RE: Extra 260 27% Hangar 9er  
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    • All Forums >> RC Airplanes >> 3D Flying! >> RE: Extra 260 27% Hangar 9er
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    RE: Extra 260 27% Hanga... - 7/24/2008 4:15:46 PM   
    Spoiler



    Posts: 321
    Joined: 6/5/2003
    From: Cape TownWestern Cape, SOUTH AFRICA
    Status: offline
    quote:

    ORIGINAL: wrpsr1911

    Test flew with OS 160As reported, Minimum Vertical. Just purchased a Moki 2.10, will try this. Any suggestions???WOODIE


    You could also try a Mentz 20x8 which is what I use on my 2.10. Pretty much unlimited vertical, just expensive if you nudge the runway on landing...

    (in reply to wrpsr1911)
           Post #: 3426

    RE: Extra 260 27% Hang... - 7/31/2008 1:29:49 AM   
    334755


     

    Posts: 25
    Joined: 11/12/2004
    From: Fayetteville, GA, USA
    Status: offline     		This plane has the same exact specs as the aeroworks 35cc extras. What are your thoughts on that?

    (in reply to Spoiler)
           Post #: 3427

    RE: Extra 260 27% Hang... - 8/22/2008 8:46:21 PM   
    Spoiler



    Posts: 321
    Joined: 6/5/2003
    From: Cape TownWestern Cape, SOUTH AFRICA
    Status: offline
    quote:

    ORIGINAL: 334755

    This plane has the same exact specs as the aeroworks 35cc extras. What are your thoughts on that?


    I thought they saw how many Horizon were selling and decided to do a 35cc size plane too!

    (in reply to 334755)
           Post #: 3428

    RE: Extra 260 27% Hang... - 8/29/2008 3:15:18 AM   
    jnj55024


     

    Posts: 9
    Joined: 7/14/2008
    From: Farmington, MN, USA
    Status: offline     		I have a 260 27% and have a problem with my rudder wanting to make the plane do a slow waggle in straight and level flight at 3/4 throttle or faster. It's not as fast as a flutter more like 2 oscillations per second or so. I am running a 4.8 V batt with HiTech 5645MG servos and have the servo in the tail for the rudder. It will hold a high alpha knife edge without fading or will do a full speed rudder turn no problem. The servo seems strong enough but it appears to be too loose while centered.

    What are possible causes for this? Would a larger more powerful servo help? The linkage seems as tight as anyone elses I've checked.

    I also have heard about a 6V system for radio/servos being better than a 4.8V. I assume this will just make the servos faster and stronger. Are there any other changes that need to be made to switch to 6V?

    I appreciate any help that is given.

    (in reply to Spoiler)
           Post #: 3429

    RE: Extra 260 27% Hang... - 8/29/2008 3:52:13 AM   
    cmoulder


     

    Posts: 514
    Joined: 7/30/2006
    From: Ossining, NY, USA
    Status: offline     		IMHO the 5645 is not robust enough for the rudder, and also that particular servo has a little too much slop at center. And once the oscillation starts, 4.8 volts doesn't have enough power to hold it. I had a big problem with elevator and aileron flutter on a AW Yak (50cc) with these servos, completely solved by using 5955's.

    So if the linkage is otherwise solid and tight, I would wager that going to 6 volts and using a 5955 (or something with a similar high torque rating) would solve the problem. Recently 5955's were on sale at TBM for $89, which is a very good price (making room for the 7955!). The 5955's have very little slop at center.

    I don't know your brand of Rx, but it should be able to handle 6 volts with no problem. However, if you use a Li-Ion or LiPo you will need a voltage regulator between the switch and the Rx. SmartFly regs are pretty good.

    _____________________________

    -- Bob

    (in reply to jnj55024)
           Post #: 3430

    RE: Extra 260 27% Hang... - 8/29/2008 4:24:58 AM   
    jnj55024


     

    Posts: 9
    Joined: 7/14/2008
    From: Farmington, MN, USA
    Status: offline     		I have a Spektrum DX7 with AR7200 receiver. I'll check the book to see if it mentions about voltage limitations. I just put in what the hobby shop guy suggested. I know a guy that had a 80 oz/in servo in the rudder like the instructions say and it wouldn't hold a knife edge it just melted out as the servo got soft but he never had a waggle like mine.

    Thanks for the info. I was leaning towards a higher end servo anyway.

    (in reply to cmoulder)
           Post #: 3431

    RE: Extra 260 27% Hang... - 8/29/2008 4:34:50 AM   
    jnj55024


     

    Posts: 9
    Joined: 7/14/2008
    From: Farmington, MN, USA
    Status: offline     		I now have another question after reading about these HiTech 5955 servos. I see it says they are programmable. Do I need to get a programmer to work with one of these?

    (in reply to jnj55024)
           Post #: 3432

    RE: Extra 260 27% Hang... - 8/29/2008 12:54:18 PM   
    mudpuppy


     

    Posts: 90
    Joined: 4/14/2006
    From: Salt Lake City, UT, USA
    Status: offline     		A programmer is not required for use. My plane is almost full of programmable servos and I do not even have a programmer.

    _____________________________

    AMA 867586

    (in reply to jnj55024)
           Post #: 3433

    RE: Extra 260 27% Hang... - 8/29/2008 1:20:03 PM   
    sevans16


     

    Posts: 314
    Joined: 11/16/2006
    From: Las Vegas, NV, USA
    Status: offline     		I bought one of these planes ready to fly. It had Hitech 645's all around. I had the rudder wag you described. I am running 6.0 volts. I switched to the 5645 on the rudder and it helped a lot. I still notice a small wag here and there.

    _____________________________

    AMA# 737516

    (in reply to mudpuppy)
           Post #: 3434

    RE: Extra 260 27% Hang... - 8/29/2008 1:41:30 PM   
    jfeenin


     

    Posts: 186
    Joined: 8/20/2007
    From: Conesus, NY, USA
    Status: offline     		The 5955TG is a better solution for the rudder as cmoulder has recommended. If you're gonne go cheap the servos aren't where you should do it.

    _____________________________

    Joe
    http://starbase4.com/

    (in reply to sevans16)
           Post #: 3435

    RE: Extra 260 27% Hang... - 8/29/2008 7:34:27 PM   
    jnj55024


     

    Posts: 9
    Joined: 7/14/2008
    From: Farmington, MN, USA
    Status: offline     		What do you think about using the new HiTec HS 7955-TG servo on the rudder? I see TBM has them going for $99 and free shipping and the 5955 for $95. I'm thinking go for the better one?

    (in reply to jfeenin)
           Post #: 3436

    RE: Extra 260 27% Hang... - 8/30/2008 12:19:42 AM   
    jfeenin


     

    Posts: 186
    Joined: 8/20/2007
    From: Conesus, NY, USA
    Status: offline     		the 7955 is the newer version I would get that, they have twice the travel resolution that the 5955 does...

    _____________________________

    Joe
    http://starbase4.com/

    (in reply to jnj55024)
           Post #: 3437

    RE: Extra 260 27% Hang... - 8/31/2008 3:26:54 AM   
    jnj55024


     

    Posts: 9
    Joined: 7/14/2008
    From: Farmington, MN, USA
    Status: offline     		Thanks for the advice everyone.

    I have a 7955 on order from TBM. Should be in on Wednesday, Everyone seems to be out of the 2700 MAH 6V battery packs though?? I assume it will work on my 4.8V battery until I can get a 6V purchased.

    (in reply to jfeenin)
           Post #: 3438

    RE: Extra 260 27% H