here is the video (not the best video i've watched but does the job)
http://www.youtube.com/watch?v=m74CEWU0bdQ
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here is the video (not the best video i've watched but does the job)
http://www.youtube.com/watch?v=m74CEWU0bdQ
nice!
They are only 0.4 kg actually!Quote:
Originally Posted by k_c_r
Did a bit more work on the robot today, all the hdpe is now screwed together and all the motors/electronics are inside. Just got to screw on base plate and put in an led then it will be ready for testing! No idea where I will test it as it has do little ground clearance (about 1mm by the look of it!) so I make have to screw/glue on some thin rubber. Also had problems with space for the wheels, basically there wasn't enough of it so had to do some modiffying. Only other problem is that only one battery fits in the robot so I don't know what I'll do about that.
Lol my bearings weigh only a few grams a piece. I would advise that next time, have a solid stationary shaft and then have some needle roller bearings inside the drum. Makes for a stronger structure overall and means you don't have to use those large bearing blocks.Quote:
They are only 0.4 kg actually!
Not looking too bad at all though.
I take it Needle Bearings are up to the impacts and RPM then?
For a drum yes as the impact energy is actually very low. Boner only has around 700J in it when it's going full speed and that's with a 3.8kg drum.
The danger from a drum isn't from a single large impact like a disc but rather a series of smaller hits that keep coming again and again.
Yeh I've heard before that Boner is only 700J but it must us them very effectively!
Ok that's interesting to know. What sort of RPM does Boner spin at?
around the 4000 rpm mark. The reason for the low KE is the relatively small diameter of the drum. If I took the same 4kg and increased the diameter then I could in theory store more energy in the disc than typhoon 2 however the resultant disc would fail on impact from lack of structure.
Did a bit more work today, I wired and fixed in my led and put in some 25 amp fuses from tecnobots to protect my esc. Tried to screw it onto the base plate but my countersink sucks so the screw heads scape along the floor so need to get a new decent countersink tomorrow hopefully! I can't weigh it to see how it's doing because last time I tried I broke my mums bathroom scales so I no longer have any, what type do most people use to weigh featherweights?
Also what receiver should I use with the spectrum dx6i transmitter, I know it should failsafe on all channels but I don't know which receiver does that?
spektrum br600
giant cod £7 one
I think the Giant one only fail safe's on the throttle channel. At least that's what I believe mine is doing.
The BR600 was purpose built for robots apprently but I'm not sure if they make them anymore
I thought the br600 worked only for the dx6 not the dx6i or the dx5e
The BR6000 (not 600, just to save confusion) I believe will work on transmitters DSM and DSM2, but they are not made anymore so better going with one of the other suggestions.
my giantcod rx failsafes with both a scorpion xl and some cheapy 50a escs
What the cheapy DSM2 one?
I can get it too failsafe on my Sabertooth by adjusting the trims and fooling the start up auto calibration, but not ideal.
yep, i use the £7 one
all the screws on the base plate are know countersunk and don't scratch the floor so i made a quick vid:
http://www.youtube.com/watch?v=HLSyLGM12SI
I must say I'm impressed. Now you need something that you can use more than once a year :)
That's really looking great :D
I'm surprised by how quickly the build has progressed; so you've got it driving and spinning, now the next logical step is a full-on outdoor smashy-smashy :twisted:
Hopefully that will happen tommow or the day after!Quote:
Originally Posted by k_c_r
Very cool! Great looking actually. It's... I don't know how to say this... in architecture, boxy, clean structures are considered modern and are therefore very stylish. Somehow Invictus is the robot version of that. :lol:
Can't wait for a, what was it... full-on outdoor smashy-smashy! :D
Looks good, was worried as I thought you were going to drop the camera on the spinner when you loomed in :lol:
my only bit of advice would be if you have weight spare, try and put some sort of rounded sections of HDPE or something on the back so it wont get stuck on its back and sides :)
it was to dark to film the smashy-smashy but i have got some pics of the damage it did!
[attachment=1:36l0j8np]invictus inflicted damage 002.JPG[/attachment:36l0j8np]
[attachment=0:36l0j8np]invictus inflicted damage 004.JPG[/attachment:36l0j8np]
Block of wood, be afraid! :twisted:
finnaly here are the vids from the full-on outdoor smashy smashy :twisted: :
http://www.youtube.com/watch?v=HTpkiqM7i3A
brilliant :D
Awesome!
What are you hitting? Some house bricks surrounded by wood and metal?
awesome!
Very nice :)
Looks like it handles well too.
Yes it is a couple of old bricks with a wooden/ aluminium off cut box. It took some HUGE chunks out of the aluminium and ripped out a couple of screws!Quote:
Originally Posted by PJ-27
Hi, should I fully discharge my nicads before charging them or is that bad for them (I mean at home not at events)
you should, yes.
hahahaha bring it on :)Quote:
Block of wood, be afraid! :twisted:
Maybe an Oak upgrade is in order.....
im happy with the 100mmx100mm fence post piece on the back :)
Just remember to varnish it every year, you wouldn't want it to start to weather.