FW F86

[weedsnager]

Carbon fiber rods and foam tac or epoxy

[F106DeltaDart]

First off, congratulations on a successful maiden! Welcome to the Sabre club, it's a sweet machine. I'm sure you'll have it fixed up in no time, I had the same thing happen on my 3rd flight. After some epoxy, it's still going strong over 100 flights later. One thing with landing this plane is it will bounce if landed fast. Let the speed bleed off in ground effect, and let it settle in naturally. Your landings will be greasy-smooth in no time. Again, congrats man!

[AkumaZeto]

Ideas on how to fix? The little support post in the duct moved too.

[AkumaZeto]

Ok so the maiden was 98% SUCCESS HURRRAY! Plane took off and flew AMAZING. No trim needed WHAT A BIRD SWOOOOOOOOSH! I made a few practices patterns for landing and it was coming in hot. Finally my 30 second timer went off and I was forced to make a go of it. I came in pretty hot an dI was nervous and shaking like crazy. She bounced and one of the mains popped out of the pocket. It then settled and went in on the nose :( It cracked the foam in the thin area and I am hoping I can fix it. But had the main not popped out it would have settled on all 3. MAN WHAT A RUSH! It is actually or feels slower than my Zero for sure.

[AkumaZeto]

SHAKING SO BAD!

[F106DeltaDart]

I would recommend more expo for elevator to start out.

Personally, more expo dulled out too much for me, especially on low rates, but it's all personal preference. I don't think I would do any higher than 30% though.

[weedsnager]

Good call. I am all set. I am guessing I should not fly this from the street but rather a field so I have no idea how long it will take to nail down a giant empty parking lot or something. Given that everyone says it takes a good bit of runway to get off.

Don't sweat taking off with this bird, it has no bad habits while taking off

[Lon]

I have 20mm for up travel on the elevator and 15mm for down travel. Will this be enough. It seems to be in spec for low rates but high rates seems crazy for elevator. I set 20% expo on elevator.

I would recommend more expo for elevator to start out.

[AkumaZeto]

Good call. I am all set. I am guessing I should not fly this from the street but rather a field so I have no idea how long it will take to nail down a giant empty parking lot or something. Given that everyone says it takes a good bit of runway to get off.

[F106DeltaDart]

As long as it is a barely noticeable delay you will be fine. You're not really going to get any noticeable rolling moment generated from the tail. But, if it is a significant difference in servo speed, you might consider replacing the servo. The last thing you want is a servo on your elevator locking up or dying mid-flight.

[AkumaZeto]

yeah I think its a delay response with the servos them selves. They are set on the sample spline same thread for ball nut. But one is visibly slower or delayed.

[F106DeltaDart]

Here is my elevator trim. Your throw seems about right, but I would try to adjust the travel and make it symmetrical if possible.

[AkumaZeto]

I have 20mm for up travel on the elevator and 15mm for down travel. Will this be enough. It seems to be in spec for low rates but high rates seems crazy for elevator. I set 20% expo on elevator.

[AkumaZeto]

Here is where mine is

[AkumaZeto]

Finalizing all my surfaces for a maiden soon. I noticed my left elevator stab does not move linear with my right. It is fine with sudden movements but a slow roll on the up or down stroke causes the left to move .5 ahead of the right. Is this going to matter causing a roll on the tail? I also noticed the ball links are very fragile and dont appear to allow the rod to pass through the link. So I had to set subtrims on my taranis to offset the neutral location setup from the factory. I just want to make sure I get everything right.

Also where is everyone setting their elevators at? In between there is a small rectangle piece of foam. Are you lining them up to the top lip middle of bottom of this centering piece.

[Lon]

If you are asking if it tries to leap off the ground, it does not. It smoothly rotates and lifts off. If you are asking about a pitch tendency with increasing throttle, it doesn't have that either, one of the nice advantages of having the thrust line through the center of the aircraft.

Well put F106Delta!!

[dkalwishky]

Again to confirm it does not try to go straight up?

Mine never has, she's well behaved.

[F106DeltaDart]

If you are asking if it tries to leap off the ground, it does not. It smoothly rotates and lifts off. If you are asking about a pitch tendency with increasing throttle, it doesn't have that either, one of the nice advantages of having the thrust line through the center of the aircraft.

[AkumaZeto]

Again to confirm it does not try to go straight up?

[F106DeltaDart]

What throttle managment are you using for take off? 1/4 to 1/2 then to full once rolling?

I just advance the throttle uniformly and go to full once rolling.