Official Freewing 90mm F-4 Phantom II Thread

[Elbee]

f4u ausie , I hear you, Brother.

Until I bought my first Freewing EDF, I had never read, heard, or seen a servo described only by its' weight.

It does keep things simple but it does little else.

So, I go to my favorite hobby shop and ask the owner, "May have a half a pound of your finest 17 gram servos, please?"

I don't understand that criteria unless you are only buying your servos by the pound, kilo, ton or whatever.

If there is a more logical explanation, someone please enlighten me as I am truly ignorant.

We always differentiated the servos by physical size (Micro, Mini, Standard, etc), inch-ounces of torque, degrees of rotation, and gear materials.

Later by type of motor, coreless for example, and now digital or analog, programmable or not.

The servo weight does little to describe the performance, which is really all I care about.

I just finished pulling out a twitchy 17 gram right aileron servo of the Corsair and replaced it with a 23 gram servo.

What does that tell anyone except I need to add 6 grams of weight to the left wing.

Frankly, I just don't get it.

Best, LB

[f4u ausie]

Hey guys hope yas all well... got my hi teck servo in,, wow. My first foray into quality (non generic) servos,,, makes an awsome nice electronic, electric sound, the stock servos just do not,,...... so itchin for sunday morn.. and that first long 435 volt flight,, hrb s holding up well time alone will tell..

[f4u ausie]

Thanx to all 4 help👍👍

[rlcamden]

Replacing the standard elev servo with a hitech hs 5245 mg .... was using super glue to close the gap (hole) in the servo arm..... saw that on rc informer.... to take out some of the slack,, well it worked well,, but dumb?. Ass me inadvertantly glued the servo shut.. around the edge.. between servo and arm... mmm was to b first 435 per cell 8 s flight.. on sunday... so put in batts preflight. ( no elavator) oh well... question have u guys made a little box or simply glued new servo into foam, as factory, just thinkin bout future replacement

I used 3DHolger's support (Reinforcement elevator servo of the 1:11 Freewing F-4 Phantom by 3DHolger - Thingiverse) for mine. Printed it in ASA and glued it with FoamTac after replacing the stock servo with a hitech and upgraded to a 4-40 pushrod and aluminum control horn on the servo. No issues and have over 100 flights in it.

[Elbee]

f4u ausie, I'd sleep better with a box or a plate as reinforcement depending on the integrity of the foam after pulling out a servo again. Make sense? Best, LB

[f4u ausie]

Replacing the standard elev servo with a hitech hs 5245 mg .... was using super glue to close the gap (hole) in the servo arm..... saw that on rc informer.... to take out some of the slack,, well it worked well,, but dumb?. Ass me inadvertantly glued the servo shut.. around the edge.. between servo and arm... mmm was to b first 435 per cell 8 s flight.. on sunday... so put in batts preflight. ( no elavator) oh well... question have u guys made a little box or simply glued new servo into foam, as factory, just thinkin bout future replacement

[f4u ausie]

Dont worry i had a kangaroo steak ready,,,:see_no_evil: 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! :exploding_head: (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! :fire:

[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