I have noticed, that on Odysseys, that the flaps come down around 35 degrees
( never measured it) on the ground, but while in the air, the air forces,
make them become something like 25 degrees
The drag is not that great at 20 to 30 degrees, and it becomes much more
difficult to land shortly after any obstacle or a fence.
Any comments ?
Flaps
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earthstaraircraft
Re: Flaps
Hi Jaime
Your Odyssey's are not set up properly. the flaps come down to 48 degrees
with out the air load and 40 with the air load. i measured it. it will come
down steep with full flaps steeper than any plane i have ever flown, i have
flown a lot of planes and the Odyssey will come down really steep when you
actually get full flaps. may times builders do not realize that the flaps
are mente to go all the way off the end of the notch plate and so they
loose the last flap notch.
Check yours out. The bolts that hold the center support may also be loose
causing flex in the system and loosing some travel under load. You can test
the flaps on the ground by going to the back of the wing and lofting up on
both flaps with about 10 LB of pressure on the rib. the air load is a lot
more than that but it is even and your fingers put a point load on the
trailing edge witch could damage it so i only use 10 LB and it takes out most of
the slack to see what it is really doing in flight. Also at every annual
inspection, check the tension of the elevator cable and rudder. you can
check it by having some one pull the control stick all the way back and holding
it hard against the stop. than while the tension is being held, you could
tie the stick tightly, push down on the trailing edge of the horizontal
stabilizer with 5 LB of pressure and the trailing edge should not move any
more than 1/2 in. if it does it is to loose. if there is to much friction
after tightening the cables than the cables are crossed or dragging over
something in the tail boom. Correct that and re tighten the cables. Often this
makes the plane fly like it was designed to do and makes rotation problems
mostly go away.
Happy Flying
Mark
Your Odyssey's are not set up properly. the flaps come down to 48 degrees
with out the air load and 40 with the air load. i measured it. it will come
down steep with full flaps steeper than any plane i have ever flown, i have
flown a lot of planes and the Odyssey will come down really steep when you
actually get full flaps. may times builders do not realize that the flaps
are mente to go all the way off the end of the notch plate and so they
loose the last flap notch.
Check yours out. The bolts that hold the center support may also be loose
causing flex in the system and loosing some travel under load. You can test
the flaps on the ground by going to the back of the wing and lofting up on
both flaps with about 10 LB of pressure on the rib. the air load is a lot
more than that but it is even and your fingers put a point load on the
trailing edge witch could damage it so i only use 10 LB and it takes out most of
the slack to see what it is really doing in flight. Also at every annual
inspection, check the tension of the elevator cable and rudder. you can
check it by having some one pull the control stick all the way back and holding
it hard against the stop. than while the tension is being held, you could
tie the stick tightly, push down on the trailing edge of the horizontal
stabilizer with 5 LB of pressure and the trailing edge should not move any
more than 1/2 in. if it does it is to loose. if there is to much friction
after tightening the cables than the cables are crossed or dragging over
something in the tail boom. Correct that and re tighten the cables. Often this
makes the plane fly like it was designed to do and makes rotation problems
mostly go away.
Happy Flying
Mark
-
fgayford
Re: Flaps
I am going to check my JT2 next time I am out at the field. I need 65 mph to rotate. Mark says that slow rotation is all most always slack in the cables. I am going to be a happy camper! If this winter ever gats out of my way. Heh Alan could we see some pictures of your JT2?
We are a somewhat of a rare breed in that there are not that many JT2's out there.
Thanks
We are a somewhat of a rare breed in that there are not that many JT2's out there.
Thanks
-
cossitt.alan
Re: Flaps
Another way is to pull full flaps and simultaneously rotate. My takeoff is so fast when I'm doing this that it is hard to time so I just put full flaps in at the start of the takeoff run unless I'm been practicing.
I've got a 85 hp engine which helps.
-Alan Cossitt
>From my iPhone. Please excuse typos and terseness.
I've got a 85 hp engine which helps.
-Alan Cossitt
>From my iPhone. Please excuse typos and terseness.
-
blaswichk
Re: Flaps
Fred,
When I bought my Gull 2000 in February of 2009, I was amazed at the speed required for take-off compared to Kolbs and Phantoms. I saw Mark that summer, here at the Arlington Fly-In, and had him check my plane, and sure enough the cables were sloppy loose. Now they sound like a low bass string in sound when you pluck them, and the difference was amazing. It was hard to get the nose up in landing before, also resulting in high-speed landings.
My .02
kb
When I bought my Gull 2000 in February of 2009, I was amazed at the speed required for take-off compared to Kolbs and Phantoms. I saw Mark that summer, here at the Arlington Fly-In, and had him check my plane, and sure enough the cables were sloppy loose. Now they sound like a low bass string in sound when you pluck them, and the difference was amazing. It was hard to get the nose up in landing before, also resulting in high-speed landings.
My .02
kb