Kevin
I agree with Mike. Left Flap down would give right bank, all other
things being equal.
Looks like a complete rigging check. Sorry to slow down your testing.
Regards
Lance Sandford in OZ
>
> Kevin,
>
>
>
> Your symptoms seem to contradict your analysis, or maybe I am
> completely out to lunch. If the left flap were lower, then the left
> wing would produce more lift - manifesting itself in a right turn.
> On my monowheel, there is a slight tendency to roll left when flown
> solo. With 2 up, the roll disappears. You need to check the flap
> position using the profile jig that was originally used to set the
> flap position. Is the wash out correct on both ailerons and flaps.
> Does the aircraft drop a left wing at the stall?
>
> G-JULZ had a nasty wing drop at the stall which was cured by a slight
> adjustment of the ailerons. The ailerons on my classic wings have a
> very slight difference in neutral between sat on the ground and loaded
> in flight. Also, I guess you are using the slip ball to trim out in
> flight, is the slip ball horizontal set correctly, I fitted a small
> trim tab to the rudder to make the aircraft straighten up and fly
> right as the song goes. Could it be a rudder trim problem?
>
>
>
> Regards,
>
>
>
> Mike
>
>
>
> *From:* owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] *On Behalf Of *craig
> bastin
> *Sent:* 06 March 2009 03:41
> *To:* europa-list@matronics.com
> *Subject:* RE: Europa-List: Flap position, Flight testing
>
>
>
> I think you might run into assymetry issues between the tube and the
> pins with one hinge arm longer
>
> than the other. If you did the alignment of the plates and the
> two root end flap hinges and all was good
>
> you may have the pin in the flap out of position. if thats the case,
> you could get a machine shop to make a
>
> new pin that is eccentric, rather then the longer process of cutting
> the flap to bits to move the pin a few mm.
>
> The other thing is if you correct the cruise issue, what will happen
> at full flap, will it have a nasty habbit of pulling to the right, or
> rolling left because of the extra lift on the right wing???? Just a
> thought.
>
>
>
> The other thing is maybe... you should look at both flaps, and the
> clearances, perchance the left flap
>
> is hitting inside the wing, thus holding it a few mm down compared to
> the right wing. I had an issue
>
> with that, i ended up removing about 20mm from the from of one flap
> and reglassing it to get it to fully retract.
>
>
>
> craig
>
> -----Original Message-----
> *From:* owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com]*On Behalf Of
> *Kevin Klinefelter
> *Sent:* Friday, 6 March 2009 9:39 AM
> *To:* europa-list@matronics.com
> *Subject:* Europa-List: Flap position, Flight testing
>
> Hi All,
>
>
>
> Flight testing of 914 powered monowheel N211KA is going well (29
> hours).I have a flap position question for those who have been there.
>
> The aircraft has an irritating left turn in it when flown solo and
> slight left turn with two up. When trimmed out cruising straight
> and level the ailerons are close to even with the wing tips and
> the left flap is noticeably lower relative to it's aileron than
> the right side, which is almost even with the aileron. I think if
> I can rig the left flap up even with the aileron it will help cure
> the left turning problem and be less drag.
>
>
>
> I thought I might get a new flap hinge arm (FL16) on the left and
> with the aircraft supported and flaps up in the desired position I
> could drill new holes thru the lugs on the tourqe tube so the
> left flap retacted position matches the right.
>
>
>
> Will this work or is there a better way?
>
>
>
> Thanks, Kevin... flying and grinning...
>
>
>
|