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Nice! And started on rocky, cut the disk, it's 3mm steel, 20cm diamiter (ish) weight 650...something grams, so need lighting.
http://s1111.photobucket.com/albums/h46 ... 772A26.jpg
I desided that all your robots are to well machined, so I'm lowering the standard and making mine out of scraps of rusty old metal, With some meccano here and there. Frame neally done as well, but jot photo worthy for the moment.
Thats massive, nowonder why its so heavy!
serioulsy though looking great Alex, will love to see the armidillo style!
Test video of RPM with Sloth and 180.
RPM only has a single bolt as a tooth at the moment as it isnt finished.
http://www.youtube.com/watch?v=32htvBb1 ... ture=g-u-u
There gonna be broken before the first event! Nice though!
If they break they no good for combat and it's fun testing
Really really awesome! Everyone's pictures and videos make me want to get building. :D
Was Sloth made as a test target, by any chance? I get the feeling it will live a hard life!
it was made as as a test robot and has seen better days already lol
nothing that a hammer wont sort out
few pictures of damage from 180 and rpm today
http://i348.photobucket.com/albums/q...o/e35480dd.jpg
http://i348.photobucket.com/albums/q...o/c629dfec.jpg
http://i348.photobucket.com/albums/q...o/4f8d1863.jpg
sloth will live on to be punished another day
Daaamn, these vids/pics make my servo lifter seem quite tame by comparison. Don't worry Alex, my beetles will be lowering the standard too :lol:
Got Flatulence running today and it seems alright, but the current drive ESCs don't actually offer any proportional control which makes driving impossible. There's only 166g left to finish off armour etc as well so I might swap out the 6V Nicad pack and ESCs for an 11.1V lipo and Botbitz controllers. But it's running at least, so won't be far off completion:
http://i31.photobucket.com/albums/c3...m/DSCN6675.jpg
Thats cool Jamie. Any idea what the lifter can lift? Sloth has lifted 1.8kg so far. Not tested anything heavier.
Im building an electric lifter for combat and a drum spinner for combat aswell they wont be engineered like my FBS. The Gimps mainly for demos and stuff. It will go in a few fights but ill mainly be using my drum or electric lifter.
Jamie, yours is awsome! It even has armour, I dont have enough spare weight for armour, let alown a base plate. :P
Cheers Alex, although it looks a bit shoddy to me but I'm probably just being over-critical.
Haven't tried to lift too much yet Tom. The servo has 20kg/cm torque and can easily right itself so I'd say a couple of kilos at least. Will try lifting a few different things once I've got the new bits for it.
Looking good jamie!
Dave, how thick is the steel on sloth?
It's 1.8/2mm
Managed a quick test video of Flatulence today. Took out the crap ESCs and put the Botbitz ones in:
http://www.youtube.com/watch?v=B7swFoK_wYQ
Impressive servo you've got on that!
So in BW spinners alone, we currently have a:
Vertical Disk
Horizontal Disk
Horizontal Under Cutting Bar
FBS
And a Drum spinner.
Who's making a vertical bar spinner? 8)
I may look into putting a solenoid in a BW. Did some research into trying it out on a FW, but found it wouldn't be very effectve and gave little advantages. Kudos to the Nipper guys for trying though.
I'm just thinking it'll scale down to BW size better.
Should've had a go at lifting Cicatrix hiding away in the corner there.
We have tested a solenoid in one. Theres plenty of off the shelf ones around and loads on ebay, but servos seem to work better so we went for a servo. Ill try get a couple of solenoid test videos up. Most only have really short stroke so you have to mount them really close to the pivot point so they have to be alot higher powered solenoids than yu would expect as the weight on the tip of the flipper arm could effectively be 4kg+ Also we found they like to have a couple of mm of travel before they have any force on them. so you drop it down ike 2-3mm under the flipper arm so its already moving before it hits the arm. They do work but just not as well as a powerful servo. One could be made pretty good and it would be cool to see one done, Just as something different. What sort of power solenoids have you been looking at?Quote:
Originally Posted by PJ-27
Can't remember exact figures out off the top of my head, but when I was looking into it for the FWs I could theoretically get the power of a LP (that's normal LP Tom!) system, but at a big weight, size and money cost. Plus like you noted, the stroke was very short and had little power to begin.
