FPVLAB

+ Reply to Thread
Page 1 of 4 1 2 3 ... LastLast
Results 1 to 10 of 35

Thread: Multiplex Easy Star II

  1. #1
    Navigator
    Join Date
    May 2011
    Posts
    128

    Multiplex Easy Star II

    Announced for some time "refreshed" version of well known Multiplex model finally became available in Poland and since I like my Mk.I very much and my brother made me choose my Christmas gift so Easy Star Mk.II will be successor to my worn out "Izzi".

    According to info provided by producer main improvements over earlier version are:

    -ailerons
    -motor mount for brushless setup plus folding prop
    -removable horizontal stabilizer

    Only those? Let's see what's in the box:



    At first glance the box is almost identical with Mk.I one. Inside (KIT version) we find fuselage, wings, horizontal stab and all necessary small parts packed in plastic bags plus set of decals. All ELAPOR parts are protected by bubble foil .



    As usual Multiplex vacuum cast ELAPOR parts are top quality and fit each other perfectly.

    Fuselage - here can be found much more improvements than "official" ones. Cylindrical, flimsy piece of foam that served as motor mount in Mk.I was replaced by large socket for plastic pod-like motor housing.



    Tail part was redesigned to accommodate horizontal stabilizer locking mechanism.



    Unfortunately Multiplex engineers didn't think this through too well. First - to insert stab one must pull bottom part of the fuselage. After several repetitions of install/remove procedure bottom part might become loose creating necessity to add some modifications. Second - Mpx provided only barrel like push-rod connectors which require proper setting of elevator position each time stabilizer is installed. If only they got some snap like connectors...

    Internal fuselage space was enlarged up to motor mount.



    Other innovations include grooves inside fuselage bottom forming channel for aerial of 35MHz systems (instead of usual slits on the edges of fuselage halves) and similar grooves in nose part of fuse for some reinforcing rods.
    Tail section of the fuse has noticeably more foam comparing to Mk.I version.



    Elevator and rudder servos are mounted deeper inside hull and are covered by special foam parts which improve model's aerodynamics. Some plastic frames for servo mounting are also provided.





    Accessories include special holders for servo extension leads or Y-cable to make aileron servo connecting a little bit easier.



    Vertical stabilizer and rudder are noticeably larger than in earlier version.



    Whole fuselage is longer.



    Canopy and cargo space opening are longer but internal fuse dimension is slightly reduced.





    Horizontal stabilizer is almost unchanged except central section which was redesigned for locking mechanism.



    Motor tower - Mpx finally stopped making user to stitch ESC deep inside plane's hull and provided spacious motor mount with removable lid which allow easy access to drive components.



    Foldable prop is a very nice addition to whole setup.



    Wings profile remain almost unchanged. Only exception is servo hole and aileron.





    Also wing joining was changed a bit and reinforcing tube bottom cover has different shape. Reinforcing tube is the same as in Mk.I so I'm going to replace it with longer carbon tube I was using in my old EZ.



    As you can see Mk.II has many changes. Whether they are real improvements or not - remains to be seen.

    Build log will follow as soon as I got some free time....

  2. #2
    Navigator
    Join Date
    Dec 2011
    Location
    Austria, Gloggnitz
    Posts
    75
    Hi Verid,
    I got a RR version of the ES2 so I'm a step ahead (but couldn't place all components nice before glueing the fuse together.
    But anyways, I'm not a builder but a flyer :-)
    The ES2 looks great, sofar I had no FPV flight, only 2 tests with the FPV equipment on. Looks great, and with 2650mah 3cell I'll fly forever :-) (14min throttle, 30mins+ flighttime estimated).
    I like the detachable horiz stab, it's great to pack the whole bird in the orig case!
    I'll post a video soon - check it out on my blog rcschim.blogspot.com


    greetings,
    RCSchim

  3. #3
    Navigator
    Join Date
    May 2011
    Posts
    128
    So clean......

    Just a word of advice - put some reinforced tape on the fuselage bottom and wings' leading edge. It helps - a lot.

