well mine is a 100kg running at 24v so whats the math there?
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well mine is a 100kg running at 24v so whats the math there?
it all depends how far the different pivot points are from one another
I'm guessing the closer both pivot points are, the more power?
DragonsClaw from a few years ago
http://www.youtube.com/watch?v=kc6PmRQn_no
Is it closer or further to the pivot point that gives more power?
the closer the head of the actuator is to the tip the more force you will end up with
drumrolls looking good jamie...
going to wrap it in hardox like the old one?
Im suprised your drums so well balanced with 3 teeth being aranged in that orientation across the length of the drum...i.e. callums drum wasnt ballanced due to having one tooth either side on the oposing angles...
you'd have to have an extremly well made mechanism, linkages and not to mention a really good actuator to get good forces in a horizontal crusher.
my new ones just about met its match at 15mm hdpe, it'll crush it but only so far in before it stops. something which the old horizontal pinsor never could have managed, that wouldn't have even gone through 5mm or so
jamie, i'd really suggest that you used the 800kg actuator on a vertical claw like mine cos youd get crazy power in that. but then the draw back is how yours is and how mine used to be it was easy as hell to drive up to a robot and grab hold of it, going to be difficult getting a robot to stay in my claw whilst it closes with both of us probabily moving about n that
Yeah I've still got the hardox armour for it. I need to re-weld a few bits where NST bent or broke them, but the problem there was that when I ground down the welds to tidy them up, I probably took a bit too much off and was left with quite a thin join. This time I'm going to weld them inside and out and not go as crazy with the grinder. Also going to cut a piece of steel to go round the back (so that the two pieces of side armour can get welded together to form one complete layer) and then cut and weld some bits on to make a hinge for the rear wedge. No more 'heavy-duty' hinges from B&Q :proud:Quote:
Originally Posted by mr_turbulence
The drum's not balanced yet, so it vibrates like hell! Doesn't seem as bad as Calum's one did though, I think the three ring teeth even things out more than the two solid blocks of steel. But I reckon I can get it pretty well balanced with some careful grinding work.
I was actually considering making the mechanism interchangeable between horizontal claws and a vertical crusher (with a set of jaws similar to Sgt. Bash's on a FW scale) but then you put posts and pictures up saying that you were going with a vertical crusher for Pinsor 2, and I didn't want to seem like I was copying you again :lol:Quote:
Originally Posted by calumco
I'll stick with the horizontal for now and see how it goes at Edinburgh, then take things from there. I made a prototype vertical crusher a few years ago (wood chassis and polycarb claw) and it went through a cardboard box with ease. It was an amazing sense of power at your fingertips, even from that, and as a result I'll always favour vertical crushers :)
I would like to do a vertical crusher but I would needs more powerful actuator for that
But horizontal ones do look dam good
I would probably run a vertical eventually but I would need it to either be investable or have a srimec
haha, jamie i really wouldn't mind where was your actuator from btw? got mine off ebay agessss ago, i was lucky to just randomly stumble on it.
i was going to do a crusher out of a 1.5 ton car jack mechanism but they're too heavy so it woulda been near impossible to get that in the weight
Mine was from team mayhem and it was originally used in Mr Happy
I'm always looking for more powerful ones though if anyone has any spare
Jamie, you'll probably find that it's the relay that's gone on the battle switch board. Had a similar situation a while back. All I did was take another relay and piggy back solder the connections onto the original board to see if it was goosed completely. Usually if the LED changes from flashing to solid etc when activated it is still good
Good shout Gary, I've got a fair few spare relays kicking about that I can try that with. I thought it might be the relay since the green light was still on but having not used them before, I couldn't be sure.
Calum, it's an Okin Deltadrive I bought the actuator off Alex Marler a few years ago now but I have no idea where he got it (eBay perhaps). I looked at changing the motor to a Speed 900 for more speed/power but couldn't see a way of doing it without risking messing up the gearbox.
Update
Finally some progress on Carcinus :)
It was partly done before the champs but as I was rushing it I never took any pictures, so it's now gone from a pile of parts to something that looks close to completion:
http://i31.photobucket.com/albums/c3.../c2_build8.jpg
Pretty basic setup. Two 12V drill motors controlled by Electronize 15A speedos, an Electronize switcher controlling the actuator and everything powered by two 9.6V, 3700mAh Nimh packs.
There's still a bit of work needing done to the main claw mechanism, which I hope to press on with tomorrow. I think I've hit a mental block with it; I know what needs to be done on it but just can't be bothered with the hassle of cutting and drilling a bunch of 20mm Nylon and 5mm steel. But ideally I will get through most of it tomorrow. The mechanism is going to be the opposite of the previous model - i.e the claws will close when the actuator retracts. I'm not sure if that method has any advantages or disadvantages compared to the push-to-close mechanism, but there will be a few more linkages involved. It just happens to be the mechanism which is more suited to this design.