Be interested to see how you guys got on with it in a BW though.
Is there an active weapon rule in this class? was debating making a 4wd fbh but unsure as too the rules
Yes they is a active weapon rule
what would be a good parts list for this class? motor, esc's wise etc?
as i need an active weapon, BW bulldog it will be :)
its hard to say whats going to be the best parts to use at the moment.
People in the US are using http://www.robotmarketplace.com/product ... MINI2.html
Kenny is also using the Scorpion Mini
and for motors some of the mfa motors at technobots look ok,
Im using a 2x5a sabertooth in my full body spinner.
the 10a syren controllers look ok. anyone used them?
the modified brushless controllers look ok, there will be a few of us using them. might be worth seeing how they hold up over a few fights before alot of people get them.
you could always go for a 2x12a. They are more than capable of running any beetle and are proven to work in feathers so you cant really go wrong with them. and they dont weigh much.
What servo do you use for sloth? Once I figure out costs etc can see if it's worth it
May try and get some parts from the actual bulldog breed in this :lol:
Syren controllers are just single channel versions of sabretooths I believe .
180 is using 2 banebots, carbide will be using 2 25a hacked ( Ordered ), and full combat machine will be using a pair of mini scorpions
Im using a sabertooth 12amp, seems to work ok. and Haha, I just weighed the bear components of rocky (no frame mounts or pullys) and it weighs 1.5kg... I need to either need to use some untigravity technology, or lighten every thing, probably have to swap out half of the components, probably have to switch to a brushless spinner motor as that would save about 300 grams, and then lighten the blade. Shame, That brushed motor was seriously meaty and reliable. And the disk would become even less balanced.
Take a video of you breaking some stuff with it first :)
Belts not here yet, so I can't, and it's not finished enough to run, so there is no point, I'll just switch it over, it would be sorted by the time the belts arive.
what ratio mfa motors are people using? thinking of going for the 6:1?
Depends on which type MFA motor you've gone for?
I've gone for 30:1, but since I have 75mm wheels it has a little too much top end.
my wheels are about 2 inches, hence the low reduction
Inch? What's that? :rofl:
6:1 sounds very low, I think 30:1 would do best
unsure yet but their old meccano wheels which are small but wide, need the space inside if im going for a BW bulldog breed
@Matt, I hope you realise that as well as a Bull Dog there is also a Bull Beetle and if you didn't call your robot Bull Beetle Breed you'd be missing a great opportunity!
Name taken!
BullBeetle Breed it is :lol:
Haha nice name, and 30:1 would be best I think, I used the slightly lower reduction ones and there fast to fast, with no power on 50mm wheels. Smaller wheels may be ok, but I like my robots to be invertable
with a flipper/lifter thing I should be able to self right, wait and see really
Yeh, I just like the reassurance just in case something happends.
Thanks to Kenny for profiling new titanium base plate for rpm tonight as more clearance needed for hardox tooth I just fitted to drum, it works pretty well Tom just putting a test vid together so will be on soon
http://i348.photobucket.com/albums/q...o/afbff80c.jpg
http://i348.photobucket.com/albums/q...o/3c17156b.jpg
http://i348.photobucket.com/albums/q...o/f7f2bc1f.jpg
http://i348.photobucket.com/albums/q...o/e5bf78d3.jpg
Some damage made to sloth tonight while testing new tooth
http://i348.photobucket.com/albums/q...o/f6f53374.jpg
http://i348.photobucket.com/albums/q...o/657e83b1.jpg