How could I Improve pt 2

3 kgs for each flipper

You would need a bigger width to fit two 3kg CO2 tanks between the wheels. Go for at least 70cm for width, or something over. You dont have to immediately take a suggestion, though, you can say something like 75cm or 80cm or whatever, as long as it isnt too wide. :P

I will have 2.5 kg bottles and the width will be 65

Much better. :)

Shape: Rectangle.

A rectangle is a 2D shape. You mean a box, right? :proud:

I mean A Box!

lol, yes, good. :P

Another thing is your motivation. IIRC, you cant have a skid steer system with 6 wheels, and with 6 wheels, although youll have a good speed and torque, you wont be able to manoeuvre around as well as machines with 2 or 4 wheels. I would say go for 4 wheels since you can bring your weapon into play easier, but its up to you. Do you want to keep your 6 wheels?

(Message edited by kodster on July 29, 2008)

ok, I guess 4 wheels is good

Mkay. Looks like you have a good first vapourbot, there. I will re-open your section on ZED so you can post it. Just please try not to fly off the handle like you did on here before. :)

thnx Kody

No problem. Im glad youre accepting advice. :)

In case you forgot, heres the link so you can re-register: http://strickenone.proboards99.com/http://strickenone.proboards99.com/

thanks! How do I post my robot on there?

When you register, I shall open your section up so you can post there.

Whats your team name? (thatll be the section title)

my team name is Team Animatronic Animals

Mkay.

For reference, could you please post your fixed stats here first?

I will do it later and I am logging off for now, BYE!

Kody:

Hardox = 7.8kg/dm3
Ti=4,5kg/dm3

so if 4mm hardox on a robot is 60kg, 7mm Ti is 61kg.

So your not saving weight, it gets heavier.

That is not a bad attempt at all Ben. If you follow Kodys advice you should have a pretty solid vapourbot there. However, you shouldnt listen to Kody regarding the wheels. :lame: The number of wheels you have, as far as I am aware, does not effect the speed or torque of your robot. Gearing effects that. I also dont agree with this more wheels = less manouverability idea. We have all seen Chaos 2 (2WD), Tornado (4WD) and Storm II (6WD) turn directly on the spot - so where did this idea stem from? The only benefit I can see of having less wheels is that it reduces the weight. Im probably wrong, but thats what I think anyway.

so what armour do you suggest Leo
and i think i will change back to 6 wheel drive

4WD and 6WD machines have more friction while turning on the spot and less direct drive, if that makes any sense, 2WD machines turn more efficiently, pretty much enhancing their manouverability

which is exactly why you only see 2WD twackbots, 2WD makes spinning on the spot alot more smoothly

i dont want to spin on the spot i just want a 0 turning circle
Oops! i almost forgot the GC is 1mm on the body and 0mm at the front of the flipper

i dont want to spin on the spot i just want a 0 turning circle
Oops! i almost forgot the GC is 1mm on the body and 0mm at the front of the flipper

Err...two problems with that.

1: Having a 0 turning circle without being able to spin on the spot is impossible, because they are the same thing.

2: If your GC is only 1mm, you wont really be able to move.

quote:

i dont want to spin on the spot i just want a 0 turning circle

that made me laugh slightly, no offense intended

0 turning circle = turning on the spot

you can have 0 turning circle with any amount of wheels you want, be it 2WD, 4WD, 6WD. The key difference is that with 2WD you can turn QUICKER, with 6WD however, you have more traction and can push better. 4WD is good for both pushing (not as good as 6WD) and turning (not as good as 2WD)

so, what will it be Ben, a 6WD robot with lotsa push or a 4WD robot with better agility?

Damnit, I keep forgetting Hardox and titanium densities. :lame:

Hold everything Martijn...isnt that conflicting with what AJ said about Chaos 2, Tornado and Storm 2?

6WD
3MM GC
4MM Ti armour

quote:

Hold everything Martijn...isnt that conflicting with what AJ said about Chaos 2, Tornado and Storm 2?

no it is not, ALL 3 turn on the spot, only Chaos 2 does so with less friction and therefor more smoothly, and quicker if all 3 would have the same motors and gearing

EDIT: as a matter of fact, both AJ AND me are completely right in their posts, all variants can turn on the spot, 2WD does so with more agility/quicker, 6WD does so more slowly and with lotsa friction

(Message edited by MajinB on July 29, 2008)

Provided the motors and gearing can conquer the friction of the wheels you can. What most 6wd robots do is make the middle pair of wheels a few mm larger so it eases the turning.

