RE: Hostetler 33% Decathlon  
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    • All Forums >> RC Airplanes >> Giant Scale Aircraft - General >> RE: Hostetler 33% Decathlon
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    RE: Hostetler 33% Decathlon - 10/9/2008 2:09:46 AM   
    Big_Bird



    Posts: 3330
    Joined: 12/18/2001
    From: Arlington, TX, USA
    Status: offline     		Don, the engines and servos that you mentioned will be a good choice. You should really enjoy the plane. Here is a video of my SD that I made while I let a friend fly it.

    http://www.youtube.com/watch?v=th_TT_cava0

    Here is a link to a 42% Super Decathlon that I am currently building.
    http://www.rcuniverse.com/forum/m_7846147/mpage_1/key_/tm.htm

    _____________________________

    Ken
    WACO Brotherhood #70

    (in reply to Don M.)
           Post #: 3301

    RE: Hostetler 33% Decathlon - 10/9/2008 2:16:53 AM   
    Kellermann



    Posts: 1169
    Joined: 5/4/2003
    From: Blumenau - SCSanta Catarina, BRAZIL
    Status: offline     		Don,
    on my 30% scale I used JR NES-537 Servos on all surfaces, except for elevator, I used Hitec HS-645 MG for each half.
    On rudder I put 2 x 537 coupled, just to feel a little better. Not really necessary.

    I would go for 645's on all surfaces like Ken did on his...

    Keep us posted if/when you jump on the project...

    Marcus




    _____________________________

    Take-off is optional, landing is mandatory
    http://cuttingedge.org/salvation.html - your life will never be the same...

    (in reply to Don M.)
           Post #: 3302

    RE: Hostetler 33% Decathlon - 10/9/2008 12:34:08 PM   
    Don M.



    Posts: 1838
    Joined: 3/2/2004
    From: Halifax, NS, CANADA
    Status: offline     		I'm really considering it. SIZE is my only problem, not sure if I can deal with moving this thing around I have a short van and it would mean the nose of it would need to travel between the front seats to get it all in. But what the heck eh !

    Here's some pics the builder has sent me. I just noticed that he has allowed for 2 servos on the ailerons. I like that idea but it does mean some kind of servo matching.

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    _____________________________

    I can only please 2 people every day and #2 just left.

    (in reply to Kellermann)
           Post #: 3303

    RE: Hostetler 33% Decathlon - 10/9/2008 1:48:58 PM   
    Kellermann



    Posts: 1169
    Joined: 5/4/2003
    From: Blumenau - SCSanta Catarina, BRAZIL
    Status: offline     		Don,
    IMHO if you are not going to use ultra precise digital servos, you may consider just wiring the wing servos servos in parallel or use a Y-harness.
    As said, I used 2 JR 537 coupled mechanically without any form of matching, I just used 2 brandnew servos and of course, tested the whole assemply before installing it. There was no differential that would force one servo and drain the battery.

    BTW, the plane looks good!

    Marcus

    < Message edited by Kellermann -- 10/9/2008 1:50:05 PM >

    _____________________________

    Take-off is optional, landing is mandatory
    http://cuttingedge.org/salvation.html - your life will never be the same...

    (in reply to Don M.)
           Post #: 3304

    RE: Hostetler 33% Decathlon - 11/11/2008 11:51:31 PM   
    tflyrc



    Posts: 42
    Joined: 10/18/2004
    From: Mooresville, NC, USA
    Status: offline     		Ken: I see you used HS645s on your SD. How have they been holding up for you? Centering OK? I am finishing up my wings and will start the fuse on my 30% shortly. I was thinking I need more power/centering but that me be from flying 33% IMAC planes...kind of spoils you. I do have some 645s' laying around looking for a home, just not convinced that I should use them in my 30%. It would also give me more battery options. Let me know if you have any further thoughts on it. Thanks.

    Enclosed are wings sheeted. Next is to mold the wingtips. Going to carve them out of blue foam, glass them, then remove the foam. BTW if anyone can send me a good dwg of the SD wingtip it would be appreciated. Hostetler only shows the Citabria wingtip.

