Team Whyachi's New Bot

[ewan]

If this robot was for the FRA champs... Its all gone to waste :sad:

[mikeyg]

Whys it gone to waste?

The machine bears the Warrior name, however.

[mikeyg]

Sorry, just read the sorry news :sad:

[robotic_ants]

Ive just been looking at replys from Terry Ewert of Team Whyachi and he comments that variants of this bot have been on the Whyachi drawing board for a while. And that its first design ideas started out as HPA, then hydraulic, then steam. They even looked at some sort of disc shooter/coil gun methods which I dont know how they would of worked. Until they finally settled on a spinning-kinetic-flipper. Terry also commented that most people are aware that there is much more power density in NiMh cells than an pneumatic tank, its just getting a case of activating a quick powerful flipper with it so alternatively they developed a 2.5 thick 4140 flywheel which is 24 dia by 4 high and is supposed to spin at 1000rpm but they have been having problems with drag on the perimeter bearing.

Heres how Terry tried to explain how the flipper mechanism works. quote:

There is a land machined on the top of the ring. This land rings center is offset from the main ring center, which gives the stroke. There is a top link that pulls the flipper plate up which engages with the spinning land when firing. Once the engagement link does its job, a ramp pushes it back up to the re-cocked position if the flywheel is still spinning with enough energy. Well i hope you got that because there is still alot of us Uk and USA builders that havent a clue what he is trying to explain which might be aided by some pictures but apparently he only took that one picture on the site before the bot was shipped to the Uk for the now cancelled FRA Championships, once he gets it back we will have some more photos (yay!) and probably a better explanation.

Chris - http://www.featherweights.org/forum

[robotic_ants]

Well as some of you may know if you read the American RFL forum, a massive event called Robotic Revolution in New Orleans has recently taken place, videos and event reports are just starting to come thorough and there is one video in particular at the moment that displays how effective Warriors spinning-kinetic-flipper is for those of you who are still interested. Also its worth mentioning that I believe Warrior is in the 220lb weight class so its no lightweight....

http://labratrevolt.com/CYCvsWAR.movhttp://labratrevolt.com/CYCvsWAR.mov (CycloneBot Vs. Warrior - Warning 45Mb)

Chris - ^_^

[maddox]

I have studied it, and I am impressed.

But the first flip is assisted by the energy in the full body spinner bouncing on the arenawall.

Nonetheless, good machine from a heavy team.

I stick to CO2 myself

[robotic_ants]

Some more event reports are comming through now and so are some very detailed photos of Warrior but it is still hard to figure out how this bot is actually working..

These pictures are from Team Mad Cow and show a very detailed view of Warrior and alittle description on how the flipper mec works...

http://www.teammadcow.com/events/no2005/warrior.jpghttp://www.teammadcow.com/events/no2005/warrior.jpg
http://www.teammadcow.com/events/no2005/inside_warrior_drive.jpghttp://www.teammadcow.com/events/no2...rior_drive.jpg
http://www.teammadcow.com/events/no2005/warrior_wedge.jpghttp://www.teammadcow.com/events/no2...rior_wedge.jpg
http://www.teammadcow.com/events/no2005/inside_warrior_springs.jpghttp://www.teammadcow.com/events/no2...or_springs.jpg
http://www.teammadcow.com/events/no2005/warrior_shell.jpghttp://www.teammadcow.com/events/no2...rior_shell.jpg
http://www.teammadcow.com/events/no2005/warrior_servo.jpghttp://www.teammadcow.com/events/no2...rior_servo.jpg
http://www.teammadcow.com/events/no2005/warrior_gearbox.jpghttp://www.teammadcow.com/events/no2...or_gearbox.jpg
http://www.teammadcow.com/events/no2005/warrior_rack.jpghttp://www.teammadcow.com/events/no2...rrior_rack.jpg

It uses a Magmotor to spin a 2 thick chromoly shell to about 900 RPM, and then uses a high power servo to pull an engagement pin. This pin causes the flipper arm to drop down and ride an offset ring on top of the shell, which in turn powers the flipper, and recocks it!

And the only way this bot was stopped at NO was by Megabyte a very powerful U.S. FBS, when it cracked the 2 thick chromoly shell..

http://www.teammadcow.com/events/no2005/cracked_shell.jpghttp://www.teammadcow.com/events/no2...cked_shell.jpg

Chris - ^_^