RE: Walkera #4 Fixed Pitch Helicopter Forum  
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    • All Forums >> RC Helicopters >> Electric RC Helis >> Walkera Helis - Dragonfly, etc.. >> RE: Walkera #4 Fixed Pitch Helicopter Forum
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    RE: Walkera #4 Fixed Pitch Helicopter Forum - 10/19/2005 10:16:25 PM   
    GTX SlotCar



    Posts: 2070
    Joined: 10/7/2005
    From: Gorham, ME, USA
    Status: online     		cardgabe, it might hold for a long time if you glue it with CA, let it dry, then apply small cloth strips over the break, soaking them with CA. Let that dry for 24 hours and it should hold. It might not look real pretty, but you could keep you flying until your new frame arrives.

    _____________________________

    Gary
    SuperSkids® www.super-skids.com

    (in reply to cardgabe)
           Post #: 326

    RE: Walkera #4 Fixed Pitch Helicopter Forum - 10/19/2005 11:16:18 PM   
    GTX SlotCar



    Posts: 2070
    Joined: 10/7/2005
    From: Gorham, ME, USA
    Status: online     		When it takes off, it'll either tip to the right or skid to the left. It'll do either one at random. As far as I know, nothing can be done about this. It may also want to move forward or back. Adjusting the trim and CG helps this, though. It's a lot more stable when you get out of groud effects. The rotor wind hitting the floor will blow the little heli all over the place. So, at 18" it's easier to fly and at 3' it's quite a bit easier. I'm new at this, too, so I haven't had mine more than 4' off the ground. At 3' and higher it's smooth and pretty stable, but it won't just sit there hovering. It takes small stick movements. When it starts slipping in one direction, move the stick a little the opposite way, but anticipate what it needs. Don't wait until the last moment or you'll overreact. I've been able to hold mine in a fairly stable hover for 10 to 15 seconds at a time doing it this way.

    Balance your main blades. Have them fairly tight, but make sure you can move them. When they start spinning, they'll adjust to the right spot. As for the flybar paddles, they're supposed to be flat, but on a tip from somebody, I set mine at about +5° and I do find it a bit easier to hover.

    _____________________________

    Gary
    SuperSkids® www.super-skids.com

    (in reply to nathanacura)
           Post #: 327

    RE: Walkera #4 Fixed Pitch Helicopter Forum - 10/20/2005 5:11:43 AM   
    Schwede



    Posts: 137
    Joined: 9/25/2005
    From: Athabasca, AB, CANADA
    Status: offline     		WOHOO! Got my parts today. put everything together already. I am charging batteries and tomorrow it is helicopter time!!
    First picture shows the broken part, second picture the replacement part, third and fourth the assembled helicopter, fifth the shortened blades. Ready to go for tomorow!

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    < Message edited by Schwede -- 10/20/2005 5:15:13 AM >

    (in reply to GTX SlotCar)
           Post #: 328

    RE: Walkera #4 Fixed Pitch Helicopter Forum - 10/20/2005 7:31:30 AM   
    lost872



    Posts: 33
    Joined: 9/1/2005
    From: Perth, AUSTRALIA
    Status: offline     		Have received all my parts yesterday and stuck it all together spent some time on the balance of the roater head a blades found that the fly-bar was 10mm longer on one side, with all this fixed and just spinning up on the work bench the hole Helli is running smooth as not a wobble anywhere.

    Just have to wait for a good day to fly again.


    *Edit: Got me swallow charger going as well this is the best thing I have ever got since starting in the R/C scene will let you know when the batt is charged and you can cycle the batts, I love the thing if only it could cook.


    < Message edited by lost872 -- 10/20/2005 7:38:15 AM >


    _____________________________

    Trex 450XL (CDE)
    Align 430L

    (in reply to Schwede)
           Post #: 329

    RE: Walkera #4 Fixed Pitch Helicopter Forum - 10/20/2005 3:05:18 PM   
    nathanacura


     

    Posts: 483
    Joined: 10/19/2005
    From: powell, OH, USA
    Status: offline     		Thanks GTX slotcar ... I think I need some simulator time to keep my costs down. Otherwise I think I'll be buying rotor attachment parts way too often. I'm all over the place still, but I realize this takes some work. I also don't deal with it very well when I'm not oriented BEHIND the heli for some reason ... it seems on road RC training doesn't translate well. Nice tip on the flybar angle it did seem to increase lift and help with stability.

