Thunder Underground

Want to get the scoop on future CFL leagues? This is the place to find early discussion.

Moderator: Tournament Hosts

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BEES
Posts: 1857
Joined: Wed Dec 31, 1969 7:00 pm
Location: Chapel Hill, NC, USA

Re: Thunder Underground

Post by BEES » Thu Aug 02, 2018 11:00 pm

Interesting... I don't have to enter all weight classes...

Kind of like that actually.

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Hooray For Lexan
Posts: 574
Joined: Wed Dec 31, 1969 7:00 pm

Re: Thunder Underground

Post by Hooray For Lexan » Sun Sep 09, 2018 8:33 pm

Uh yeah I'm entering stuff. Entries coming at some point.

Featherweight:

Ori
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Anti-spinner config
Forks config
Anti-hammer config
Flipper range of motion (shown with no modular armor apart from short spatula. Would not actually fight like this.
Flipper range of motion, side view

Stats:

Speed: 8
Traction: 7
Torque: 2
Weapon: 4
Armor: 9 (+2 front wedge or shock-mounted top plates)

More fandombots! I've been wanting to make a bot based on Ori from Ori and the Blind Forest for like a year, but I didn't know what kind of weapon would be a good analogue to his iconic Bash (aka reflect projectiles or enemies one direction and throw self in the other direction) ability. I mean, besides a punching bar, because those suck.

Anyway, Ori is a featherweight 2WD four-bar flipper. The weapon is powered by a gas spring, which is basically a pneumatic cylinder without the ports or entire rest of the pneumatic system. The flipper is retracted by a powerful gearmotor-driven winch winding a thick Kevlar cord. Once the flipper is fully retracted a catch engages to hold it in place and the winch is automatically unwound so it won't create any extra friction. Pushing the catch free fires the weapon. The flipper can fire approximately every 3-4 seconds, and since the retraction is electric won't run out of shots or reduce in power during a match. Also, because the flipper is held in place by the catch when in the ready position, the bot's weight is in fact resting on the spatula at the end of the arm, so it acts as a 2WD wedge. Ori has a brushless drivetrain capable of reaching about 20 MPH. He can run upside-down and self-right using the flipper. A 2-1/2 foot flip height (vertical stroke of the arm is about 6") is plenty to self-right since featherweights are physically small.

There are four modular wedge/armor configs. The first is a long spatula and steel plates bolted onto the sides of the wedge. The second removes the spatula entirely and uses a pair of steel plates with long pontoon-like forks, to counter the inevitable "lol angle-in" strategies. In this config the flipper is NOT flush with the ground: the bot's weight rests on the forks instead. The third config uses a shorter spatula on the flipper and a set of 3/4" UHMW blocks covering the wedge to protect against horizontal spinners. The fourth has no additional armor plates on the wedge, and instead uses a short spatula on the flipper and a set of shock-mounted top plates covering part of the top in the hopes of having some defense against hammers and other overhead weapons.

The percentage of the robot's chassis surface area receiving an armor bonus is as follows: 29% when using the long spatula or forks configs, 30% using the UHMW blocks (the UHMW ones are a little taller), 32% in the anti-hammer config, where the shock-mounted plates receive an armor bonus.


Lightweight:
Terpsichora

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Speed: 5
Traction: 4
Torque: 1

Ko Config
Weapon: 13
Armor: 7

Ken Config
Weapon: 11
Armor: 9 (+2 front wedge)

Nen Type: Specialist

Terpsichora is a Pulsar-style drisc spinner based on Neferpitou from Hunter x Hunter. There are two configurations. "Ko" configuration has a relatively thin, bolted-on wedge with sharpened forks that can get underneath the defenses of almost any opponent, and the deadly claw-like discs are at full speed. "Ken" configuration ditches the forks in favor of a thicker, shock-mounted wedge for fighting powerful spinners. To make weight the weapon battery has to be replaced with a smaller, lower-voltage one, which reduces the weapon's rpm, but those claw-like teeth can still grab and launch opponents, and hit hard enough to be dangerous.

Can self-right by the weapon hitting the arena floor.

Middleweight:
Manglerfish
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Alternate Configs:
Four-pronged Plow
Two-pronged Plow
ABR Plow
Anti-VS Plow

Stats:
Speed: 6
Traction: 5
Torque: 2
Chassis Armor: 7

Normal Configs - Four-pronged Plow and Two-pronged Plow:
Weapon: 10 (3-point saw arm)
Armor: 7

Anti-Spinner Configs - Anti-VS Plow and ABR Plow:
Weapon: 8 (3-point saw arm)
Armor: 9 (+2 front plow)

I actually built a sawbot! Meet Manglerfish, which is actually based on multiple deep sea fish including a Stoplight Loosejaw. Has a selection of sturdy shock-mounted plows and a diamond-coated rescue saw blade. Two of the plow options, the ABR and Anti-VS Plows, are extra-beefy to stand up to spinners, but their heavier weight means some of the weapon batteries have to be removed, making the saw a bit less effective.

The saw arm has a range of motion of 180 degrees, from All the way behind the robot to extending slightly below the front forks. The saw actuator uses a harmonic gearbox with a friction clutch, so it can move freely in impacts but it won't flop around under its own weight. This allows the arm to easily be held at any angle. If it's being kept behind the robot, the springy "lures" on top help prevent wheelies. The fangs on the saw guard are soft plastic.

Note: the back of the chassis has a bevel to prevent high-centering. Also note that the ABR plow has thick "ears" on top extending an inch above the chassis to help stop high-mounted spinners.

Superheavyweight:
Starfish Prime
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Stats:
Speed: 4
Traction: 3
Torque: 1

Undercutter Config: Weapon 15, Armor 7
Flail Config: Weapon 14, Armor 8 (+1 weapon bar and flails)

Starfish Prime is a horizontal spinner with a special party trick: it can fight as either an undercutter or a flail!

How the config change works: First, the drive wheels. In the undercutter config the wheels stick out both the top and bottom, allowing Starfish Prime to run either way up. For the flail config they are replaced with smaller wheels mounted an inch higher. These ONLY stick out the "top," which really becomes the bottom: in the flail config the entire robot is upside-down.
The flail config is not invertable. It can also start inverted in undercutter mode. The power switch access holes are on the back of the robot to allow safe inverted powerup. Second, a pair of standoffs (shown here) are attached to the frame to allow the flail to clear the ground in front. In either config the tips of the weapon are about 4" off the ground in the front when the chassis is inverted. Third, the weapon drivetrain has two stages of chain reduction from the LEM-200 motor, with a friction clutch on the intermediate shaft. The first stage has a 2.5:1 ratio, the second stage is 1:1 in undercutter mode and 2:5:1 in flail mode. Accounting for aerodynamic drag, this gives the 42" long bars and the 10 ft diameter flail about the same tip speed of about 250-270 MPH.

Finally, the weapons themselves. The two undercutter bars - one straight and one curved - are 42" long, weigh about 90 lb, and store 80-90 kJ at 2,000 rpm. The flail assembly consists of a 5' long, 57 lb central bar and two 10 lb flail teeth at the end of 2' long Kevlar ropes, giving a total diameter of 10 feet (accounting for the height of the impactors). Each flail stores about 30 kJ at 750 rpm, with the central bar storing an additional 13 kJ. While the flail bar is longer and thinner, it's a slightly softer steel and is tempered to be springy, or worst-case bend slightly if it takes a direct hit, and the flails' ability to move reduces the stresses on it. The flail bar also has over an inch of vertical clearance from the chassis. The flails' central bar is long enough to keep them from getting caught on the chassis.

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NoiseyGiraffe
Posts: 161
Joined: Wed Dec 31, 1969 7:00 pm
Location: Scotland
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Re: Thunder Underground

Post by NoiseyGiraffe » Mon Sep 10, 2018 6:38 pm

FW - Little Labyrinth - My Reddit entry now has a little sister. Little Labyrinth is an adaptable bar spinner, meaning it can be either a horizontal or vertical bar spinner depending on which side it is driving. It does this by using four brushless motors powering an angled wheel each at each edge of the robot so it behaves like a regular 2WD robot. The body has been designed so that can't get stuck it will always land onto it's wheels. The bar is 360mm long and is powered by four brushless motors.