    BTW - what RC system do you use? I don't recognize the antennas...

  4. #4
    Navigator
    Join Date
    Dec 2011
    Location
    Austria, Gloggnitz
    Posts
    75
    Thanks for the Tipp - I already have clear tape on the fuse but not yet on the wingtips.
    BTW: here is the maidenvideo I just uploaded:

    View this video on YouTube
    Last edited by rcschim; 7th January 2012 at 04:10 AM. Reason: video

  5. #5
    Stockholm, Swe arch001's Avatar
    Join Date
    Mar 2011
    Posts
    190
    Hey guys, thanks for the info. Mine is coming in a couple of days and I'm considering whether to to reinforce the tail section or not. Any thoughts on that?

  6. #6
    Navigator
    Join Date
    May 2011
    Posts
    128
    Quote Originally Posted by arch001 View Post
    Hey guys, thanks for the info. Mine is coming in a couple of days and I'm considering whether to to reinforce the tail section or not. Any thoughts on that?
    Wooden spar in mine. Will post photos soon... In EZ* Mk.I I had carbon rod.

  7. #7
    Crashing Vitamin J's Avatar
    Join Date
    Mar 2011
    Location
    Denver, CO
    Posts
    3,124
    The new version looks a lot sleaker, like the fuse is narrower. I like it a lot, I wish they did a trade-in program!

    Here's how I stiffened up the tail on mine. I also have a fiberglass spar inside the boom. This is the best way IMO, makes it super rigid.

    Click image for larger version

Name:	P1010111.jpg
Views:	321
Size:	93.1 KB
ID:	5906

    e: the vertical spar in the rudder is not needed with the diagonal spars, that was my first try but the diagonals are much better.

  8. #8
    Navigator
    Join Date
    May 2011
    Posts
    128
    Vitamin J - nice one but it'll ruin whole "removable stab" idea....

  9. #9
    Stockholm, Swe arch001's Avatar
    Join Date
    Mar 2011
    Posts
    190
    Thanks guys! Sounds like I'll be reinforcing the tail then.

  10. #10
    Navigator
    Join Date
    May 2011
    Posts
    128
    As I promised - it's time to show how to make it fly.

    As expected from respectable company ES Mk.II described as beginner's plane has manual for beginners. Everything is clear and pictures leave no room for doubts.

    Closer inspection of parts revealed first problem. Fuselage halves aren't quite straight.



    It's not much of a problem but you must remember about it when installing reinforcements and lay fuselage halves flat to nullify this "curvature".
    All reinforcements are made from snake outer sleeves cut to pieces as shown in the manual.



    First glue horizontal stabilizer locking mechanism in place. Avoid glueing two plastic pieces together at all costs.





    Next reinforce fuselage with snake outer sleeves. Tail reinforcement serves also as 35MHz aerial protective channel and prevents stabilizer locking clip prom falling off. Remember to lay fuse half flat to straighten it.





    As you can see reinforcements straightened fuse half on the right.



    This ES is going to be used for some hardcore low flying so I put additional wooden spar in tail section.





    Latch catches....



    ....and Y-cable mount.



    Unfortunately theres another problem. Y-cable mounts are a little too tight.



    Some work with sand paper and everything fits perfectly.



    Servo holes in fuse (mounting frames) and wings are prepared for micro class servos such as Emax ES08A. Strengthened black TowerPro SG91R are tiny bit too large.





    For rudder and elevator I had only HS-81 so I had to enlarge servo holes and make mounts with some nylon screws and nuts.









    Now glue fuse halves together again laying it flat to make sure it'll glue straight.


+ Reply to Thread

Similar Threads

  1. Replies: 8
    Last Post: 7th February 2012, 07:27 PM
  2. First Flight with Easy Star my first FPV Equipment!
    By zozolione in forum PILOT'S LAB
    Replies: 10
    Last Post: 7th December 2011, 01:37 PM
  3. My trusty old Easy Star... ;)
    By Keith in forum FIXED WING
    Replies: 6
    Last Post: 29th August 2011, 09:26 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts