Crash & Burn: Mini-Tournament of Death 3

[leorcc]

So?

[corsair_lightning]

So, its just interesting to see both robots in the same tourney again.

[leorcc]

Ah, well I just picked one out of the stable and went with it. I didn't even look at what I'd done before.

[corsair_lightning]

I'm sorry about this, Kody, but I had some last minute modifications to make on Minesweeper:

Minesweeper 1.1
Weight: 100kg
Shape: Tornado (S7)
Colour: Gold on top and bottom, Silver on the sides, with MINESWEEPER written on the sides in red. The scoops are bronze.
Dimensions: 90cm x 85cm x 25cm
Drive: 2x 36v LEM-170 motors, powered by 8x A123 Battlepacks. The motors power all 4 wheels via a belt system, and I should get about an average of 26hp from them.
Locomotion: 4 Titanium/Vanadium alloy wheels with Vulkanized rubber tyres.
Armour: 5.25mm Hardox monocoque, underneath that is 1cm of vulkanized rubber to absorb impacts.
Speed: 20mph
Ground Clearance: 0mm at front and back due to scoops, and 5mm at sides.
Turning Circle: 0m
Weapon: 2 Hardox snowplow-like scoops that can move slightly vertically, like Behemoth's, so I get good pushing power, but 0mm ground clearance at front and back.
Srimech: Invertible
Strengths: Super-reliable and fast. Now more powerful.
Weaknesses: No real offensive weapon.

[kodster]

Someone may correct me if I'm wrong, but LEM170s are only really good for weapon motors as they only easily spin one direction. Not good for drive motors, Mark.

[corsair_lightning]

Let me guess... LEM-200s?

Minesweeper 1.1
Weight: 100kg
Shape: Tornado (S7)
Colour: Gold on top and bottom, Silver on the sides, with MINESWEEPER written on the sides in red. The scoops are bronze.
Dimensions: 90cm x 85cm x 25cm
Drive: 2x 48v LEM-200 motors, powered by 9x A123 Battlepacks. The motors power all 4 wheels via a belt system, and I should get about an average of 23hp from them.
Locomotion: 4 Titanium/Vanadium alloy wheels with Vulkanized rubber tyres.
Armour: 5mm Hardox monocoque, underneath that is 1cm of vulkanized rubber to absorb impacts.
Speed: 20mph
Ground Clearance: 0mm at front and back due to scoops, and 5mm at sides.
Turning Circle: 0m
Weapon: 2 Hardox snowplow-like scoops that can move slightly vertically, like Behemoth's, so I get good pushing power, but 0mm ground clearance at front and back.
Srimech: Invertible
Strengths: Super-reliable and fast. Now more powerful.
Weaknesses: No real offensive weapon.

[kodster]

That would be borderline overweight, to be honest...and for heaven's sake, read up on Lithium-Ion batteries for combat robots, before trying to use them in vapourbots. :P 9 A123 packs do not total 48v, more like 29.7v :P

[corsair_lightning]

Minesweeper 1.1
Weight: 100kg
Shape: Tornado (S7)
Colour: Gold on top and bottom, Silver on the sides, with MINESWEEPER written on the sides in red. The scoops are bronze.
Dimensions: 90cm x 85cm x 25cm
Drive: 4x 24v S28-400 Magmotors, powered by 7x A123 Battlepacks. The motors power all 4 wheels via a belt system, and I should get about an average of 18hp from them.
Locomotion: 4 Titanium/Vanadium alloy wheels with Vulkanized rubber tyres.
Armour: 5.5mm Hardox monocoque, underneath that is 1cm of vulkanized rubber to absorb impacts.
Speed: 20mph
Ground Clearance: 0mm at front and back due to scoops, and 5mm at sides.
Turning Circle: 0m
Weapon: 2 Hardox snowplow-like scoops that can move slightly vertically, like Behemoth's, so I get good pushing power, but 0mm ground clearance at front and back.
Srimech: Invertible
Strengths: Super-reliable and fast. Now more powerful.
Weaknesses: No real offensive weapon.

[kodster]

Sigh...

Right. Let me explain a bit about Li-Ion packs, then, since you seem a bit lazy to check the thread Shane posted a while back. I won't explain everything, just the basics for vapourbots.

Lithium-Ion cells are a relatively new discovery in combat robotics, so people aren't too keen to use them. They have advantages over NiCads and NiMH in that they have a higher voltage count. The Li-Ion packs themselves give out 3.3-3.6 volts per pack (we take the base voltage, 3.3v), and weigh ~700g. This means that you would not be able to run your vapourbot's motors in increments of 1.2v as you would with NiCads or NiMH packs. Instead, you would run them near recommended voltages for the motors. In the case of the S28-400 Magmotor, that would be 24v.

24v / 3.3v = 7.2727

Since we can't use 7.2727 packs (lol), we have to round that off to the nearest whole number. Thus you would need 7 packs.

3.3v x 7 = 23.1v

So, you would run your motors at 23.1v.

Do you understand now, Mark? Show me you understand by doing what I just did with the S28-400s, with LEM130s. (recommended voltage for LEM130s is 36v, according to the manufacturers' page) I'm sure you could do it.

[joey_picus]

Someone may correct me if I'm wrong, but LEM170s are only really good for weapon motors as they only easily spin one direction. Not good for drive motors, Mark.

I'm correcting you as I believe you are wrong