Gravity Vehicle C

Locked
sciolyperson1
Exalted Member
Exalted Member
Posts: 823
Joined: April 23rd, 2018, 7:13 pm
Division: C
State: NJ
Pronouns: He/Him/His
Location: WW-P HSN
Has thanked: 149 times
Been thanked: 262 times

Re: Gravity Vehicle C

Post by sciolyperson1 » January 9th, 2020, 9:44 am

MadCow2357 wrote:
January 9th, 2020, 6:54 am
Crimesolver wrote:
January 8th, 2020, 12:02 pm
does anyone have any ideas of reducing skidding once the car stops? The has been recently skidding at the very end of my runs, and I would like to know how to solve this problem other than moving the ramp around.
Is your test surface clean? You probably already do this, but if not it's a good idea to start swiffering the track before runs. Trying to brake efficiently without skidding is very hard when your wheels are on a dusty surface. Pretty sure these effects will be magnified this year as well because of how heavy the vehicles are this year.
Alternatively just don't add weight
WW-P HSN '22, Community '18
'21: Gravity - Boomi - WICI - PPP - Cybersec

BEARSO: Gravity - 1st '21
MIT: Gravity - 1st '20
PUSO: PPP - 1st '20, WIDI -1st '20

Nats:
Team - 3rd '18, '19
Roller - 1st '19
Mystery - 3rd '19
Buggy - 4th '19, 5th '18
Mission - 3rd '17




Rate my tests!

User avatar
MTV<=>Operator
Member
Member
Posts: 138
Joined: February 8th, 2019, 12:41 pm
Division: C
State: NY
Location: Dead
Has thanked: 8 times
Been thanked: 4 times

Re: Gravity Vehicle C

Post by MTV<=>Operator » January 9th, 2020, 2:14 pm

sciolyperson1 wrote:
January 9th, 2020, 9:44 am
MadCow2357 wrote:
January 9th, 2020, 6:54 am
Crimesolver wrote:
January 8th, 2020, 12:02 pm
does anyone have any ideas of reducing skidding once the car stops? The has been recently skidding at the very end of my runs, and I would like to know how to solve this problem other than moving the ramp around.
Is your test surface clean? You probably already do this, but if not it's a good idea to start swiffering the track before runs. Trying to brake efficiently without skidding is very hard when your wheels are on a dusty surface. Pretty sure these effects will be magnified this year as well because of how heavy the vehicles are this year.
Alternatively just don't add weight
Would not adding weight slow down the car?
THHS '21 Builder Cult Member
2017-2018: Mousetrap, Hovercraft, Towers
2018-2019: Mousetrap (8th regional), Boomilever (3rd regional), Wright Stuff
2020 Events/YUSO/regional
Gravity Vehicle/9/5
Detector Building/8/7
Wright Stuff/--/10
Ping Pong Parachute/--/--

User avatar
CPScienceDude
Exalted Member
Exalted Member
Posts: 339
Joined: December 12th, 2018, 2:40 pm
Division: C
State: IN
Pronouns: He/Him/His
Location: Crown Point High School
Has thanked: 114 times
Been thanked: 63 times

Re: Gravity Vehicle C

Post by CPScienceDude » January 10th, 2020, 5:04 am

MTV<=>Operator wrote:
January 9th, 2020, 2:14 pm
sciolyperson1 wrote:
January 9th, 2020, 9:44 am
MadCow2357 wrote:
January 9th, 2020, 6:54 am

Is your test surface clean? You probably already do this, but if not it's a good idea to start swiffering the track before runs. Trying to brake efficiently without skidding is very hard when your wheels are on a dusty surface. Pretty sure these effects will be magnified this year as well because of how heavy the vehicles are this year.
Alternatively just don't add weight
Would not adding weight slow down the car?
On my car, if I don’t add weight it would only go about 9 meters. So I have a ~800g weight over my rear axle
Captain of CPSO

Member of the Builder Cult

Assassinator 139 and 147
2021 events: Astronomy, Chem Lab, Ornithology, Machines, Gravity Vehicle, and Forensics
About Me!
RIP Indiana Flag GIF :(

User avatar
lindsmaurer
Member
Member
Posts: 46
Joined: May 16th, 2018, 11:57 am
Division: C
State: OH
Location: Home
Has thanked: 0
Been thanked: 3 times

Re: Gravity Vehicle C

Post by lindsmaurer » January 10th, 2020, 11:35 am

MTV<=>Operator wrote:
January 9th, 2020, 2:14 pm
sciolyperson1 wrote:
January 9th, 2020, 9:44 am
MadCow2357 wrote:
January 9th, 2020, 6:54 am

Is your test surface clean? You probably already do this, but if not it's a good idea to start swiffering the track before runs. Trying to brake efficiently without skidding is very hard when your wheels are on a dusty surface. Pretty sure these effects will be magnified this year as well because of how heavy the vehicles are this year.
Alternatively just don't add weight
Would not adding weight slow down the car?
Adding weight over the braking axle reduces skidding, and provides momentum. It doesn't slow down the car because the car is being launched by gravity, and so it falls at the same rate as a lighter car (technically faster bc of the reduced surface area to weight ratio)
Solon HS Junior Captain
DMAH
Sassy #137
1-3 placements: 40
Medals + ribbons: 72
 Circuits (4), Code, Detector (1), GLM, Gravity (8), Sounds
Would’ve done first four at states ;-;
 Circuits, Code, Detector, GLM, Dynamic, Machines? Sounds? Gravity?