In the meantime, it's started to get a bit of personality as I incorporated the power LEDs into some crab eyes:
http://i31.photobucket.com/albums/c3...c2_build10.jpg
Gimmicky more than anything but I like it :)
Started forming the armour for it too:
http://i31.photobucket.com/albums/c3...c2_build13.jpg
8mm thick HDPE bent to shape using a heat gun. The original plan was to stick quite religiously to the octagonal(ish) shape of the base plate, but as I was bending it, it was easier just to let the pieces bend over a larger radius. So there's a bit of an air gap between the armour and the internals, which is always a good thing. It was also going to wrap right around at the back but it was easier to bolt it on at the edges, so the gap between the panels (where the linear actuator mount is) will play host to some sort of chain flail that will cause deadly paint scratches to any opponent when the robot is in a full-body spin! 8)
And finally, placing the claws to get an idea of how it will look:
http://i31.photobucket.com/albums/c3...c2_build14.jpg
I'm leaving the armour clamped overnight so that it cools in the correct position. With the curvy sides, it should make it harder for a spinner to grab hold - compared to the boxy old chassis - and it's also reminding me a little bit of The Stag, or its featherweight replica Staglet (for those of you who remember that). Overall, it's definitely a massive improvement on the first incarnation.
More work to come tomorrow; fingers crossed for getting some proper claw actuation!
Looks great :D
looking nice jamie, love to fight that with mine when we're both finished :) once my permant hangovers worn off from download i really wana crack on with mine and get it all finished off, hopefuly have mine driving and everything in a week or so (Y)
we need to have a 3 way clawed bot fight once all ours are done :)
Should be more worried about the flail than the claws I think, from what i've seen Carcinus is either in a full body spin or in the pit :lol:
Very true, very true 8)
Not sure if it'll have a flail on it for this event, probably just a fail.
Then again, might grab some chain from B&Q tomorrow, or weld something up from excess turbine base plate :)
I'm hoping the turbine plates will get a better testing at this event than the champs, see if they're worthy of a place in robotics :D .
Daiske II is looking like it will have a flail of sorts too, more sort of rotating hammers/self righting bolts/shafts-for-the-wheels-are-too-short-and-need-bolts-to-hold-them-in on the side, but at the speed it moves at they should pack a fair punch. If Carcinus can get past LF then is it not the only FW with a weapon? Might have a chance of a victory in a battle or two :wink:
Oh yeah it'll win. It'll win the let's-see-who-can-drive-in-the-pit-the-quickest-after-activate-has-been-called side event :roll:
Those exist?! Oh, cool, I may have a chance at winning something if I ever build a darn bot! This is brilliant news.Quote:
Originally Posted by k_c_r
I can just picture the let's-see-who-can-drive-in-the-pit-the-quickest-after-activate-has-been-called trophy on my shelf. 8)
We'll see about that! :)Quote:
Originally Posted by Relentless
Update
Well that's pretty much everything done for Edinburgh on Sunday. Just finished wiring up Carcinus fifteen minutes ago (took twice as long as expected) and it's currently getting a trickle charge. Claws are just fixed in place as I left all the grinding and welding that needed done for today, but typically today it poured non-stop which wasn't ideal for using power tools unprotected in the garden. So the linkage mechanism will have to wait for another day.
Drumroll's armour also fell victim to the weather so I couldn't get that repaired. It'll just be running semi-naked as a result. It seems to be driving well though, excellent grip from the Banebots wheels, although they won't last long. Had a drill motor crap out on me during testing but thankfully after a bit of fiddling and several choice swear words, it was good to go again.
Bit of a short random update I know, I should probably go to bed. Leaving tomorrow to help with arena set-up etc so those of you who are going, I'll see you there :)
Update
Well Edinburgh has been and gone and the robots did alright. There were only three feather fights on the day; Drumroll won one, lost one side of drive in another and got beat up by BattleAxe in the third. Carcinus had to be pulled from the first fight (tx/rx problems) but I think it did fairly well in its other battles, coming second in one and managing to avoid the pit all weekend!
Haven't yet taken Drumroll apart to assess the damage, but I reckon it's just a bent baseplate. Carcinus was down to one wheel in its final fight so I'll also need to have a look at that but as far as I'm aware, it's got no other problems.
Picked up some low pressure pneumatic bits at the weekend too, so I'm now taking my first steps to joining that unruly flipper brigade!
