Wheels

EngineeredEvil
Member
Member
Posts: 1
Joined: September 21st, 2019, 1:34 pm
Has thanked: 0
Been thanked: 0

Wheels

Post by EngineeredEvil » September 21st, 2019, 1:42 pm

Wheels, like many other parts of the gravity- powered vehicle, can make or break a vehicle's time and therefore it's score. This forum is for sharing ideas of the best wheel types in the Gravity Vehicle event.

Good luck! :geek: :arrow: :idea:

User avatar
windu34
Staff Emeritus
Staff Emeritus
Posts: 1366
Joined: April 19th, 2015, 6:37 pm
Division: Grad
State: FL
Location: Gainesville, Florida
Has thanked: 1 time
Been thanked: 26 times

Re: Wheels

Post by windu34 » September 21st, 2019, 4:44 pm

Not much to discuss, Banebot has inventory again.
Boca Raton Community High School Alumni
Florida Science Olympiad Board of Directors
National Physical Sciences Rules Committee Member
kevin@floridascienceolympiad.org || windu34's Userpage

User avatar
Tendan
Member
Member
Posts: 63
Joined: January 27th, 2019, 5:37 pm
Division: C
State: PA
Location: There
Has thanked: 5 times
Been thanked: 0

Re: Wheels

Post by Tendan » September 24th, 2019, 7:31 pm

The green 2 3/8" T40 wheels from Banebots are sold out. I checked about a month ago and they were also out of stock then. Does anyone know if they had stock at some point and I just missed out, or if it's just taking a while to restock? It seems that all other wheels are in stock.
2019 - 2020 Events
~ Boomilever
~ Detector Building
~ Gravity Vehicle
~ Machines
~ Ping-Pong Parachute

User avatar
sciolyperson1
Exalted Member
Exalted Member
Posts: 970
Joined: April 23rd, 2018, 7:13 pm
Division: C
State: NJ
Pronouns: He/Him/His
Location: WW-P HSN
Has thanked: 297 times
Been thanked: 461 times

Re: Wheels

Post by sciolyperson1 » September 24th, 2019, 9:41 pm

Tendan wrote:
September 24th, 2019, 7:31 pm
The green 2 3/8" T40 wheels from Banebots are sold out. I checked about a month ago and they were also out of stock then. Does anyone know if they had stock at some point and I just missed out, or if it's just taking a while to restock? It seems that all other wheels are in stock.
They're commonly out of stock, I suggest giving them a call to see when they'll be back in stock, if ever.

Check frequently for the wheels, they usually sell out fast, so when you see that they're available, buy more. My gravity wheels for instance are just extra buggy wheels I bought, which I never used
WW-P HSN '22, Community '18, BirdSO Tournament Director
'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


Rate my tests!

User avatar
xiangyu
Member
Member
Posts: 266
Joined: April 6th, 2019, 8:32 pm
Division: C
State: MI
Location: Hiding from Corona
Has thanked: 2 times
Been thanked: 2 times

Re: Wheels

Post by xiangyu » September 28th, 2019, 3:38 pm

What is the difference in performance between the green one and the orange one? I know from the description one is soft tread and one is medium, but how do they vary in performance? Does the green one give more traction? How much better is it?

Second question: How do you mount the wheels to the threaded rods? Do you get one of the BaneBot T40 hubs and use 2 nuts to lock it into place?
2020 Events: WS, GV, Boomi, PPP, WIDI, Machines, Detector, Digital

BEARSO/SOLVI/Solon/UMich/Allendale
Heli: 1/NA/NA
WICI: 33/NA/26
Machines: 81/42/53
Detector: -/49/39
WS: NA/NA/2
Digital: -/NA/1
Boomi: NA/NA/4

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

User avatar
sciolyperson1
Exalted Member
Exalted Member
Posts: 970
Joined: April 23rd, 2018, 7:13 pm
Division: C
State: NJ
Pronouns: He/Him/His
Location: WW-P HSN
Has thanked: 297 times
Been thanked: 461 times

Re: Wheels

Post by sciolyperson1 » September 29th, 2019, 7:49 am

xiangyu wrote:
September 28th, 2019, 3:38 pm
What is the difference in performance between the green one and the orange one? I know from the description one is soft tread and one is medium, but how do they vary in performance? Does the green one give more traction? How much better is it?

