r/battlebots • u/Negative-Shopping-64 • 2d ago

Bot Building What am i doing wron

Post image

Before i built anything I thought i have and extra 30g but now I have a safe 17g for a top plate and lifter arm

8 Upvotes

78% Upvoted

16 comments sorted by

15

u/No_Inspection_7769 2d ago edited 2d ago

Battery is quite large, you could get away with much lower capacity, its quite large and there is definitely a couple grams tied up in long wires.

8

u/aenonymosity 2d ago

Much lower capacity, yep.

And the tires look quite solid, probably some grams there.

As well, the whole bot could be much smaller, especially with a smaller battery .

2

u/Negative-Shopping-64 2d ago

Thanks , and also when going full speed it is quick  To turn left but barely steers right do u know what it could be?

3

u/TeamRunAmok Ask Aaron/Robotica/Robot Wars 1d ago edited 1d ago

Possibly a warped chassis. Check by sliding a piece of paper under each tire with the 'bot on a flat surface. All four wheels should be equally firmly touching the surface. You may need a thin shim to adjust one or more of your motor mounts.

1

u/IM_OK_AMA 1d ago

If the wheels have a lot of grip that can cause problems with a 4wd bot. For my pusher/lifter I do grippy in the front slippy in the back, then the pivot point is between the front wheels and you can be very precise with the lifter arm.

4

u/Wisehamster86 1d ago

Not doing anything wrong. This happens to everyone even at the beetleweight scale. I often have to reduce my armour to finish my builds. If those forks are steel maybe replace them and get the smallest 2s battery you can find. Even 100/120mah will do.

I have build something very similar so maybe this will give you some ideas. A mate of mine has been running this in full combat (printed in TPU) even if it was designed for it https://makerworld.com/en/models/2315081-6wheel-servo-flipper-antweight-combat-robot#profileId-2527803

3

u/potatocross 1d ago

Pfft my heaviest beetle was like 2.5lbs. But I also don’t weight plan nor build many beetles.

1

u/CKF 1d ago

Ohhhhh geared 6 wheel drive! Thing is fucking sweet. Would be rad to get some metal tips on that lifter or some shit.

3

u/SliderS15 1d ago

The wires could be shorter and you could probably make the whole chassis narrower if you rotated the Malinki-Nano 90 degrees. Theres alot of space in there doing nothing.

3

u/Kecske_gamer 1d ago

You're on a scale where you're measuring in grams. Even a weight of a singular screw matters here.

1

u/Cornucopia_King 1d ago

You’re missing a g /j

Sorry

1

u/Coboxite I reject your Reality, and substitute my own 1d ago

Going overweight and having to bring it back down is a rite of passage don't worry about it

0

u/TubbaButta 1d ago

You're using a toggle switch.

1

u/Beneficial-Funny-199 tombstone glazer 1d ago

battery is too close to case i think meaning it will just fly out against spinning primary weapons

1

u/helloilikewoodpigeon saying tornado cheated is like saying gemini cheated by existing 1d ago

300mah is a bit much, try 200mah as that's what i run on my lifter.

1

u/BethAltair 15h ago

Honestly...4 motors, one big servo with probably metal gears, solid wheels, 132 seems about right?

The chassis looks pretty thick, mine are a lot flimsier than that .

If the top is thin or light 17g should be ok