RE: Multiplex Magister RTF  
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    • All Forums >> Electric Aircraft Universe >> Electric Training >> RE: Multiplex Magister RTF
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    RE: Multiplex Magister RTF - 2/5/2006 4:19:20 PM   
    Hixx


     

    Posts: 57
    Joined: 1/17/2006
    From: Crewe, UNITED KINGDOM
    Status: offline     		Yes, my first plane. The wheels came in the post on Saturday, so I flew....and promptly crashed on Sunday. Man I'm annoyed!
    Bent the prop shaft and pulled out the balsa wing mount from inside the fus. Ah well, spare parts will be on order tomorrow.

    (in reply to javiergarzab)
           Post #: 151

    RE: Multiplex Magister RTF - 2/5/2006 4:42:21 PM   
    carlrich


     

    Posts: 170
    Joined: 1/24/2005
    From: cincinnati, OH, USA
    Status: offline     		Hixx, I broke the plastic wing retainer and the wing bolt and pulled the balsa out from the wing retainer nut also. I was able to super glue the nut back in place and then put new balsa wood over it and superglue it down also. This wasn't too tough and works great. I have not been able to find a new wing bolt or plastic retainer strap. Let me know if you find somewhere to buy these. I've been flying by having rigged up a crazy repair with the wing bolt and balsa ply for the wing strap.

    Don't know the reason for your crash but will offer that if you are flying with the RTF set up using a nicd or nimh battery pack, there it no warning that the motor is about to cut out and once it does there is no bringing it back as you typically can with smaller motors on other aircraft. Once you get used to the amount of time you have with a given pack you'll want to land before running out of juice as the plane comes down fairly quick and you'll be landing dead stick (one shot at landing). All that said, I enjoy flying mine and find that cold weather actually gives significantly more flying time with the Nicd pack.

    Carl

    (in reply to Hixx)
           Post #: 152

    RE: Multiplex Magister RTF - 2/5/2006 8:30:12 PM   
    Hixx


     

    Posts: 57
    Joined: 1/17/2006
    From: Crewe, UNITED KINGDOM
    Status: offline     		Thanks for the tips Carlrich, I was wondering how I was going to repair the wing retainer. My thought was to add a new piece of balsa to the underside of where the existing is fitted, kinda above the battery compartment and use a longer bolt, though I will probably do as you did as it works OK.
    I'm hoping to get the straps at my LHS tomorrow, if not from there from Multiplex directly. I will get more than I need and post you some out if your struggling to find them.

    I think the crash was mostly caused by me not securing the battery too well, as the plane handled like a shoe once airborne - really reluctant to turn and when it did wouldnt come out, so Im guessing the pack was moving around at the back where its not held down. Next time Im securing it with a foam bung.

    I will post here tomorrow if I find some straps, you can PM me your address if you like.

    (in reply to carlrich)
           Post #: 153

    RE: Multiplex Magister RTF - 2/5/2006 9:10:06 PM   
    carlrich


     

    Posts: 170
    Joined: 1/24/2005
    From: cincinnati, OH, USA
    Status: offline     		Hixx, definately let me know if you can get the plastic bolts and wing straps.

    The 8 cell nicd pack that came with my Magister has a one inch square piece of velcro on the fronf of it and the corresponding velcro piece was on the front of where the battery slides back into the fuselage. Maybe back just 1/2 " from the front. Has held the battery with no issues. I usually just push the battery in about flush with the opening. CG must be fine as if flies well. You may want to make sure your CG is good and that the ailerons are moving as far as they are supposed to. Just some ideas.
    Have you range checked your transmitter? I recently had some issues with a JR6102 and have switched to the Spektrum DX6.

