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 - 8/28/2006 10:44:07 AM   
    jooNorway


     

    Posts: 754
    Joined: 12/23/2004
    From: Naersnes, NORWAY
    Status: offline     		It could maybe be possible to put retracts on the Mag, but it is not the ideal model for this. Because you may have problems finding a suitable retract for the fuselage... Usually you retract the undercarriage into the wing, but on the Mag you need one which fold backwards into the fuselage... And you have to plan and prepare everything before you put the fuselage-halves together, making brackets, fitting servoes and so on. Don`t think it is worth trying on this model...
    But if I had been challenged to try I would have rebuilt the plane for tailwheel, not nosewheel. Then looked for a scale retract which retracts backwards. Something like the Cessna 185RG...

    (in reply to iamscottym)
           Post #: 201

    RE: Multiplex Magister RTF - 8/29/2006 4:52:33 AM   
    iamscottym


     

    Posts: 33
    Joined: 2/27/2006
    From: Elk Grove, IL, USA
    Status: offline     		Hmm...thanks for the advice on the tailwheel. It would definately be easier to land as a tail dragger. As for the retracts...I would probably make them myself- need not be too scale(for the magi anyway). Maybe I'll wait on the retracts..and just buy a new fuse when I'm ready to do it. I'll be running brushed for a little while anyway. I'll just get a new fuse when I'm ready to move up to brushless.

    (in reply to jooNorway)
           Post #: 202

    RE: Multiplex Magister RTF - 8/30/2006 10:01:33 AM   
    jooNorway


     

    Posts: 754
    Joined: 12/23/2004
    From: Naersnes, NORWAY
    Status: offline     		If you try and succeed I hope you post some pictures for us

    (in reply to iamscottym)
           Post #: 203

    RE: Multiplex Magister RTF - 6/17/2007 4:48:33 PM   
    Windwizard


     

    Posts: 16
    Joined: 6/17/2007
    From: Apple Valley, CA, USA
    Status: offline     		New member, first post. I just received my Magister from Horizon Hobbies on Friday. I want to use this plane for Aero Towing sailplanes. I have an E-Flite Power 32 motor for the plane. Will this be enough power? I also want to be able to do sustained vertical climbs (not while towing) like I can with my Acro Master.
    Thanks, Richard

    (in reply to iamscottym)
           Post #: 204

    RE: Multiplex Magister RTF - 6/18/2007 12:44:05 PM   
    javiergarzab


     

    Posts: 42
    Joined: 3/31/2005
    From: CuernavacaMorelos, MEXICO
    Status: offline     		Wow, this thread was almost dead! You should have no problem towing with the Power 32 motor... We are using the power 25 motor (Not for towing) and it performs great even at this height (6500 ft). I suppose the extra watts should be enough for you. What battery are you planning to use?

    Regards,

    Javier

    (in reply to Windwizard)
           Post #: 205

    RE: Multiplex Magister RTF - 6/18/2007 1:51:36 PM   
    Windwizard


     

    Posts: 16
    Joined: 6/17/2007
    From: Apple Valley, CA, USA
    Status: offline     		Javier: Thanks much for the info. I don't know for sure what battery to use. I'm thinking a 4s 4000mah Thunder Power. I'm new to RC, been flying about 5 months and largest motor I've flown is a Hacker 20L. Any ideas?

    Regards,

    Richard

    (in reply to javiergarzab)
           Post #: 206

    RE: Multiplex Magister RTF - 6/18/2007 2:39:08 PM   
    javiergarzab


     

    Posts: 42
    Joined: 3/31/2005
    From: CuernavacaMorelos, MEXICO
    Status: offline     		I would give it a run trough Motocalc so that you can be sure of the numbers before making the investment. It makes sense using a 4000 4S, it should give you around 12 minutes of flight time, and enough power to tow. But you'd better make sure. If you plan on flying electric planes often (Which I think is the way to go) then Motocalc is a great investment.

    Regards,

    Javier

    (in reply to Windwizard)
           Post #: 207

    RE: Multiplex Magister RTF - 6/18/2007 5:06:38 PM   
    Glacier Girl



    Posts: 6690
    Joined: 7/9/2004
    From: SomewhereIn, PA, USA
    Status: online     		don't forget too, if you are going with a 4S set up, most esc's bec's will not handle it. You'll have to go to a stand alone bec or a receiver pack.

    _____________________________

    "The Missing Man Formation"
    Looking heavenward you cannot help but shed a tear...mornful...lonesome...a hole that screams out almost as loudly as the roar of the engines that pass over head.

    (in reply to javiergarzab)
           Post #: 208

    RE: Multiplex Magister RTF - 6/20/2007 12:30:43 AM   
    Greg Covey



    Posts: 4322
    Joined: 5/24/2003
    From: Rochester, NY, USA
    Status: offline     		It's great to see this thread is still alive and kicking. Look at what I've done to my Magisiter! It is a wonderfully versatile plane.

