happy now?
http://i947.photobucket.com/albums/a...uin/006-20.jpg
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Well that's one photo.......
What dimensions is it? Current weight?
its pretty small, but its 734g without the weapon, suports and some more armour
well Rockys going to be over weight (i mean REALLY over weight) it weighs 1150grams with out the drum and battery.....
Best get the drill out!
How heavy do you plan to make the drum?!Quote:
Originally Posted by Bodge Job
If I ever make a drum spinner beetleweight robot I'd aim for at least a quarter of the robot's weight in the weapon. I say that because Drumroll's drum was in the order of 4Kg, right? And it's brilliantly destructive, so I'd want no less than say... 300grams in the weapon.
I'm all talk and no build, though, lol.
The Blade on Spinza is around 300g and I'm right on the limit. 180 on the other hand has a 650g spinning weapon (so half!) but that's due to some act of God, I sure don't know how that was made possible.
yeh, i just weighed the drum, it weighs 800grams.... lol a tad over weight me thinks....
Yeah it was 4.2kg. Completely by accident though, I was expecting it to be more around the 3kg mark. Had to drill/cut lots of holes and take the second weapon motor out to fit the drum and not be overweight. But the power that thing packs made it worth it. Then Gary goes and sticks a big-ass brushless on it....... :lol:Quote:
Originally Posted by Relentless
180 is twise as small as your beetle , so less material less weight..Quote:
Originally Posted by PJ-27
8)Quote:
Then Gary goes and sticks a big-ass brushless on it
TBH I can't quite see how BW flippers are ever going to be effectiveQuote:
Originally Posted by harry hills
As much as I would like to build a BW Explosion, the weight of a Burkert vavle makes it near impossible
just don't use a burkert valve
im rigging up 2 servos to double my tourque.
also got a pair of 100:1 mfa motors for sale if anybosy wants em
My components alone weighed more than 650g, let alone with a chassis and wiring.Quote:
180 is twise as small as your beetle , so less material less weight..
I'll have to have a look at 180 when we have an event and see how you squeezed them all in.
I'm not aware of any other full-pressure rated valveQuote:
Originally Posted by jonny
took my lifter apart and made it into a thwack bot, all im saying is 75mm robochalange wheels, poundland hammer and some 12mm hdpe
you can see here,Quote:
Originally Posted by PJ-27
[attachment=1:rpy2nxsz]170785_10150399358340173_673470172_17122908_565142 4_o.jpg[/attachment:rpy2nxsz]
[attachment=0:rpy2nxsz]171440_10150404931320173_673470172_17219466_159429 1_o.jpg[/attachment:rpy2nxsz]
anyone using modded servos for drive?
me, see the video above
there any planned events for these yet?
there any planned events for these yet?
Is there an arena for these yet?
I think there waiting on the polycarbonate :uhoh:
Yeah, the polycarb is likely to cost in the order of £900, so it's on hold.
what thickness is required for beetleweights?
That's pants. Had a nice design for a beetle weight
Ordered some parts for a beetleweight and it's slowly coming together! Just waiting on the speed controller and I will be able to have something moving around.
I remember hearing someone suggest people donating cash towards the arena, I'd personally donate a few quid towards the cause. Wouldn't be much, but still.
what if we all stand well back and use binoculars?!
I was just wondering, what is classed as a walker in this weight class, and could there be a rule where, shuffle bots, have a weight advantage to? Because, I think it would introduce a larger range or robots, so it would be more interesting...
Rules for shuffle and walkerbots also apply to beetles. You're allowed 1 and a half times the weight for shufflers (4.5 pounds) and twice the weight for walkers (6 pounds).
Ok, that's seems reasonable.. And means I can still use the overweight drum I made...
hey, just wondering if anybody is up for a floor fight at portsmouth?
Is there any news on the arena?
I know there's not been much activity in this weight class resently, But I was thinking about the spinning weapon on rocky, and I calculated the joules of energy it stored using
http://www.teamcosmos.com/ke/ke.shtml
And it came to 75 joules with out the teeth, and I was wondering how this compared to other robots, I looked though various topics and searched the forum, but I couldn't find the KE of any other beetle weight robots, Im sure there was some some where, but I can't find it, so how does 75 joules compare? And how does it compare to other robots in other weight classes? Thanks
I got 5 dia x 0.5 at 15,000rpm give 9.4kj on 180 it says thats 9400 joules , crazy no wonder it dances
Wow that's a lot, I may have to change the gear ratio on mine so it's not so weak compared to that... I might lighten the drum, and stick a bigger brushless motor on it, as the one I've got is powerful but it doesn't spin very fast
I mentioned what I got from Spinza somewhere..............
Found it, 280 Joules and 6000 Foot Poundals.
One thing to bear in mind Alex is that drums generally have a lower kJ figure than most spinning discs or blades. This is due, in part, to the fact that most drums tend to be much smaller compared to discs. Kenny's disc on 180 is 5 (or 127mm), but you'd never see a 5 drum on a beetleweight as it would most likely be too big for the design and too heavy (even Drumroll's drum isn't even that large!). A drum's weight is also spread out over a wide distance whereas a disc is much thinner in comparison, so it can put that weight saving into a heavier rim which, in turn, creates more inertia when spinning and therefore has a much greater output kJ figure.