New Feather Idea

which?

Which rammer? Theres several for you to choose from, boxy ones, pointy ones, wedgie ones :proud:

In all seriousness (and at the risk of looking stupid by being rational), Id advise you just get two drill motors or even wiper ones and get a rolling chassis of some sort together to confirm that you can actually build something before starting on the robot proper, itd save you quite a bit in parts youd buy and then realise you couldnt use.
Do a bit more research into these things as well, thread archives are there for a reason...if you do your research on things like motors and robot designs rather than just asking the most obvious of questions, you endear yourself to people more and they become a lot more willing to help you :)

thinking of using 2mm diamond plate as armour

What are you on about? Like Kody said, think about a simple design with as few moving parts as possible. The more complex your design the harder it will be to get it to work and the more there is to go wrong. People on here are always willing to help, just ask sensible questions.

no I mean which crushers

Venom, and another one is being built by (?) the Psycho Fling Team

There is also dragonclaw that tony built.

Ben and Ed: I think diamond plate means that patterned aliminum used for things like outside stairs

best crusher that i have come up against with 4 4 toon is without a doubt major damage, left my chasis totally twisted after Guildford this year..

lol Clive, MD doesnt quite make the FW weight limit. Dave got it, checker or tread plate. I just cut up 5 2500x2000 of 7.5mm last week.

.. checker plate is different to dimond plate;

check plate;
http://www1.istockphoto.com/file_thumbview_approve/4607365/2/istockphoto_4607365_checker_plate.jpghttp://www1.istockphoto.com/file_thu...kphoto_4607365 _checker_plate.jpg

Diamond;
http://diamondplatestore.com/library/DiamondPlate-Silver1.gifhttp://diamondplatestore.com/library...te-Silver1.gif

I think I meant checker-plate
Plus Dragonsclaw is being made into a lightweight

(Message edited by neontetra23 on August 30, 2008)

We are offering you advise, why arent you taking it...its easier to go with a simple robot at first before making a more complex one...sheesh. :P

Kody, I do not mean to argue, but is Altitude simple?

Ben,
As much as it pains me to say it.. I have to agree with Kody on this one!
You are being offered advice by some of the best brains in the business here, which you seem to choose to disregard.
These people give their time and advice freely for the benefit of our sport/hobby, and the only thing they ask in return is a little respect.
If I may make a sugestion, ask one question at a time, if you dont fully understand the answer, dont be ashamed to ask for clarifacation.
Then go and act on that advice, be that either by building something or incorperating that advice into your plans for future machines.
Once you are happy that you fully understand that paticular point, please feel free to ask your next question.

Please dont think Im getting at you personaly (one or two people on this forum have had the same lecture off me from time to time!)
Im only trying to point out that we are all here to help each other out with any problems or questions and on the whole it works very well, BUT carrying on the way you have been in this thread will not score you many points on the how to win friends and influence people scale.

So please remember, a little thought before posting and a little respect goes a long way!

Here endeth the lesson!!

(P.S Building a reliable six wheel drive feather isnt as easy as you may think... Trust me, I know, P.I.T.As gearbox and transmission set up took me nearly 3 months to finaly get right!!:sad: )

Hold it, Geoff, I want to answer this one. :P

Ben, yes you DO mean to argue there, because you blatantly threw my own project in my face. :P Do realize that most pneumatic systems are easier than hydraulics systems, which is what you seem to be after. Also, not to brag, but I do declare I know more about the internals of a robot than you do (given by the questions you are asking), so I am more ready to take on the epic quest of building a combat robot. Gathered, no, Altitude is not simple at all, in fact no robot is, but its one of the easier ones to do. I myself would not undertake the task of making a robot like Razer or Tiberius because I do not have a thorough, or even basic understanding of hydraulics, and you definitely seem not to.

In short: dont argue, and PLEASE. TAKE. ADVICE.

Sorry, Geoff, but that post of his rather irked me.

Hi Mario, that KOS Astroflight motor/custom build planetairy gearbox/motor in wheel setup you mentioned sounds very interesting. Do you have any more info or links about this setup?

Nick:

http://www.bugs.nl/media/album/view.php?&path=L3J3L21pc2MvZmlyZXN0YXJ0ZXIvMTAuanB nhttp://www.bugs.nl/media/album/view....YXJ0ZXIvMTAuan Bn

Thanks Leo. That setup is just a work of art! It is probably too complicated to work in the lightweight I am designing, but its given me another idea; would I be right in saying that in a planetary gearbox, any two of the elements are rotating and the 3rd is fixed? Im thinking of converting an existing 4:1 gearbox to have fixed planetary gears and a rotating ring gear.

There is a Dutch hydraulic crusher feather.

Presser.

Thanks Mario, do you have a picture, so are Speed 900s at an 8:1 gearing ok for a feather

Speed 900 with a 8/1 gearing and 120mm wheels are a good drive, on 12V, if you can achive 4wd, youll have a very good pusher.


Unfortunatly, I dont have a picture of Presser atm.

no they are going to be 5 inch Battlekit wheels,
Can I use chain drive on those?

5= 127mm, close enough for me.

On 12V that setup will go about 20km/h Sounds a good speed and instant acceleration (wheelies garantied)

And I dont see any reason why chain cant be used. But for a 2wd I keep with the MSR gearboxes.
And if 4WD (or more) is needed, timing belt or poly V belts will do nicely for me.