    Schwede - NICE paint work on that canopy. That break looks earily familiar! Do they make an aluminum version of that part? It carries all the rotational force of the blades and I forsee more breaks in my future!
    When you guys talk about balancing blades and flybars ... You're doing that only by measuring the lengths right?
    What's the reason for shortening the blades?
    Where did you get the parts?


    (in reply to GTX SlotCar)
           Post #: 330

    RE: Walkera #4 Fixed Pitch Helicopter Forum - 10/20/2005 5:51:23 PM   
    GTX SlotCar



    Posts: 2070
    Joined: 10/7/2005
    From: Gorham, ME, USA
    Status: online     		nathan, when we balance the blades, we make them weigh the same by adding tape to the lighter one. Imagine how much your heli would shake and wobble (and the stress on parts) if you tried to run it with only one blade attached. If your blades don't weigh the same, you get that effect but to a lesser degree. Parts will last longer and the heli is easier to fly when the blades are balanced.

    Making the blades shorter means they'll spin faster (less mass and less governor effect). This is supposed to give you more of a gyroscope effect and therefore make the heli more stable. I haven't tried it so I don't know how much of an advantage it gives. There must be some trade-off, though, as longer blades give a better gyroscope effect than shorter ones, but higher rpm (spinning faster) gives a better effect than spinning slower. Still, there are people who swear by the shorter blades. When I'm practicing and I get into trouble, I like to land softly, so I keep my blades at the stock length.

    You can also balance the flybar assembly (flybar and paddles) with tape, then make sure the flybar is centered on the heli.

    I get my parts online, and often on eBay. I try to order from people who ship from the US or Canada. There's a couple good ones on eBay that let you combine shipping, and it's cheap.

    _____________________________

    Gary
    SuperSkids® www.super-skids.com

    (in reply to nathanacura)
           Post #: 331

    RE: Walkera #4 Fixed Pitch Helicopter Forum - 10/20/2005 7:53:44 PM   
    Schwede



    Posts: 137
    Joined: 9/25/2005
    From: Athabasca, AB, CANADA
    Status: offline     		nathanacura,

    Thanks for the compliment on the paint. I Airbrush as a hobby.. mostly Motorcycles:http://70chopper.2ya.com/
    I wish someone would make these parts out of aluminium or something. I should have ordered a dozened of those..
    I usually get my parts and other things off Ebay since I live in a small town in Canada. Special parts like that are hard to come by, even in the nearest city (Edmonton). The parts in the picture are from HobbyJapan www.hobbyjapan2000.com. Took a little while but hey, I am used to it.. Next time I will give helihobby a try.
    Wish me luck on my test flight later this afternoon (it is 12:51pm here). Will see how those shorter blades are working.

    Gunnar






    quote:

    ORIGINAL: nathanacura

    Thanks GTX slotcar ... I think I need some simulator time to keep my costs down. Otherwise I think I'll be buying rotor attachment parts way too often. I'm all over the place still, but I realize this takes some work. I also don't deal with it very well when I'm not oriented BEHIND the heli for some reason ... it seems on road RC training doesn't translate well. Nice tip on the flybar angle it did seem to increase lift and help with stability.

    Schwede - NICE paint work on that canopy. That break looks earily familiar! Do they make an aluminum version of that part? It carries all the rotational force of the blades and I forsee more breaks in my future!
    When you guys talk about balancing blades and flybars ... You're doing that only by measuring the lengths right?
    What's the reason for shortening the blades?
    Where did you get the parts?




    (in reply to nathanacura)
           Post #: 332

    RE: Walkera #4 Fixed Pitch Helicopter Forum - 10/20/2005 9:38:04 PM   
    cptsnoopy


     

    Posts: 540
    Joined: 2/26/2005
    From: Phoenix, AZ, USA
    Status: offline     		just a quick point about the stock walkera blades vs the replacement blades. I whacked my #4 the other day and it had the last set of stock blades on it. they are just a tad more gray than the replacement blades but they work quite a bit better. when I flew the heli before with the stock blades and the 380SD motor, the battery lasted about 20 minutes. now with the replacement blades the battery only lasts about 12 minutes. quite a big difference. I am going to see about getting some like-90 blades to see if they will work better.

    (in reply to Schwede)
           Post #: 333

    RE: Walkera #4 Fixed Pitch Helicopter Forum - 10/20/2005 11:36:43 PM   
    xelltronics


     

    Posts: 15
    Joined: 9/30/2005
    From: Norwalk, CA, USA
    Status: offline     		Just want to share my latest walker makeover...Jet Ranger Body

    Stock 370 motor, receiver, cirrus 09 servos, flies 20 minutes on a 11.1V/1000 mAH battery




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    (in reply to cptsnoopy)