World Models p-51(giant 80" WS)  
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    • All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> World Models p-51(giant 80" WS)
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    World Models p-51(giant 80" WS) - 8/12/2002 8:30:29 AM   
    Kalos



    Posts: 31
    Joined: 2/25/2002
    From: Oxford, Mississippi
    Status: offline     		How does it fly? Looking to buy one due to the fact that i bought a built Top-Flite p-51 that has flown once and scared the hell out of our most seasoned pilot. He suggested I gut it and hang it in my restaurant. Was wondering how the WM flies and if it is squirley at all. If anyone has one what engine? BTW......I fly off grass.......possible?

    < Message edited by Kalos -- Aug 13 2002 4:05AM >

    _____________________________

    Helicopters are for the "birds"!!!!!!!
           Post #: 1

    World/Airborne P-51 - 8/12/2002 8:46:39 AM   
    fredscz


     

    Posts: 529
    Joined: 1/7/2002
    From: Southern, IL, USA
    Status: offline     		I have a World P-51 that is a super plane. I have powered it with a Saito 72, OS46 FX and now a Saito 91. They all flew it real well but the 91 flys it at 1/2 throttle and sounds good doing it. The only negative points would be that the ailerons need high rates at lower speeds and the lousy wire they use on the retracts will bend at every opportunity no matter how easy you land it. I have moved the battery around and so far I have not had to add any extra weight.
    " Try it you will like it"
    Fred

    (in reply to Kalos)
           Post #: 2

    World Models p-51(giant 80" WS) - 8/13/2002 8:46:32 AM   
    GC Flyer-RCU


     

    Posts: 55
    Joined: 7/12/2002
    From: Ione, CA, USA
    Status: offline     		Great ARF!
    I power mine with an OS 70 FS , as I couldn't bear to put a two stroke in a warbird ( even an ARF ) :-) It pulls it around quite nicely at 1/2 throttle, and sounds great. When you put the coals to it though, it is rock steady, and high speed-low passes w/retracts up look fantastic! Our local clubs race them with 70s and 91's for added fun.
    As fredscz noted though, the retracts are REALLY easy to bend, so just get used to bending them back. I recently even broke the left retract pushrod, and it was not a hard landing at all. I don't like the thinner black spring steel they used for the pushrod material, so I changed it and the clevis to good ol' American steel ( a little thicker, and not as brittle ).
    The low speed characterisitcs are a little quirky, but not unmanagable. As fredscz noted, the ailerons benefit from a little more throw at slow speed. But be careful here though....
    Also, keep the speed up on final approach. Get it too slow, and it wants to tip stall, or worse yet, snap. Land it with a little speed, on the main gear, chop throttle and watch her settle down for a nice rollout.
    In conclusion - for the money it's a nice little plane!


    _____________________________

    Chris Larson
    Gold Country Flyers

    (in reply to Kalos)
           Post #: 3

    Correction!!!! - 8/13/2002 9:05:11 AM   
    Kalos



    Posts: 31
    Joined: 2/25/2002
    From: Oxford, Mississippi
    Status: offline     		Sorry guys I forgot to say that i was looking at the giant scale(80" WS) p-51. I would have to assume that the flight characteristics would be similar though. I really appreciate the posts!!!! Im just in love with the warbirds all of a sudden so i want to be sure I dont ruin it for me by busting up a plane on the first go-round. All advice is greatly appreciated.........in a year or so I would like to think that I can be of some help to someone else.......Long live my lifeline RCU!!!!!!!!!!!!!!!!!!!!!

    _____________________________

    Helicopters are for the "birds"!!!!!!!

    (in reply to Kalos)
           Post #: 4

    World Models p-51(giant 80" WS) - 8/13/2002 11:58:00 AM   
    14th_Reaper



    Posts: 374
    Joined: 2/19/2002
    From: Tulsa, OK, USA
    Status: offline     		Just finished mine except for the finishing details on the decals. Gonna get some break-in time on the engine and possibly a first flight tomorrow. Will let you know what she is like then.

    (in reply to Kalos)
           Post #: 5

    World Models p-51(giant 80" WS) - 8/14/2002 4:39:47 AM   
    14th_Reaper



    Posts: 374
    Joined: 2/19/2002
    From: Tulsa, OK, USA
    Status: offline     		Boooo Hisss... Rain sucks!! hahaha ok maybe tomorrow...

