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No Batteries in there Paul, it cannot drive, or spin up :P
Seriously think its just over the limit, Id drop one of those LEM130s off the weapon, 27KG is light enough for a LEM130, two of them is a waste of weight. Switch the drives to S28-400 magmotors, and it should put you into the clear.
WRT the KE calculation, if they are all on the same shaft, the KE is combined together. So Pauls figure is correct.
Forget what I said, Aaron and Paul are absolutely right, when 3 drums together become one wider drum (which is basically what is happening here), 0,5*m*v^2 becomes 0,5*3*m*v^2 and the result (the kinetic energy) is multiplied by 3.
Andre, can you summerize what your robot will look like and put the stats in a schematic like Paul did?
That makes it easier for us to give a good judgement on the machine.
Andre, these are the old Velociraptors Fanfic Tournaments (one of the biggest tournaments we ever had) entry requirements.
This information is required for Vapourbots (you can give more if you want):
Weight
Shape
Dimensions (l x w x h)
Speed
Locomotion (mention what its made of, eg: if its wheels, are they foam filled?)
Ground Clearance
Armour
Weaponry
Srimech
At least one strength
At least one weakness
Mention all those points as detailed as you can, please do add whats driving your machine (the LEMs perhaps), get your facts straight, and you have yourself a vapour!
Name: Sir Spinalot
Shape: Circle (Like The Revolutionist)
Dimensions: 50cm X 50cm X 50cm
Speed: 20mph
Locomtion: 2 Lem300 motors
Ground Clearance: 0
Armour: 6mm titanium armor
Weaponry: Titanium Spinning Bar 12x10x5 with 10 titanium teeth 5x5x5 that spins 1000 RPM with 2 lem300 motors.
Srimech: Yes a self-right bar.
Strength: Powerful Weapon
Weakness: Lack Of Traction
(Message edited by Bartmanhomer on February 14, 2008)
Sir Spinalot
This is slowly turning into a good first vapourbot. The basics are there but there is much more you could expand on. The way I see it, the more information you pack in, the easier it is for the writer to understand how it will perform.
First of all, you may be surprised how large heavyweight robots actually are. I would suggest making the diameter somewhere between 700mm - 1000mm. The robot does not need to be that tall either. For this, I€™d suggest around 200mm in height. Bear in mind the diameter of your motors will mean few robots are under 150mm tall.
Which brings me onto the next problem - LEM300 motors do not exist. The Lynch Motor Company or LEMCO produce 3 motors that I am aware of - the LEM130, the LEM170 and the LEM200. Although obviously correct me if I am wrong here. I believe you would probably be referring to LEM130 motors. These would be a good choice for drive as they are incredible light for such a powerful motor. At 24v they give similar performance to a Bosch 750, which weight twice as much. At 36v you can get huge amounts of power out of them, but being as you are circular in shape I€™d stick too just 24v. Alternatively, you could also look at Magmotors, particularly the S28-400.
Ground clearance is something which is usually difficult to grasp for newcomers. 0mm effectively means that you cannot move. 0mm clearance is only really capable by using wedge that run flush to the ground, whether these are fixed or skirted. And being as your robot has neither of these, it will require higher. High ground clearance isn€™t such a bad thing. Being as you have the spinner providing gyroscopic forces and a self-righting bar, it isn€™t much of a problem anyway. With spinners, it is also likely that debris will be caused on the arena floor, which you would have to drive over. Therefore you would probably need at least 8mm of clearance, and I€™d suggest 10mm to be safe.
For the weapon you need a few more details. For a start it needs to be a lot bigger so it can actually hit opponents. Secondly, how do you fit 10 teeth on to a bar? Again you€™ll need to change the motors, as with the drive motors. For the self-righting bar, where is it positioned and what powers it?
If you can fix all of this stuff, then a few more details can be added. Good stuff so far though! :)
This sounds like a Tornado Mer to me. :)
With a spinning bar, where is your srimechbar located that it would not get hit by the spinning bar if you try to use it?
Well my weapon for the spinning bar is in the middle of the body and the srimechbar is in the top.
A bit like Icewave then?