Speed: 4 / Traction: 2 / Torque: 1 / Weapon: 14 / Armour: 9 - CAD - https://skfb.ly/6BLGy

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LW - Killjoy 3 - An invertable 2WD robot with 360° lifting jaws designed to grab opponents, lift and push them around the arena. Drive electronics are under hardox wedges and the weapon motors are within the arms itself. The arms can push itself over and self right it.

Speed: 6 / Traction: 5 / Torque: 3 / Weapon: 4 (Lifter: 3 / Clamp: 3) / Armour: 12 - CAD - https://skfb.ly/6CKp6

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MW - Vortex 3 - Vortex continues with its' experimental 4-bar mounted drum spinner. The drum is now mounted on a longer arm allowing for a bigger punch from the 4 bar flipper. This is on a new mecanum 4WD chassis to allow for more manoeuvrability. The front wedge is 10mm Hardox and has a hinged skirt to allow it to get under opponents easier. It is invertable and can use the 4-bar drum spinner to self right.

Speed: 6 / Traction: 4 / Torque: 3 / Weapon: 7 (Lifter: 5 / Drum: 5) / Armour: 10 (+1 front wedge) - CAD - https://skfb.ly/6BLG8

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HW - Vertigo 4 - My trademark vertical spinner has been redesigned yet again. Now featuring completely brushless 2WD and weapon motors, a new 10mm thick front wedge with ground scraping tongue and "anti-angle in" skirts and chassis mounted magnets to help eliminate gyro-dancing. The bar also self rights the robot when flipped.

Speed: 5 / Traction: 3 / Torque: 1 / Weapon: 13 / Armour: 8 - CAD - https://skfb.ly/6BLGv

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SHW - Titan - A 4WD Brick with mecanum drive so it can keep its pneumatic scoop can always facing the enemy. The pneumatic scoop is a low pressure system for a more flips during a fight over potential OOTAs. The scoop can self right it and there are side skirt to stop other flippers getting underneath.

Speed: 5 / Traction: 5 / Torque: 3 / Weapon: 3 / Armour: 14 (+1 scoop) - CAD - https://skfb.ly/6BLG9

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Last edited by NoiseyGiraffe on Mon Nov 05, 2018 10:18 am, edited 4 times in total.

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The Monsterworks
Posts: 1058
Joined: Thu May 26, 2016 12:00 am
Location: Canada, for now

Re: Thunder Underground

Post by The Monsterworks » Fri Sep 14, 2018 2:44 pm

Death's Head Sarsaparilla




Death's Head Sarsaparilla by FloatingCastleRobotics on Sketchfab



What would happen if a battlebot met a late nineteenth century locomotive boiler met East Kentucky moonshine? I honestly don't know how many people would even think to ask that question, but here's the answer anyway! I swear I wasn't drinkin' any of the stuff when I made this.

Barrel aged to perfection and supreme potency is Death's Head Sarsaparilla. A diesel-powered shell spinner (I'd have liked to do steam, but that's just not even close to viable), it uses its functional smokestack as a self-righting pole. A close examination reveals the filigree work on the teeth and parts of the shell, as well as spoked chrome wheels supporting whitewall tires, loosely based off of the 1930s-era Auburn Boattail Speedster. But dontcha go thinking this diabolical contraption is all show and no go. Step up and take a shot at your own peril.



Stats: TBA




Elrathia 2




Elrathia 2 by FloatingCastleRobotics on Sketchfab



Given the walker nerf and the hammer nerf, this thing is just here to look pretty. Stats TBA.
Last edited by The Monsterworks on Sat Nov 03, 2018 12:14 pm, edited 3 times in total.

