45 PM
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Yep

Guess they seem to fly light to me. Just will fly fast also. But my 3dhs 41" edge does feel heavy and sluggish to respond to controls and power. But these 38" planes seem light and responsive.

Guess it's a matter of perspective. And flying styles
Mar 05, 2021, 04:24 PM
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Huh.. My 48" Skywing Slick is very quick and nimble. More so than the 38" planes (FM Edge and FM Slick). Pretty much the same for my 55" Skywing Edge. The 60" FM Slick isn't as nimble, though. It feels heavy.
Mar 05, 2021, 08:21 PM
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Hmmmm wow . Just took a flight on my skywing 55" pp edge. The FM 38" edge seems to fly very similar to me anyway.
Mar 05, 2021, 08:29 PM
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Heck the FM 38" will flip and wall knife edge walls . Like it's on a wire. Easily within its length. But then again I use 11" props so prop wash is a bit better then 10".

Even my old 38" epp skywing edge with a gws 11x7 will do crazy knife edge spins. Flip in it's own tracks and knife edge wall fairly decent.
Mar 05, 2021, 10:57 PM
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Man I forgot that I put a hobby eagle a3s2 gyro in my fm edge that's why it is a little on the heavy side now. Them things are heavy for this size of plane.

If I remember correctly mine without the hobby eagle was just around 680g -690g with the 135g 1600 pack
Mar 09, 2021, 11:10 AM
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The Hyperion g7 4s 1200ma lihv batteries arrived yesterday. And I did some testing during pack break in with the Emeter 2. The gws 11x7 and apc 11x7e are in the prop database in the Emeter. So it calculates thrust with those props.

Factory supplied FM prop is 383 watts at 8760rpm

Generic 11x5.5 black prop Value hobby used to sell is 307watts and 9651rpm

Gws 11x7 362watts at 8897rpm Emeter calculated 1830 grams of thrust

Apc 11x7e 382watts at 8880rpm Emeter calculated 1803 grams of thrust.

Interestingly the supplied prop is a power hog. I have a few more props to test. A xoar 12x4, hj 10x4.5, generic 11x5, apc 10x5.5mr, and a eflite 12x4
Mar 09, 2021, 11:40 AM
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Quote:
Originally Posted by jammied
Interestingly the supplied prop is a power hog.
Probably because it's carbon fiber. The leading edges are rather thick compared to the knife like edges of an APC e-prop. I noticed similar results when trying a nitro prop (whose leading edges are blunt like the cf prop) in place of an e-prop on my Tundra.
Mar 09, 2021, 10:04 PM
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Probably so

Done more prop testing/battery break in

Hjc 10x4.5 carbon fiber was almost identical to the FM carbon fiber prop in terms of watts and rpm

10x5.5mr 330 watts and 9592rpm

Gem fan 11x5 from buddy rc 290watts at 10,300 rpm

Also tested the 10x5.5mr on the omega 72 on a hv g7 1800 3s 361 watts and 9737 rpm so the sunnysky 2216 880kv v2 isn't quite into that area both the omega and sunnysky were at 72% of KV*v . The sunnsky measured 860kv and the omega measured 1168kv. Maybe the Sunnysky 2216 v3 880kv would keep up with the omega.

But the 4s on the 2216 880 v2 motor is still alot better then almost all of the other 72g motors that I have. The v3 version would probably be a direct competitor with the best of the best
Last edited by jammied; Mar 09, 2021 at 11:08 PM.
Mar 13, 2021, 08:31 PM
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The nimh pack in my radio give up the ghost today. My 38" FM edge bored a hole into the earth!!

Only had 2 flights on it this year and only 2 flights on 4s. The 4s upgrade is well worth it!!! The numbers on paper dont show the increase in torque. Just set the throttle and forget it in hover and the increase in vertical performance is also alot more. I ran it with the apc 11x7e . And flew hard and was close to 6 minutes on the first flight and the pack was at 3.75v .

I debated whether to order another FM 38" or a Skywing. I ended up ordering a 38" Skywing edge from Northwest rc. Also have a sunnysky x2216 880kv v3 motor on the way. Might pick up some 4s 900ma 45c packs that weigh 100g to try out also.

Hopefully the Skywing 38" edge is a good one
Mar 14, 2021, 04:44 AM
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14 mars 2021 (0 min 17 sec)

I am going to try this motor in the air first to see how the performance are.
It’s the 2806.5 1300kv that I bought with a 10x6 prop


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