Official Freewing 80mm Avanti S Sport Jet Thread

[AFTERBURNER]

So I have flown my AvantiS for 4 seasons and love this plane. I have cranked the stock motor up to about 128mph, but I want to go FASTER! I have been reading about the FMS 80MM V2 12 BLADE PRO 3280 2100KV EDF FOR 6S and I am wondering do I need another ESC for this setup or is the stock one doable?

I am flying my Avanti with the FMS 2100KV fan and a 100A ESC. It works great.

[salali]

I'm considering purchasing the Avanti ARF Plus and installing a 80mm w/ a 3270-2000Kv motor from an E-Flight F-18 model. My question is how similar is the Avanti compared to the Freewing BAE Hawk 70mm HP? The obvious difference is w/ the fan and motor but are the flight characteristic similar?

Apologizes if this was previously discussed but there are a lot of pages.

[paulrkytek]

Just did the maiden with my new Avanti. Tricked it out to the max....

FrSky Archer SR10 Pro
GPS
RPM/Temperature
G63 Brakes/Steering Gyro
JP Electric Brakes

Best flying EDF I ever owned!!! Excellent job Freewing except for 1 thing!!! Now some tough love... Many of the sticker graphics are coming off the airplane. The "AvantiS" on the right side is half gone. Some checkerboard gone. What the heck? Brand new airplane peeling apart before I got it airborne.

Does anyone know if MRC will replace the graphics???

You are not the first with this issue. Set your covering film iron on low and the temperature will melt the glue enough to re stick them. Warning !!!!,too high temperature will bubble the foam so start low. I have a Hobbyking iron set to a fraction under a quarter of the dial good luck

[Biff767]

Just did the maiden with my new Avanti. Tricked it out to the max....

FrSky Archer SR10 Pro
GPS
RPM/Temperature
G63 Brakes/Steering Gyro
JP Electric Brakes

Best flying EDF I ever owned!!! Excellent job Freewing except for 1 thing!!! Now some tough love... Many of the sticker graphics are coming off the airplane. The "AvantiS" on the right side is half gone. Some checkerboard gone. What the heck? Brand new airplane peeling apart before I got it airborne.

Does anyone know if MRC will replace the graphics???

[mshagg]

Love those clear canopies guys, amazing how much it changes the look of this plane

[Hugh Wiedman]

Hey all, just wanted to share a couple pics of my Avanti S from this past weekend ... installed a clear canopy, pilot and blacked out the cockpit insert. I have 25 flights on this jet, the last 3 were on grass for the first time and despite sensitive steering issues, it took off and landed with ease! Absolutely in Love with this model and I have nothing but good things to say about it's appearance and flight characteristics ...

I also changed my shaded canopy for the clear one after I did a little cockpit work. Just sanded and coated the foam with epoxy, then repainted it and added the pilots and some instruments from IflyTally. It's pretty basic, but better than the way it comes. It was tough to see inside with the shaded canopy, so swapped out to the clear one. It's been out in the Florida sun for some 200 flights and the smooth epoxy surface has endured, although I do not leave it sitting out in the hot sun when not flying, as I do with all my foam aircraft.

[VerticalAddiction]

Probably shouldn't black out the cockpit insert. I can see the gatoring from here!

Yes, I could have spent more time prepping and it is far from perfect - but the tinted canopy hides the imperfections, the clear one is being used for the on-board camera use ... I checked out some of your many posts, I can see why this detail on my Avanti would be annoying to see ... knowing you are an advanced builder takes the sting out of that comment, Ha ha!

[bandetx]

Probably shouldn't black out the cockpit insert. I can see the gatoring from here!

[VerticalAddiction]

Hey all, just wanted to share a couple pics of my Avanti S from this past weekend ... installed a clear canopy, pilot and blacked out the cockpit insert. I have 25 flights on this jet, the last 3 were on grass for the first time and despite sensitive steering issues, it took off and landed with ease! Absolutely in Love with this model and I have nothing but good things to say about it's appearance and flight characteristics ...

