States

OhioRockstar
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Re: States

Postby OhioRockstar » March 26th, 2019, 11:34 am

sciolyperson1 wrote:
OhioRockstar wrote:We got 1st at States but it was close. We had a 12 cm gate. We had a time of 1.9 and got 0.3 cm from point. So thats a score of -46.5


Ohio states didn't happen yet.



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Re: States

Postby invisiblebanana » March 26th, 2019, 12:38 pm

shrewdPanther46 wrote:
sciolyperson1 wrote:
MattChina wrote:They either have a godly buggy or they got reallly lucky. Idk, maybe its a troll


Its bs lol
1.9 seconds is faster than my run at nats (2.086, fastest run at nats last year)

while it is bs its probably possible even with dc motors


I mean, you can buy a 3000 rpm dc motor, and use an absurdly high gear ratio and make it have less than a 1 second speed.

Although most people don't do that since it lowers the accuracy by a lot.
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shrewdPanther46
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Re: States

Postby shrewdPanther46 » March 26th, 2019, 1:17 pm

invisiblebanana wrote:
shrewdPanther46 wrote:
sciolyperson1 wrote:
Its bs lol
1.9 seconds is faster than my run at nats (2.086, fastest run at nats last year)

while it is bs its probably possible even with dc motors


I mean, you can buy a 3000 rpm dc motor, and use an absurdly high gear ratio and make it have less than a 1 second speed.

Although most people don't do that since it lowers the accuracy by a lot.

ever heard of torque?

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Re: States

Postby OhioRockstar » March 26th, 2019, 6:56 pm

shrewdPanther46 wrote:
invisiblebanana wrote:
shrewdPanther46 wrote:while it is bs its probably possible even with dc motors


I mean, you can buy a 3000 rpm dc motor, and use an absurdly high gear ratio and make it have less than a 1 second speed.

Although most people don't do that since it lowers the accuracy by a lot.

ever heard of torque?


yeah, you probably would have to make the buggy super light, like literally balsa chasis

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Re: States

Postby windu34 » March 27th, 2019, 6:46 pm

OhioRockstar wrote:
shrewdPanther46 wrote:
invisiblebanana wrote:
I mean, you can buy a 3000 rpm dc motor, and use an absurdly high gear ratio and make it have less than a 1 second speed.

Although most people don't do that since it lowers the accuracy by a lot.

ever heard of torque?


yeah, you probably would have to make the buggy super light, like literally balsa chasis

<1.9 s is definitely possible, and not necessarily at the loss of accuracy. The national EV champion in 2016 had 1.6 seconds with perfect accuracy and was not the fastest device at the tournament. Although they used brushless motors, I think 1.9 is possible with brushed. That said, I agree its unlikely.
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Re: States

Postby MadCow2357 » March 31st, 2019, 11:46 am

1st at RI State Competition :D :D

Caliper acted up again :roll: (pro tip don't ever use a harbor freight caliper :evil: ), steering was way off. The buggy traveled in a straight line, but it was angled for a nice bonus, so it hit the wall... both runs... my caliper setting was right, but it just didn't work idk why...

Anyways 1st run when it bounced off the wall somehow it ended up 18 cm from the point, and 2nd run was 26 cm off. Definitely could have been better with two regular runs, but still got the dub lol.
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Re: States

Postby drcubbin » March 31st, 2019, 11:54 am

MadCow2357 wrote:1st at RI State Competition :D :D

Caliper acted up again :roll: (pro tip don't ever use a harbor freight caliper :evil: ), steering was way off. The buggy traveled in a straight line, but it was angled for a nice bonus, so it hit the wall... both runs... my caliper setting was right, but it just didn't work idk why...

Anyways 1st run when it bounced off the wall somehow it ended up 18 cm from the point, and 2nd run was 26 cm off. Definitely could have been better with two regular runs, but still got the dub lol.

Wow! With that kind of luck, I would definitely buy a PowerBall ticket tonight! Congratulations and thanks for the word on the Harbor Freight caliper. We were thinking about switching to caliper steering over what we are using, but too much involved and not enough time to gather accurate data before 4/6 this weekend.

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Re: States

Postby sciolyperson1 » March 31st, 2019, 3:31 pm

drcubbin wrote:
MadCow2357 wrote:1st at RI State Competition :D :D

Caliper acted up again :roll: (pro tip don't ever use a harbor freight caliper :evil: ), steering was way off. The buggy traveled in a straight line, but it was angled for a nice bonus, so it hit the wall... both runs... my caliper setting was right, but it just didn't work idk why...

Anyways 1st run when it bounced off the wall somehow it ended up 18 cm from the point, and 2nd run was 26 cm off. Definitely could have been better with two regular runs, but still got the dub lol.

Wow! With that kind of luck, I would definitely buy a PowerBall ticket tonight! Congratulations and thanks for the word on the Harbor Freight caliper. We were thinking about switching to caliper steering over what we are using, but too much involved and not enough time to gather accurate data before 4/6 this weekend.


Congrats!!
What part of the caliper acted up? Just curious.
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Re: States

Postby MadCow2357 » March 31st, 2019, 8:28 pm

sciolyperson1 wrote:Congrats!!
What part of the caliper acted up? Just curious.

Thanks! I used this caliper:
https://www.harborfreight.com/6-in-dial ... 63730.html
So every rotation of the dial is supposed to be 1/10 of an inch, iirc, but that's clearly not happening according to the scale intervals on the caliper itself. For example when it is measuring 1.56 inches, the dial might read 1.59 or 1.51. Actually it's way worse than that, but it's just hard to explain how bad it is. I was showing the local high schoolers how caliper steering worked, and doing that could have messed up the readings? Doesn't make sense lol. Also the "durable plastic case" has split in half...
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Re: States

Postby sciolyperson1 » March 31st, 2019, 8:34 pm

MadCow2357 wrote:
sciolyperson1 wrote:Congrats!!
What part of the caliper acted up? Just curious.