    (in reply to Kalos)
           Post #: 6

    HAHA - 8/14/2002 5:05:04 AM   
    Kalos



    Posts: 31
    Joined: 2/25/2002
    From: Oxford, Mississippi
    Status: offline     		Well.....better luck tomorrow!!!! Let me know how it goes and good luck!!

    _____________________________

    Helicopters are for the "birds"!!!!!!!

    (in reply to Kalos)
           Post #: 7

    Miss America - 8/14/2002 11:36:25 AM   
    homebuilder


     

    Posts: 5
    Joined: 3/21/2002
    From: Fresno, CA, USA
    Status: offline     		My friend Eric and I have been flying a World Models GS P-51 for 15 months with great success. We have had some problems with the retracts but seem to have them solved by reinforcing the gear strut with blocks to prevent bending under load from the servo. Power is from a sweet Moki 2.1 whose speed keeps us on our toes....but has a great sound when it flys by.

    Hope you have a great time with this plane and watch out when landing, especially without flaps, as it will surprise you with how fast it lands.

    Good flying
    Mark
    Fresno,CA

    P.s Get some good and hard wheels...the stock wheels are too soft and will come off the hubs if the plane is turned hard in a effort to slow down when landing.

    _____________________________

    "Love to fly fast and turn left"

    (in reply to Kalos)
           Post #: 8

    World Models p-51(giant 80" WS) - 8/15/2002 8:16:18 AM   
    14th_Reaper



    Posts: 374
    Joined: 2/19/2002
    From: Tulsa, OK, USA
    Status: offline     		Went out tonight and ran the engine for the first time. The MDS 2.18 sounds awesome on this bird and puts out quite a bit of thrust to me. All guess work at this point but I can tell you it really wants to pull the bird hard! Decided to taxi it a bit but should have waited. It went down the runway very straight but at an idle it seems that the MDS still has plenty of power. Got to the end of the runway and the guy with the radio tried to turn it around and the left gear collapsed. Not much of a problem other than a scrape on the pretty spinner and the wing tip got a bit scratched up. Took the wing off and looked at the retract servo and the stock JR Horn had completely busted in half! a very clean break. Has anyone else noticed this problem? The thing that makes me nervous is that the gear seems shaky at all times. Anyone know of a way to strengthen its footing? I am really anxious to get this bird in the air! With the big 2.18 up front I am gonna have to do some serious weight balancing. any suggestions?

    (in reply to Kalos)
           Post #: 9

    World Models p-51(giant 80" WS) - 8/15/2002 9:58:19 PM   
    Capt G



    Posts: 826
    Joined: 1/27/2002
    From: NV
    Status: offline     		I have the MS AM II version. As you have found out - the weak spot is the gear. Replaced mine with spring airs. Flys great with Moki 1.80- and lands at a brisk walk.

    (in reply to Kalos)
           Post #: 10

    really like mine - 8/18/2002 9:36:36 AM   
    rfw1953



    Posts: 1346
    Joined: 7/9/2002
    From: Hampton Cove, AL, USA
    Status: offline     		I completed my WM P-51 just in time for our War bird event. In fact, the maiden flight was the morning of the event so things were really a bit crazy. Maiden flight went perfect with only minor trim needed. Using an OS 160 FX which is plenty of power. I know it's a two stroke, but it sounds like a four and really performs well in this plane. It flies more like an acrobatic airplane than a war-bird. It comes in at 17 pounds which helps it fly easily. I am still fairly new to the hobby and had much help from our field chairman who also has one, which I used as an example in assembling mine. The directions from WM are terrible so it really helps to have some expert help and especially a model already assembled to use as a guide.

    I threw away the pull pull hardware and elected to use two Futaba S9001 servos for the elevator. Also used a S9001 for the rudder and S9002's for the ailerons. Using a Futaba Super 8 radio and Futaba eight channel receiver. Didn't have to add any weight with the receiver and battery far forward.

    The cowling comes in three sections which is probably the most challenging part of the ARF to assemble. You really have to grind and fit to get it just right. I also had to grind the ends down a bit on the wing joiner to get a tight fit with the wing assembly. Like our field chairman, I used epoxy and assembled the wing half's together. Used wire harness for the LG, flaps and Ailerons. Used separate channels for the elevator.