6WD are pushers most of the time, if your motors cant even conquer that friction it wouldnt be much of a pusher :proud:

but yes, youre right, but am I right in thinking that with larger wheels in the middle youre traction will decrease?

Not really no.

You say it wouldnt be much of a pusher, but have you ever thought about the amount of battery power you waste just by trying to turn on a 6wd robot?

4wd should be a good compromise

revised stats:

Name: Robo-Platypus
Shape: A Box with a flipper at the front
Colour: Red with a picture of a platypus on top facing the rear, the tail covers the flipper
Speed: 15MPH
Weight: 100KG
Armour: 4MM Titanium
Drive: 2 C40-300 Magmotors @ 36V
Power: 6 NiCad Battlepacks @ 36V
Locomotion: 4 Wheels that just poke through the top and bottom of the robot
Ground Clearance: 3MM, 0 at the front of the flipper
Turning Circle: 0
Weaponry: A rear-hinged flipper powered by a 80X100 ram at 750 PSI, powered by a 2.5KG Co2 tank, the flipper also has a built-in front-hinged flipper powered by an identical ram and runs off an identical Co2 tank , the first flipper is 40X30X1 and the other is 20X15X1 and is exactly in the middle of the other flipper
Srimech: Invertable and the flipper can right it
Strengths: Powerful flippers, Fast, Invertable, Unique weapon
Weaknesses: May be hard to control

OOPS! made a mistake


Name: Robo-Platypus
Shape: A Box with a flipper at the front
Colour: Red with a picture of a platypus on top facing the rear, the tail covers the flipper
Speed: 15MPH
Weight: 100KG
Armour: 4MM Titanium
Drive: 2 C40-300 Magmotors @ 36V
Power: 6 NiCad Battlepacks @ 36V
Locomotion: 4 Wheels that just poke through the top and bottom of the robot
Ground Clearance: 3MM, 0 at the front of the flipper
Turning Circle: 0
Size: 100X65X25
Weaponry: A rear-hinged flipper powered by a 80X100 ram at 750 PSI, powered by a 2.5KG Co2 tank, the flipper also has a built-in front-hinged flipper powered by an identical ram and runs off an identical Co2 tank , the first flipper is 40X30X1 and the other is 20X15X1 and is exactly in the middle of the other flipper
Srimech: Invertable and the flipper can right it
Strengths: Powerful flippers, Fast, Invertable, Unique weapon
Weaknesses: May be hard to control


Seeing as Robo-Platypus was such a success here€™s....


Robo-Aardvark
Name: Robo-Aardvark
Shape: A box with sloped sides (that does not include the front and back)
Colour: Light blue with the picture of an aardvark on the top
Speed: 10MPH
Weight: 100KG
Armour: 4MM Titanium
Motors: 2 Team Wyachi TWM3s @ 36V
Power: 7 NiCad Battlepacks @ 36V
Locomotion: 4 wheels with a vulkalon coating
Ground Clearance: 4MM
Turning Circle: 0
Size: 90X55X45
Weaponry: 1) A Rear hinged flipper powered by 2 80X140 pneumatic rams running of a 3KG tank
2) A 20KG vertical fly wheel running at 2500RPM inside the flipper
powered by a perm 132, it has 16 2CM teeth
Srimech: the flipper
Strengths: Powerful weapons, Weapons synergy, Both weapons able to perform OOTA€™S
Weaknesses: Thin armour, Quite slow

Ben, is there much point in having 2 flipper systems on your machine?

I would scrap the forward hinged system and put the weight saved to better use (for example the 4mm titanium armour)

And 3mm ground clearance is too low

One flip and you will rip your own flipperarm off

Paul, I didnt want to say this in Kodys tournament but Nitrogen is not filled on weight but on pressure. So 2x 1,5kg Nitrogen makes no sense. Under FRA rules (and I hope you guys use those pneumatic rules because the RFL rules are lethal, Im amazed no one died there yet) the main bottles are only allowed a maximum of 1000psi.

CO2 is liquid inside the bottles, and therefore those are weighed since pressure is too variable.

I wasnt aware you weigh Nitrogen based on pressure. If so, its at 1000psi.

You still need to lower the pressure you can exert through, or elsequote:

One flip and you will rip your own flipperarm off

The force of flips are now 1300kg at the tips.

(Message edited by paulc on July 31, 2008)

I guess thats alright...

Leo, how many rams do some of the flippers nowadays (Iron Awe 5, Dantomkia, Bigger Brother) use? 1 or 2?

They use one.