Official Freewing 90mm F-4 Phantom II Thread

[Ks.jetflyer]

I purchased mine when they first came out. I put in a different edf but kept everything else. Last year I tried using hv lipos, noticed no cell count but everything worked. About a minute into flight lost power, but managed to get partial power and safely landed. No more hv liops. Took it out last weekend, still no cell count. About 2min. into 3rd flight it started losing power. Turned a short final and landed. Checked batt, still had 3.78 per cell. I'm thinking my esc might be dying. Any thoughts or ideas would be appreciated. TIA

[Hugh Wiedman]

Hey Y'all,

Check out Hugh Wiedman's Navy VF-84 F4B Phantom EDF in the latest issue of the AMA magazine.

A beautiful repaint with all new 8S setups.

Congrats, Wildman!

She's a looker with a cooker.

Best, LB

Why thank you Steve, I haven't even seen the issue yet. 8S is certainly the sweet spot for these F4's, and I just upgraded the Spektrum Ar637t in both 8S F4's to plus. Although I felt it couldn't possibly fly any better, it somehow managed to do just that.

Definitely my favorite and easiest flying EDF.

[Elbee]

Hey Y'all,

Check out Hugh Wiedman's Navy VF-84 F4B Phantom EDF in the latest issue of the AMA magazine.

A beautiful repaint with all new 8S setups.

Congrats, Wildman!

She's a looker with a cooker.

Best, LB

[f4u ausie]

Is CG in manual supposed to be measured with gear up or gear down? I I maidened my 8s version on Sunday and had 2 smc 6300's as far forward as canopy would allow and still showed to be tail heavy with gear up. I put 2 flights on in this position and they were decent but I was having a yaw oscillation almost like a gyro was turned up too high, but there was no gyro. Any tips?

Hello farm flyer,,, hope u r well.. if u watch the original motion vids,, pilot ryan cut front of cockpit away,, (he likes nose heavy) i found the need to do same,, and i think the reason is, the original fans had plastic fan surround... my original 1835 kv 6s setup, and the new 1350 kv 8s,, have aluminum fan surround,, heavier than original... hence the need to move batteries forward 4 factory cg... which is awsome starting point im now at 175mm cg,,, bit nose heavy.. others hugh r at 200 i use hrb 4s 6000,, couple pics

[Evan D]

Book CG is at best a starting point and after flying move it to suite. That said when I set a point it’s always with the gear down so I can easily check it sitting on the bench.

[farmflyer01]

Is CG in manual supposed to be measured with gear up or gear down? I I maidened my 8s version on Sunday and had 2 smc 6300's as far forward as canopy would allow and still showed to be tail heavy with gear up. I put 2 flights on in this position and they were decent but I was having a yaw oscillation almost like a gyro was turned up too high, but there was no gyro. Any tips?

[f4u ausie]

I know i have a 90mm f22. so how does this phantom fly compares to the f22? Is it easy flyer, is it a heavy flyer, does it take off fast etc.

Sorry should have read the question better.. i think i am only an intermediate pilot,, and dont find it hard to fly..if i flew an f22 i may say its easy.. but the f4 is heavy, needs to b flown fast,,or under power, in the turns,, .. it will fly slow in the straights, with flaps,, but would not want to turn that slow,, im sure u would have a foam pile of rubble,, it flys tracks very straight.. and looks awsome in the air.... i fly fast untill on final,, then hit full flaps, off the gas, let it settle, and adjust speed as req,, it did take a while to get flap elev mix right, still tweaking it after around 20 flights.. started as 6s,, now 8s.. i luv it,,, if u get one ,, do check all elev servo linkages, appears to b its only weakness.. have fun b safe

[Reptielenfreak]

I dont own an f22 , but from what i understand its like a 90 mm trainer( so pretty easy)

I know i have a 90mm f22. so how does this phantom fly compares to the f22? Is it easy flyer, is it a heavy flyer, does it take off fast etc.

[f4u ausie]

How does this jet fly compared tot he f22 90mm?

I dont own an f22 , but from what i understand its like a 90 mm trainer( so pretty easy)

[Elbee]

f4u ausie, great debreif and happy you got through your check flight with no issues. Congrats, Mate. Best, LB

[Reptielenfreak]

How does this jet fly compared tot he f22 90mm?

[f4u ausie]

Hello team melbourne has had a winter dry spell( one week).. so desperate me... made that 4.3 volt per cell flight... awsome clear sky no wind.. around 60 degrees f 15 c ... flew for 4 minuts 30 seconds... on land at 4.8 per cell.. flewit hard.. its a faaasst thing if u want(it likes it).... but a bit pitch sensative ,, after changing the elev servo.. the elevator end is on the inner hole ,, will change to outer.. my mistake,, any way went well,,,,, gota get those batteries,,, one flight per day ,, not enuf to get used to any( man woman or Beast)

[Elbee]

Hugh Wiedman. Great insight and debrief. I thank you. I will put some thought on this. From upgrade to hyper-mode. I like it. Best, LB

[Hugh Wiedman]

Hugh Wiedman f4u ausie Gentlement, I have a question.

Did either/both of you upgrade your Phantoms to the newer 90mm 12-Blade EDF 6S Power System w/ 3668-1960Kv Inrunner and fly it on 6S before jumping into the "Big Boy" pond of 8S?

I ask as I am considering an upgrade to that power system for my F-4 before this Fall.

I don't mind the original stock setup (2018), but it is pretty soft in the corners for the way I like to fly.

Also, do y'all have other recomendations for 6S?