    Carl

    (in reply to Hixx)
           Post #: 154

    RE: Multiplex Magister RTF - 2/7/2006 2:04:59 PM   
    Hixx


     

    Posts: 57
    Joined: 1/17/2006
    From: Crewe, UNITED KINGDOM
    Status: offline     		OK, there on order and should be with my LHS this week. Maybe I will have them for the end of this, or early next. I ordered 3 sets!! - just in case
    Have you tried to get some from Multiplex USA?

    (in reply to carlrich)
           Post #: 155

    RE: Multiplex Magister RTF - 2/8/2006 3:47:32 PM   
    carlrich


     

    Posts: 170
    Joined: 1/24/2005
    From: cincinnati, OH, USA
    Status: offline     		Hixx, I hadn't tried multiplex other than to find out who there distributors were. I checked with the distributors and they had no part number for the product. Were you able to get a part number for wing hold down and plastic bolt?

    Carl

    (in reply to Hixx)
           Post #: 156

    RE: Multiplex Magister RTF - 2/9/2006 9:28:12 PM   
    Hixx


     

    Posts: 57
    Joined: 1/17/2006
    From: Crewe, UNITED KINGDOM
    Status: offline     		My bits arrive at the shop next Monday and will be forwarded on to me. As soon as they come I will post the PN.
    The crash repairs went OK, I think the front mount is now stronger than the back one! I went with your method..THX!

    (in reply to carlrich)
           Post #: 157

    RE: Multiplex Magister RTF - 2/9/2006 11:50:41 PM   
    javiergarzab


     

    Posts: 42
    Joined: 3/31/2005
    From: CuernavacaMorelos, MEXICO
    Status: offline     		I was checking everything yesterday so that I can fly this weekend, and it seems to me that after installing both servos on the wings, using hinges and configuring flapperons on my radio my throw rates are wrong...

    Can someone measure the ailerons throw rates on a stock magister and post them? I should have done that before doing all the mods, but I guess I was too exited and didn't gave it enough importance. I'd appreciate if you could give me the rates from neutral position (How much up, and how much down) My ailerons seem to have no problem going down, but going up I get almost no movement (Close to 1/4 of an inch from neutral)

    Thanks in advance.

    Javier


    (in reply to Hixx)
           Post #: 158

    RE: Multiplex Magister RTF - 2/10/2006 1:04:51 AM   
    carlrich


     

    Posts: 170
    Joined: 1/24/2005
    From: cincinnati, OH, USA
    Status: offline     		Elevator:
    15mm Up
    12mm Down

    Rudder:
    25mm left and right

    Ailerons
    15mm Up
    No listing for down so assume the same.
    This info from the manual on my RTF Magister.

    I had wrecked mine (bent motor shaft) and ordered the replacement motor, gearbox, spinner, prop etc Combo.
    the new set up made noise and the original was very quiet. 4 flights and the pinion gear on the motor had all teeth stripped completely off. Fine pile of brass in bottom of gearbox.
    They are sending me a new combo package from Multiplex/Hitec.
    Phone: 858-748-8440 very nice people!

    Carl

    (in reply to javiergarzab)
           Post #: 159

    RE: Multiplex Magister RTF - 2/10/2006 1:17:45 AM   
    javiergarzab


     

    Posts: 42
    Joined: 3/31/2005
    From: CuernavacaMorelos, MEXICO
    Status: offline     		Thank you VERY MUCH! For some reason I wasn't able to find it on my manual. Now I'm really sure that I have several wrong things. Will try to figure out tonight on what it is. I'll give it a try at removing the flapperons on the radio.

    Javier

    (in reply to carlrich)
           Post #: 160

    RE: Multiplex Magister RTF - 2/10/2006 12:32:33 PM   
    carlrich


     

    Posts: 170
    Joined: 1/24/2005
    From: cincinnati, OH, USA
    Status: offline     		Will someone let me know if putting a servo on each wing to create flaps makes landing easier? I need to come in pretty fast due to weight and wing area. I'd like to slow that down with more lift from flaps IF it helps. This may also decrease the length of runway I need to get stopped.