[bandetx]

I made vortex generators for it.

[Mach9]

Info that may be useful. Forgive me if this is redundant or out of place. Correct and/or add whatever you think is needed. Hope this helps.

Batteries & Power
All sellers lie, it is only a question of how bad.
If you assume 50% of the rated C, you should be good.
Higher V - higher price, more weight, cells & power.
Higher A - higher price, more weight & run time.
Higher C - higher price, more weight & power.
Lithium Polymer (There are many types of Lithium.)
Voltage Max 4.20, Dead 3.27, Safe Min 3.71, 3.75 better, Store 3.84
Temp Max 140F, Min 32F, Ideal 110F
Max current available AxC. Max power in Watts VxA
Lo A pack needs higher C to equal same power as hi A pack.
2.5A x 40C = 100A 5A x 20C = 100A
Hi V with Lo A gives same power as Lo V Hi A.
4V x 5A = 20W 8V x 2.5A = 20W
Hi V uses smaller, lighter, less expensive wire and connections.
Hi V uses more expensive ESC. Danger of shock past 50V and will arch.

Run Time
Assuming the pack capacity is accurate, which it is probably low.
Measure the Amp draw at various throttle positions.
Use the ESC rating as the max.
100A ESC / 5A pack = 20 (You need 20C so use a 40C pack.)
60 Min / 20 = 3 Min until DEAD pack (BAD!)
3 Min x .8 = 2.4 Min (2 Min 24 Sec) runtime with 20% reserve.
100A ESC / 3.3A pack = 30.3 (You need 30C so use a 60C pack.)
60 Min / 30.3 = 1.98 Min (1 Min 58.8 Sec) runtime with 20% reserve.
At an average 50A draw, the runtime will be twice.
Roughly 5 Min with a 5A pack and 4 Min with a 3.3A pack.

Brushless Motors
Without brushes there are no wear, bounce, arch and speed/balance problems.
Descent motor bearings can run faster than any fan can withstand.
Silicone insulation 600V-1000V and 482F (302-572F). PVC 221F, Teflon 842F.
Magnet wire insulation 600V-thousands and 221F-428F to as high as 1000F.
Metal melt points: Copper 1984F, Silver 1761F, Aluminum 1220F, Lead 621F, Tin 449F.
Copper wires can be bare, tinned with solder or silver clad.
Solder (If used, usually crimps or welds internally) melt points:
63/37 361F, 60/40 361F-374F, 95/5 450F-464F
Neodymium Iron Boron magnet grade max temp:
N 176F, NM 212F, NH 248F, NSH 302F, NUH 356F, NEH 392F, NAH 428F
Magnet glue max temp:
I don't know about the factory glues.
J-B Weld epoxy 500F
Some people use Loctite 480 (A type of CA/super glue) which is only 180F.
Bearing lube max temp:
160F-180F
Some electric motor grease can go to 500F, but I don't know of any for RC use.

If the heat is kept below 140F, you can safely run any motor VERY hard at higher voltage.
Most will run over 200F at a reduced lifespan. Wattage creates the heat.
The fan shroud needs to be metal to draw heat and not distort. The RPM of the fan
must not be exceeded and of course proper balance is always needed.
Increase fan diameter for more thrust/punch/torque and increase pitch for speed.

[Hemidoo]

What has been people’s experience trying this on 3300s or 4000s? I had in other forums that as long as they where not looking for speed the light wing loading by allowed for decent flight times at 40%-50% throttle.

A local guy is possibly looking to trade his Avanti S for one of my planes my only hold up is not wanting to get 6s 5000

I fly mine on 3300's , 4000's , and 5000's ... I like the 4000's the best

[Guy Ricken]

Hi Everyone,

Finally got some nice flights with my Avanti S. Love the freakin thing. It flies so smoothhhhhhhhh
Recently added the 3d printed nozzle which in my opinion completes this epic model.
Attached some photo's.