Best, LB

Steve,
I upgraded to 8S on my F4 from the 6S 12 blade 4068-1835 Kv inrunner, so not sure how the 3668-1960 compares. Had a Camo and Blue Angel F4 on the 1835 inrunner, which was a nice upgrade from the stock 1750 outrunners, but my Camo version had over 150 flights (and had taken a beating) and decided to replace it with the stock grey 8S to do the Jolly Rodgers. That's the 8S 4075-1350 Kv 12 blade with 8S 120 A reversing ESC (which I don't use on grass, only the occasional asphalt flight). If you believe RC Castle's thrust figures, the 2 6S 12 blades (1835 & 1960) are about the same at 4400 & 4200g static thrust respectively, so not sure the 1960 will do it for you. The 8S, on the other hand is around 5300g of static thrust.

After I flew the new 8S F4, I was so impressed that I bought the same fan/ESC for the F4 Blue Angel and my old F16 (which also had the 6S 1835Kv inrunner) and it was a drop in fit for both. On the F4, what a huge difference it made, now arguably one of my favorite EDF's. On 6S, the best balance point for me was around 192mm (close to manual) and it was soft in the corners and needed full throttle for loops. No longer! I found that the 8S flies better around 202mm and I'm rarely at full throttle, except getting off the grass, which now is almost immediate. The 8S fan has plenty of punch and is much more responsive around mid throttle than the 6S. I rarely even go to full throttle doing Cuban 8's, loops or Spit S's. At that balance point, it also seems to land much easier and almost floats in, allowing me to get and keep the nose up about 10-15% on landing without worrying about stalling (which I occasionally did in the corners on landing approach). This F4, IMO is absolutely made for 8S. The battery bay is huge and using a 930gr SMC 8S HiV 5900 gives me at least 5 minutes while I still have about 1 1/2 inches that I could (but won't) move the battery back, with no lead added to the tail. The little extra weight in the fan and battery seems to make it fly even smoother.

I also got the same setup and upgraded my FW F16 and that was a very nice upgrade. Almost as nice as the F4, but not quite. This is the same fan that's in my 8S Eurofighter as well, but the F4 actually flies better IMO. Was thinking of upgrading my F18's, but they seem to fly very well on the 6S 1835Kv fan and I suspect any extra weight in that airframe would not be advisable. Heard someone put that fan in their F18 but haven't heard any update.

So I highly recommend you upgrade your F4 to the 8S instead of trying the 6S 1960Kv fan. You will not regret it. If you do, I'll always take it off your hands for a small fee!

[Elbee]

f4u ausie, Hey Craig,

Thanks for the information.

An upgraded EDF is what I'm shooting for here.

Possibly, the ESC, but not really needed though 'thrust reverse' seems to be 'the thing' and a nice option.

We'll see.

As for our move, some things have changed, so for the time being, we are staying put.

I am less bothered by that fact than 'she whose authority exceeds my rank', but I must tread lightly.

They say, "All things come to he who waits" or in this case 'she'.

I was taught and believe that patience is a virtue, so I'll sit back and observe, as always.

Best, Steve

[f4u ausie]

Steve the fan flight is u tube 5 months ago an f4 red drone cant miss it(shame shooting em down ) maybof int

[f4u ausie]

Hugh Wiedman f4u ausie Gentlement, I have a question.

Did either/both of you upgrade your Phantoms to the newer 90mm 12-Blade EDF 6S Power System w/ 3668-1960Kv Inrunner and fly it on 6S before jumping into the "Big Boy" pond of 8S?

I ask as I am considering an upgrade to that power system for my F-4 before this Fall.

I don't mind the original stock setup (2018), but it is pretty soft in the corners for the way I like to fly.

Also, do y'all have other recomendations for 6S?

Best, LB

Hello steve, hope you and tam r both well. I bought mine as an 8 s setup(only one i could get here at the time) unless i got it direct from upnorth.. which i have done b4... anyways i had no 8 s batts,, so i fitted my 1835 hp innrunner, that was in my mig 17... for first flights,, then changed to 8 S only have 1 set, another on order,, hrb 4s 6000..s as u ve previously seen, its like going from a smallbloch 350 to a bblock 454... awsme ,, the half to three qaurter speed (efficantcy,, ) wrong spelling daa,, is way better, i fly it solid in the turns,, dont want a stall.. but still get 4 min at the full charge of 4.2 down to 3.75 or about.. so pretty happy,, another few weeks will be dry enough for that 4.35 flight.. keep a keen eye on the skys over ozz.. motion did a fan flght wes and a friend,, with the1960 kv .. hewas also impressed..(i still prefer the bblock). No substitute for cubes.. i really am sure for the couple hundred more $$ 8s is the go... and it feels more stable,, about 250 grams extra.. b safe hav fun,,, let us no how ya go,, hows the movin goin??

[Elbee]

Hugh Wiedman f4u ausie Gentlement, I have a question.

Did either/both of you upgrade your Phantoms to the newer 90mm 12-Blade EDF 6S Power System w/ 3668-1960Kv Inrunner and fly it on 6S before jumping into the "Big Boy" pond of 8S?

I ask as I am considering an upgrade to that power system for my F-4 before this Fall.

I don't mind the original stock setup (2018), but it is pretty soft in the corners for the way I like to fly.

Also, do y'all have other recomendations for 6S?

Best, LB

[f4u ausie]

Great to hav ya back lock... 8s u will not regret it .. have not flown mine for around 6 weeks,,,, i hate winter... least i dont get the icey cold like lb etc althoght we had minus 1 last week.. long time since thats happened.. global warming,, who nos.. hav fun b safe

[Elbee]

locharrow. Welcome Back, Sir. Glad to read you are the mend. Best, LB