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  1. geosnooker2000

    SkyVector Question

    Student pilot here with no experience, but a lot of book-learning. I have a question about using SkyVector to do a simple flight plan. So, I was goofing around with making a flight plan to fly from my home airport in TN to visit a friend of mine who lives in Sarasota FL. I chose as waypoints...
  2. geosnooker2000

    Testing to establish Vne

    So according to 23.335 ( I believe), it's all very cut and dried when you are designing to establish a base. Design Cruising Speed (Vc) = 33 * Sqrt (wing loading) Design Dive Speed (Vd) = 1.4 * Vc Never Exceed Speed (Vne) = 0.9 * Vd Then it says to flight test to expand...
  3. geosnooker2000

    Advice for new attendees/drivers to Osh

    We will be attending for our first time this year. I feel pretty confident about the trip, other than how to best approach for entrance into Scholler campgrounds. It appears that we are supposed to enter off Poberezny Rd. ? Any advice on that, and any other things would greatly be appreciated...
  4. geosnooker2000

    Main gear attachment location theory

    I'm looking at different main gear ideas for my design. I think I have settled on what I want to do, but would love it if you guys could critique this thought. (4 place all aluminum, total gross of as far under 2200lbs as I can get) I don't like the idea of spring gear because I DO like the idea...
  5. geosnooker2000

    Control surfaces actuators design/preferences

    What are the specific reasons torque tubes are preferred over tension wires? I know one reason would be, you never have to worry about checking the tension on a torque tube, and torque tubes can't "fray". What else?
  6. geosnooker2000

    Question about OpenVSP

    I get that you can design an airframe (or draw an existing one) in Open VSP and do "aerodynamic tests" on the computer, but I was wondering if it had any real-world modelling applications. For instance: suppose you want to design an all metal plane, and we all know compound curves are a big...
  7. geosnooker2000

    Customizable t-shirts with your airfield on them???

    Seems like 6 months ago or so (maybe a year ago... time flies), I was looking at a company on line that did hats and "T"s that would print your home field on it. It seemed like I saw lots of people with the same version (different airports), like they all got them from the same source. Now it's...
  8. geosnooker2000

    Where does one find an aerospace Engineer to hire

    If you want someone to do your calculations/structural design with letters behind their name? Next, and most important question - how much will I expect to pay for an all-metal design similar to a Piper Cherokee 180, but needs to be able to have NEAR ... I said NEAR ... RV-10 speed. Okay, let's...
  9. geosnooker2000

    What do y'all think is the absolute best

    material to use for construction blocks if you want to use them more than just for one plane. I've heard a lot of love for MDF. I'm an architect by trade, and I've had my share of experience with wood materials such as pressboard, MDF, different grades of plywood, etc. Hands-on experience. The...
  10. geosnooker2000

    aerodynamics question about tail within wing "blank"

    I was talking to a fellow EAA member about his lanceair he is restoring. He was a fighter pilot in his younger days, and he was telling me the Lanceair requires special training because on landing, the elevator is "hidden", or "blanked" in the wing wash. He didn't really get precise about why it...
  11. geosnooker2000

    [split thread] increasing Vne on the CH 640

    This is in an effort to keep subject matter where it belongs. If you want to see the engine discussion this came from, it is here: https://www.homebuiltairplanes.com/forums/threads/trying-to-achieve-turbonormalizing-the-home-built-way.32083/ IF.... IF you wanted to increase the Vne on the CH...
  12. geosnooker2000

    Trying to achieve turbonormalizing the home-built way

    I am struggling with a mechanical theory and was hoping for some expert opinions. If someone's intent was to build a 0-320 and turbonormalize it, there are a couple of very expensive "bolt-on" options. But it seems to me, one of the hallmarks of the experimental aircraft is innovation coupled...
  13. geosnooker2000

    Avex countersunk rivets?

    I have noticed Hummel H-5s use 1682-0412 rivets. I am looking for a flush rivet to use on a Zenith CH 640 type project, and don't want the hassle of bucking solid rivets. I have been all over the YouTubes high and low looking for a video dealing with FLUSH blind rivets. Can't find any. Even the...
  14. geosnooker2000

    Flaps definitions in theory vs. reality

    I can identify hinge flaps. They're pretty clear. They just rotate on a single axis within the body of the flap. My question deals with the vague grey area between slotted and Fowler flaps. At the beginning of the scale is the design where there are 2 or 3 tabs protruding down from the trailing...
  15. geosnooker2000

    Vne limit on CH 640

    I emailed the factory to ask "what is the limiting factor on Vne?". I got back a response that was polite enough, but basically said they would prefer not to answer. Then added that basically I would need to exceed the 240 bhp in order to even approach it. But I have some aerodynamic mods in...
  16. geosnooker2000

    A good engine to select for my project?

    Hello all. I am considering building a CH640 sometime in the future, and am doing a lot of research FIRST. I have been through various discussions over on the Corvair board and the Subaru board. Now I have some questions for you dedicated aircraft engine guys. Zenair recommends a powerplant...
  17. geosnooker2000

    Theoretical question about wing thickness

    Using the Zenair CH 640 as an example, Mr. Chris Heintz claims "I guess fat wings are one of my trademarks. The depth lets me build a strong wing that is very light, and gives excellent stall characteristics as well. Under 200 mph, the thickness doesn't contribute to significant drag, so why not...
  18. geosnooker2000

    O2 sensor/air fuel meter with 100LL?

    I noticed in a video that FlyCorvair recently posted that WW advocates installing an air/fuel meter that runs off of an O2 sensor. Now, admittedly, the sensor is not mounted inside the main stream of exhaust, but rather is in an inch-long port welded up to the pipe. My question is, is that...
  19. geosnooker2000

    Noob question about fuel tanks

    In our automobiles, the gas cap is vented. It is for a very good reason. Such a good reason in fact, that it was demonstrated to me and my daughter on her 2010 Ford Fusion. The filler neck had a recall because it would not allow air to enter the tank as the engine burned fuel. Her engine just...
  20. geosnooker2000

    What would these choices result in?

    Starting with a 120Hp version (3000cc), going 60 over-bore, stroker crank from Mr. Clapp, add turbo-normalizing, EFI, and an ECM. ETA: refinement of question, what would be the resultant engine weight and the resultant HP? (assume WW is accurate about the 3000cc with standard carb setup @...
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