[StratoJoe]

I guess from a different perspective when the Change Sun 10 Blade 70mm EDF came out people found that instead of pulling 90 amps from a 4s 3300Kv setup they could pull only 70 amps from a 6s 2100Kv setup. I remember seeing a thread about it but never tried it.

[StratoJoe]

I think if I where to use a motor for a 90mm fan such as 4075-1390kV and run it with an 80mm fan I think a castle HV120 (Which I have on hand) should be all that's needed to run it. In this case its just an example. It would take a lot more research.

I know EDFs are a little different then messing around with prop planes. In a past experiment I had a friend that really liked to play around with power systems and he had found a 12s setup in some 3D planes allowed to get the power on the prop we wanted and allow us to use our 6s 3300 in series vs some really large 6s and 8s setups. The idea in that case was due to have a lot of 6s 3300s since it was what the 60" 3DHS/Extreme Flight planes used. Sadly he's not in the hobby anymore or he would likely try something out like that again for the Avanti.

[Hugh Wiedman]

A different idea I just had was build an 8s version by lashing up a pair of 4s batteries. Of course I would have to figure out which motor to use. My idea would be to have to keep the overall wattage and thrust about the same as 6s but allow it to run at a lower amp rating with the higher voltage.

That would be an awesome setup on 8S. Not sure what fan is available, I don't think Freewing and FMS make an 80mm 8S EDF. There is the Jet Fan V3 80 mm for 8S, but not sure where you can get it, except maybe Australia. You'd also need the inlet adaptor to fit into the Avanti. Cost would be somewhere between $130-$190 if you can find it, then you'd also have to upgrade the ESC. All said and done, you might end up with close to $300 in it. Too rich for my blood, especially since the 6S version sort of gives me everything I would want to ask for, but that's just me.

[StratoJoe]

A different idea I just had was build an 8s version by lashing up a pair of 4s batteries. Of course I would have to figure out which motor to use. My idea would be to have to keep the overall wattage and thrust about the same as 6s but allow it to run at a lower amp rating with the higher voltage.

[Hugh Wiedman]

What has been people’s experience trying this on 3300s or 4000s? I had in other forums that as long as they where not looking for speed the light wing loading by allowed for decent flight times at 40%-50% throttle.

A local guy is possibly looking to trade his Avanti S for one of my planes my only hold up is not wanting to get 6s 5000

If you're going to use a 3300 or 4000, then I doubt you'll get much over 3:30 (unless you fly like my grandma used to drive). I'm using a RT6250, weighing 795 gr and get 5 minutes of aggressive flying, including knife edge at near full throttle. It does cruise very well at 50% throttle or less, even with the extra weight compared to a 3300 mah battery. There's nothing this air frame can't do with a heavier battery (unlimited vertical, take-off, knife edge, etc.) and the extended flight time just adds to the fun. IMO, you'd be better off getting some 5-6000's and use those because at some point, you'll need them in other aircraft (like 90 mm F-4s, F-16, F-18, Corsair, Spitfire, etc. etc. etc.). Don't limit the enjoyment of this aircraft by cutting the flight time short!

Regardless of the battery you use, the Avanti S 80 mm is one of, if not, the best sport foam EDF's. Flies and lands like a trainer, yet blows the pants of the Habo and Havok (which was invented and licensed by a good flying buddy of mine-and I always rib him about the Avanti being better than his Havok when I fly it-of course his true version is a huge turbine which ain't too shabby-his company is AeroSports and he is the best turbine jet pilot/designer/builder south of the north pole).

[StratoJoe]

What has been people’s experience trying this on 3300s or 4000s? I had in other forums that as long as they where not looking for speed the light wing loading by allowed for decent flight times at 40%-50% throttle.

A local guy is possibly looking to trade his Avanti S for one of my planes my only hold up is not wanting to get 6s 5000

[Daryl]

Thanks for your reply :)