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February 21, 2019, 17:36:29 PM

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Author Topic: Flaps as inner ailerons?  (Read 1225 times)

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Offline Norman Carter

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Flaps as inner ailerons?
« on: December 31, 2015, 15:44:36 PM »
I am just setting up my Alpina 3001 and ASW 27 with my new Tx. I have been using the flaps as aux ailerons with a mixer but not sure of the optimum throws. I have set them up at about 50% of the aileron throw, does this seem about right?

Norman
Norman C


Offline Bad Raven

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Re: Flaps as inner ailerons?
« Reply #1 on: December 31, 2015, 16:59:36 PM »
Have only done this a couple of times on wings where the outer ailerons were not effective enough to stunt fly to my satisfaction (I like nervous).

In those cases I set exactly the same throws as if it was one long strip, and this worked well.
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Offline Cactus

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Re: Flaps as inner ailerons?
« Reply #2 on: December 31, 2015, 17:09:13 PM »
on most 4 surface mouldies the flaps don't move up much, so you set them for about the same up/down movement which is about 50% of aileron normally.
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Offline slopeflyer

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Re: Flaps as inner ailerons?
« Reply #3 on: December 31, 2015, 17:51:49 PM »
My alpina responds well to a aileron flap mix.  I think I have mixed in about 5mm up and down.  Ailerons are set at about 25 up  and about 15 down.

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Offline satinet

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Re: Flaps as inner ailerons?
« Reply #4 on: December 31, 2015, 19:27:22 PM »
From what I remember conventional wisdom is to set the flaps to about 1/3rd of the ailerons


Offline Norman Carter

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Re: Flaps as inner ailerons?
« Reply #5 on: January 01, 2016, 12:56:04 PM »
Thanks for your prompt replies. As Cactus says the Aplina flaps don't move up much so will start at about 5mm each way on a switchable mix. At least with my new Weatronic Tx it is easy to set this sort of thing up - only trouble is it is far too clever for me!!
Norman C

Offline EricF

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Re: Flaps as inner ailerons?
« Reply #6 on: January 03, 2016, 17:02:15 PM »
On my Hmodels ASH 25 Mi, the designer recommends that the ratio when using speed flaps in conjunction with aileron is 1:2, i.e. 50% of the aileron throw.

See the scan of the instructions provided by the designer for detailed info - http://scalesoaring.co.uk/phpBB3/download/file.php?id=3362&mode=view
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Offline Allen the soarer

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Re: Flaps as inner ailerons?
« Reply #7 on: January 06, 2016, 10:20:58 AM »
My Alpina 3001 has 50% Fl-Ai
And a shed load of Diff.
Max up (about 20mm) and 8mm down
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Offline Ray W

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Re: Flaps as inner ailerons?
« Reply #8 on: January 10, 2016, 18:00:53 PM »
I have 50% on my eclipse but switch selectable


Offline Norman Carter

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Re: Flaps as inner ailerons?
« Reply #9 on: January 11, 2016, 08:23:26 AM »
I can't get much "up" flap on my Alpina due to the flap hinge which allows only about 10mm up (Ready covered version). Agree with the comment about having a switch for the coupling - essential.
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Offline Allen the soarer

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Re: Flaps as inner ailerons?
« Reply #10 on: January 11, 2016, 15:32:46 PM »
Norman
Mine only disable when crows are deployed.
you wont need to worry about roll rate as its very tame even with 50% flaps and all the ailerons you can get :)
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