Cap Flipper One Side Floppy

  1. 2 weeks ago

    Hi vex forum. Our team is trying to make a so called “pancake flipper” for the caps. One c channel is attached to the motor, and the other is not. The side that is not flops and doesn’t carry the weight of the cap.

  2. I'm not sure I understand the problem completely. Can you not add cross-beams to help stabilize it? That is the best way to fix any "floppy" mechanisms, if possible.

  3. Cam

    Dec 31 Ga Us ?
    Edited 2 weeks ago by Cam

    1 Are you using bearings? 2 use more than one connection point for the gear. 3 have supports on the outside of the gears.

  4. I think an issue might be that the axle is torquing slightly through the middle. I would not suggest using that kind of long axle as the only means to turn the other side. Cross bracing would help, if all possible.

  5. Deleted 2 weeks ago by Cam
  6. Cam

    Dec 31 Ga Us ?

    Use a high strength axle.

  7. @Got a Screw Loose I'm not sure I understand the problem completely. Can you not add cross-beams to help stabilize it? That is the best way to fix any "floppy" mechanisms, if possible.

    That’s the thing. We can’t add cross beams because the cap needs to be able to slide through.

  8. @Cam 1 Are you using bearings? 2 use more than one connection point for the gear. 3 have supports on the outside of the gears.

    The block bearings? yes to those. Not exactly sure what you mean by having more than one connection point but 2 screws come off the gear to attach to the c channel so it will rotate. How can we have supports outside the gears?

  9. @Got a Screw Loose I think an issue might be that the axle is torquing slightly through the middle. I would not suggest using that kind of long axle as the only means to turn the other side. Cross bracing would help, if all possible.

    What other way is there?

  10. Cam

    Dec 31 Ga Us ?

    @Embot I mean that it is better for the shaft to have 2 supports.

  11. @Embot What other way is there?

    Well, using cross bracing or moving the motor to power across both sides.

    But Cam is probably right about a high strength axle. Probably the easiest.

  12. callen

    Dec 31 Braintree, MA, USA

    Why not use a larger gear on the other side, too? It would handle the torque better. Also, why aren't any spacers visible between the gears and the c-channels?

  13. @callen Why not use a larger gear on the other side, too? It would handle the torque better. Also, why aren't any spacers visible between the gears and the c-channels?

    We aren’t using a bigger gear because it gets stuck on a piece of our oift while it goes up. We have a couple small spacers.

  14. callen

    Jan 1 Braintree, MA, USA

    @Embot We aren’t using a bigger gear because it gets stuck on a piece of our oift while it goes up.

    That makes sense. You might still consider using them and trimming a little bit if they just get stuck in one spot.

    @Embot We have a couple small spacers.

    I'm pretty sure I can see threaded steel (screws lacking spacers) in some spots between the gears and the c-channel. The screws will hold it together better if there is a good connection there, otherwise they're just loose or using some unwanted distortion to become tight.

  15. Xenon

    Jan 1 Long Beach, California 99999V

    the issue is that your shaft is having to hold a lot of weight and transfer a lot of energy. you really don't what this. a high strength shaft would probably fix this, but better would be to put bracing between both c-channel.

 

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