Evil Toaster
Posts: 1
Joined: Fri Sep 21, 2018 7:59 am

Re: Thunder Underground

Post by Evil Toaster » Sat Sep 22, 2018 4:47 am

Team wait what

Bot name: A.M.M.N.O
Speed-5
Traction-4
Torque-1
Weapon-14
Armor-6

A simple boxy heavyweight bot with a spinner beater bar and a tail in the back, along with simple extensions off the wheel guards to try to help out with it not getting stuck. Mainly designed to fight most bots with wedges or vertical spinners but can take a few hits from anything else


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Hiicantpk
Posts: 420
Joined: Wed Dec 31, 1969 7:00 pm

Re: Thunder Underground

Post by Hiicantpk » Thu Sep 27, 2018 12:25 am

Maybe not?

LW: Tidal Wave 2
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Shields off

MW: Chronic Jobber
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Bar

stats tbd
Last edited by Hiicantpk on Tue Dec 11, 2018 8:17 pm, edited 2 times in total.
".. if Kody is removing OOTAs, I'm flying to Canada for the sole purpose of taking a shit down his chimney. :v: " - GF93

Team 57

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Cha0sFerret
Posts: 1112
Joined: Wed Dec 31, 1969 7:00 pm
Location: Florida

Re: Thunder Underground

Post by Cha0sFerret » Sun Oct 07, 2018 3:47 am

Is this still open?

LW: Vapor Trail
I've been holding this in reserves for too long. Bird's gotta fly sometime, you know?

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Speed: 5
Traction: 4
Torque: 1
Weapon: 10
Armor: 10

2WD vertical spinner. The tail rotates freely.

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Plerco
Posts: 1
Joined: Wed Dec 31, 1969 7:00 pm

Re: Thunder Underground

Post by Plerco » Sat Oct 13, 2018 1:56 am

Idk how entering tournaments and stuff works here, but I'll give it a shot

Featherweight- Wormhole
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A zippy vertical spinner with the spunk and energy of Brutus, but hopefully a bit more appeal in the looks department.
Speed: 6
Traction: 4
Torque: 1
Weapon: 12
Armor: 7

MW-Michael
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Blatant Mecha Rampage clone. Huge wingspan, no hubmotor, and capable of landing some pretty devastating blows.
Speed: 4
Traction: 3
Torque: 1
Weapon: 14
Armor: 8

HW- Riddle
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A gigantic dual vertical spinner aiming to outdo HUGE as the tallest vert. Easily self rights with the huge force of its gigantic weapon, with ground scraping wedges to encourage engagement with the bars.
Speed: 2
Traction: 1
Torque: 1
Weapon: 16
Armor: 10

Rocket
Posts: 10
Joined: Mon Aug 06, 2018 3:34 pm

Re: Thunder Underground

Post by Rocket » Fri Nov 02, 2018 3:04 pm

TEAM WORST SWORDSMAN INBOUND!

FW: Tree Surgeon 2
Tree Surgeon 2 picturesShow
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Speed: 5 | Traction: 3 | Torque: 1 | Weapon: 11 (10 saw/10 arm, same motor) | Armour: 10 (+2 w0dge) | 2WD | Static wedge

Returning with a highly revamped setup in no way inspired by a certain Mr. Go, Tree Surgeon 2 is the most powerful chainsaw in ARC. That this is because nobody else is using a chainsaw in ARC is beside the point. Its chainsaw arm has been revamped to act as an extremely fast "snaptrap" clamp, as it's connected to the brace of powerful electric motors that drive the saw itself. A complicated set of gears means that the motors don't stall out when the arm is pressed against a target. Additionally, the robot has a spring-loaded stabilizing tail behind it, as the explosive nature of the armature could otherwise lead to it flopping around a bit. The wedge forks are also serrated, meaning that it's harder for opponents to get off as they snag in wheel bays and so forth. This is a much-improved machine and one that has some hopes of troubling the playoff berths in a manner beyond simply playing spoiler to more conventional and/or sane robots. =]

LW: GPODAWUND
GPODAWUND picturesShow
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Orth shot without side skirt
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Overhead oblique
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The memery continues
Speed: 7 | Traction: 5 | Torque: 1 | Weapon: 5 | Armour: 12 | 2WD | Hinged wedge