User avatar
CPScienceDude
Exalted Member
Exalted Member
Posts: 339
Joined: December 12th, 2018, 2:40 pm
Division: C
State: IN
Pronouns: He/Him/His
Location: Crown Point High School
Has thanked: 114 times
Been thanked: 63 times

Re: Gravity Vehicle C

Post by CPScienceDude » January 15th, 2020, 12:31 pm

Interesting clarification:
(Section: 2 / Line: 1)
01/05/2020
ARE TEAMS FROM THE SAME SCHOOL ALLOWED TO SHARE A RAMP?
Yes; teams from the same school may share a ramp if it is it compatible with their vehicle.
Captain of CPSO

Member of the Builder Cult

Assassinator 139 and 147
2021 events: Astronomy, Chem Lab, Ornithology, Machines, Gravity Vehicle, and Forensics
About Me!
RIP Indiana Flag GIF :(

knightmoves
Member
Member
Posts: 284
Joined: April 26th, 2018, 6:40 pm
Has thanked: 2 times
Been thanked: 11 times

Re: Gravity Vehicle C

Post by knightmoves » January 15th, 2020, 1:04 pm

CPScienceDude wrote:
January 15th, 2020, 12:31 pm
Interesting clarification:
(Section: 2 / Line: 1)
01/05/2020
ARE TEAMS FROM THE SAME SCHOOL ALLOWED TO SHARE A RAMP?
Yes; teams from the same school may share a ramp if it is it compatible with their vehicle.
Very "interesting". Also seems to be in conflict with General Rule 4 (All pre-built devices presented for judging must be constructed, impounded, and operated by one or more of the 15 current team members unless stated otherwise in the rules.) and Rule 1 of the Gravity Vehicle Event (Teams design, build, and test one Vehicle and Ramp...)

But it is an official clarification, and therefore the rule, whatever I think of it. (And I can see the merits - ramps are bulky, and if allowing teams to share ramps allows more kids to compete, that's a good thing.)

Still, how often have you seen a school's JV team show up to a build event with a device that looks different from what their varsity team had? What I usually see is that the JV team(s) and the V team all have copies of the same design. In some cases, the V kids are explaining to the JV kids how to operate the device whilst waiting in line to impound it.

fyuan483
Member
Member
Posts: 34
Joined: January 13th, 2020, 2:27 pm
Division: C
State: NY
Has thanked: 0
Been thanked: 0

Re: Gravity Vehicle C

Post by fyuan483 » January 22nd, 2020, 6:41 pm

i’m new to this event and i understand that the target point is 9-12m, but in the rules i read that the target point is chosen after impound. is it chosen or it is between 9-12m?

Vortexx2
Member
Member
Posts: 42
Joined: September 2nd, 2019, 8:17 pm
Division: C
State: IN
Has thanked: 72 times
Been thanked: 0

Re: Gravity Vehicle C

Post by Vortexx2 » January 22nd, 2020, 6:51 pm

fyuan483 wrote:
January 22nd, 2020, 6:41 pm
i’m new to this event and i understand that the target point is 9-12m, but in the rules i read that the target point is chosen after impound. is it chosen or it is between 9-12m?
The target point is chosen after impound. However, whatever target point they choose must be within 9-12m.
2020 Events: Code Busters, Designer Genes, Gravity Vehicle, Machines, PPP

fyuan483
Member
Member
Posts: 34
Joined: January 13th, 2020, 2:27 pm
Division: C
State: NY
Has thanked: 0
Been thanked: 0

Re: Gravity Vehicle C

Post by fyuan483 » January 22nd, 2020, 7:12 pm

after impound and the target point is chosen, we have to adjust our brake system to stop at that distance right?

User avatar
xiangyu
Member
Member
Posts: 261
Joined: April 6th, 2019, 8:32 pm
Division: C
State: MI
Location: Hiding from Corona
Has thanked: 1 time
Been thanked: 2 times

Re: Gravity Vehicle C

Post by xiangyu » January 22nd, 2020, 8:00 pm

fyuan483 wrote:
January 22nd, 2020, 7:12 pm
after impound and the target point is chosen, we have to adjust our brake system to stop at that distance right?
Yes, you have to do it on site.
2020 Events: Wright Stuff, Gravity Vehicle, Circuit Lab, Boomilever, Ping-Pong Parachute, WIDI, Machines, Detector Building

BEARSO/SOLVI/Solon/UMich/Allendale
Helicopters: 1st/-/-/-/-
WICI: 33rd/-/-/-/-
Macines: 81st/-/-/-/-

Medal & Ribbon Count: 9
East Grand Rapids High School Team Captain

Locked

Return to “Gravity Vehicle C”

Who is online

Users browsing this forum: No registered users and 0 guests