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  1. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Foamhead, I've thought about a movable pilots position, but I'm pretty certain the C.G. problem can be overcome with a good design solution. I have someone with then engineering skills who is going to help me out. What do you think of Airplane PDQ? I have it, but it seems to "assume" many...
  2. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Holden, I haven't had a chance to read all the website, just brushed through it this morning, but plan to revisit it. But I see your point, I dont like the way a cat. boat handles in turns compared to my v-hulls, the turns flat and can catch an edge with the outside sponson and defininately...
  3. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Holden, I'll see if I can locate that book. Your right abouth the design process, its the same in architecture, you sometimes get so cluttered with ideas you lock up, I've literally walked away from a project in complete design block and days later been sitting drinking coffee and made a...
  4. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Orion (Bill) Thanks for the response, I'm not and engineer by any means but the concept of C.G. is basically the same as the R/C models I set up to fly... "nose heavy..add weigh to the tail and vs/vs and to much glue hear or there, battery in the wrong spot and you have to counter" I'm not...
  5. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Peter, I looked at canards, slick looking but I'm not that smart or stupid:D . I did a preliminary design on a twin boom/rear entry design but the hatch and ramp mechanism got a little complicated plus I had this recurring thought of the tie down failing and me and my chair going out the...
  6. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Orion, Thanks for your input. Yeah, its a challenge made more difficult by my desire to carry my wheelchair and me. Even though it will increase my frontal area, I have considered goin to a sided by side config. but that brings in other design challenges specific to my needs,. I guess that why...
  7. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Holden, Sounds like you got a handle on it. If you get some prelim 3-views done I'd love to see them sometine just out of curiosity. Been good chatting with you. Have a good day, Mike
  8. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Hi Holden, I mispoke when I said taildragger, I was thinking more of the classic amphib. design w/ retractable mains. You are aiming towards a low-slung pontoon type config.? After thinking about it I can see the problems of stability while sitting still, let alone the control issues you...
  9. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Holden, You really have my curiosity peaked. If I understand you correctly your kinda creating a flying SUV. in the form of a seaplane. You want to have the pilots station designed as aconvertible space, so that you have clear access to the cargo area for larger items i.e game & cargo. and...
  10. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Holden, Some of the major wheelchair mnfg. are Quickie & Invacare. Like I said your best bet for specs is to go to a vendor in your area. They may have brochures with specs that you could scan or trace. Have a good night, Mike
  11. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Holden, I have some ugly but close to accurate cad drawings of my chair and myselfs measurements. Chairs are usually custom fit to the individual but an average size could be exstrapolated easily. You could try looking up manufact. specs on the web or going to a local supplier of chairs in...
  12. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Holden, My primary design goal is for independant entrance to the cockpit. The demands of this criteria are: 1. A relativley low angle ramp entry, you mentioned curb cut aways, they are by law 1:12 a little steeper would be alright. 2. Head room, I myself require 52-54" floor to...
  13. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Richard, Your right as far as my fight characteristics goal, I am not really looking for a cross country machine, although I love the looks of a canard, I have to stay away from the "funtion follows follows form" and keep to my design goals of a nice stable design with some STOL...
  14. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    WHEEL CHAIR ACCES. A/C Richard R, Thanks for the info about the Cozy 4. I had put a rough design of a canard on paper and applied the same solutions you mentioned. I strayed away from the idea because I had no knowledge of how to balance that type of plane,but I will re-examine the idea now...
  15. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    Thanks George, I'll look into it. Mike
  16. M

    ESTABLISHING C.G IN A UNIQUE DESIGN

    I am in a wheelchair. I am designing an aircraft that I will be able to get into with my chair. I know the basics to C.G. placements and am researching every day on learning. I am shooting for pusher config. with a tandem seating arrangement. With myself and the chair in the forward position...
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