Official Freewing 80mm Avanti S Sport Jet Thread

[Hugh Wiedman]

We have 6 Avantis at our field. Last weekend: https://www.youtube.com/watch?v=Z0EK...ature=youtu.be

Wow Jeff, your club has a nice collection of planes/jets and really enjoyed watching the video. Saw some great flying and mostly real nice landings. Loved the Avanti knife Edge above the runway.

The only difference between you and me is that I would have posted the video and said "look at all my planes that I got to fly today, the only flight not mine was the bounced landing of the F-4 that I let my wife try"! :lying_face:

[AceMigKiller]

Wouldn't be worth the effort in my opinion.
These things fly *faaaantastic* on the 80mm setup and you don't have to support it with the big pack required for a 90mm fan.
Best "bang for the buck" is the 9-blade Inrunner setup (from the T-33), but the stock 12-blade Hi Performance is no slouch either.
I'd recommend flying it stock first before hogging it out for the 90mm.

[Bgelok]

Just ordered the High Perf Yellow Avanti, but am wondering if anyone has stuffed the 90mm 9B fan and motor in one of these yet. Have fan and esc from a crashed F4 that i would like to find a home for.

[Robbie9859901]

We have 6 Avantis at our field. Last weekend: https://www.youtube.com/watch?v=Z0EK...ature=youtu.be

[kilolima31]

Hi all,
apologies if this has been asked already; newbie and can't find an answer on searching.
I have a new Avanti S (purchased a few months ago but did't get to it because of lockdown etc). The problem is that the flaps are unbalanced. It's not a case of adjusting the push bars; I can see the servos horns are at different angles. So if you set the flaps to match at the 'flaps up' position, they are very much different at full (landing) flap position. I've managed to open a servo horn screw but moving one notch on the horn is too crude an adjustment. Anyone experienced this and/or have any suggestions ? I could split the flap servos at the PCB and use separate rx channels, but this is messy.

Thanks,
Kim.

For the record (in case this helps someone), I fixed this by bringing in the push rod to the next hole in on one servo only and re-adjusted the push rod length. Not very scientific, but this brought the flaps closely matched in the take-off and landing positions. There was still a few mm in the difference at the control surface but flew the Avanti today and tested the flaps (at a safe height) and found no roll effect, so used flaps for take-off and landing.

[mirion]

Nice job, my maiden flight could have been better. Any flight tips before I crash. How bout some low rates pointers,

I am by no means an expert, the Avanti being my first EDF but here are my throws at 3 different rates. I use low rates for takeoff and landing...….
Low Medium High
Ailerons: 3/8" 5/8" 7/8"
Elevators: 5/8" 3/4" 7/8"
Rudder: 3/4" 1" 1-1/8"
Flaps: 5/8" (takeoff) 1-1/4" (landing)

and here are the Freewing suggested throws which I started with but it was certainly a handful on the maiden due to excessive aileron throw...….



This is a video of some pretty nice "Maiden" takeoffs and landings...

https://www.youtube.com/watch?v=YNfL0c0nmTw&feature=emb_logo

[kilolima31]

Here is a trick that has helped me before - linear travel as a function of angle is like an "S" curve. When one servo arm is offset from the other, they match up at two points, not just one point. So one thing you can do is adjust your connection points so that they match at 100% flap and 0% flap, and nowhere else. For example, if zero degrees is the arm sticking straight out of the wing, then flaps up might be one servo at 30deg and the other at 40deg - let's call that 30/40. But then you can make "flaps down" the opposite, like "-40/-30". Each servo has transitioned 70deg, and the total linear travel is the same on each. They just don't match anywhere in between. I don't normally use a half flap position, so this works fine for me.

PS: by the way, from 40/30 to -30/-40 is not always matching deflection, because the other side is rotating as well (the control surface). But this is just a simplified example to illustrate the general point that there can be two matching points, and you can exploit that.

Excellent idea, Gringotuerto; at least I could have landing flaps. Thanks for that.

[Rudy’s pilot]

Nice job, my maiden flight could have been better. Any flight tips before I crash. How bout some low rates pointers,

[Gringotuerto]

Hi all,
apologies if this has been asked already; newbie and can't find an answer on searching.
I have a new Avanti S (purchased a few months ago but did't get to it because of lockdown etc). The problem is that the flaps are unbalanced. It's not a case of adjusting the push bars; I can see the servos horns are at different angles. So if you set the flaps to match at the 'flaps up' position, they are very much different at full (landing) flap position. I've managed to open a servo horn screw but moving one notch on the horn is too crude an adjustment. Anyone experienced this and/or have any suggestions ? I could split the flap servos at the PCB and use separate rx channels, but this is messy.

Thanks,
Kim.

