Official Freewing 90mm F-4 Phantom II Thread

[f4u ausie]

Dont worry i had a kangaroo steak ready,,, only time wil. Tell,, absolutely no heat charging to to 435,, hrb 6000 50 c 6s and then 2 4s6000 50c... danny told me he was testing cells currently,, only way to get hv packs here, was direct from hong kong.... makes sence,, mayb a lipo cell is a lipo cell,, needless to say, all my lipos live in a ammo box,, inside a bigger ammo box,,, always have..... i too hugh have seen the nasty lipo,, i dropped it fully charged,, on garage concret floor,, within a nanosecond , i could not see the walls of my 20 foot garage,, kicked it outside ,onto the grass,, and watched the fun... least i didnt poke the bear like ya good self hugh ,, any way will update if needed we roll on them hugh i will trust ya spelling, never mine

[Coconut]

Same thing I said, Hugh. It's like when you're trying to light a match. And it won't light every time you strike it. Until that one time. Then, BOOM!. You would hear f4u aussie telling his wife, "Honey, I finally got it to light!!!".

[Hugh Wiedman]

Hi team again more learning to b had,,,, i felt the need to try. And charge my ,, standard commond hrb packs to 435 volts per cell ,, nihv on your charger.... was nervous,, fires bla bla... last night a 6000 6s no prob to 435 per cell... tested at around 4 minuts al37..... instead of 3........ so tnite after work,, 2 4 s 6000 hrb 8s volts per cell as u c 435 per cell.. pics for proof.. goina bench test for time let yas no

WOW, you got some major cajones! (Don't feel bad if you have to look up the translation of that common Spanish slang) Keep a fire hose handy and give us updates on any potential bon fires, I'll bring the marshmallows. I'll probably just have to look West one night and the skies over Australia will be ablaze and most likely be visible from Florida!

[f4u ausie]

5 and a half minuts 375 per cell

[f4u ausie]

Hi team again more learning to b had,,,, i felt the need to try. And charge my ,, standard commond hrb packs to 435 volts per cell ,, nihv on your charger.... was nervous,, fires bla bla... last night a 6000 6s no prob to 435 per cell... tested at around 4 minuts al37..... instead of 3........ so tnite after work,, 2 4 s 6000 hrb 8s volts per cell as u c 435 per cell.. pics for proof.. goina bench test for time let yas no

[Elbee]

f4u ausie, I'd say you're doin' just fine; Bravo Zulu, Mate. Best, LB

[f4u ausie]

More learning to b had havin a go at detai cockpit. One small step,,, lotsa detail to do

[Hugh Wiedman]

8s done and dusted,,, wow like a new plane,, think the xtra 300 grams makes it more locked in.. take off speed reached way quicker,, flys well at 50 or 60 percent throttle,,, awsome value up grade,, i think its an 8s plane..... for sure. Flap mix is out now so cg must b a bit different,, 4.5 minuts mixed at 3.75 per cell did glue in little foam blocks to stop battery wobbly wobbly with 1 strap

Welcome to the 8S club!!!🤙 Told you you'd love it. I believe this model is made for 8S. Even more stable when it's a bit heavier, also found it flies/lands better balanced a bit further back at 200mm where I believe my 6S was better at 194mm. Couldn't believe how much better it is on 8S. Changed my FW 90mm F16 to 8S also, a sizable enhancement all around, but the F4 showed the biggest improvement.

[davegee]

8s done and dusted,,, wow like a new plane,, think the xtra 300 grams makes it more locked in.. take off speed reached way quicker,, flys well at 50 or 60 percent throttle,,, awsome value up grade,, i think its an 8s plane..... for sure. Flap mix is out now so cg must b a bit different,, 4.5 minuts mixed at 3.75 per cell did glue in little foam blocks to stop battery wobbly wobbly with 1 strap

Excellent News, f4u aussie!! Looks like you have a great combo there using 8S. I think if I buy another F4 someday, I'd start it out at 8S power. Mine does ok right now, got lots of flights on it with 6S, but I'm intrigued to see what it could do with 8S power, especially up here at 5000' MSL!

Good job!

Davegee

[f4u ausie]

8s done and dusted,,, wow like a new plane,, think the xtra 300 grams makes it more locked in.. take off speed reached way quicker,, flys well at 50 or 60 percent throttle,,, awsome value up grade,, i think its an 8s plane..... for sure. Flap mix is out now so cg must b a bit different,, 4.5 minuts mixed at 3.75 per cell did glue in little foam blocks to stop battery wobbly wobbly with 1 strap

[Elbee]

f4u ausie, This is why you're CO of the Southern Hemisphere Phantom Society. Best, LB

[f4u ausie]

15 flights now ,, awsome but the good news,, got 2(so far hrb 6000 4s ) 8s woohoo.. take out the 6s put in the 8.... just early backyard testing,, so far very surprised,, by calculation the 6 s 1835 kv spins faster than 1350 8s,, by 1000 odd rpm,,,, but the low torque. Like a big block chevy.. compared to small block... 4 and a half minuts and 378 per cell woohoo.. just gota work out cg and find that 8s battery strap.. im excited all over again

[flyboy56]

Got 3 flights today. F4 had been laid up all winter . Great to get her out again.

