I knew that, its just I couldnt see such an idea being effective without real weight in the ends.
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I knew that, its just I couldnt see such an idea being effective without real weight in the ends.
How much weight would you recommend? Baring in mind that it cant have too much, otherwise it wont lift up.
If its equal on both ends, it should lift up rather nicely...I think those motors will be more than enough to ensure it lifts up, so Id pad it up to the 13.6kg limit, so...1.8 extra kg per end?
Hey Chris, You made a thwack bot ? Is it anything like my Antweight, FIN ? Look him up on youtube, or on my website
I like Thwackbots :)
Wrangulator is perfectly feasible, in fact there are many reallife feathers with about the same specs (Bonx and Batterbot for example). Even with 4mm of hardox they have plenty weight left.
On the others I would need more stats on the weapon just like Joey says. What bottle, what ram what mechanism and so forth.
I will be at the UK champs this weekend so I wont be able to read the forum till im back in Belgium or Holland.
Say...
Is it possible to have a lightweight (25kg) with 3.25mm Hardox armour and LEM130 drive? :)
yes
Okey dokey then.
*goes to drawing board to make a new clusterbot* :)
In the past week Ive made about 6 vapours!!
Is there anything wrong with this one?
http://strickenone.proboards99.com/index.cgi?action=display&board=teamww&thread=229&p age=1http://strickenone.proboards99.com/i...teamww&thread= 229&page=1
Is the self righter part of a section that doesnt spin? I cant really see how itd work otherwise...
Incidentally, if you got it to spin fast enough you could get it to appear white :P
Would it actually matter if the self-righter did spin?
Well, it would have to be electrically connected to the batteries in some way, which means either wires or some sort of friction ring contact system. If you use the former, the wires break after a few spins due to twisting, and if the latter, the friction from the contacts rubbing against the ring causes the entire robot to catch fire...
...so yeah, having the self righter spin is not advisable :P
ffffff>Completely off topic, but one of my favourite Jonathan Pearce quotes ever is just before King B3 vs. Atomic in series 4: It has a problem...they know it has a problem...it catches fire... :P
(Message edited by joeychevron on May 24, 2008)
first off, too heavy, second off, ur spin up time is off, far too slow, you have 30hp there shifting approx 40% of ur total weight (40kg of 100kg) thatll be upto speed, full speed in less than a sec, but u really dont need 2 eteks
and it seriously matters if ur selfrighter spins if its not balanced itll spin out of control
The self-righter tends to be attached to the shell, and when the shell spins, so does the self-righter, but when flipped, the shell naturately stops, and so then the roboteer self-rights the robot - its a design used by AJ with Psyclone, a very different version of PsycloniZer.
If I were you Liam, Id remove a E-Tek and replace it with 2 x LEM130 at 36V - weigh together 6kg, and produce 18hp. True the E-Teks offer more power (12hp more actually) but weight 30kg together, and I think that 2 E-Teks, let alone 1 is overkill.
Better still, go for a LEM200 at 48V, 25hp, 11kg - pure power.
Better still, Go petrol engine.
Paul, you do know how much battery power that Lynch Motors suck up, right?
I dont know, but it doesnt suck up as much as Mark does :proud: *Points out to Marks legal team that I said does becuase Im yet to know if hell be banned*
I wasnt aware Mark ran on batteries...
On a relevant note, does the 100kg with gas rule extend to petrol as well?
30 kg for eteks? LEM200 produce 25hp? since when, the etek and LEM 200 are pretty much the same preformance wise,
Etek is 11kg and produce 15HP on 48v
LEM200 is 11kg and produce wait for it 15HP on 48v
the LEM2X2 produces 25hp but that weighs something like 25KG
There are no consumable rules anymore, you are only allowed to weigh 100kg incl. CO2 gas or petrol.
For heavies the amount of fuel you are allowed to carry is 500ml/17 fluid ounces.
Right...would you still be able to get comparable power out of a petrol weapon drive for less weight?
(I know Typhoon had practical problems, but purely looking at the stats)
Power to weight wise for robots you cant beat internal combustion engines. If you only look at stats.
Given Liam decided on building an FBS, I decided on doing the same thing, and since Ive been building many flippers, rammers and spinner-killers, I thought Id design an FBS that cuold stop anything from rammers to flippers. Ill point you to... (Joke is intended :wink:)
KOM-PASSED
€ WEIGHT: 100kg.
€ ARMOUR: 6mm Hardox on the rear, top, front and sides. 4mm Titanium on the base. Inside, I have 5cm of Vulkanised rubber to make sure its good when facing other spinners and everything inside is bolted in place using Ti/V bolts to prevent things from breaking.
€ SHAPE: A cylinder shape, with a slightly pointed top.
€ MOTORS: 2 x Bosch 750w at 24V = 2HP
€ LOCOMOTION: 4 wet Go-Kart Wheels.
€ DIMENSIONS: (L) 100CM (H) 15CM (W) 100CM
€ COLOUR: The body around the edge is black, and on the top is an arrow facing forward, coloured red.