Thanks! I used this caliper:
https://www.harborfreight.com/6-in-dial ... 63730.html
So every rotation of the dial is supposed to be 1/10 of an inch, iirc, but that's clearly not happening according to the scale intervals on the caliper itself. For example when it is measuring 1.56 inches, the dial might read 1.59 or 1.51. Actually it's way worse than that, but it's just hard to explain how bad it is. I was showing the local high schoolers how caliper steering worked, and doing that could have messed up the readings? Doesn't make sense lol. Also the "durable plastic case" has split in half...


I don't think calipers would be usually inaccurate, I'd think it's just wear overtime. Considering the stopping of the car puts a lot of stress on the tooths of the caliper, it wouldn't surprise me if a few wore down or broke.
Are the teeth plastic or metal?
HSN '22

Roller Coaster National Champion '19
Team (Nats) - 3rd '18, '19
Mystery - 3rd '19
Buggy - 4th '19, 5th '18
Mission - 3rd '17


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'18: Buggy - Towers - WIDI
'19: Buggy - Roller - Mystery - Boomi
'20: Gravity - Boomi - PPP - Detector? - Wright? - WIDI?

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Re: States

Postby Crimesolver » March 31st, 2019, 8:45 pm

MadCow2357 wrote:1st at RI State Competition :D :D

Caliper acted up again :roll: (pro tip don't ever use a harbor freight caliper :evil: ), steering was way off. The buggy traveled in a straight line, but it was angled for a nice bonus, so it hit the wall... both runs... my caliper setting was right, but it just didn't work idk why...

Anyways 1st run when it bounced off the wall somehow it ended up 18 cm from the point, and 2nd run was 26 cm off. Definitely could have been better with two regular runs, but still got the dub lol.

wish i had that kind of doing-really-well-even-though-i-messed-up luck. Was this done in a narrow hall?
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Re: States

Postby MadCow2357 » March 31st, 2019, 8:56 pm

Crimesolver wrote:
MadCow2357 wrote:1st at RI State Competition :D :D

Caliper acted up again :roll: (pro tip don't ever use a harbor freight caliper :evil: ), steering was way off. The buggy traveled in a straight line, but it was angled for a nice bonus, so it hit the wall... both runs... my caliper setting was right, but it just didn't work idk why...

Anyways 1st run when it bounced off the wall somehow it ended up 18 cm from the point, and 2nd run was 26 cm off. Definitely could have been better with two regular runs, but still got the dub lol.

wish i had that kind of doing-really-well-even-though-i-messed-up luck. Was this done in a narrow hall?

Yes, it was a narrow hall.
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Re: States

Postby MadCow2357 » March 31st, 2019, 8:59 pm

sciolyperson1 wrote:
MadCow2357 wrote:
sciolyperson1 wrote:Congrats!!
What part of the caliper acted up? Just curious.

Thanks! I used this caliper:
https://www.harborfreight.com/6-in-dial ... 63730.html
So every rotation of the dial is supposed to be 1/10 of an inch, iirc, but that's clearly not happening according to the scale intervals on the caliper itself. For example when it is measuring 1.56 inches, the dial might read 1.59 or 1.51. Actually it's way worse than that, but it's just hard to explain how bad it is. I was showing the local high schoolers how caliper steering worked, and doing that could have messed up the readings? Doesn't make sense lol. Also the "durable plastic case" has split in half...


I don't think calipers would be usually inaccurate, I'd think it's just wear overtime. Considering the stopping of the car puts a lot of stress on the tooths of the caliper, it wouldn't surprise me if a few wore down or broke.
Are the teeth plastic or metal?

Not completely sure about the material of the teeth (metal I think), but I assure you the caliper is really really bad - I can show you in person at nationals if you would like. In retrospect, it probably had something to do with cutting off too many parts off of the caliper with an angle grinder and because the high school teacher "took it apart for research purposes". But no worries, I have attained a much better caliper for my nationals buggy. :D
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Re: States

Postby builder83 » March 31st, 2019, 9:28 pm

MadCow2357 wrote:1st at RI State Competition :D :D

Caliper acted up again :roll: (pro tip don't ever use a harbor freight caliper :evil: ), steering was way off. The buggy traveled in a straight line, but it was angled for a nice bonus, so it hit the wall... both runs... my caliper setting was right, but it just didn't work idk why...

Anyways 1st run when it bounced off the wall somehow it ended up 18 cm from the point, and 2nd run was 26 cm off. Definitely could have been better with two regular runs, but still got the dub lol.


Nicely done! Crazy they had it set up in such a narrow place. So you didnt even need any bonus to win state? (Assuming no bonus as it hit the wall). You going to nationals?

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Re: States

Postby MadCow2357 » April 1st, 2019, 4:09 am

builder83 wrote:
MadCow2357 wrote:1st at RI State Competition :D :D

Caliper acted up again :roll: (pro tip don't ever use a harbor freight caliper :evil: ), steering was way off. The buggy traveled in a straight line, but it was angled for a nice bonus, so it hit the wall... both runs... my caliper setting was right, but it just didn't work idk why...

Anyways 1st run when it bounced off the wall somehow it ended up 18 cm from the point, and 2nd run was 26 cm off. Definitely could have been better with two regular runs, but still got the dub lol.


Nicely done! Crazy they had it set up in such a narrow place. So you didnt even need any bonus to win state? (Assuming no bonus as it hit the wall). You going to nationals?

Nope! No bonus, and first what can I say?

And yes, going to nationals!
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