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Flap Settings ?

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Flap Settings ?

Posted: Fri Feb 17, 2012 5:46 pm
by Rick Harper
Dear Fellow "Rebellers" ;

G'day from below !

My wife and I have been fortunate enough to be given a "lend" of a vacant factory nearby in
which to assemble our Rebel so we can fit the struts (now done), connect the flaperon controls
(which is where we are up to), make the wing root and strut fairings.

Our problem is :....we cannot find what angles to set the various stages of flap notches at.
I have asked a Rebel builder here (in Australia), but he says that he doesn't know what the
angles are supposed to be either.

Can anyone out there please advise what angle / degree of flap is recommended for :

1) The "Reflexed" position ( I get about 6 degrees with the setup I have now).
2) First stage of flap
3) Second stage of flap
4) Third stage of flap
I might add here that I seem to get about 6 degrees of UP (with no aileron input)...and
26 degrees of down ( with no aileron input )

With the flaperons in the 26 degree down position , and the aileron input at FULL , the lower
side gets to the "required" 40 degree angle of droop.... but it LOOKS like W...A....Y too
much deflection down to me... I'm thinking how much drag it must create !!!
(or am I just being to conservative here ?!?).

Any advice will be gratefully received !

Thanks

Rick & Wendy Harper
16 Tor rd, Dee Why,
N.S.W. 2099
Australia
rjwh@ozemail.com.au (rjwh@ozemail.com.au)
rjwh56@hotmail.com (rjwh56@hotmail.com)
Ph : 02 9971 7889
Mbl : 0416 041 007
Fax : 02 9938 1480
O'seas Ph : 612 9971 7889
O'seas Fax : 612 9938 1480

Flap Settings ?

Posted: Fri Feb 17, 2012 5:46 pm
by Bob Patterson
Hi!

Must be another of those "I thought it was detailed in the manual ...."
things ! :-(

My recollection is that the flap increments are all supposed to be
6 degrees - 6 of up, 6, 12, & 18 of down. We add an extra 'up', for a
max. of 12 degrees 'up' for Rebels with more than 115 hp. This seems to
give an extra 2 or 3 mph....

We get someone to push up on the flapperons to simulate air loads
when adjusting for neutral - this compensates for the slop in the cable.

Having exact angles is really not very critical - a few degrees either
way likely won't be noticeable, in case you don't have very accurate
indicators. We've re-adjusted ours "by eyeball" on occasion.

Hope this helps ... Sounds like you'll be flying soon - GREAT !!!

....bobp

------------------------------orig.------------------------------------------
At 10:21 PM 3/26/00 +1000, you wrote:
Dear Fellow "Rebellers" ;

G'day from below !

My wife and I have been fortunate enough to be given a "lend" of a vacant
factory nearby in
which to assemble our Rebel so we can fit the struts (now done), connect
the flaperon controls
(which is where we are up to), make the wing root and strut fairings.

Our problem is :....we cannot find what angles to set the various stages of
flap notches at.
I have asked a Rebel builder here (in Australia), but he says that he
doesn't know what the
angles are supposed to be either.

Can anyone out there please advise what angle / degree of flap is
recommended for :
1) The "Reflexed" position ( I get about 6 degrees with the setup I have now).
2) First stage of flap
3) Second stage of flap
4) Third stage of flap
I might add here that I seem to get about 6 degrees of UP (with no aileron
input)...and
26 degrees of down ( with no aileron input )

With the flaperons in the 26 degree down position , and the aileron input
at FULL , the lower
side gets to the "required" 40 degree angle of droop.... but it LOOKS like
W...A....Y too
much deflection down to me... I'm thinking how much drag it must create !!!
(or am I just being to conservative here ?!?).

Any advice will be gratefully received !