GPODAWUND takes the design ethos of ROBOT2 bad ideas machine Hobart and... goes in completely the opposite direction, favouring a low-power, high-torque eggbeater drum and enough armour to survive global thermonuclear war. Its fast drivetrain and removable hinged wedge plates on the front allow it to take on spinners and beat them at their own game, and its weapon, while not hugely powerful, is able to fling its opponents around. It's also the first invertable bot I've ever entered into a competition, though its self-righting mechanism consists of ramming its face into the opponent and hoping that the resultant bounce is kind. It's a tough little machine designed for speed and staying power, and here's hoping it doesn't go 0-16. =]

MW: DRAGONFIST
Dragonfist pictureShow
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Speed: 3 | Traction: 1 | Torque: 1 | Weapon: 16 | Armour: 9 | 2WD | Full-body spinner

With revisions to the internals making it a lot more reliable, Dragonfist is back and better than ever! Team Worst Swordsman's sole previous playoff hopeful is returning with its weird combination of horizontal flails and shell spinning. The weaponry now hits quite a lot harder, and we were able to skimp a bit on armour to get the shell up and running at full damage capacity. With the power turned up, Dragonfist is here to show people once again that flail meta is best meta. =]

HW: TABOR MARK 3: CLAN BIDDY
Tabor Mark 3 picturesShow
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Interchangeable scoopsShow
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Type 2 Anti-Rambot Wedge
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Type 3a/b Anti-HS ABR Plough. 3a is a plain wedge, 3b is the one with the teeth
Speed: 6 | Traction: 4 | Torque: 3 | Weapon: 7 (5 turret / 5 lifter) | Armour: 10 (+2 lifter) | 4WD | Omni-Directional Assault Spatula

She's back, baby. Tabor Mark 3 is a very different beast from the falling-over-trons of competitions past; now sporting a much longer wheelbase, hinged side skirts, and shock-mounting for the arms as well as on the interchangeable scoops, the old girl is now able to lift much more effectively and without pitching forward all the time. With powerful drive and defensive prowess, it might finally be Tabor's time to shine. Do your worst. Oh, and the Clan?

CALL LIFE ALERT NOW BITCH I DOUBLE DARE YOU.

SHW: LABRYS 2
Labrys 2 PicturesShow
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Speed: 3 | Traction: 2 | Torque: 1 | Weapon: 17 (13 spinner / 13 axe / 4 clutch) | Armour: 7 | 2WD | Forked Wedge

A refinement of the original lesbian combat robot, Labrys 2 is a much improved design from the original chunky 4WD version, featuring better disc placement and a wedge that can actually wedge stuff. Its wide stance and short, fat drisc helps it to control its gyroscopic forces, meaning it can turn better, and it also features stabilizing tails so it doesn't hop around as much when firing the axe. Said axe has been beefed up considerably too, with a full 13 power for dealing with unpleasant bricks, thus making it one of the few truly effective two-weapon bots in the competition. Here's hoping, anyway.
TEAM WORST SWORDSMAN
"The world's best swordsman doesn't fear the second-best; he fears the worst swordsman, because he can't predict what the idiot will do."

ICECrown
SHW: Labrys (1-1) (Lifetime: 1-1)

Thunder Underground
FW: Tree Surgeon 2 (0-0) (Lifetime: 2-5)
LW: GPODAWUND (0-0) (Lifetime: 0-0)
MW: Dragonfist (0-0) (Lifetime: 5-6)
HW: Tabor Mk. 3 (0-0) (Lifetime: 4-8)

ROBOT2
LW: Hobart (3-4) (Lifetime: 3-4)

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GF93
Posts: 6037
Joined: Wed Dec 31, 1969 7:00 pm
Location: The Pit of Oblivion

Re: Thunder Underground

Post by GF93 » Sun Dec 09, 2018 7:38 pm

Alex V is return

FW - ???

LW - ???

MW - ???

HW - ???

SHW - ???

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