Cap Flipper One Side Floppy


#1

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.
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#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

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

Use a high strength axle.


#6

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


#7

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?


#8

What other way is there?


#9

@Embot I mean that it is better for the shaft to have 2 supports.
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#10

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.


#11

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?


#12

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.


#13

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

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.


#14

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.