Log in

I forgot my password

RDMFC Social Media
RDMFC Facebook Page
Similar topics
    Latest topics
    » 2019 Llanfair TH Village Fete
    Electric Super 60 Empty2019-07-12, 18:53 by Rich

    » Proposals for Model aircraft flying ( CAA registration) April 2019
    Electric Super 60 Empty2019-05-08, 17:49 by Gary M Jones

    » Police crash
    Electric Super 60 Empty2019-04-14, 15:36 by Roy

    » Bit of indoors
    Electric Super 60 Empty2019-04-13, 16:49 by Roy

    » For Sale
    Electric Super 60 Empty2019-03-03, 23:44 by Charles E Cornes

    Saturday 7/7/18

    2018-07-07, 21:07 by Gary M Jones

    I was at the field today between 14:00 & 15:00 all on my own , good flying too. There is a dead sheep along the fence line towards the gate from the pits, I saw the farmer so reported this to her. I hope no one had plans for a BBQ Smile .

    Farmer …

    Comments: 1


    Electric Super 60

    Go down

    Electric Super 60 Empty Electric Super 60

    Post by Guest on 2009-02-17, 11:30

    I am considering converting an old Super 60 to electric power. Can anyone give me their thoughts on what motor/speedo/battery would be required to fly the model in a mannor befiting its age Question As the model requires recovering I am going to decrease the dihedral and fit ailerons. What should I reduce the dihedral to Question

    Keep well Very Happy

    Regards

    DaveS

    Guest
    Guest


    Back to top Go down

    Electric Super 60 Empty Re: Electric Super 60

    Post by Guest on 2009-02-17, 12:16

    Shame on you, shame!!!!! Junior 60's are only to be powered by diesel engines WITH THAT WONDERFUL AROMA!!!!!!!!!!!
    Put one of those new fangled sparky thingamy whotsits in it and you will go straight to hell and burn in the fires of amyl nitrate for all eternity. Evil or Very Mad Evil or Very Mad Twisted Evil Twisted Evil

    Guest
    Guest


    Back to top Go down

    Electric Super 60 Empty Re: Electric Super 60

    Post by Mark Barnes on 2009-02-17, 12:20

    whats the aprox all up weight Dave?

    as for Dihidral if your taking it out take it all out!

    M
    Mark Barnes
    Mark Barnes
    Club Secretary

    Posts : 6608
    RDMFC Bonus points : 8241
    Join date : 2008-11-16
    Location : Rhyl North Wales

    Back to top Go down

    Electric Super 60 Empty Re: Electric Super 60

    Post by Rich on 2009-02-17, 19:41

    I wouldn't consider taking all the dihedral out this will make it very unstable, perhaps reduce it to about 2" under one wing, they must of had about 6" to allow them to remain relatively stable using rudder as primary control.

    If I'm wrong, I'm sure Dr Andy with put us all right, he's pretty good at getting us to sleep at night.
    Rich
    Rich
    Treasurer/Membership Secretary

    Posts : 4729
    RDMFC Bonus points : 5651
    Join date : 2008-11-18
    Location : 53.3200°N, 3.4726°W

    http://www.futaba-rc.com/

    Back to top Go down

    Electric Super 60 Empty Re: Electric Super 60

    Post by Andy Sayle on 2009-02-17, 20:11

    Dr. Andy in the house! Actually, I don't have a PhD, so perhaps that should be preceded with "self proclaimed" Dr. Andy? Hmmm.

    There are two reasons for dihedral on an aircraft. The first is to introduce an amount of static stability in the roll axis. More dihedral = more static stability. This is pretty easy to understand, and see in action. The models with lots of dihedral tend to be nice and easy to fly, self correcting in the roll axis. Models with less dihedral tend to be more demanding to fly, and need more pilot input to keep steady in the roll axis.

    The second reason for dihedral, is to impart a degree of yaw/roll coupling onto an airframe, as Rich pointed out. With a rudder only aircraft, this coupling is desireable to ensure turns are nice and smooth. It is caused by the basic geometry of the wing, and the direction of airflow over it. As the aircraft yaws, the effective angle of attack of each side of the wing changes because of the dihedral, and this alters the lift distribution across the wing, thus causing the rolling. The more diehdral you have, generally the more yaw/roll coupling you get.

    The above statements are fairly generalised, and they will be affected by other factors, such as thrustlines, fin areas, swept areas, fuselage design, wing aerofoils, etc etc etc. The thing to bear in mind is that when you add ailerons to the wing, you don't need as much static stability in the roll axis, or as much yaw/roll coupling. This is because you have the ailerons to control the roll manually, and you can correct unwanted roll easily with them.

    The amount you need is purely down to personal preference. If you want the aircraft to be a nice aerobat with minimal coupling between yaw and roll, then see how it performs with no dihedral. If you want something that is still easy to fly (and quite stable in roll still), try as Rich says, and use 2" under one wing. This will still give enough stability, yet not be unmanagable Smile

    There are a few articles on the net about dihedral. Wikipedia gives a nice breif summary.

    As for what motor/ESC/battery, then a bit more info would help us here. What motor do you have in it at the moment? what prop is it turning? Any idea on the all up weight? What sort of performance do you want? Nice and sedate? enough for some aerobatics? Or "adequate" power Twisted Evil

    Lesson over, wakey wakey at the back there.....

    pirat

    Cheers
    Andy

    _________________
    Chicks dig slop free linkages....
    Andy Sayle
    Andy Sayle
    Club Chairman

    Posts : 4739
    RDMFC Bonus points : -487569787
    Join date : 2008-11-16
    Location : Abergele, North Wales

    Back to top Go down

    Electric Super 60 Empty Re: Electric Super 60

    Post by Sponsored content


    Sponsored content


    Back to top Go down

    Back to top

    - Similar topics

     
    Permissions in this forum:
    You cannot reply to topics in this forum