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Type: Posts; User: Marlhalbrook

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    Very small movement forward (of the aircraft...

    Very small movement forward (of the aircraft empty CG-----about 0.2 inch, if I remember correctly.)

    Have crunched numbers to the point that I'm blue in the face.....have decided to move the engine...
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    CG of the engine sans prop --- you are very close...

    CG of the engine sans prop --- you are very close to spot on. It balances almost exactly between cylinders 1 and 2----actually somewhat closer to the leading edge of 1. (this includes the dizzy, oil...
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    Know what you mean.....I'm old school....don't...

    Know what you mean.....I'm old school....don't trust the plans dimensions. Dropped plumb-bobs with plane level---have centerline, datum, CL of mains and tailwheel drawn on my shop floor. (actually...
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    Steve... That's a simplification of the...

    Steve...

    That's a simplification of the formula w/W=d/D where "w" is weight to shift, "W" is total weight of aircraft, "d" is change in CG, and "D" is distance the weight is moved.

    Look at...
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    Marty---- No. Built a tower of concrete...

    Marty----

    No. Built a tower of concrete blocks--then used thin pieces of ply to shim the scale to level the plane with the tailwheel directly on the scale---no tare involved. Took 5 weights and...
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    cwilliamrose...... Plane is a...

    cwilliamrose......

    Plane is a restoration-----has about 300hrs TT. All we're doing is replacing the engine that was separated from the airframe by the previous owner (actually the guy before the...
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    Frank----Yep-----

    Frank----Yep-----
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    I'm really starting to doubt our...

    I'm really starting to doubt our weights..........I weighed the plane myself--saw the numbers on the scale--but I'm REALLLY starting to think that there is a bad apple in the numbers somewhere.

    I...
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    Help moving engine for CG....

    OK-----I need some help...

    I'm restoring a VP-1. Have it basically finished (just need to install "new" engine and prop, make cowling and take to hangar....).

    Decided to temporarily mount the...
  10. Poll: Absolutely agree!

    Absolutely agree!
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    Calendar time limit on Phase 1?

    Is there a calendar time limit on completing Phase 1 flight testing of a homebuilt? I seem to remember that there was a requirement to complete the "40 hours" within 12 months......???
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    Daughter's homework....

    Sorry.....was unable to post in format that is easily readable........it's a poem...Can go to http://www.biplaneforum.com/showthread.php?t=5790#lastpost to read in proper format....
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    Not to cause any more argument-----but who's...

    Not to cause any more argument-----but who's practical???





    Just one opinion---not that of everyone involved in Sport Aviation.

    I'm not trying to ruffle feathers anymore than they already...
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    Found this interesting----quote from the very 1st...

    Found this interesting----quote from the very 1st "Sport Aviation" magazine (well, actually, the 1st Experimenter that was published from Paul's typewriter in 1953)
    " This association has been in...
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