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 - 12/21/2007 4:02:45 PM   
    Big_Bird



    Posts: 3170
    Joined: 12/18/2001
    From: Arlington, TX, USA
    Status: online
    quote:

    ORIGINAL: Kellermann

    Just for you guys to know: although I am slow on working on my SD, it's almost done - but will wait for a new motor. Yes, a motor, not an engine.
    I decided to switch completely to electrics, and will power this model with an AXI 5345/18 Gold with an JETI Advance 90 plus and 10S2P LiPo Batteries, driving a 22x12 Scale Prop. AXI people say it's more than enough power to haul this plane through basic, scale aerobatics...

    I am selling my NIB Zenoah ZG-62 with JumpStart from CH electronics...

    See ya guys around

    Marcus from the hot southern hemisphere

    Hi Marcus, if engines are internal combustion and motors are electric then why is General Motors not called General Engines?

    Is that motor equivalent to a G62? What RPM will will it turn a 22x10? or 22x12? How does the full setup (battery, esc, motor, and charger) compare to a G62 and CH Jump Start combo?

    Merry Christmas and Happy New Year to all of you.

    _____________________________

    Ken
    WACO Brotherhood #70

    (in reply to Kellermann)
           Post #: 3201

    RE: Hostetler 33% Decathlon - 12/21/2007 5:52:25 PM   
    Kellermann



    Posts: 1125
    Joined: 5/4/2003
    From: Blumenau - SCSanta Catarina, BRAZIL
    Status: offline     		Well, Ken, that's a question I can't answer - the only thing I know is that the difference is as commonly as described, although I tend to believe that both can be considered engines or motors, since both of them turn one form of energy into another...
    I just used the terms as commonly referred to...

    As for the AXI, I checked their HomePage and this motor is said to replace any 60-80cc Gas Engine. It's said to put out 3KW on 10Lipos.
    I sent an email to them describing my Decathlon, specs, weight, etc, and they confirmed that one is THE motor for this purpose.
    They have several categories described there, with specific weights + motor/batt/prop combos, ranging from 15lbs 3D Aerobatic clones to 33lbs trainer/tow planes - guess the SD rather fits this category.

    I don't now yet the specific weights, but my experience with the Mutley conversion is that even with a chunky 6s2p Lipo it's some 900 grams (some 32 oz) lighter that with the 3W24 along with choke and gas servos + linkages, tank and fuel lines, all of them removed for the electric version.

    It's known that the G-62 is a heavy(ier) engine (than others, like a ZDZ 60, for example). Therefore, taking it out as well as tank+fuel lines including the fuel filler, linkages and choke+gas servos, I estimate a difference of same proportion. I have yet to check the weight of the AXI Outrunner.
    I will document all these items on a spreadsheet and let you guys know.

    Meanwhile, MERRY X-MAS to you all!!


    _____________________________

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

    (in reply to Big_Bird)
           Post #: 3202

    RE: Hostetler 33% Decathlon - 12/24/2007 12:07:40 PM   
    4unlimited



    Posts: 69
    Joined: 7/10/2005
    From: OostdorpGelderland, NETHERLANDS
    Status: offline     		Hai Marcus,

    Well my Super Decathlon is still on paper . . . . . . job takes to much spare time . . . . but one day . . .

    Considering your thoughts on the AXI brushless option:
    Ever heard of: Herr Andreas Reisenauer or Rolf Strecker??
    www.reisenauer.de
    www.rs-e-motoren.de

    Andy (Andreas) adviced me some brushless engines for my Tangent Alpina 4 metre sailplane, SebArt Katana and (old) Robbe Olga sailplane. Based upon his calculations and my personal "flight-envelop" he gave some advice RS-brushless engines with Jeti controllers. I was very impressed by the effectivity and power these brushles deliver.

    Just send him an e-mail and ask for his advice, maybe it's a match.

    Regards,
    Rick

    < Message edited by 4unlimited -- 12/24/2007 12:09:05 PM >

    (in reply to Kellermann)
           Post #: 3203

    RE: Hostetler 33% Decathlon - 12/29/2007 12:19:10 AM   
    Kellermann



    Posts: 1125
    Joined: 5/4/2003
    From: Blumenau - SCSanta Catarina, BRAZIL
    Status: offline     		Thanks Rick,
    Sounds good! I will seek their advice, thanks for the links.

    I already wrote them, awaiting their answer after the holidays.

    Tomorrow I'll have another e-flying session...

    Rgds
    Marcus

    AND HAPPY NEW YEAR to you all!!

