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Official Freewing 90mm F-4 Phantom II Thread

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  • They changed it after my complaint then…which is what they said they’d do.

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    • Delete wrong thread.

      Gravy​

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      • Spoiler and full span flaps? When are you using the spoilers with the F4?

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        • Hello

          Greetings from Germany.
          Does anyone have experience with the FMS 90mm 12 Blade Pro Ducted Fan / Impeller incl. Brushless Motor 4068 KV185 as a drive? I'll get my 6s version of my Phantom tomorrow, but I'm not sure if it has enough power for the grass runway. According to the description, the FMS drive would bring 4.2kg of thrust. I don't want to go on 8s because of the weight.

          I've also read that many replace the elevator servo - is the original really that bad, I mean should I replace it immediately?

          Thanks

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          • I fly off pavement. Mine has a Jetfan/ HET 8S system. I still have the stock servo but changed the linkage. To be honest FW may be sending this out with improvements, mine was one of the very first ones.

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            • I fly off a grass field. 6S with a 4068-1835Kv Inrunner Motor. Plenty of power to get off the grass. Try and get the CG as neutral as you can with gear down, and you will be fine. Changed the elevator servo and linkage as a little added insurance.

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              • This was my post when I first fitted the FMS fan, it has been in long grass,.in bushes, up a tree and generally abused but it still runs great!

                #5134
                Nov 3, 2021, 10:12 AM
                "Maiden " today with the FMS 1850 ....to be honest, compared to the Freewing 1835 ........nothing in it. The grass is longer now than the last outing with the latter which might make a difference but in the air a difference was not apparent. HRB 6000 cells all above 3.8 so no change there either. So there we have it . What it does have going for it is a very nice sound.........Time wise I just stuck to my normal 3 1/2 min. from wheels up to wheels down.

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                • With any single-servo critical control…it is good insurance to go with higher quality servos. And yes…upgrade to heavy duty hardware for the linkages and pushrod on the elevator.

                  1) I crashed an F-4 due to stock servo failure after a VERY large number of flights. Actually repaired this one.
                  2) I crashed again due to the ball connection failing.
                  3) I crashed an F-4 due to RF noise. Strongly advise you install RF chokes near the ESC.

                  With heavy duty linkages and push rod, higher quality servo and RF chokes, she is now my “old reliable” F-4 number 3. The other two are in a pile for spare parts.

                  -GG

                  PS Search on RF choke or choke in this forum to learn all about these marvelous add-ons.

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                  • Nearly had a pile of spares meeeself last week GG.....thought I would take it way out and up and come in fast for a really low fast roll. Usually practice after a normal passing roll I pull straight up and half loop and roll level. Well, came in like a rocket, very fast roll and pulled up a wee bit too late hard banking left! The plane disappeared behind trees, totally out of sight for what felt like ten seconds but probably only a couple. It appeared again fortunately going vertical and I sorted it from there. Apart from a change of underwear it all ended OK. Click image for larger version

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                    • Originally posted by locharrow View Post
                      Nearly had a pile of spares meeeself last week GG.....thought I would take it way out and up and come in fast for a really low fast roll. Usually practice after a normal passing roll I pull straight up and half loop and roll level. Well, came in like a rocket, very fast roll and pulled up a wee bit too late hard banking left! The plane disappeared behind trees, totally out of sight for what felt like ten seconds but probably only a couple. It appeared again fortunately going vertical and I sorted it from there. Apart from a change of underwear it all ended OK. Click image for larger version

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                      Wooohoo you saved it...

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                      • Saw this on Face Book, looks mean...... Click image for larger version  Name:	f411.jpg Views:	0 Size:	81.4 KB ID:	385505

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                        • Is there a disease called Phantomitis? Woke up this morning and found I pulled the trigger on the grey version yesterday....I already have a pair of camos so wtf was I thinking about? Wife says I asked her it it was OK and she said yes......what's going on........... ps...great day today, lovely pale sky, warm breeze, park empty .... had a couple of relaxed flights and best of all good touch downs. Missus was with me and I actually got a compliment !! ......

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                          • locharrow, there is no known cure, it is rarely fatal, and its' effects last a lifetime. Best, LB

                            I solemnly swear to "over-celebrate" the smallest of victories.
                            ~Lucky B*st*rd~

                            You'll never be good at something unless you're willing to suck at it first.
                            ~Anonymous~

                            AMA#116446

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                            • Originally posted by locharrow View Post
                              Is there a disease called Phantomitis? Woke up this morning and found I pulled the trigger on the grey version yesterday....I already have a pair of camos so wtf was I thinking about? Wife says I asked her it it was OK and she said yes......what's going on........... ps...great day today, lovely pale sky, warm breeze, park empty .... had a couple of relaxed flights and best of all good touch downs. Missus was with me and I actually got a compliment !! ......
                              No cure what so ever....
                              Kind of like me and F-16's, love them things for some reason, I've only had about 9 so far.....................

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                              • I had the Cermark F16 a few years back. Stuffed an OS 91 two stroke in it, Flew great but the engine would falter about five minutes into the flight and force a landing. Checked it on the bench...no problems but every time I put it back in the same thing happened. Peed off I hung it up, got something else then sold it on. Sort of regret that because it looked so good when it was flying. I have 70mm F16 that I've never flown because the u/c looks so delicate, waiting till I find a good runway. Anyway, it is re-assuring to know that there is no cure...just have to suffer!

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                                • Looking at trying the 12 blade 3668-1960Kv in this airframe. Currently flying the 4068-1835Kv. I fly off a grass field and looking for something other than an 8S setup to get a little extra umph to get it off the ground.

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                                  • Phantomitis: A rare phorm of phlu-like phever associated with phlight phungus and a particularly phamiliar aircrapht. Pholks complain of phrequent and phervent phorebodings of a phast, phormidibal phighter jet capable of Mach 2+. Their pheelings become so phixated, they place these phacinations phirst and phoremost, above all others. The phever can become so phorceful that the inphlicted will phorgo all necessities in liphe to phurther their phixation. Without restraint, phanatics can easily become phinancially unstable. Phighting the Phantom is phutile, and sometimes phatal. Please be phorewarned!
                                    Fly low, fly fast, turn left

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                                    • Nuts.......phalcohol should in there somewhere.....

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                                      • Loch, I agree totally! Unfortunately, "alcohol" has no "f" in it. ... On second thought, I guess I could have included "Phennellys" somewhere! Now, you my friend have obviously had enough! ...and I need more!
                                        Fly low, fly fast, turn left

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                                        • Nuts....Strange, my wife says lives with an f in alcoholic so is should be in it!

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