Recent Content by djschwartz

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  1. djschwartz
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    Headseat Microphone VOX sensitivity

    The problem with the internal "intercom" function in all of the aircraft radios is that it is not a true intercom. When the VOX circuit activates...
    Post by: djschwartz, Oct 10, 2016 in forum: Instruments / Avionics / Electrical System
  2. djschwartz
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    Why so few V-Tails?

    Another disadvantage of V tails that has not been mentioned here is trim drag. If the aircraft is balanced such that there is little load on the...
    Post by: djschwartz, Aug 18, 2016 in forum: General Experimental Aviation Questions
  3. djschwartz
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    Anyone Familiar With Rejuvenator

    A simple Google search brought up this from the manufacturer: Poly-Fiber Aircraft Coatings
    Post by: djschwartz, May 12, 2016 in forum: Finishing Techniques
  4. djschwartz
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    Current Limiter In Starter Circuit

    You have other issues to consider. If the two batteries are simply connected in parallel and one battery goes dead the other battery will attempt...
    Post by: djschwartz, Apr 1, 2016 in forum: Instruments / Avionics / Electrical System
  5. djschwartz
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    Prop tip speed in cruise vs. hp & torque. Is bigger better?

    Torque is irrelevant to such estimations. If you assume all other factors, aircraft weight, drag coefficient, propellor efficiency, are...
    Post by: djschwartz, Mar 3, 2016 in forum: Firewall Forward / Props / Fuel system
  6. djschwartz
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    Prop tip speed in cruise vs. hp & torque. Is bigger better?

    The helix angle at any given point on the propellor blade is the arc tangent of the forward speed of the aircraft divided by the angular velocity...
    Post by: djschwartz, Mar 2, 2016 in forum: Firewall Forward / Props / Fuel system
  7. djschwartz
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    VG stall angle improvement

    I've actually not seen Bud fly the Yak. I have other aerobatic friends who have tried VGs with mixed results. This is not because VGs are bad in...
    Post by: djschwartz, Dec 9, 2015 in forum: Aircraft Design / Aerodynamics / New Technology
  8. djschwartz
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    VG stall angle improvement

    Often a quick search can turn up some real information. For example, a Google search on "airfoil polars with vortex generators" turned up this...
    Post by: djschwartz, Dec 9, 2015 in forum: Aircraft Design / Aerodynamics / New Technology
  9. djschwartz
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    Dyn'Aero in trouble?

    Having been around the homebuilt scene for 40 years now it's pretty easy to understand what is going on. Van's planes and his company do what...
    Post by: djschwartz, Dec 1, 2015 in forum: Hangar Flying
  10. djschwartz
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    Bush plane, mabe?

    +1 on the stay in school and do well there, that's a good start for life in general. As for aviation, join the Experimental Aircraft Association....
    Post by: djschwartz, Oct 15, 2015 in forum: Bush / Float flying
  11. djschwartz
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    Being practical with the homebuilt.vs. certified decision

    An IA pays for a subscription to the ADs. Any reputable IA should be able to look up all the ADs and service bulletins for you aircraft. That's a...
    Post by: djschwartz, Sep 19, 2015 in forum: General Experimental Aviation Questions
  12. djschwartz
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    Firewall! SS or Titanium?

    There is no advantage to titanium other than weight. Thin titanium sheet can be sheared and punched with the same light duty tools you would use...
    Post by: djschwartz, Sep 19, 2015 in forum: Sheet Metal
  13. djschwartz
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    Carb Ice on Corvair Conversions

    If your carb or throttle body is mounted directly to the cylinder head as with the original ones in the car you are unlikely to have any icing...
    Post by: djschwartz, Sep 14, 2015 in forum: Corvair
  14. djschwartz
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    Marvel Schebler Carbs

    The model numbers have to do with several things, among which is the main jet size. The only way you'll figure out which one might work on a...
    Post by: djschwartz, Sep 14, 2015 in forum: Firewall Forward / Props / Fuel system
  15. djschwartz
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    Interest in a magazine or site focused on affordable flying?

    If it actually had real, verified, and useful information, not just a bunch of whining about high cost, "vapor ware" wishful thinking, rumors, and...
    Post by: djschwartz, Aug 13, 2015 in forum: Hangar Flying
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