Vehicle Thickness

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sciolyperson1
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Vehicle Thickness

Postby sciolyperson1 » September 22nd, 2018, 8:49 pm

How thin are you guys designing your vehicles?
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Re: Vehicle Thickness

Postby MadCow2357 » September 22nd, 2018, 8:58 pm

Uh 10-15 cm but you already know that bc I told you.
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Re: Vehicle Thickness

Postby sciolyperson1 » September 22nd, 2018, 9:05 pm

MadCow2357 wrote:Uh 10-15 cm but you already know that bc I told you.


I'm asking other people ok
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Roller Coaster National Champion '19
Team (Nats) - 3rd '18, '19
Mystery - 3rd '19
Buggy - 4th '19, 5th '18
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'17: Scrambler - Towers - Mission
'18: Buggy - Towers - WIDI
'19: Buggy - Roller - Mystery - Boomi
'20: Gravity - Boomi - PPP - Detector? - Wright? - WIDI?

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Re: Vehicle Thickness

Postby MadCow2357 » September 23rd, 2018, 4:19 pm

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Last edited by MadCow2357 on September 23rd, 2018, 7:57 pm, edited 1 time in total.
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Re: Vehicle Thickness

Postby vehicleguy » September 23rd, 2018, 4:51 pm

I'm going for around 20 centimeters.
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Re: Vehicle Thickness

Postby windu34 » September 24th, 2018, 12:32 pm

I would consider competitive vehicle widths to be less than 14-15cm. I think 10cm is a good width to shoot for and you will start to have problems with vehicle dynamics once you start going smaller than that
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Re: Vehicle Thickness

Postby waffletree » September 24th, 2018, 2:09 pm

Depending on how many volts my motor will be, it'll be somewhere between 11-16 cm
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Re: Vehicle Thickness

Postby sciolyperson1 » September 24th, 2018, 2:20 pm

windu34 wrote:I would consider competitive vehicle widths to be less than 14-15cm. I think 10cm is a good width to shoot for and you will start to have problems with vehicle dynamics once you start going smaller than that


Did your EV ever tip over?
HSN '22

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


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

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Re: Vehicle Thickness

Postby windu34 » September 24th, 2018, 3:36 pm

sciolyperson1 wrote:
windu34 wrote:I would consider competitive vehicle widths to be less than 14-15cm. I think 10cm is a good width to shoot for and you will start to have problems with vehicle dynamics once you start going smaller than that


Did your EV ever tip over?

No, but my EV was pretty heavy and had a pretty low center of mass. Battery buggys will should be much lighter since you guys dont have as much battery capacity to work with. I would be less worried about tipping over and more worried about losing vast amounts of precision in steering and aiming. Off the top of my head, decreasing wheel base will also have negative effects with torque steer and the smallest imperfections in the floor can be devastating with really small wheel bases.
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Re: Vehicle Thickness

Postby sciolyperson1 » September 24th, 2018, 5:19 pm

windu34 wrote:
sciolyperson1 wrote:
windu34 wrote:I would consider competitive vehicle widths to be less than 14-15cm. I think 10cm is a good width to shoot for and you will start to have problems with vehicle dynamics once you start going smaller than that


Did your EV ever tip over?

No, but my EV was pretty heavy and had a pretty low center of mass. Battery buggys will should be much lighter since you guys dont have as much battery capacity to work with. I would be less worried about tipping over and more worried about losing vast amounts of precision in steering and aiming. Off the top of my head, decreasing wheel base will also have negative effects with torque steer and the smallest imperfections in the floor can be devastating with really small wheel bases.


Other than the wheelbase - mine is 32cm btw - would the wheel diameter affect anything?
HSN '22

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


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

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Re: Vehicle Thickness

Postby dragonfruit35 » September 25th, 2018, 8:21 am

sciolyperson1 wrote:
windu34 wrote:
sciolyperson1 wrote:
Did your EV ever tip over?

No, but my EV was pretty heavy and had a pretty low center of mass. Battery buggys will should be much lighter since you guys dont have as much battery capacity to work with. I would be less worried about tipping over and more worried about losing vast amounts of precision in steering and aiming. Off the top of my head, decreasing wheel base will also have negative effects with torque steer and the smallest imperfections in the floor can be devastating with really small wheel bases.


Other than the wheelbase - mine is 32cm btw - would the wheel diameter affect anything?


If you're talking about the diameter of the wheels themselves, the larger they are, the bigger their circumference, so the farther the buggy travels with each rotation of the axle. Depending on how you're braking, this can be less precise (if you're using a wingnut brake you will most likely have to use some weird fraction of a rotation, whereas perhaps with a smaller wheel you could use a whole number). Of course, larger-diameter wheels will also lead to the vehicle moving faster, albeit with less torque.

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Re: Vehicle Thickness

Postby megrimlockawesom » November 1st, 2018, 6:25 am

What materials are y'all using? I kinda want to know
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Re: Vehicle Thickness

Postby vehicleguy » November 1st, 2018, 8:22 am

megrimlockawesom wrote:What materials are y'all using? I kinda want to know

I'm combining the back of an r/c car I tore apart (for the motor) with pieces from an old erector set.
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Re: Vehicle Thickness

Postby MadCow2357 » November 1st, 2018, 11:27 am

megrimlockawesom wrote:What materials are y'all using? I kinda want to know

Aluminum angle bars 3/4", dial caliper, T40 banebots wheels.

By the way, does anybody have 4 green T40 wheels 2 7/8" they are willing to sell?
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Re: Vehicle Thickness

Postby builder83 » November 1st, 2018, 12:13 pm

megrimlockawesom wrote:What materials are y'all using? I kinda want to know


Aluminum tubing. T40 wheels. My connections and bearing mounts are 3d printed. Scope mount, motor mount printed also. Threadstock of course for axles. Bolt adjustment no caliper. Probably will only use 4 batteries.

Madcow, did you call on the 2 7/8 t40s? Maybe if there are enough requests.... they will make more?


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