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  1. D

    Push-Pull Bonanza

    Good points for that size of airplane, however I'm thinking a smaller direction. Here are some notes or requirements I'm looking at for an affordable, twin engine, complex aircraft for home building that might resemble a Bonanza:
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    Push-Pull Bonanza

    Very nice, I like it.
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    Push-Pull Bonanza

    Yes, the original Fokker D.XXIII prototype X-4 had cooling problems with the aft engine as well.
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    Push-Pull Bonanza

    Good point. The Adams A500 is very nice, but a bit too big for what I had in mind: And yes, it definitely needs a v-tail. How about an inverted v-tail:
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    Push-Pull Bonanza

    Ah, yes. I will need a leading edge entry, and suicide doors. Fokker D.XXIII below:
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    Push-Pull Bonanza

    my latest crazy idea based on my fondness for the Bonanza, Skymaster and Fokker D.XXIII
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    Radial engine??

    I'd really like to build a twin-engine ultralight with a couple of 20-25hp radials. An update on radial engines for possible ultralight use: Gas Engines - troybuiltmodels.com Not shown is the RCS 400. Valach 800, 45HP ~$10k Valach Motors 800cc 45hp 7 Cylinder Radial Engine. Want! - blog -...
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    Alu skin thickness - Whats better weight reduction or dent resistance

    The Hummel Ultracruiser has a cantilevered wing, is skinned with .016" 6061-T6, ribs are .020" and bulkheads are .025". The spare is made from several layers of .020" 2024-t3. Magnesium alloy is about 64% the weight of Aluminum, and comparable in strength: Magnesium and Aluminum Properties...
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    5052-0 or Half-Hard

    Buy 5052-0 online here: 5052-H32 Sheet-5052 has very good corrosion resistance. Workability is rated as good, and machinability is rated as fair. This alloy is not heat-treatable. Execellent for Panels - Formable and Weldable (Federal Spec QQ-A-250/8)
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    Rotax BRP 1503 SC IC 215 HP Marine Engine

    Well, the Rotax has been sitting in my garage for 2 years now, and I've done nothing with it yet. I was busy building a shop and a boat (that could use this engine). I've been looking at it some more and I think the PSRU is going to be the hardest part to design & build to convert this...
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    Mustang-II VS RV-7

    yea, I found the thread while doing a little research on the two planes. If I were to build one of the two, I would pick the Mustang II because it can be built with removable or folding wings. I don't think any of the RV's have this option, but I'm not completely sure.
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    Mustang-II VS RV-7

    Here's a recent match-up between the RV-7 and the Mustang II. Great info for anyone deciding between the two. Flyoff: RV-7 vs. Mustang II - AOPA
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    Turbo Charged 2.1L Aerovee (VW) producing 100+ HP in Sonex tests

    If you don't want to watch the whole video, here are a few bits of info I got out of it: 1) the 80HP Aerovee weighs about 161 lbs; 152 lbs with the Nikasil cylinders. 2) It cost $6995 (80hp) and you assemble it yourself. 3) The turbo charged version in test weighs about 185 lbs. 4) Although they...
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    Turbo Charged 2.1L Aerovee (VW) producing 100+ HP in Sonex tests

    Should be available in 2012. Here are the links: 80 HP 2.1L Aerovee Sonex -- The Sport Aircraft Reality Check! 100+ HP 2.1L Aerovee Sonex Aircraft Hornets' Nest Research and Development Webinar recording EAA Video Player - Your Source for Aviation Videos
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    Rotax BRP 1503 SC IC 215 HP Marine Engine

    I agree, it needs to be tried. The price isn't bad at all unless you try to buy a brand new one from a seadoo dealer. You can pick up used Seadoo RTX with less than 50 hours for about $5-$6k. There's a guy on ebay that will completely rebuild them for about $2k. I picked up my complete engine...
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    Rotax BRP 1503 SC IC 215 HP Marine Engine

    I think I'll take off the Supercharger and Inter-cooler and adapt it to a lightweight 80hp VW engine. Maybe get 100-110 hp out of it. I'll the the now 155 hp Rotax in my boat.
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    2-Seat Tandem Mini-Imp?

    Searching previous posts I found this little guy: The Aeriks 200. Accomplishes everything I'm looking for in an aircraft except for the price. I believe many of you have commented on this design before. I don't like working with composites either, but I could see modifying the Mini-Imp to get a...
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    2-Seat Tandem Mini-Imp?

    Surely you intended to say that height is less significant than lateral position in a conventional airplane design. If we are only talking about a few inches I would agree, but if you put the tail directly behind the cg 16 ft the plane will fly. If you put the tail directly above the cg 16ft the...
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    2-Seat Tandem Mini-Imp?

    Perhaps your right, but the placement of the tail relative to the cg effects the pitching moment, and as this distance increases, the required surface area of the tail decreases.
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