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Thread: Alex's Single Prop FPV

  1. #1
    Navigator andregt6's Avatar
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    Alex's Single Prop FPV

    Alex running over your details you sent me about your single prop / twin planes.

    Questions:

    #1. When you say 32" on the fuselage is that the foam body or prop tip to elevator end? Making the actual body smaller then 32" (If that make sense.)

    #2. Any reason for me to not to upscale the tractor style to a 48" wing and 40" fuselage? (40" based off the notes/ratio for the 48" wing)

    For my first FPV plane I want to keep it simple and not worry about a pusher setup.
    Plus a 48" wings fit into the trunk of my car very nicely.

    Thoughts.

    Thanks.

  2. #2
    Engineer for Jesus Christ IBCrazy's Avatar
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    I believe you are referring to my Fenix 80 airplane? If so, there is a scaled up version of the same size: Fenix 120 and Fenix 150.

    Generally most planes scale well. Larger simply means they respond more sluggishly in most cases.

    As for prop position, it really doesn't change the level of complexity. It just affects how the plane feels. I really like tractor props because they feel like I'm inside an airplane.

    -Alex
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  3. #3
    Navigator andregt6's Avatar
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    Thank you Alex.

    Yes was referring to the ones shown in your videos.

    Why the twin rudder?

  4. #4
    Engineer for Jesus Christ IBCrazy's Avatar
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    Quote Originally Posted by andregt6 View Post
    Thank you Alex.

    Yes was referring to the ones shown in your videos.

    Why the twin rudder?
    The real reason: because it looks cool to me.

    The honorable reason: it aids in minimizing the potential for a flat spin.

    ^That reason is technically true, but it really is irrelevant because it barely helps at all.
    -Alex
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  5. #5
    Navigator andregt6's Avatar
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    That is great

    I've got one plane which has a really annoying tip stall issue.

  6. #6
    Navigator andregt6's Avatar
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    Just to confirm this is the plane I'm interested in.


    Click image for larger version. 

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    I like the size and the fact you can spread the systems out to avoid interference.

    Thanks.

  7. #7
    Navigator andregt6's Avatar
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    iBcrazy Raven EPP?

  8. #8
    Engineer for Jesus Christ IBCrazy's Avatar
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    That's my Raven before I chopped 4" off of the tail as it was entirely too reactive. It has the same wing as the Specter but less than half the drag. It glides much better and is faster than a Specter also. The other nice thing is that is doesn't tip stall.

    The problem is that the configuration has a much higher stall speed than the Specter as it is a little heavier. It also is not as good at shooting gaps as it is just too fast and when it stalls, although it won't tip, you can't steer either. It's a fun plane. it just hasn't seen much air-time lately as I have been having a blast with my 32" Wraith micro.

    -Alex
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  9. #9
    Engineer for Jesus Christ IBCrazy's Avatar
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    If you want a Raven I can cut one out for you. The fuselage and everything will be rough cut, but I can CNC cut the wings (Mine were hand-cut as this was before my CNC foam cutter).

    The one thing I would like to do to the plane is make the rudder steerable. This would aid in the steering as it tends to pitch the nose in a turn.

    -Alex
    If it is broken, fix it. if it isn't broken, I'll soon fix that.

    videoaerialsystems.com - Performance video piloting

  10. #10
    Navigator andregt6's Avatar
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    Thank very much for the offer Alex but I'm willing to bet the shipping to Canada would be very costly due to the package size. (I'll drop you an email later today so we can check on that)

    For now FPV bird #1 will be a simple tractor setup.
    Specially with the winter conditions I deal with and gives me time to learn/get the feel of FPV flying.

    My air field does not have many gaps to shoot so I'll be doing more terrain skimming/pop ups.

    Also suspect I'll need some snow shoes handy

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