DBVZ

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About DBVZ

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DBVZ's Activity

  1. DBVZ added a post in a topic To Chute or not to Chute ?   

    I have an Avid, that had the BRS in it when I bought it. Mostly, if I have trouble in flight I plan to land ASAP. In-flight structural failure is very unlikely unless you hit something, but if you did it may save you. The other possible application is for flight over areas without any landing space even for a plane like an Avid or Kitfox that can land almost anywhere. Again, unlikely. I do not plan to take it out. The weight penalty is minor, and I can still fly 2 big adults with full fuel. My wife likes the fact the plane has it, and that is worth something.
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  2. DBVZ added a post in a topic Where to buy Speedwing 18 gal tank?   

    Thanks for that offer. I had considered making a tank, but have no experience with that kind of fabrication, to assure proper shape and no leaks. If a tank does not become available ready-made, I may get back to you.
    My interest is in a high endurance capability when solo. Easy to deal with bladder capacity that way.
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  3. DBVZ added a post in a topic Speedwing 18 gal tank?   

    Not available from Airdale. Anyone with a 2-tank kit that is not going to use both, or changing from Speedwing to STOL or HH wings? Thanks.
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  4. DBVZ added a post in a topic Where to buy Speedwing 18 gal tank?   

    Not available from Airdale. Anyone with a 2-tank kit that is not going to use both, or changing from Speedwing to STOL or HH wings? Thanks.
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  5. DBVZ added a post in a topic Where to buy Speedwing 18 gal tank?   

    I expect the Avid Speedwing may be about the most extreme situation, with a single 18 gal tank in a wing that is quite short.
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  6. DBVZ added a post in a topic Where to buy Speedwing 18 gal tank?   

    This inquiry is about availability, to add a second tank to an Speedwing with only a right tank that I am interested in buying. I have not flown it yet. I expect some right banking with a full right tank, but solo you balance it a little. Someone who is flying a single tank Speedwing can give a better answer.
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  7. DBVZ added a topic in Avid Model IV   

    Speedwing 18 gal tank?
    Not sure where to post this. I am looking for where to get a left side 18 gal tank for Avid Speedwing. Any help appreciated. Thanks.
    • 1 reply
    • 2,700 views
  8. DBVZ added a topic in For Sale and wanted, you got it, I want it   

    Where to buy Speedwing 18 gal tank?
    I am looking for a left side 18 gal speedwing tank. Any help finding one would be appreciated. Alcohol resistant preferred. Thanks.
    • 8 replies
    • 2,340 views
  9. DBVZ added a post in a topic G loading for MkIV Flyer   

    Very interesting. Thanks. That will make it easier to do what I think I want to do. I was not worried about the structure of the speedwing, just the process to keep it "legal". If no process is needed, beyond what I think I need to determine it will fly safely, that works for me.
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  10. DBVZ added a post in a topic G loading for MkIV Flyer   

    Yes. Very serious. I would still like to see information on the G-laod for the other wings, and some information on issues with increased loading. I have seen a Mk IV STOL with a max gross listed as 1320, but the flight testing seems to have all been done at 1070. If the engineering results in a +6/-3 for the Speedwing, then it seems like added weight is not an issue for the wing structure. Ihe issue would be performance, stall speed, climb rate, ceiling... If that is right, it seems like a change of gross weight to something a little higher ought to be approved if you do some flight testing (as a major alteration) at the higher weight to determine the performance is all acceptable. Again, am I missing something here? Why would this work/not work?
    Another post on this issue said simply, you have no weight limit on an EXP. The implication is that the statement in the operating limitations requires the flight test information to be recorded in the log book, but that is not a weight limit. The W/B done when you submit your program letter signed by the DAR is just the first W/B and you are free to make a new one anytime. The data plate on the tail has a spot for gross weight, but builders are told to leave it blank by EAA. You are free to load as much as you want, and "experiment". That just did not seem right to me. Another post, on another forum, said a weight change proposal is handled just like any other major alteration, with some flight testing in a test area.

    Has anyone proposed a weight increase after phase 2 testing? And what was the process you were required to follow? And was it approved? Thanks.
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  11. DBVZ added a post in a topic G loading for MkIV Flyer   

    Help me understand the G-loading question. In looking for load ratings for the different wings used on the Mk IV, I think I have this right:

    Gross Weight G-load Wing Span

    Speedwing: 1050 +6/-3 23' 11.5"

    Heavy Hauler: 1150 +4.4/-2.2 29' 10.5"


    My question is, if the Speedwing is +6/-3 at 1050, how does that change with increased weight? My simple calculation is 6 X 1050 = 6300 pounds loading. 6300/4.4 = 1432. So why not set the max gross at 1432? Or set it at 1320, and have a G-load of 4.77? If someone can direct me to authoritative load ratings for the other wings, I would appreciate it. Thanks.
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  12. DBVZ added a topic in Avidfoxflyers General Hangar   

    Changing the gross weight with the FAA...
    Is it possible to change the weight when you change the wings, for a non-builder owner? The different wings allow higher weights when building, but how do you do it later as a non-builder owner? And if the builder can set the max gross even higher than the kit MFG suggests for a particular wing, what can a non-builder owner do if he makes a "major modification" and submits the resulting new W/B to the FSDO?
    • 1 reply
    • 412 views
  13. DBVZ added a topic in Avidfoxflyers General Hangar   

    Flying with a "Glass Panel" only?
    I looked at a plane where the owner replaced most of the steam gauges with an Integra 6624 and Avmap GPS. If those are lost due to a power loss or lightning strike, the only flight instrument is a compass. No air speed, altimeter, VSI, turn and bank, or gyro's - just compass. So what do you think?

    I have always liked having some redundant instruments, and while this is a VFR aircraft if you happen to get into IMC with just a compass it seems like survival gets pretty unlikely. In IFR aircraft you usually have electric, air pressure, and vac powered instruments so no single failure will leave you flying blind.

    With the current state of aviation electronics, that have both panel power and an internal battery, would you fly a VFR aircraft with a glass panel that is not just primary, but is the only source of flight information other than mag heading? The Integra and Avmap provide a nice display of more than enough flight information, as long as they keep working.
    • 4 replies
    • 467 views