How many 12V NiCad battlepacks should I use ?

Hannibalito I uses 1 12V 3600mAh pack, and can do more than 1 fight on that.

Hannibalito III uses a 4cell A123 battery.And thats only 2300mAh.

would 2 12V 3.3ah Nimh battlepacks be enough?

I would think one will be enough, In DB5 I use 1 2200 Nimh pack and it will last 30 minutes doing demos, usually 2-3 fights without being recharged.

1 pack will do fine indeed.

The stall current on speed 900s are 54A
WHAT SORT OF CONTROLLER CAN TAKE THAT?!?!?

By the way, which events are spinners allowed to run at ?

Generally, any speed controller rated in excess of 54 amps should be able to take it...

You should only look at the peak current the speed controller can take in a burst, the nominal amperage of a speed 900 is about 8A. If you run the 900s at stall constantly you are doing something horribly wrong. Both the Scorpion XXL and the Sabretooth 25A will handle the speed 900s just fine.

Lol @ Joey :proud:

@ Ben

Im building a crusher (just to let you know :))

Spinner robots (fws) are only allowed in the robochallenge arena and rebel robots arena in the uk

Can anybody suggest a powerful eletric linear actuater, and a diagram of how biohazards weapon works, and a nice cup of tea

Ben...common sense would dictate that if you have to ask what you need for something or how something works, you shouldnt attempt to do it...

The answers are all to be found on the internet, if only you would look.

Ben, Biohazard uses a 4 bar lifter system.

http://www.robotbooks.com/mechanical-design.htmhttp://www.robotbooks.com/mechanical-design.htm

It is not the easiest system to get right, specially in a feather. There are easier lifter ideas to start with.

Theres Plenty of ways to do the 4 bar lifter systems.
Theres the ones powered by actuators like on Biohazard or theres a few other easier and harder ways of doing it.
Theres a few robots that have a motor or motors attatched to the rear arm on the 4 bar setup (where your would normally pivot the rear bar at the bottom) and as they turn the rear arm moves. hard to explain try look at these see if you can work out what im talking about.
http://s189.photobucket.com/albums/z244/TXROBOTICS/Combat%20Robotics/4-Bar%20Robots/?action=view&current=lifterwork.jpghttp://s189.photobucket.com/albums/z...cs/4-Bar%20Rob ots/?action=view&current=lifterwork.jpg

http://s189.photobucket.com/albums/z244/TXROBOTICS/Combat%20Robotics/4-Bar%20Robots/?action=view&current=Jan11_02.jpghttp://s189.photobucket.com/albums/z...cs/4-Bar%20Rob ots/?action=view&current=Jan11_02.jpg

http://s189.photobucket.com/albums/z244/TXROBOTICS/Combat%20Robotics/4-Bar%20Robots/?action=view&current=ioguts.jpghttp://s189.photobucket.com/albums/z...cs/4-Bar%20Rob ots/?action=view&current=ioguts.jpg

http://s189.photobucket.com/albums/z244/TXROBOTICS/Combat%20Robotics/4-Bar%20Robots/?action=view&current=tb4_66.jpghttp://s189.photobucket.com/albums/z...cs/4-Bar%20Rob ots/?action=view&current=tb4_66.jpg

ok?
Or you could use like a screw style lifter. i think elvis uses this kind of method altho its not a 4 bar system.
http://s189.photobucket.com/albums/z244/TXROBOTICS/Combat%20Robotics/4-Bar%20Robots/?action=view&current=IMG_2729.jpghttp://s189.photobucket.com/albums/z...cs/4-Bar%20Rob ots/?action=view&current=IMG_2729.jpg

Elvis:
http://s189.photobucket.com/albums/z244/TXROBOTICS/Combat%20Robotics/Others%20Robots/?action=view&current=elvis.jpghttp://s189.photobucket.com/albums/z...cs/Others%20Ro bots/?action=view&current=elvis.jpg

Or theres another kind of complex method like used in storm 2.
http://www.teamstorm.com/storm2/storm2b.htmhttp://www.teamstorm.com/storm2/storm2b.htm

Well this might not have been any help but i tryed.
Heres a link to a few pics i have collected of 4 bar lifter robots. theres a few other design types in there.
http://s189.photobucket.com/albums/z244/TXROBOTICS/Combat%20Robotics/4-Bar%20Robots/http://s189.photobucket.com/albums/z...cs/4-Bar%20Rob ots/

Edit: BTW im new to this hobby so double check with somebody a little more experienced if you decide to use any of the methods above. The guys on here are a huge help and you should definitely take note of everything these guys say it well help you out alot in the end.
Cheers.

(Message edited by xtreme on September 02, 2008)

I think i understand this, but could somebody explain how this works
http://s189.photobucket.com/albums/z244/TXROBOTICS/Combat%20Robotics/4-Bar%20Robots/?action=view&current=tb4cutout_blksm.jpghttp://s189.photobucket.com/albums/z...cs/4-Bar%20Rob ots/?action=view&current=tb4cutout_blksm.jpg
And can anybody suggest a good motor for the arm

(Message edited by neontetra23 on September 02, 2008)

Easy, the end link is just turned by a motor, over a certain angle. that motor has a large reduction added- probably a 2 or 3 stage planetary gear.

quote:

And can anybody suggest a good motor for the armThere are plenty of options if youre just willing to look.