    _____________________________

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

    (in reply to 4unlimited)
           Post #: 3204

    RE: Hostetler 33% Decathlon - 1/5/2008 6:17:13 AM   
    Love1/4Scale



    Posts: 194
    Joined: 8/27/2003
    From: Chambersburg, PA, USA
    Status: offline     		Hello all....good looking projects going on in this thread. I just started a 30% Hostetler SD for a customer. I wont clog this thread with pics but if anyone is interested they can be seen at http://www.aviationstation.net/decathlonpage1.html Need to take some time and read all the posts here and see what to beware of. So far, the kit cutter has left much to desire

    (in reply to Kellermann)
           Post #: 3205

    RE: Hostetler 33% Decathlon - 1/5/2008 2:32:18 PM   
    Big_Bird



    Posts: 3170
    Joined: 12/18/2001
    From: Arlington, TX, USA
    Status: online     		I sure enjoyed the photos. That is an interesting wing tip shape. Although I built the 1/3 scale Hostetler SD I couldn't visualize his plans producing any where near the correct wing tip shape so I carved mine out of solid blocks and hollowed them out. I realize that as a custom builder you must stick by the plans even if they are wrong. Your craftsmanship is superb.
    1st photo: the wing tip that you built by the plans. 2nd photo: the wing tip that I carved. 3rd and 4th photos: full scale SD

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    _____________________________

    Ken
    WACO Brotherhood #70

    (in reply to Love1/4Scale)
           Post #: 3206

    RE: Hostetler 33% Decathlon - 1/5/2008 6:10:32 PM   
    Love1/4Scale



    Posts: 194
    Joined: 8/27/2003
    From: Chambersburg, PA, USA
    Status: offline     		Thanks Ken...I dont necessarily always stick to the plans but this one is pretty much just a standoff scale build so Im not doing many mods. I agree that the wingtip per plan doesnt quite look right. There is more blocking/sanding/shaping that has to go on on the bottom side yet but Im still not sure that it will produce a true scale outline. Im hoping to finish up the bottom of this wing panel tonight so time will tell.

    (in reply to Big_Bird)
           Post #: 3207

    RE: Hostetler 33% Decathlon - 1/5/2008 10:45:12 PM   
    Love1/4Scale



    Posts: 194
    Joined: 8/27/2003
    From: Chambersburg, PA, USA
    Status: offline     		Calling all Hostetler SD Masters....Im at the point of sheeting the bottom of the first wing panel and Im not seeing any details for wing attachment. This is the first Hostetler design Ive built so Im not familiar with his drawings that much. I have to believe there is more holding the wings on than the struts correct? Is the attachment left up to the builder? Im in the process of reading through this thread but so far havent come across much about the wing attachment. It appears some are permanently fixing the center section and some are making them removable. Any input while I catch up on reading would be appreciated.

    (in reply to Love1/4Scale)
           Post #: 3208

    RE: Hostetler 33% Decathlon - 1/5/2008 10:49:31 PM   
    goldwaterman


     

    Posts: 55
    Joined: 3/4/2007
    From: Rochester, NH, USA
    Status: offline     		Nice work on the 30% Decathlon! You did a great job with the photo documentation. I'm finally about to begin building my 30% SD . Are you planning on posting additional pictures of the build on your site? Best regards, Michael.

    (in reply to Love1/4Scale)
           Post #: 3209

    RE: Hostetler 33% Decathlon - 1/6/2008 3:28:36 AM   
    Love1/4Scale



    Posts: 194
    Joined: 8/27/2003
    From: Chambersburg, PA, USA
    Status: offline     		Per plan wing tip...looking more Cub-like than SD. Still needs a bit of shaping to get the right contour but you can get the idea.

    Michael...yes, I will be updating the site as work progresses. I photo document all projects on the website so the owners can follow progress.

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    < Message edited by Love1/4Scale -- 1/6/2008 3:29:39 AM >

    (in reply to goldwaterman)
           Post #: 3210

    RE: Hostetler 33% Decathlon - 1/6/2008 4:30:55 AM   
    Big_Bird



    Posts: 3170
    Joined: 12/18/2001
    From: Arlington, TX, USA
    Status: online
    quote:

    ORIGINAL: Love1/4Scale

    Calling all Hostetler SD Masters....Im at the point of sheeting the bottom of the first wing panel and Im not seeing any details for wing attachment. This is the first Hostetler design Ive built so Im not familiar with his drawings that much. I have to believe there is more holding the wings on than the struts correct? Is the attachment left up to the builder? Im in the process of reading through this thread but so far havent come across much about the wing attachment. It appears some are permanently fixing the center section and some are making them removable. Any input while I catch up on reading would be appreciated.

    I only have experience with the 1/3 scale version. I would think the 1/4 scale would be very similar. The wing center section is held on to the fuselage by 4 "J" bolts. I don't remove it. The ply pieces extending from the center section plug into boxes in the wing. There are 6-32 brass inserts on the bottom of these ply pieces. I have 6061-T6 aluminum tabs in the ends of the struts. The struts are not removed from the wing for transportation. When the wing panel is slid into place a 6-32x1" socket head cap screw goes up from the bottom into each spar. There is a 6061-T6 1/8" aluminum piece which goes through the fuselage and is bolted to the LG ply plate. The tips of the aluminum piece are bent up to match the strut attachment at the fuselage. A 6-32 socket head cap screw secures the strut to the aluminum piece. This is a deviation from Hostetler's design. The last photo shows a pin to stabilize the trailing edge of the wing.

    By the way, what is your first name or the one you go by?

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    _____________________________

    Ken
    WACO Brotherhood #70

    (in reply to Love1/4Scale)