Thanks

Rick & Wendy Harper
16 Tor rd, Dee Why,
N.S.W. 2099
Australia
rjwh@ozemail.com.au
rjwh56@hotmail.com
Ph : 02 9971 7889
Mbl : 0416 041 007
Fax : 02 9938 1480
O'seas Ph : 612 9971 7889
O'seas Fax : 612 9938 1480
<!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">
<HTML>
<HEAD>

<META content=text/html;charset=iso-8859-1 http-equiv=Content-Type>
<META content='"MSHTML 4.72.3612.1706"' name=GENERATOR>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><EM><FONT color=#000000 size=2>Dear Fellow&nbsp; "Rebellers"
;</FONT></EM></DIV>
<DIV><EM><FONT color=#000000 size=2></FONT></EM>&nbsp;</DIV>
<DIV><EM><FONT color=#000000
size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
G'day from below !</FONT></EM></DIV>
<DIV><EM><FONT color=#000000 size=2></FONT></EM>&nbsp;</DIV>
<DIV><EM><FONT color=#000000 size=2>My wife and I&nbsp; have been fortunate
enough to be given a "lend" of a vacant factory nearby in
</FONT></EM></DIV>
<DIV><EM><FONT color=#000000 size=2>which </FONT></EM><EM><FONT color=#000000
size=2>to assemble our Rebel so we can fit the struts (now done), connect the
flaperon controls </FONT></EM></DIV>
<DIV><EM><FONT color=#000000 size=2>(which is where we are up to), make the
wing
root and strut fairings.</FONT></EM></DIV>
<DIV><EM><FONT color=#000000 size=2></FONT></EM>&nbsp;</DIV>
<DIV><EM><FONT size=2>Our problem is :....we cannot find what angles to set
the
various stages of flap notches at.</FONT></EM></DIV>
<DIV><EM><FONT size=2>I have asked a Rebel builder here (in Australia), but he
says that he doesn't know what the </FONT></EM></DIV>
<DIV><EM><FONT size=2>angles are supposed to be either.</FONT></EM></DIV>
<DIV><EM><FONT size=2></FONT></EM>&nbsp;</DIV>
<DIV><EM><FONT size=2>Can anyone out there please advise what angle /
degree of
flap is recommended for :</FONT></EM></DIV>
<DIV><EM><FONT size=2></FONT></EM>&nbsp;</DIV>
<DIV><EM><FONT size=2>1) The "Reflexed" position&nbsp; ( I get
about 6
degrees with the setup I have now).</FONT></EM></DIV>
<DIV><EM><FONT size=2>2) First stage of flap</FONT></EM></DIV>
<DIV><EM><FONT size=2>3) Second stage of flap</FONT></EM></DIV>
<DIV><EM><FONT size=2>4) Third stage of flap</FONT></EM></DIV>
<DIV><EM><FONT size=2>I might add here that I seem to get about 6 degrees
of UP
(with no aileron input)...and&nbsp; </FONT></EM></DIV>
<DIV><EM><FONT size=2>26 degrees of down ( with no aileron input
)</FONT></EM></DIV>
<DIV><EM><FONT size=2></FONT></EM>&nbsp;</DIV>
<DIV><EM><FONT size=2>With the flaperons in the 26 degree down position , and
the aileron input at FULL , the lower</FONT></EM></DIV>
<DIV><EM><FONT size=2>side gets to the "required" 40 degree angle of
droop.... but it LOOKS like&nbsp;&nbsp; W...A....Y&nbsp;&nbsp; too
</FONT></EM></DIV>
<DIV><EM><FONT size=2>much deflection down to me... I'm thinking how much drag
it must create&nbsp; !!!</FONT></EM></DIV>
<DIV><EM><FONT size=2>(or am I just being to conservative here
?!?).</FONT></EM></DIV>
<DIV><EM><FONT size=2></FONT></EM>&nbsp;</DIV>
<DIV><EM><FONT size=2>Any advice will be gratefully received
!</FONT></EM></DIV>
<DIV><EM><FONT size=2></FONT></EM>&nbsp;</DIV>
<DIV><EM><FONT size=2>Thanks</FONT></EM></DIV>
<DIV><EM><FONT size=2></FONT></EM>&nbsp;</DIV>
<DIV><EM><FONT size=2>Rick & Wendy Harper<BR>16 Tor rd, Dee Why,
<BR>N.S.W.
2099<BR>Australia<BR><A
href="mailto:rjwh@ozemail.com.au">rjwh@ozemail.com.au</A><BR><A
href="mailto:rjwh56@hotmail.com">rjwh56@hotmail.com</A><BR>Ph : 02 9971 7889
<BR>Mbl : 0416 041 007<BR>Fax : 02 9938 1480<BR>O'seas Ph : 612 9971
7889<BR>O'seas Fax : 612 9938 1480</FONT></EM></DIV></BODY></HTML>



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