This is from my old 9C Web Pages. I'm sorry I no longer have web space
available but I will be glad help any time I can.
Maurice
The Hidden Secret of OFST
One secret most miss is OFST for Ch. 5 & 6. Futaba only gives 45 deg. flap
travel off the throttle stick. Most users, to overcome the lack of travel
and obtain 90 deg. flaps, use an extra long control horn on the servo or the
hole closes to the flap on the flap horn to get the travel. This makes it
almost impossible for the ailerons to line up with the flaps in camber. But
using 2 mixers with OFST as master for 5 & 6 allows you to change center of
the servo. I would not suggest going past 70% or you will have little or no
end point adjustment to balance the flaps later. The best set up is to use
the same servos, the same length servo arms and the same hole position on
those arms for flaps and ailerons. The more accurate the servo the more
accurate the camber a flap setup. Use End Point adjustment to obtain
maximum throw and balance the two channels.
The use of mixers 2 & 3 are just my preference.
In the ADVANCE Menu
Mix 2 MIX - ON
MAS - OFST
SLV - FLP1
SW - C
POSI - NULL
RATE - 0to70
Mix 3 MIX - ON
MAS - OFST
SLV - FLP1
SW - C
POSI - NULL
RATE - 0to70
----- Original Message -----
From: "Luz, Marlon N" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, April 18, 2004 8:20 PM
Subject: [RCSE] FW: F3J - 9CAP (butterfly) - 90 degree flaps.
> Wondering if someone could help or already had problems on trying to
> get full flap servo travel on the 9cap for channel 5.
> The plane is a brand new eraser xtreame dbox +tail, futaba 9cap,
> futama PCM receiver and hitec 5125 digital servos. Mode is Glid2flp.
> Here is the challenge, at least to me :). Before activating all
> mixes, I assembled the right wing flap, connected to channel 3 to test
> geometry and full deflection. Perfect 90 degrees ...looking ok, time for
the
> left flap..same thing, connect on channel 3 to test and 90 degree.
> Both flaps tested !!! Ok, easy....now time to mount the plane and
> start playing with the mixes. Right flap on channel 5, Left flap on
channel
> 6, right aileron on ch1 and left on ch7.
> Activating butterfly...here is the problem... can't find a way to
> make the servos connected on channel 5 and 6 to have the same travel as
when
> they were connected on ch3. Seems like the 9cap limits the total travel on
> channel 5 and 6.
> Function "end point" only works at one end of the travel no effects
> on the other. On butterfly, tried to set the flap to 100%, but at 60% the
> servo is already at max travel...but mechanical, the servo still has a lot
> of travel to go.
>
> Tks in advance for those who might take their time to help.
>
> Best Rgds,
> Marlon
>
>
>
>
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