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IMAC Extreme Flight 78" Extra

Discussion in 'Giant / Scale Scratch and Kit Build Threads' started by hbollier, Mar 26, 2015.

  1. OK, this is an oldie but goodie, and it is only an ARF, so this should be an assembly thread. I have procrastinated over this plane for going on two years now but today it is out for delivery. I have most of what I need to get it together on 12S. the only part missing are the stands offs that are coming from Craig's Custom and a Castle Creations BEC Pro that I cannot seem to put my hands on.

    I plan to try my hand at the Basic IMAC sequences with this plane so the setup will lean towards precision. It may, however see double duty, so stay tuned.

    Air Frame: Extreme Flight 78" Extra
    Motor: Motrolfly DM 4330-206
    ESC: Castle Creations HV80
    BEC: CC BEC Pro
    Servos: Savox 1270TG
    Batteries: Glacier 6S 3700 mah in series for 12S (Revo 435 Blend 4600 mah in transit)

    Attached Files:

  2. OK, so I had the plane shipped to a commercial address to save on shipping so I had to pick it up (see photo). I got it home and opened the box, all I can say is WOW. This is my third Extreme Flight plane but again WOW! The following items are already cut out for you: Servo mounts, air exit, control horn holes, exit holes for the pull pull cables. The air exit even has an air dam to force air out the hole. There is a tube to contain the servo extensions from the tail. Not a wrinkle in the covering. Now it is time for step zero, hit every accessible joint with CA and go over the entire plane with a covering iron just to be sure. Again, WOW! I almost forgot to mention, all the hardware bags are labeled! This is going to be a great assembly!

    Attached Files:

  3. Keep us updated, curious as to how it does on the electric setup never flown 1 on electric.
  4. Nice!! EF does a great job with their packaging.

    Should not be any problems with the MF4330 and 12S. If you want to get a good feel for how your power system may work there is a great thread on RCG.............."Power Systems for Extreme Flight Fanatics." Tons of info on about every electric setup (and some gas) worth flying.

  5. Thanks Capt. Roll, I converse with Aeroplayin fairly regular about the 4330. I owe him some data on the 4330-206.

  6. Hit all the seams with a covering iron. Drilled holes for all the servo mounting screws, installed and removed screws. I used thin CA and hit every wood joint that I could reach starting at the motor box and moving back. Hit the wings, servo mounts, screw holes and the canopy. When I was done with the thin, I went back with medium and hit any joints that had gaps, carbon fiber stringers, and the anti rotation pins in the wings.

    Tonight after dinner I plan put in hinges with 30 min epoxy. Fun times.
  7. Alky6

    Alky6 150cc

    Nice! I am using this one for IMAC practice and will use it for my first IMAC contest coming up soon. Mine is powered with a VVRC 40cc twin. It is a great airframe! Will follow your progress!
  8. Hinged the elevators and installed the control horns. While waiting for glue to dry I installed elevator and rudder servos. I make my own servo extensions, so I made up the female to the servo, installed a keeper, and left a little extra so I can get the length just right. I also learned that it is harder to run the wires through the tube one at a time. [​IMG][​IMG][​IMG]

    LHS was out of 1.5" servo arms so I am waiting on those and standoffs. I never found my BEC Pro, but picked up the last one while I was there. I also found out while I was there that Vess props can no longer be bought through horizon dealers, and horizon doesn't carry XOAR PJN 21X8. Picked up a 20X10 and searching for the 21X8.
    Last edited: Mar 27, 2015
    Capt.Roll likes this.
  9. This is the first time I have worked with hinge points. I watched the assembly videos on the Extreme Flight website and learned a lot from Chris Jewitt. Like using a reamer to open the first part of the hinge pocket. To oil the hinges, I used an applicator for lubricating fishing reels. Very handy. All the hinges and control horns were sanded to make sure the glue gets a good bite.

    Attached Files:

  10. Alky6

    Alky6 150cc

    I believe Valley View RC has the 21x8 xoar. I don't recall if they are beech or laminated. You may have to call and ask for it, as the last time I spoke with Tim he said he had a bunch ordered in but they were not on the web site.

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