€ WEAPONRY: A 45kg shell - the shell is 37kg, but the 8 teeth weigh 1kg each. The shell rotates using 2 x LEM130€™s at 36V, and using a gear reduction of 1.13:1, it can rotate up to 3200rpm max. It can produce 230kj at maximum revolution (takes around 3.5 seconds to do so) but is lethal in 1 second, when it€™ll do 1600rpm, and when it generates 115kj per blow. I can lock the speed to 1600rpm if things get worrying. The teeth on Kom-Passed are Hardox teeth, blunted but with curved hooks attached to form a T shape. There are 4 x 10cm long teeth on the North, South, East and West sides, and in between them are 4 x 5cm long teeth, each tooth is mounted 2mm from the ground to provide protection.
€ SPEED: 20mph
€ GROUND CLEARANCE: 8mm all around, but since the teeth on all sides are 2mm off the ground, anything that comes into contact will be slammed away.
€ STRENGTH: Good armour and an awesome weapon.
€ WEAKNESS: No self-righter.
Tell me if theres something wrong.
Well the Hardox Shell alone is already 60kg, not 37, and thats without the teeth.
Adding vulkanised rubber as shockmouning on a spinning surface is a bad idea. The friction that that will generate can cause your robot to burn.
OK - The shell is changed to 1cm of Titanium - I think thats 37kg in weight - and the rubber is removed, and replaced with Titanium foam to be placed around the electrics and not the shell.
The shell in Titanium alloy of 1 cm is 33-34kg depending on the alloy (you dont want to use pure Ti for that).
What exactly would Ti foam do in your application? I only know of Ti foam for use in the medical community as part of artificial bones and joints, because it is lighter than solid Ti and still very strong. Not for its bounce. If it is for schockmounting, wouldnt PU foam be a lot easier?
I was thinking that Ti foam would be rigid...
And you would be right.
Actually I made a mistake in calulation since youve made the shell thicker the weight of the shell is higher than the 34kg i calulated before. I wrote 1 cm but calculated 6mm like the hardox shell.
So here it is correctly i hope. Feel free to check the numbers.
side:
100cm diameter * Pi * 15cm height * 1cm wallthickness= 4710cm3 = 4.7dm3
Top:
50cm radius * 50cm radius * Pi * 1cm wallthickness = 7850cm3 = 7.8dm3
7.8 + 4.7 = 12.5 dm3
4.2kg/dm3 Ti * 12.5dm3 = 52.5kg
...this is why I dont design big spinners. :P
I do have another question (cue groaning); Would it be practical to use carbon fibre honeycomb sheets (like this: http://www.robotcombat.com/products/carbon_fiber_sandwich_composite_sheets.htmlhttp://www.robotcombat.com/products/...te_sheets.html ) as armour, provided you supported it adequately?
If you dont mind having huge gashes in them from spinners, you could.
i think 3.2 hardox is as good as anything available. you dont need it any thicker and placed in the right places instead of all over the robot you would save loads of weight. rubber mounted ali on top for hammers and axes and hardox outer shell would be very good. you will be surprised what you can do if your robot isnt all 10mm ti and 10mm hardox.
http://strickenone.proboards99.com/index.cgi?board=teamww&action=display&thread=268http://strickenone.proboards99.com/i...isplay&thread= 268
Mighta been delirious while designing this one, and therell be MORE setups soon
I agree, although 3.2mm Hardox 450 will not keep everything out (Tiberius comes to mind).
Steve had something called Chameleon once, if I recall...and if the tyres are covered, how can some setups be invertible? For that matter, how can tracks have tyres? :P
If Steve did have chameleon Ill rename it, and what I mean is there are removal armour panels over the wheels
But you said it had tracks...
Sorry, having a slow day today, I meant tracks
Interceptor: http://strickenone.proboards99.com/index.cgi?board=chevhw&action=display&thread=158&p age=1http://strickenone.proboards99.com/i...isplay&thread= 158&page=1
This is not so much an is it in weight/realistic post as it is how could I make it more effective since Ive looked at it and it...doesnt look that good, to be honest.
So, how could I make it more effective? :proud:
Blood Eagle
Weight: 100kg
Shape: A very low wedge with side skirts
Dimensions: 94cm X 75cm X 42cm with the beak closed, and 94 X 75 X 60 if raised
Armour: 7mm Titanium
Power: 2 X 24V S28-400s powered by 4 24V NiCad BattlePacks
Wheels: 2 X vulkalon rubber tyres
Top Speed: 19 mph
Ground Clearence: 0mm on the front and sides due to Firestorm-like blade and side skirts and 2.1mm on the back
Turning Circle: Yup, its zero.
Weapons: A very nasty, diamond edged crushing beak (ala Razer) powered by a Vivoil Hydraulic Pump, with 3800PSI of force. There is also several Mute-style barbs to trap other robots while crushing them.
Srimech: Razer-Style Arms on sides powered by steel cables and rounded back to stop it from getting beached.
Strengths: Extremely Fast Srimech, Devastating and Lethal Weapon, Almost Impossible to get underneath, Good Traction
Weaknesses: None- Almost Invincible
OK, so.... is there anything wrong with THIS?