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Low Head Speed Helicopters Low Head Speed Helicopter Setups and Flying info


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Old 07-18-2016, 02:44 PM   #1
bgymr
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Default Logo 400se stretch low headspeed

So last year I had a logo 400se i ran on 480mm blades. Loved it but sold it. Regretted it so I bought one again.

This time I streteched it using a Logo 10 belt and Logo 480xx boom. Now it runs 500mm mains.

I outfitted it with really light gear, like a goblin 380 motor, some plastic case jr servos, a smaller esc. Only place I didn't look for a weight savings was on the BLS251 tail servo.

Anyway, in this video you can see that it will run for 7 minutes easy. It only puts back about 1800mah into this pack. It's a very old battery and can't really take the abuse anymore. I believe if I had a 3300mah pack where I could get 2500mah into it after a flight, I would be able to push nine minutes. It's running 1700rpm vbar governed.

Jr3717hv
bls251
KDE500XF-925-G3
Hobbywing 60a v4
vbarish
zeal 500 and 80mm
19t pinion mod.5



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Old 07-18-2016, 03:08 PM   #2
im4711
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nice flight -> with 500 mm blades you should be able to bring HS down even further. Also I noticed at that blade size that the switch and rail blades had a wider chord giving you more lift at low rpm.
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Old 07-18-2016, 03:22 PM   #3
bgymr
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Thanks bud. I appreciate it.

That was my third flight with it. I ran it a couple times at 1600. It flies and can barely notice the difference in flight from 1700. But if I get in trouble I want the extra little umpth there to dig out. The formula shows that ideal HS governed is a little higher than 1700. If I find a 18 tooth pinion, I'll run it lower.

I have a 3s pack I'll try on it as well. I think it will fly at 1200 or even lower. But not anything worth flying unless its a hover competition.
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Old 07-21-2016, 02:13 AM   #4
apper001
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very nice flight man!!

with my standard 480 i get 6/7 minutes of flight with a 3K 6S pack. don't have a HS number
guesstimate 1850 rpm.

guess the best weight savier might be the pack weight.

did you weigh your setup with pack?
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Old 09-10-2016, 09:31 PM   #5
MHN777
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Funny post.

Sorry if I sound like a troll. But what you're running now, is the original Logo 10 or Logo 10 SE setup ... It was king in terms of flight times and reliability in its hey-day.

But thanks for your post- because I've been trying to look for a good low head speed e-heli...
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Old 09-12-2016, 10:09 AM   #6
bgymr
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I'm glad it was amusing.

It's a tough heli. And I mean tough. I can't believe the main gear doesnt strip after two crashes. I think the low headspeed helps because there isn't as much to energy to dissipate.

I love flying it. It's a great practice heli.
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Old 09-12-2016, 03:41 PM   #7
Koopyetz
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Nice flying, you're a good pilot. Seeing the possibilities of what you can do with 400 ( stretch) is encouraging.

Thanks for video and setup info.
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Old 09-18-2016, 09:52 AM   #8
MHN777
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Just saw your video...

I'm just gonna keep it hush hush and start saving up for a logo 400.
I'm a fan of light builds with good useable long flight time... I hadn't realised you put in a Goblin 380 motor... What battery pack were you using?
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