    Project VTOL

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    _____________________________

    Visit my Web Hangar at www.gregcovey.com/rc.htm

    (in reply to Glacier Girl)
           Post #: 209

    RE: Multiplex Magister RTF - 6/20/2007 1:14:55 AM   
    Windwizard


     

    Posts: 16
    Joined: 6/17/2007
    From: Apple Valley, CA, USA
    Status: offline     		Javier, Glacier Girl and Greg:

    I downloaded the MotoCalc program this morning and I see that the 4S battery set up won't have a BEC, as you indicated. I can't get a valid report for the E-flite Power 32 and Phoenix 60 Amp ESC in the Magister because MotoCalc doesn't have any Thunder Power Lipo batteries listed that are bigger than 2100 mah. How do I get a 4000 mah Thunder Power into their system? Went to the LHS today and bought hinges for the Maggie and am finally starting the build.

    Richard

    (in reply to javiergarzab)
           Post #: 210

    RE: Multiplex Magister RTF - 6/20/2007 3:22:01 AM   
    javiergarzab


     

    Posts: 42
    Joined: 3/31/2005
    From: CuernavacaMorelos, MEXICO
    Status: offline     		Wow, and I thought I had pimped my ride! That's a huge mod Greg! I installed a Hacker A30-10XL, hinges in all control surfaces. A wireless camera and HS-65 servos closer to the ailerons, with a new linkage, increasing the aileron range. Now I can roll it almost as good as my FuntanaX50. I also installed a dubro landing gear and removed the old wire LG. It runs as good on land as it flyes. I installed a carbon fiber rod along the tail fin, to increase stability and it has greatly improved the performance on the hammerhead turns. BUT THAT'S NOTHING COMPARED TO A VTOL!!!! That seems as a good project!

    In the picture it seems as if you installed a third motor near the tail. Is that correct? It's a shame I can't get Quiet Flyer here in Mexico.

    Javier

    (in reply to Greg Covey)
           Post #: 211

    RE: Multiplex Magister RTF - 6/20/2007 3:29:22 AM   
    javiergarzab


     

    Posts: 42
    Joined: 3/31/2005
    From: CuernavacaMorelos, MEXICO
    Status: offline     		Richard, in Motocalc you can "build" the battery you need based on the available cells. For example, the TP 3S 4200 mah are built from 6 2100 cells wired 3 series each, 2 parallel. You should put "Series Cells" 3, and "Parallel Cells" 2 to have the resulting battery.

    Remember that you can update from the internet. If you look just for the batteries you should be able to find a TP4000 prolite cell that should work for you. Or you could "build" your "ideal" battery, and then look for something similar on the market.

    Regards,

    Javier

    (in reply to Windwizard)
           Post #: 212

    RE: Multiplex Magister RTF - 6/21/2007 1:28:48 AM   
    Windwizard


     

    Posts: 16
    Joined: 6/17/2007
    From: Apple Valley, CA, USA
    Status: offline     		Javier: I found the Thunder Power TP4000 Pro Lite that you mentioned, but the Max Burst Discharge is only 18C. I use a Thunder Power TP2500 in my Acro Master and it has a 20C Max Burst. Is it still OK to use that Pro Lite 4000? I did some more MotoCalc work today using the E-flite Power 32, Castle Creations 60 AMP ESC, Direct Drive APC 12x8 prop, etc. I got the same readings using an Electrifly 5000 20C Max Burst as I did with a Flight Power 3700 20C: Strong climbs and rapid acceleration, short take-off runs, no difficulty taking off from grass fields, and sufficient in-flight thrust for many aerobatic maneuvers. It would also readily loop from level flight. In further research, I'm interested in either the Great Planes Electrifly 11.1V 5000 mah 20C Burst or the Thunder Power 11.1V 4200 mah 3S2P 24C Burst. Would either of these be OK to use? There's only a $10 US difference in price.

    Thanks again,

    Richard

    (in reply to javiergarzab)
           Post #: 213

    RE: Multiplex Magister RTF - 6/21/2007 5:14:34 PM   
    javiergarzab


     

    Posts: 42
    Joined: 3/31/2005
    From: CuernavacaMorelos, MEXICO
    Status: offline     		Remember that the measure of C is related to the battery capacity. ie: A 2500 mah battery 10C would mean 25 Amps, while a 4000 mah battery 10C would mean 40 Amps. So using your numbers, the TP2500 20C would mean it can handle a 50 Amps max (Burst) current, and the TP4000 18C would handle a 72 amps current. I hope that makes it easier for you to choose.

    Regarding the 5000 mah vs 4200, I think you are missing the flighttime parameter. The 5000 should give you quite more flighttime. But I don't know the weight difference. The TP4200 is heavy enough, and where I fly it gives us about 12 minutes of flight time with a power 25 motor and a 13x8 APC prop. I prefer to fly mine with a lighter battery, as it performs better on the air... I use TP2100 batteries with a Hacker A30 10XL, and have flight time of about 5 minutes while staying on the safe side. I've used the TP4200 on my plane, but it feels quite heavier. Anyhow, I'd never change to a heavier battery but my friends who use the TP4200 would neither trade theirs too, so I guess you should give it a try.

    Regards,