They came along with a robot chassis too but I don't like the size and design of it so I'm going to build a chassis from scratch. It's going to be a replica of a Robot Wars machine but I'm not saying which one yet, you'll just have to guess :wink:
A couple of basic pics:
[attachment=1:5s1xp75e]DSCN6183.JPG[/attachment:5s1xp75e]
[attachment=0:5s1xp75e]DSCN6184.JPG[/attachment:5s1xp75e]
One of the CO2 bottles is representing a buffer tank, and the ram will probably be swapped out for a larger one. I think its currently 25mm bore x 50mm stroke and weighs 1.75kg. I saw an aluminium one on eBay (63mm x 160mm) that I thought would be lighter since it wasn't steel but it is 2.43kg apparently, so I might look at a smaller 50mm x 100mm ram as it should be a wee bit lighter. The design is fairly flexible with regard to ram dimensions so that's not something I have to worry about.
It'll probably be on the back-burner for a few weeks while I acquire parts for it and sort the design. In the meantime work is going to start on an antweight for the AWS in July; decided to make a miniature version of Eric, probably called EricA :)
Also planning to make some headway on the beetle this weekend; I've got enough parts to throw together a rolling chassis so aiming to get that running by Sunday.
is Erica going to urinate all over the floor the same way Eric does? :lol:
Well, I want it to be as realistic as possible :rofl:
Once I work out what that part is actually called I think if I fix it that is a better option than you building in flaws to your new machine :proud:
looking good so far :) i'm going to guess mini chaos 2 judging by current shape. i've got a 50mm bore, 100mm stroke norgren ram i could sell you, with rear and front pivot attachments. if you're interested i'll weigh it for you :)
But building flaws into my machines is somewhat of a speciality :proud:Quote:
a better option than you building in flaws to your new machine
Cheers Jonny, I'm not going to confirm or deny any guesses though 8)
I'm waiting to hear back on a couple of options cylinder-wise but if you could weigh it and let me know (possibly overall dimensions too?) that'd be fab thanks :)
Flipper looks great, nice to see those with spinners turning towards the more harmless robot variety :lol:
Facet? (suggestion by Kody, not myself ;P)
(I do have a 40 x 160mm 10 bar cylinder that might be of use to you with pivots, clevis things, and other stuff?)
Sweet... A mini granny's revenge :) lol... A mini chaos 2 would be pimp.... Dont go putting 1000psi through a 10 bar cylinder mate, stick with the one you got or speak to Kenny or Tom Armitage nicely lol
Haha, nah don't worry. I'm sticking with low pressure 10 bar stuff for starting out. Negotiating a Trev reg for one of the bottles :)
Some interesting and fun guesses being made.
And I'm still a spinner lover at heart, just fancy a new challenge :wink:
Joey, that cylinder sounds like a good mix between bore and stroke that could fit the design quite well. Is it something you'd consider selling? If so, any chance you could weigh it pretty please? :kiss:
Jamie - it is, being as it's 3:25 in the morning I'll have to weigh it tomorrow, but get on MSN if you can then and we can discuss pricing ^^
flippers are crap Jamie, I'm disappointed...... :sad:
So am I :lol:
Although I give you licence to shoot me or something if I ever revert to building a box!
It will complete the clan nicely as well once sat alongside a spinner, a grabber/crusher and (eventually) an axe 8)
First I try to build a flipper, then you want to build one. Ram envy is a terrible thing...
Nice to see that layout though - I've always wanted to see a Steg 2 replica...
...which is what yours will look like when you run out of space! :lol:
Update
Wow, for once I actually manage to do what I say I'm gonna do!Quote:
Originally Posted by k_c_r
Introducing Paws:
http://i31.photobucket.com/albums/c3...d/DSCN6196.jpg
http://i31.photobucket.com/albums/c3...d/DSCN6197.jpg
The current setup is as follows:
4 x MFA 15:1 motors from Technobots with
4 x Banebots 60mm diameter wheels
1 x Hyperion 3S lipo pack (11.1V)
1 x Scorpion XL
The XL is just a temporary controller until I get something more beetle-specific. Running on that setup, it is pretty nippy for its size. Currently weighs 650g which leaves just over half the weight allowance for the rest of the chassis/armour and its weapon, so it's gonna be tight! May have to look at ditching two motors and running belt drives but I'll worry about that if the issue arises.
A short video of it driving about:
http://www.youtube.com/watch?v=-VxmSXgBx7Q
And I think some Loctite may be in order :lame:
http://i31.photobucket.com/albums/c3...d/DSCN6198.jpg
As with my LP flipper, this is going to be a replica of a popular Robot Wars heavyweight. See if you can guess this time; the name's probably a bit of a giveaway :)
And just to say, driving it about is so much fun 8)
Pussycat?