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Bomb Bay doors.

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Old 08-09-2007, 10:55 PM
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DavidAgar
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Default Bomb Bay doors.

I am building an Ugly Stick and I want to install a bomb bay on it for candy drop's. For the life of me I cannot figure out how to make the doors open and close. Any help would be appreciated. Thanks Dave
Old 08-10-2007, 08:00 AM
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Flying freak
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Default RE: Bomb Bay doors.

I know my drawing really sucks but this is how i would do it.

Its basically a simple box with a servo mounted on the bottom of it, it has a simple peace of that umm flexible push rod stuff (i think its called nycrod?) the red dot is a simple hing that holds the bottom on the push rod is in the middle of the box while this does obstruct it a little bit it shouldnt matter much

just one warning make sure that when its done the box is mounted so that it opens towards the wingtips this way the servos doestn have to try and puch an air brake through the air
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Old 08-10-2007, 08:01 AM
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Flying freak
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Default RE: Bomb Bay doors.

oops i put the pic on there twice.....
Old 08-10-2007, 01:50 PM
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VFR_RC
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Default RE: Bomb Bay doors.

there was a us aircore plane back in the 90s that came with it. i'll try to remember the mechanism. it was fairly simple.

Do you need one or two doors?
Old 08-10-2007, 03:16 PM
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DavidAgar
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Default RE: Bomb Bay doors.

I am wanting 2 doors. Thanks Dave
Old 08-10-2007, 05:23 PM
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red head
 
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Default RE: Bomb Bay doors.

Now you are getting FUSSY !!! ENJOY !!! RED
Old 08-10-2007, 07:10 PM
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da Rock
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Default RE: Bomb Bay doors.

A door isn't anything different than a landing flap on a wing. Except it isn't on the wing, it closes a box. You hinge a flap and drive it with a servo. In this case, the flap is a bombay door.
Old 08-10-2007, 07:14 PM
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da Rock
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Default RE: Bomb Bay doors.

To do any good, there has to be a fair amount of candy. So you need a big box.

Spring load the door(s) and have the servo release the door latch. That way the servo doesn't experience any load. It doesn't have to hold the doors closed or force them open. Triggers are useful things.
Old 08-12-2007, 08:48 PM
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red head
 
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Default RE: Bomb Bay doors.

One of mine uses a cable latch release to open the door, the weight of the candy actually opens it when the latch is released. The door also has a small magnet in it to hold the door closed after the candy is dropped. The door swings down and forward so the wind will tend to close the door. I usually do a Victory roll after the drop and that lets the door close by itself. ENJOY !!! RED
Old 08-13-2007, 08:33 AM
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Default RE: Bomb Bay doors.

I just cut a couple doors in the belly of my F22. I didn't think about the latch, I used an old set of mechanical retracts and a retract servo.

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