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sledge flight problems?? help

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Old 04-17-2003 | 12:50 PM
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Default sledge flight problems?? help

First i must say that i am all new to profiles and 3D type flying,, i was a pattern ( and still am) pilot.
My sledge i built is a blast!! this thing is awsome,, most fun i ever had,, and i dont even know how to fly it yet!! but when i do a hard pull up it starts to pull up then hesitates and drops the left wing. even in a tight loop it tries to drop a left wing,, but will not if you do a less hard pull up or looser loop,, can i correct this?? how?? maybe jeff w will see this,, im sure he can help.
Old 04-17-2003 | 03:42 PM
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Default sledge flight problems?? help

With the amount of control throws on these planes, it's easy to cause it to snap out of tight loops. If you don't already use them, set it up with elevator-flap mixing. This will help a lot. On my OMP edge, I can loop basically within the length of the plane, over and over.
Old 04-17-2003 | 04:20 PM
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Default sledge flight problems?? help

ryansdad40, you may refer to your instruction manual in the setup section near the back. Follow those suggested throws on the flaperons, that really helps that problem and tightens the loops. Keep this in mind, I designed this plane so that it will duplicate larger planes in its characteristics. Larger aerobats will do this wing drop also and bite you. The sledge has a slimmer wing and no dihedral to replicate larger plane characteristics such that guys can practice on a cheap profile instead of an expensive IMAC plane. Now, you can get what I think you're looking for out of the sledge with flaperons. The other things to check are proper thrust angle and lateral balance. Any questions please feel free to email me at [email protected] thanks, Jeff Williams
Old 04-17-2003 | 04:23 PM
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Default sledge flight problems?? help

Your just pulling to hard with too much speed and getting a snap. Learning to fly a FF is a bit different, FF's arent built for speed. reduce throttle, slow to a crawl and pull hard elevator and blast the throttle and it will waterfall flip within itself. Just remember to fly on the thrust and not on the wing so much. Thats were fun fly's really get fun
Old 04-17-2003 | 08:02 PM
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Default sledge flight problems?? help

Two small things you might check.
1. Check for any wing twist.
2. Try to balance the airplane wingtip to wingtip.

Other than that follow the previous sugestions.
Old 04-19-2003 | 07:00 PM
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Default sledge

Thanks i appreciate the advise,, i was not using any mixing at all,, se im computer stupid,, i have a futaba 9 c and have no idea how to program it,, it all looks like a forign language to me,, i will try to find someone to help me. also i dont have gap seals,, can they actually make a diff?? and why??? i just dont see a benifit when all controls are barn doors already!! jeff
Old 04-19-2003 | 07:10 PM
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Default sledge flight problems?? help

Ryansdad40, you need gap seals. Even though you may have a tight hinge line, it still leaks air. A gap seal helps keep the air on the side of the control surface in the direction it is deflected. This may be difficult to understand but you can email me and I will give you a more detailed explanation, if needed. Also, the flaperons help because they increase wing camber which provides more lift. Therefore in tight maneuvers the wing can absorb more loading before it stalls. Clear as mud yet? Hope not. Jeff W.
Old 04-19-2003 | 07:23 PM
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From: Tyler, TX
Default sledge flight problems?? help

Seal the hinge gaps.

Learn to use the radio. I don't own a 9C, but somebody can give you specific instructions.

In general:
- activate the flaperons (you will need to run the ailerons on channels one and six on a Futaba system)

- set the flap function to zero percent. If this is done, then none of the knobs or switches will move the ailerons in the same direction.

- turn on the elevator to flap coupling. Adjust so that when the elevator goes UP, both ailerons go DOWN. Start at about 50% mix. I generally also set it so that when the elevator goes DOWN, the ailerons go UP. On Futaba the default switch for this is the airbrake switch (3 position switch on the transmitter face just to the right of center) in the full up position.

- It is also helpful to set up the reverse mixing (using programable mixers) on a different switch, so that down elevator yields down ailerons and up yields up. This is said to be helpful with harriers and elevators although it hasn't helped me much.


Elevator to flap mixing IS very helpful for tight loops and waterfalls.


Leonard

PS remember that free advice is worth what you pay for it.

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