Second question: How do you mount the wheels to the threaded rods? Do you get one of the BaneBot T40 hubs and use 2 nuts to lock it into place?
1) I can't really feel a difference, I've used both in the past.

2) T40 hubs come with set screws which allow you to lock it into place on the rod.
WW-P HSN '22, Community '18, BirdSO Tournament Director
'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


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: Wheels

Post by MTV<=>Operator » September 29th, 2019, 11:12 am

Just a clarification: Would smaller wheels would be preferable to larger wheels in this event? They have less rotational inertia and a higher potential for accuracy, so I would think they would be better, but I don't know if I left out any other factors.
THHS '21 Builder Cult Member
2017-2018
2018-2019
2019-2020: GV (9 YUSO, 5 Regional), Detector (8 YUSO, 7 Regional), WS (10 Regional), PPP
2020-2021 Events/ Yosemite
Vehicle Design / 1
WICI / 3
Circuits /--
Machines /--

User avatar
windu34
Staff Emeritus
Staff Emeritus
Posts: 1366
Joined: April 19th, 2015, 6:37 pm
Division: Grad
State: FL
Location: Gainesville, Florida
Has thanked: 1 time
Been thanked: 26 times

Re: Wheels

Post by windu34 » September 29th, 2019, 12:37 pm

MTV<=>Operator wrote:
September 29th, 2019, 11:12 am
Just a clarification: Would smaller wheels would be preferable to larger wheels in this event? They have less rotational inertia and a higher potential for accuracy, so I would think they would be better, but I don't know if I left out any other factors.
People are getting way to caught up on the rotational inertia concept. It plays a VERY small role and is negligible for this event. Larger wheels will be smoother and more tolerant to imperfections in the floor - this outweighs those other concern imo. I have always used the 2 7/8", and think they are a good size. I could also see how larger wheels could be better as well.
Boca Raton Community High School Alumni
Florida Science Olympiad Board of Directors
National Physical Sciences Rules Committee Member
kevin@floridascienceolympiad.org || windu34's Userpage

User avatar
Things2do
Member
Member
Posts: 154
Joined: February 12th, 2018, 2:30 pm
Division: Grad
State: TN
Pronouns: He/Him/His
Location: Unfortunately, not the Desert Southwest
Has thanked: 86 times
Been thanked: 50 times

Re: Wheels

Post by Things2do » October 2nd, 2019, 3:38 pm

I use DVDs without the reflective stuff that I acquired from Doc Fizzix, the rubber adapters that he sells, and the tiny little brass axles that come with 'em. The threaded rod is slid into the brass tubes, with the wingnut on it. I don't think they'll hold up to the mass Imma need, but I'm gonna try that first. I might try having 8 wheels on the axles to spread out the load. Do y'all think that that would work? If not, do y'all think that gluing multiple disks together would help? I might try platters, if I can make 'em securely fit some form of axle...
John 5:46-47
Eagle Scout
Builder Cult
 Backyard Botany, Can Racer, Name That Scientist,
CTW, Meteo., WV, Scrambler, Road S., Dy. Plan., Fast Facts, Rocks/Mine., Optics, MTV, Remote Sensing, ExpeD., Geo. Map., Fossils, Circuits., Thermo., Boomi., WS, Machines, GV
More here.Image

Rossyspsce
Member
Member
Posts: 209
Joined: June 3rd, 2018, 5:32 pm
Has thanked: 8 times
Been thanked: 4 times

Re: Wheels

Post by Rossyspsce » October 10th, 2019, 8:45 pm

does banebots sell the shafts for the hubs or do people just buy them from a hardware store?

Locked

Return to “Gravity Vehicle C”

Who is online

Users browsing this forum: No registered users and 1 guest