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Electric Ducted Fan Jets Discuss electric ducted fan jets here including setup tips, power systems, flying techniques, etc.

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Old 12-08-2013, 03:35 AM   #1
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Unhappy Help help

Low & high rates & expo elevator & airlons would not pull up on low rate 50% & 60% expo and she went into the ground on maiden all repaird but I need advice on this rates to give me half descent controll on low rate guys I'm running 4s 1800 mah as far forward towards the nose in battery compartment does it have to come back a little if so how much or is it sweet there any help from you guys would be great cheers Aaron Melbourne Australia
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Old 12-08-2013, 03:56 AM   #2
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what kind of EDF? Its makes a difference

Too many hobbies, and not enough time!
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Old 12-08-2013, 03:58 AM   #3
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Default Thanx for reply

Originally Posted by waytooslow View Post
what kind of EDF? Its makes a difference
Stinger 64 mk2
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Old 12-08-2013, 04:03 AM   #4
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Default Rates & expo for low & high

Originally Posted by ahodges View Post
Stinger 64 mk2
Was screwed on low rate & expo was 50% &60% expo & she would not pull up and went into ground
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Old 12-08-2013, 04:12 AM   #5
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Originally Posted by ahodges View Post
Was screwed on low rate & expo was 50% &60% expo & she would not pull up and went into ground
pop over to the stinger thread -- you will get lots of help (I have replied there)

Too many hobbies, and not enough time!
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Old 12-08-2013, 04:17 AM   #6
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Default Cool

Will do
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Old 12-08-2013, 04:18 AM   #7
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Will be happy if she fly ok on these rates that's all I want cheers
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Old 12-08-2013, 06:06 AM   #8
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Originally Posted by ahodges View Post
Low & high rates & expo elevator & airlons would not pull up on low rate 50% & 60% expo and she went into the ground on maiden all repaird but I need advice on this rates to give me half descent controll on low rate guys I'm running 4s 1800 mah as far forward towards the nose in battery compartment does it have to come back a little if so how much or is it sweet there any help from you guys would be great cheers Aaron Melbourne Australia
Don't know about a lot of wattflyer readers out there, but I learned my lesson on those Expo settings during a maiden flight of a giant scale model several years ago.

The problem was, the expo was set at 40% or so. And, the elevator was so far out of kilter, even when the elevator trim was run to full up trim, the model still dove for the ground.

So, the model had to be flown while holding up elevator. And, that elevator was in the expo region, so just slightly moving the elevator stick up or down resulted in wild airplane climbing or diving. The model was landed in one piece, but the pilot learned a few new swear words in the process.

Ever since that flight, all of my maiden flights have been with zero expo. After the model was trimmed out, then expo was added as needed for reasonable flight control.

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Old 12-08-2013, 06:09 AM   #9
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Default Thank you

I've taken expo out on low rate elevator & at 60% rate so hopefully it mite be a little more forgiving
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Old 12-08-2013, 06:59 AM   #10
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Double check your cg too.
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Old 12-08-2013, 07:03 AM   #11
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Unhappy Cg stingrer 64mk2 4s lipo 1800mah

Went buy the directions nose heavy but not sure how far to put battery back boys Any ideas
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Old 12-08-2013, 05:04 PM   #12
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Put the battery wherever it has to be to get the correct cg. You did balance it with the battery in it, right? (Sorry to ask, but it's been done before. ) If it's still nose heavy with the battery as far aft as it can go, you may have to resort to adding weight in the tail.
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Old 12-08-2013, 09:17 PM   #13
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Thumbs up Ok

Hi followed instructions & def, nose heavy been advised move back 10mm, from aft see how that goes cheers mate
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