    Carl

    (in reply to javiergarzab)
           Post #: 161

    RE: Multiplex Magister RTF - 2/10/2006 5:26:11 PM   
    javiergarzab


     

    Posts: 42
    Joined: 3/31/2005
    From: CuernavacaMorelos, MEXICO
    Status: offline     		Carl, If God allows it, I'll be able to test the magister with flapperons tomorrow. I'll post my results ASAP. I hope I can reduce landing speed/distance.

    I was able to correct the ailerons throw by just changing parameters on my radio, so now I have everything ready. I though I'd get a higher rate with the nylon hinges, but It's pretty much the same as in stock form, maybe just a little bit faster.

    Javier




    (in reply to carlrich)
           Post #: 162

    RE: Multiplex Magister RTF - 2/11/2006 4:51:47 PM   
    Hixx


     

    Posts: 57
    Joined: 1/17/2006
    From: Crewe, UNITED KINGDOM
    Status: offline     		Javier,
    can you post a pic showing how you installed your hinges as I want to do mine, but I'm not sure of the best way.

    Cheers

    (in reply to javiergarzab)
           Post #: 163

    RE: Multiplex Magister RTF - 2/12/2006 1:47:19 AM   
    javiergarzab


     

    Posts: 42
    Joined: 3/31/2005
    From: CuernavacaMorelos, MEXICO
    Status: offline     		Hixx, I'll post the pictures on Monday when I get my digital camera back. (I left it at my office) I used dubro medium size nylon hinges, they are pinned and I used 5 for each aileron. They are spaced almost 7cm each. I just cutted the ailerons, sanded the edge and placed some 1/2 inch deep x 1 inch wide cuts with a cutter on the ailerons and on the wing (Matching the positions), then I used Foam Safe CA (Thick) and installed the hinges to the wing. Be careful not to put the CA to close to the pin on the hinges or to allow gravity to move CA to it, or you'll end with a rigid aileron. I left the CA dry and then applied CA to the hinge on the aileron side and slide them into the aileron cuts. I decided not to use any kicker so that I could align the aileron. The gap between the aileron and the wing ended up at about 2 or 3 mm.

    I was able to fly today, even though I was only able to make 3 short flights (5 minute) here are the results of all my modifications:

    1.- Hinges,they work really well. I still have the same throw, but they are faster and help to perform better rolls. It might also be caused because I'm using a dual servo configuration, one on each wing... That should help the speed too, but I think that most of the merit goes to the hinges.

    2.- Flapperons... I have to admit that I'm very disappointed on this. They had no effect on lowering the stall speed. They had almost no effect, but to make it harder to fly. It seemed as if I lost a lot of wing roll capacity, and gained nothing from it. It was very windy, so I'll give them another try on a better day to see if my perceptions are wrong.

    3.- My aluminum home made motor mount broke on my 4th flight attempt, so now I'll give a try at some other materials. I haven't been able to find the Hacker A30-10XL mount on the internet. If anybody knows where I could find a replacement then I'll be very thankful.

    Regards.

    Javier

    (in reply to Hixx)
           Post #: 164

    RE: Multiplex Magister RTF - 2/12/2006 3:25:38 AM   
    carlrich


     

    Posts: 170
    Joined: 1/24/2005
    From: cincinnati, OH, USA
    Status: offline     		Sorry to hear that about the flaps. I just bought what I needed to put flaps on mine so I could slow it down.
    By the way, I have the RTF package and have found that 2 cell lipo will fly this plane with very little Amp draw. In temperatures just below freezing it pulls 16 amps and 110 watts static. Flight in this could is NOT spectacular with the 2 cell set up. It reduced weight and will fly a long time but climb is not strong. I believe in warmer weather it should do pretty well. I've tried three cells and that really works well with stock motor. Just happened to have a couple of 2600mah 2 cell I could put in parallel for 5200mah.

    Carl

    (in reply to javiergarzab)