Action v: Screw and wingnut

trdd
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Action v: Screw and wingnut

Post by trdd » September 5th, 2019, 4:55 am

Action v:
Rotate a screw to move a wingnut threaded on the screw at least 2 horizontal cm. After moving at least 2 horizontal cm the wingnut must contact and object which initiates the next action.

Use this post to comment on this task.

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Re: Action v: Screw and wingnut

Post by trdd » September 5th, 2019, 5:16 am

Similar to last year's Division C but with more specific definition on the screw and the nut.

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Re: Action v: Screw and wingnut

Post by LittleMissNyan » September 13th, 2019, 1:52 pm

Would this task be applicable for a timer, or does it have to be something else?
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Re: Action v: Screw and wingnut

Post by AwesomeSauceis1 » September 13th, 2019, 5:43 pm

LittleMissNyan wrote:
September 13th, 2019, 1:52 pm
Would this task be applicable for a timer, or does it have to be something else?

Based on last year's Div. C rules, a timer can be a scorable or non-scorable action, so yes.
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Re: Action v: Screw and wingnut

Post by builder83 » September 15th, 2019, 1:17 pm

LittleMissNyan wrote:
September 13th, 2019, 1:52 pm
Would this task be applicable for a timer, or does it have to be something else?
With no motor, how much time do you think you can get out of this? I cannot imagine more than 10 seconds.

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Re: Action v: Screw and wingnut

Post by sciolyperson1 » September 15th, 2019, 2:54 pm

builder83 wrote:
September 15th, 2019, 1:17 pm
LittleMissNyan wrote:
September 13th, 2019, 1:52 pm
Would this task be applicable for a timer, or does it have to be something else?
With no motor, how much time do you think you can get out of this? I cannot imagine more than 10 seconds.

Is there a rule stopping people from using a normal sand timer of some sort?
When buying screws, buy one with a small number of threads per inch, and as large of a diameter as you can, to minimize the amount of energy needed to rotate the screw.
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Re: Action v: Screw and wingnut

Post by GPRSTEM » November 2nd, 2019, 3:58 pm

I don't understand this rule clarification --> https://www.soinc.org/mission-possible

(Section: 3 / Paragraph: c / Sub-Paragraph: v / Line: 1)
10/29/2019
CAN THE WINGNUT HAVE ROTATIONAL MOTION (I.E. THE WINGNUT ROTATES WITH THE ROTATING SCREW) OR MUST IT ONLY HAVE LINEAR MOTION (I.E. THE ROTATING SCREW ONLY PUSHES THE WINGNUT ALONG ITS THREADS)?
The wing nut needs to move linearly. The threaded wing nut must move along a threaded rod or screw.

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Re: Action v: Screw and wingnut

Post by LittleMissNyan » November 3rd, 2019, 7:14 am

GPRSTEM wrote:
November 2nd, 2019, 3:58 pm
I don't understand this rule clarification --> https://www.soinc.org/mission-possible

(Section: 3 / Paragraph: c / Sub-Paragraph: v / Line: 1)
10/29/2019
CAN THE WINGNUT HAVE ROTATIONAL MOTION (I.E. THE WINGNUT ROTATES WITH THE ROTATING SCREW) OR MUST IT ONLY HAVE LINEAR MOTION (I.E. THE ROTATING SCREW ONLY PUSHES THE WINGNUT ALONG ITS THREADS)?
The wing nut needs to move linearly. The threaded wing nut must move along a threaded rod or screw.
Linear = moving left or right on the threaded rod
Rotational = spinning around on the rod
See here you need another rod to make the wing nut move linearly, instead of spinning around and around on the rod.
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Re: Action v: Screw and wingnut

Post by GPRSTEM » November 3rd, 2019, 8:05 am

But the rule says that the wingnut has to be threaded on the rotating screw and the wingnut has to move 2cm horizontal distance. The rule clarification and the rule seem to be different.

How can a wingnut be threaded on a rotating screw and move only linearly. I can understand the concept behind introducing another object but it seems too complex for division b.

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Re: Action v: Screw and wingnut

Post by LittleMissNyan » November 3rd, 2019, 8:07 am

GPRSTEM wrote:
November 3rd, 2019, 8:05 am
But the rule says that the wingnut has to be threaded on the rotating screw and the wingnut has to move 2cm horizontal distance. The rule clarification and the rule seem to be different.

How can a wingnut be threaded on a rotating screw and move only linearly. I can understand the concept behind introducing another object but it seems too complex for division b.
Actually, the wingnut system was how each team's Battery Buggy (a Div B event from last year) stopped. The wingnut will move linearly because the other rod/surface bumping up against a wing of the wingnut will prevent it from spinning around, so it's forced to move along the rod, therefore linearly. The link I posted has a diagram of this.
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