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    (in reply to Kellermann)
           Post #: 3305

    RE: Hostetler 33% Decathlon - 11/12/2008 6:15:10 AM   
    Moodyman


     

    Posts: 70
    Joined: 10/9/2006
    From: N. Richland Hills, TX, USA
    Status: offline     		Here are a couple of pictures as well as a 3 view for you. Hope this helps, Keith

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    (in reply to tflyrc)
           Post #: 3306

    RE: Hostetler 33% Decathlon - 11/12/2008 9:45:35 AM   
    Kellermann



    Posts: 1169
    Joined: 5/4/2003
    From: Blumenau - SCSanta Catarina, BRAZIL
    Status: offline     		Hey tflyrc. that's one good loking wing! The ribs seem to be built up, did you actually build them ina jig or had them enlightened to look like?

    I was about to send the drawing but I see Keith has already done it...

    Marcus

    < Message edited by Kellermann -- 11/12/2008 9:46:11 AM >

    _____________________________

    Take-off is optional, landing is mandatory
    http://cuttingedge.org/salvation.html - your life will never be the same...

    (in reply to tflyrc)
           Post #: 3307

    RE: Hostetler 33% Decathlon - 11/12/2008 11:27:54 AM   
    tflyrc



    Posts: 42
    Joined: 10/18/2004
    From: Mooresville, NC, USA
    Status: offline     		Thanks Keith for the 3-view. This will work.

    Yes Marcus, I framed up the ribs in a jig using 1/8 square lite ply. Since they are all the same size it goes as fast as you can cut and glue. Way back in thread some where there are photos of them. Once you get the cap strips on them they become very strong.

    (in reply to Kellermann)
           Post #: 3308

    RE: Hostetler 33% Decathlon - 11/12/2008 2:57:00 PM   
    Big_Bird



    Posts: 3330
    Joined: 12/18/2001
    From: Arlington, TX, USA
    Status: offline     		I have had very good service out of my HS-645s I would use them if I was building a 30% Super Decathlon. I have never found centering to be a problem for the kind of flying I do.

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    _____________________________

    Ken
    WACO Brotherhood #70

    (in reply to tflyrc)
           Post #: 3309

    RE: Hostetler 33% Decathlon - 11/12/2008 11:57:42 PM   
    tflyrc



    Posts: 42
    Joined: 10/18/2004
    From: Mooresville, NC, USA
    Status: offline     		Thanks Ken. Think I will just go w/ the 645s since I already have them.

    I noticed that in your build you relocated your EL servos. If I recall they were originally mounted in the tail. My conclusion is that things were looking a little tail heavy. I am putting a 3W70 along with a canister muffler on mine. I plan on lightning the ply sides as you did, but I did plan on putting the EL servos in the tail. Just makes for an easier set up IMO. Any thoughts you have on the plane balance will be helpful, even though you have the 33%.

    (in reply to Big_Bird)
           Post #: 3310

    RE: Hostetler 33% Decathlon - 11/13/2008 12:52:57 AM   
    Big_Bird



    Posts: 3330
    Joined: 12/18/2001
    From: Arlington, TX, USA
    Status: offline     		"Any thoughts you have on the plane balance will be helpful, even though you have the 33%."

    You gotta do what you gotta do to balance it with minimal addition of dead weight. That may mean moving servos or batteries.

    _____________________________

    Ken
    WACO Brotherhood #70

    (in reply to tflyrc)
           Post #: 3311

    RE: Hostetler 33% Decathlon - 11/20/2008 1:52:13 AM   
    tflyrc



    Posts: 42
    Joined: 10/18/2004
    From: Mooresville, NC, USA
    Status: offline     		I've been playing w/ wing tips and here is where I am. Have the left tip primed to look for pits, etc. Did not come out too bad. Foam is still inside. I'll remove that shortly then decide if this is the method I will use for the other tip. Not perfect but it works. Alternatively i may just sand a set out of a foam core covered w/ balsa. Enjoy the pics.

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    (in reply to Big_Bird)
           Post #: 3312

    RE: Hostetler 33% Decathlon - 11/20/2008 2:13:57 AM   
    Jim J


     

    Posts: 245
    Joined: 8/25/2003
    From: Midwest City, OK, USA
    Status: offline     		The foam core as a plug is very useful. Some would go one step further and make a neg mold from the plug....but then there is the release agents and so forth. Depending on scale detail and weight, the option of balsa skin with a foam
    core isn't bad either. Lots of options to consider. I haven't gotten to the tips yet, but the framing is done...for about two years now....I guess winter and a "slowness" in business may give a little more time this winter....
    Keep up the good work.
    Jim J

    _____________________________

    Low and Slow

    (in reply to tflyrc)
           Post #: 3313

    RE: Hostetler 33% Decathlon - 11/20/2008 2:21:33 AM