Team Saint Robot Builds

[Omnibot9]

Useful info for your walker would be Boston Dynamics Patents and any open source software already out there for walkers.
http://www.freepatentsonline.com/8126592.html
http://www.freepatentsonline.com/8973613.html
http://www.freepatentsonline.com/7734375.html
http://www.freepatentsonline.com/7398843.html
https://www.poppy-project.org/en/technologies/ < don't know anything about this...
https://opensource.com/life/16/4/ope...otics-projects < or this, but you get the idea.

[craig_colliass]

I'm looking to make a powered gyro for a none combat type project I was thinking of using an out runner and having the disc secured to the outside of the motor case using the output shaft as a steady with an appropriate bearing to support it, gyro would be about 600grams, speed over 12000rpm. any ideas for a good reliable motor and speed controller for the job?
thanks
Craig

[R9000]

That'd be 5100 Ohms, or 5.1k Ohms (1st band green (5), 2nd band brown(1), 3rd band red (two 0s)) with gold (5%) tolerance. And of course you'll want a through-hole component.
This should do: http://uk.rs-online.com/web/p/produc...FQIM0wodBMcMng
Though it might be easier to visit your local electronics store and just ask them.

[Flag Captured]

Pitter Patter in the US uses cams to shuffle, as did Overhaul at last year's Battlebots (only in the whiteboards though)
They seem good but a little bit bumpy from what I can see, might be feasible to get rid of some of that with some tweaking...



Of course the massive detriment is that unlike some US events you don't get any weight increase so it's a bit more weight in a drive system for no real gain over a conventional wheeled setup (which is why overhaul swapped to wheels for the competition). That said, if the FRA were to honour the Robot Wars weight increases I can imagine it'd be a fair enough trade. I suppose in the wooden floor arenas you could also try small studs in the 'feet' to help increase traction?

[craig_colliass]

What is considered the best UBEC it's just to run the radio in my robot but I am looking for a good reliable one thanks

[kane]

Something like this http://www.fast-lad.co.uk/store/prod...ducts_id=38150 or this https://hobbyking.com/en_us/turnigy-...or-lipoly.html

[overkill]

Thanks for the video find Matt! That was really interesting to watch; given the high speed the system runs at, perhaps lowering the cam eccentricity and using thicker, softer grip material would reduce the bumpy drive and still move at a reasonable pace? Personally, I want to see a shuffler using the Straand Beast mechanism - totally impractical but it looks so cool

[Flag Captured]

Size/weight limitations?

Would point towards the NTM Pylon motor and either ZTW spider or Afro 30a if it's a smaller project, or one of the Turnigy Helistar motors with a 200A Red Brick if there aren't really any size or weight limits. The latter would want at least 6s but the former would only need 4s

Used both in spinners and they're very torquey motors in that application so shouldn't have any trouble with 600g at 1:1

[Flag Captured]

Oh this will spin it up in like two seconds haha

I have used the Pylon in my Beetleweight Mercury in testing and the Helistar in my Featherweight Overdrive- they both accelerate to max speed in a second or two (Overdrive got to a 13,000 theoretical in ~2.5 seconds or so with a 2.2kg drum) so you could easily get away with smaller motors I suppose... Just got to consider the startup torque so they don't cog too badly haha

How big would the weight be, diameter wise? I have an absolute ton of NTM 28-30s I could do a bit of testing on/ send some across if they'd be handy along with appropriate speed control? Still owe you one for all those offcuts from Manchester last year haha!

[Rapidrory]

If its just a flywheel with little air resistance and good bearings you'd easily get away with something around 100W or so. If its a 1:1 attachment you'll want something around 1000kv, 100-200W, and 3-4S.