[f4u ausie]

2 more flights thismorn here,, easter monday... slowing it down just a little bit more(but not stall slow) getin better. So got 330 minuts at 375 per cell.. it mayb boring.,,, but just one mor time, looks absolutely awsome flying by... just luv the swoopy shape

[427jimmy]

Thanks Hugh . I'm ordering the F4 today. The SMC's sound like the winning combination.

[Hugh Wiedman]

I'm just about to pull the trigger on this one. I can only charge up to 6S with my setup so it looks like a pair of 4S for me. Can you guys recommend some 4S Lipo's for me
Brand, mah and C rating? I'm not looking for ultimate performance. Better handling and flight times are the biggest concerns.

Thanks much. Anything else you would like to add before hand, please feel free.

Jimmy, I suggest you try 2 SMC HiV 4S 60C 5900's. And forget the C rating other brands put on their packs, if it's 25% of what they state that's more like it, but not so with the Flight Packs of SMC. I'm using the SMC HiV 8S 5900 in my new 8S F4 Jolly Rodgers and converted 8S F4 Blue Angel (previously on 6S), as well as on my converted 8S F16, yielding flight times on the F4 of 5-6 minutes (not interested in speed, although it has it, but more on performance and flight time). The SMC 5900 series (8S/6S/4S) is an outstanding battery line with both high actual C and slightly lower weight. I'm using the HiV 5900 series in almost everything I fly now including the Mig, Corsair (10 minute flight time) and Spitfire (13 minute flight time). I've tried many different brands including HRB's, Admirals, Spektrum , Roaring Top, etc. and as far as I'm concerned, the SMC's (HiV & Regular) are now the "Gold Standard" for price/weight/actual C. You can check out the independent testing done by MCSGuy at RC Groups (to see the real C) or click on the connection from SMC's website (SMC Racing). The 5900 HiV 8S weighs 940 gr, or 2 4S weighs about 970 gr, cost about the same for 1 8S or 2 4S. Many chargers do not charge to the full 4.35 per cell (where I'm charging to), and instead if they charge HiV they may only go to 4.3 per cell, but that's still good. At 4.2 per cell the 5900 is a 5100 mah battery. Their cheaper and "regular" line are also unbeatable. I know I sound like a SMC Groupie, but after going through hundreds of different batteries (and money for batteries) I'm now completely taken in by SMC. And Danny has THE BEST customer service I've experienced. Had one pack with a single cell eventually after 7 months exhibit an IR of 7 -where most of his packs have IR's of cells in the <1 to 2 range, and I sent him a photo of the pack along with my Progressive chargers IR indications and he sent me a new one!!!

SMC also makes the 5300 and 6200 series which have an even higher actual C but weigh a bit more. For me, the 5900 series is the perfect marriage of weight/actual C/high capacity as my F4's now virtually jump off our grass runway with the 5900 (and my 2 6S F18's and 6S A-10 do as well). You definitely will not go back to any other pack once your aircrafts have dined on "The Breakfast of Champions". Cut my battery inventory down from 120 batteries of different brands and mah, down to 8 6S HiV 5900's, 8 6S HiV 4400's (3D planes), 4 8S HiV 5900's and 3 8S HiV 4400's (all for the 8S Eurofighter).

The other thing I noticed on the 8S F4 was that it flew and landed much better balanced at around 200mm back, where the manual states 190mm if I'm not mistaken. On 6S, I could only go back to maximum of 194mm, still somewhat nose heavy, to keep away from any stalls while turning (no cheater holes in the F4), but on landing and approach, it always had a tendency to nose down a bit at slow speed. At 200mm, it seems to be more neutrally balanced and landing is so much smoother, allowing to easily keep the nose up slightly at slower speeds when landing. That may just be me, but don't be afraid to balance the F4 slightly further back than you may think. And this is coming from someone who has ALL of my EDF's balanced at least 20-40mm further back than manual, with the only exception being the 6S F4 I had to keep around manual CG or pay the price.

[locharrow]

"I have only 6s hrb 6000 50c." That's what I use f4u....3min 30 sec roll out to touchdown with varied power. I stuck a big analogue servo in the rear and never had a problem....must get back out now the weather is improving.

[f4u ausie]

I have only 6s hrb 6000 50c.. value 4 me at this stage,, till i step up..3 minuts on the knocker at 3.8 per cell.. im sure there is better stuff where u r,, someone will chime in.. im still useing stock elev servo(for now hi teck coming) but the glue joint came loose after 2 flightsNow epoxy in place.. and strengthened pushrod.. post pics when u get it,, dont fget check all elev parts

[427jimmy]

I'm just about to pull the trigger on this one. I can only charge up to 6S with my setup so it looks like a pair of 4S for me. Can you guys recommend some 4S Lipo's for me
Brand, mah and C rating? I'm not looking for ultimate performance. Better handling and flight times are the biggest concerns.

Thanks much. Anything else you would like to add before hand, please feel free.

[f4u ausie]

Another couple flights thismorning.. public holiday here(yeea) got flap mix correct now (finally) no pitch change...... feeling very comfy with it now.. low fast flyby is reall cool.. lands slower with full flaps... luvin it