String Unraveling?
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String Unraveling?
When I wrap the string around the axle, the string unravels before I can set it off. How can I fix this?
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Re: String Unraveling?
Are you setting the traps after you wind it? If so, are you letting the string unwrap slowly while you're holding the axle? Doing that will allow the flex of the rod to dissipate, which should help keep the string from unwinding. I also found that setting the car on the ground before you let go of the axle will allow you to keep more of the string wrapped around the axle. You could also allow the car to roll forward a bit while you're holding it to undo that little bit. As long as it remains in front of you, you don't roll it very far, and you're holding it, I see no reason that this would violate the rule about rolling the vehicle on the track. I'm assuming that you're wrapping your axle before you set the traps. If not, that helps keep the string tight.
Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.I have not read the rules for this year, but I don't think they'll've done anything that makes the above illegal.
Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.I have not read the rules for this year, but I don't think they'll've done anything that makes the above illegal.
John 5:46-47
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Colorado School of Mines
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Re: String Unraveling?
Yeah, I am setting the traps after I wind it. So is there no way to get rid of this problem completely?Things2do wrote: ↑Tue Dec 10, 2019 2:17 pm Are you setting the traps after you wind it? If so, are you letting the string unwrap slowly while you're holding the axle? Doing that will allow the flex of the rod to dissipate, which should help keep the string from unwinding. I also found that setting the car on the ground before you let go of the axle will allow you to keep more of the string wrapped around the axle. You could also allow the car to roll forward a bit while you're holding it to undo that little bit. As long as it remains in front of you, you don't roll it very far, and you're holding it, I see no reason that this would violate the rule about rolling the vehicle on the track. I'm assuming that you're wrapping your axle before you set the traps. If not, that helps keep the string tight.
Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.I have not read the rules for this year, but I don't think they'll've done anything that makes the above illegal.
“Life is short.
Smile while you still have teeth.”
― Mallory Hopkins
Smile while you still have teeth.”
― Mallory Hopkins
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Re: String Unraveling?
Assuming that I understood what you were saying, the only way to abolish it is to have a rod that won't bend at all. However, with practice and adjustments, it won't affect your runs.GurtYo wrote: ↑Tue Dec 10, 2019 5:04 pmYeah, I am setting the traps after I wind it. So is there no way to get rid of this problem completely?Things2do wrote: ↑Tue Dec 10, 2019 2:17 pm Are you setting the traps after you wind it? If so, are you letting the string unwrap slowly while you're holding the axle? Doing that will allow the flex of the rod to dissipate, which should help keep the string from unwinding. I also found that setting the car on the ground before you let go of the axle will allow you to keep more of the string wrapped around the axle. You could also allow the car to roll forward a bit while you're holding it to undo that little bit. As long as it remains in front of you, you don't roll it very far, and you're holding it, I see no reason that this would violate the rule about rolling the vehicle on the track. I'm assuming that you're wrapping your axle before you set the traps. If not, that helps keep the string tight.
Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.I have not read the rules for this year, but I don't think they'll've done anything that makes the above illegal.
John 5:46-47
Eagle Scout
Colorado School of Mines
Let's go, Brandon!
Eagle Scout
Colorado School of Mines
Let's go, Brandon!
See Wiki
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Re: String Unraveling?
I wouldn't say that's the only way to solve it. Last year, I had this issue, and it was really affecting our runs, so instead of starting our mousetraps with the built-in trigger, we made a lock on the axle that could be released with a pencil (this was legal under last year's rules - not sure if it still is this year).
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virginia tech '24
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Re: String Unraveling?
That's a really good idea! I'll double check with the rules and try it out. Thank you to everyone who replied!dragonfruit35 wrote: ↑Thu Dec 19, 2019 6:23 am I wouldn't say that's the only way to solve it. Last year, I had this issue, and it was really affecting our runs, so instead of starting our mousetraps with the built-in trigger, we made a lock on the axle that could be released with a pencil (this was legal under last year's rules - not sure if it still is this year).
“Life is short.
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Re: String Unraveling?
Curious about the lock on the axle? How was this done basically? I think it is okay from what I am reading in the rules.