Here is a trick that has helped me before - linear travel as a function of angle is like an "S" curve. When one servo arm is offset from the other, they match up at two points, not just one point. So one thing you can do is adjust your connection points so that they match at 100% flap and 0% flap, and nowhere else. For example, if zero degrees is the arm sticking straight out of the wing, then flaps up might be one servo at 30deg and the other at 40deg - let's call that 30/40. But then you can make "flaps down" the opposite, like "-40/-30". Each servo has transitioned 70deg, and the total linear travel is the same on each. They just don't match anywhere in between. I don't normally use a half flap position, so this works fine for me.

PS: by the way, from 40/30 to -30/-40 is not always matching deflection, because the other side is rotating as well (the control surface). But this is just a simplified example to illustrate the general point that there can be two matching points, and you can exploit that.

[Mach9]

Hi all,
apologies if this has been asked already; newbie and can't find an answer on searching.
I have a new Avanti S (purchased a few months ago but did't get to it because of lockdown etc). The problem is that the flaps are unbalanced. It's not a case of adjusting the push bars; I can see the servos horns are at different angles. So if you set the flaps to match at the 'flaps up' position, they are very much different at full (landing) flap position. I've managed to open a servo horn screw but moving one notch on the horn is too crude an adjustment. Anyone experienced this and/or have any suggestions ? I could split the flap servos at the PCB and use separate rx channels, but this is messy.

Thanks,
Kim.

That is a big pain. If you have another horn with multiple points, you could try walking it around the shaft to see if you find a position that matches the other servo and then cut off all the other points.

[AceMigKiller]

Here's the link to the video of a Practice Run for the Colorado EDF Pattern Challenge.

https://youtu.be/VnVWlrShB7E

[kilolima31]

Hi all,
apologies if this has been asked already; newbie and can't find an answer on searching.
I have a new Avanti S (purchased a few months ago but did't get to it because of lockdown etc). The problem is that the flaps are unbalanced. It's not a case of adjusting the push bars; I can see the servos horns are at different angles. So if you set the flaps to match at the 'flaps up' position, they are very much different at full (landing) flap position. I've managed to open a servo horn screw but moving one notch on the horn is too crude an adjustment. Anyone experienced this and/or have any suggestions ? I could split the flap servos at the PCB and use separate rx channels, but this is messy.

Thanks,
Kim.

[AceMigKiller]

Had a great time competing this weekend at the Colorado Pattern Challenge. Juuust couldn't squeak out 1st place (by 11 points), but awesome to fly alongside some fantastic talent.

Weapon of choice for everyone flying in the Advanced Class was the Freewing Avanti 80S. 😎

Check out that first round score!!!

[Rudy’s pilot]

Hey Dudes,
Can you guys share some good rates for the Avanti. I have the Elite F-16 Falcon and I'm looking for a better EDF Jet and I think the Avanti is my choice. I just looking for a few low rates and some good pointers, I have the 4000/5000mah batteries. My first maiden it flew like a buttered corkscrew, I checked my throws and all good. Maybe my COG is off but that's at 110-115. Trying to dial in....thanks

[t01ga]

That is an awesome makeover, you did an outstanding job.

Thank buddy!

[Mach9]

Well, yesterday was the day to maiden my Avanti-S 80mm and it was not as good as I hoped. (I didn't crash at least) I had my rates on low D/R & Expo all 70% and Expo 35%, kinda had a hard time with it wanted to roll, (constant stick movement) couldn't even trim it, my COG was @ 110 mm, (5000mah lipo) wind was at 12 mph. Not sure what the problem is, any good info? Thanks guys

Might check post 2806. I think he gave the ailerons a touch of reflex. I had to do that to a little Viper. Be sure your elevators are equal.

[Gringotuerto]

Following the make-over; still awesome. I forgot how great it sounds!

That is an awesome makeover, you did an outstanding job.

[Gringotuerto]

Well, yesterday was the day to maiden my Avanti-S 80mm and it was not as good as I hoped. (I didn't crash at least) I had my rates on low D/R & Expo all 70% and Expo 35%, kinda had a hard time with it wanted to roll, (constant stick movement) couldn't even trim it, my COG was @ 110 mm, (5000mah lipo) wind was at 12 mph. Not sure what the problem is, any good info? Thanks guys

I found the rates in the manual to be ridiculously high, especially aileron. It flies like a buttered corkscrew with those throws. It is very stable once you get it tuned up, so I would suggest that you look at your throws and maybe reduce further.

[Rudy’s pilot]

Well, yesterday was the day to maiden my Avanti-S 80mm and it was not as good as I hoped. (I didn't crash at least) I had my rates on low D/R & Expo all 70% and Expo 35%, kinda had a hard time with it wanted to roll, (constant stick movement) couldn't even trim it, my COG was @ 110 mm, (5000mah lipo) wind was at 12 mph. Not sure what the problem is, any good info? Thanks guys

[t01ga]

Following the make-over; still awesome. I forgot how great it sounds!