    She takes off straight down the run way, climbs out nicely and flys well. I found it easier on the landing approach than the Giles 1/4 scale which is the only other Big Bird that I have any experience with. She wants to float on final which is probably because I haven't yet gotten use to the best approach speed. Flaps work and assist nicely. I have to give this ARF kit a thumbs up. Very nice airplane.

    Hope this helps. Good luck.

    rfw1953
    RCRC Huntsville, Al.

    (in reply to Kalos)
           Post #: 11

    World Models p-51(giant 80" WS) - 8/19/2002 4:08:31 PM   
    rc34074


     

    Posts: 851
    Joined: 3/30/2002
    From: lexington, OH, USA
    Status: offline     		i have finally finshed and flown my world gs miss america. this is a very easy to fly mustang. it takes off easily as the suppiled tailwheel controls it down the runway well, although i have increased the rudder travel for ease of turning around/control on our 45 foot wide runway.

    it flies easily on this big wing. it does have the typical p51 tendency to snap out of a slow loop. so if you are doing low speed flying be careful of low altitude loops .

    mine is a bit heavier than some as i am using a g38 for power but it floats in on landing. this is where it surprised me. i expected it to need about as much elevator as my 60 size warbirds on landing but this thing just floated by with that much elevator, so keep this in mind. it will land quite slow, so while i will not likely land this slowly very often it is good to see that i have the option.

    it will drop a wing when it stalls but this is not severe and can be easily controlled with the ailerons if you are ready.

    ed

    _____________________________

    "there are fighters and there are targets"

    (in reply to Kalos)
           Post #: 12

    G38 - 8/20/2002 1:57:49 AM   
    cpierre82


     

    Posts: 58
    Joined: 12/15/2001
    From: Weddington , NC, USA
    Status: offline     		how was the installation of the g38, did you have enough
    room in the cowl?

    charles

    (in reply to Kalos)
           Post #: 13

    World Models p-51(giant 80" WS) - 8/20/2002 4:15:59 AM   
    rc34074


     

    Posts: 851
    Joined: 3/30/2002
    From: lexington, OH, USA
    Status: offline     		the cowl was big enough for the overall engine, except the carb sticks out through a hole i made in the cowl. i am using a jtec muffler to keep the noise level down and so i needed to make 2 good sized holes for the muffler tubes, which stick out the bottom of the cowl about an inch or so. also it needed an opening on the bottom of the cowl for the spark plug wire and the plug, which stick out a bit. but the only thing that extends out the side is the carb. i did buy the twister carb mount from hangar 9 for this engine so the throttle pushrod has a straight shot to the throttle.

    i imagine that if you used a smaller muffler it would pretty much fit in the cowl. i did cut the bottom 3/4 inch of the firewall off to clear the aluminum casting on the muffler, as i didn't want to shift the engine forward any. i then added a piece of 3/8 plywood to the back of the bottom of the firewall to replace this piece i removed.

    i used the g38 as this is my first gas engine powered plane and i had the g38, so when i saw this gs miss america i decided to buy it and use the g38 in it. i am still getting the hang of how to adjust the carb on this engine so it is not running right but it still flies ok but is a bit slow for a p51 tho. i think i need to lean out the top end a bit as it runs 7400 on the ground with my 18-10 prop but it doesn't unload and get up to that speed in the air. right now i think i am probably getting about 6000 or so in the air, but next time fly i will tune it a bit leaner, as it seems the g38 carb needs to be set right at where you want it to run in the air- it doesn't lean out a bit up there. i had set it a bit rich as i was used to this in my glow engines but i am told not to do this with a gas engine. so i will try this next. with full rpm this plane should perform well, although i am sure with a big 4 stroke or the os 1.6 or a moki it would perform even better. but i knew that when i decided to build it with the g38

    by the way i also put spring air 404 retracts in it instead of the supplied retracts. the spring airs work like a champ!! plus they are tough enough to survive my landings .

    ed

    _____________________________

    "there are fighters and there are targets"

    (in reply to Kalos)
           Post #: 14

    Miss America - 8/20/2002 8:14:43 PM   
    fw190d9



    Posts: 506
    Joined: 12/15/2001
    From: Seguin, TX, USA
    Status: offline     		Guys, There are some build along pics on my webpage of the GS miss america if anyone is interested. I know Ed has seen them but they might be a help to others. Mine is still going strong after over 55 flights plus 2 fly-ins. The spring airs are trouble free and the zdz is really starting to put out some power after breaking in.
    The