Chief Delphi

Chief Delphi (http://www.chiefdelphi.com/forums/index.php)
-   Extra Discussion (http://www.chiefdelphi.com/forums/forumdisplay.php?f=68)
-   -   pic: 67 Hanging Around (http://www.chiefdelphi.com/forums/showthread.php?t=84493)

Alex Dinsmoor 21-03-2010 18:16

pic: 67 Hanging Around
 

BJC 21-03-2010 18:18

Re: pic: 67 Hanging Around
 
Thats a really cool hang.
I remember you guys working on it at Kettering, but it wasn't quite ready then.
Nice to see its working.

By the way, it kind of looks like its floating:p.

JABot67 21-03-2010 18:34

Re: pic: 67 Hanging Around
 
Finally someone uploads a picture of our robot! I'm sure if anybody has any questions about how it works, we would gladly answer them.

Did anyone take a picture of the end of Finals 1, with 51, 67, 27, and 201 all hanging at once? That made for a really exciting endgame.

Alex Cormier 21-03-2010 18:36

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by JABot67 (Post 940561)
Finally someone uploads a picture of our robot! I'm sure if anybody has any questions about how it works, we would gladly answer them.

Did anyone take a picture of the end of Finals 1, with 51, 67, 27, and 201 all hanging at once? That made for a really exciting endgame.

Are you guys really 10WD? With 4 different types of wheels?

JABot67 21-03-2010 18:52

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by Alex Cormier (Post 940565)
Are you guys really 10WD? With 4 different types of wheels?

Our robot is 8WD with 3 different types of wheels. We have 4 small wheels, 2 in the front and 2 in the back, that only contact the ground when going over the bump. In the middle-front behind the small wheels we have traction wheels, and behind those are slick(er) wheels, so that when we turn we rotate around a point between the 2 traction wheels.

We found that this drive works really well for going over the bumps. In fact, in auton we go over the bump to the next ball just by setting the motors to a constant speed and waiting for an encoder count. I wonder if 1114's 8WD can do that...

Alex Cormier 21-03-2010 18:55

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by JABot67 (Post 940578)
Our robot is 8WD with 3 different types of wheels. We have 4 small wheels, 2 in the front and 2 in the back, that only contact the ground when going over the bump. In the middle-front behind the small wheels we have traction wheels, and behind those are slick(er) wheels, so that when we turn we rotate around a point between the 2 traction wheels.

We found that this drive works really well for going over the bumps. In fact, in auton we go over the bump to the next ball just by setting the motors to a constant speed and waiting for an encoder count. I wonder if 1114's 8WD can do that...

Awesome, I always look to you guys for a slick drive train.

In Pittsburgh, 1114 went over the bump in auto mode numerous times.

Arefin Bari 21-03-2010 18:56

Re: pic: 67 Hanging Around
 
Through the webcast it just looked like a box, but in the picture it looks pretty. :)

Chris Hibner 21-03-2010 19:07

Re: pic: 67 Hanging Around
 
HOT has one of the coolest hangs in the competition this year. At first, it looks like a plain old hook-and-winch. But when you know the real secret of this weapon, it is awesome, as in they can raise after the buzzer.

LLogan 21-03-2010 19:15

Re: pic: 67 Hanging Around
 
Very nice looking machine you got there!

I am curious about the two pairs of smaller outside wheels. My team wanted to create a 10 wheel drive with two pairs of raised smaller-diameter outside wheels, very much like the ones on your bot. However, we couldn't get an appropriate sprocket ratio to power those wheels and thus decided against it.

Are you accommodating for the differences in linear velocity due to the different diameters of the wheels with sprockets? With my eyes, it seems that there is a larger sprocket on the larger wheel and a smaller sprocket on the smaller wheel. That seems counter-intuitive to what I would imagine, as I thought that you would need a larger sprocket on the smaller wheel to increase its linear velocity.

Anywho, VERY nice looking 'bot! Congratulations on the two regional wins as well!

Alex Dinsmoor 21-03-2010 19:29

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by JABot67 (Post 940561)
Finally someone uploads a picture of our robot! I'm sure if anybody has any questions about how it works, we would gladly answer them.

Did anyone take a picture of the end of Finals 1, with 51, 67, 27, and 201 all hanging at once? That made for a really exciting endgame.

Haha yeah as soon as I took this picture I thought about how the majority of FIRST hasn't seen your robot yet, so I wasted no time posting it to CD :)

And I'm not sure if I got that picture, but I will check. Dan Ernst may have taken one also, but I'm not sure...

EDIT: Dan posted a picture of the quad hang. I will upload it to CD, but in the meantime here is the link.

JABot67 21-03-2010 19:30

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by LLogan (Post 940600)
That seems counter-intuitive to what I would imagine, as I thought that you would need a larger sprocket on the smaller wheel to increase its linear velocity.

You need a smaller sprocket on the smaller wheel. The smaller wheel needs to spin faster to cover the same ground as a larger wheel, and when you chain a larger sprocket to a smaller sprocket, the smaller sprocket spins faster.

LLogan 21-03-2010 19:32

Re: pic: 67 Hanging Around
 
...Of course. What a brain-fart on behalf of me...

Thank you for pointing that out :P

BJC 21-03-2010 19:50

Re: pic: 67 Hanging Around
 
I think you should put a ball rebounder on the top like 469 or 51.:p
Wern't you guys about 90 pounds at Kettering?
Ya, a ball rebounder would be good... you wouldn't have to use it, it would just be to scare the !@#$% out of everybody at states.
I can see it now..."Ohhh Myyy Goddd... ok everybody lets start packing up, we'll try again next year.":p

Bjenks548 21-03-2010 20:38

Re: pic: 67 Hanging Around
 
Congrates on doing everything possible in breakaway lol over the bump, through the tunnel, kick and score from all three zones, awsome ball magnet, and hang. Wait im missing something... can't wait to see you guys suspend someone at states :eek:

JABot67 21-03-2010 20:39

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by BJC (Post 940627)
I think you should put a ball rebounder on the top like 469 or 51.:p

Haha... we were going to do something similar... use our wide arm as a bang board to deflect balls. But then we figured out we can't do that. Since our arm is powered by the same motors as our kicker winch, we have to disengage the kicker to move the arm, and the kicker in its rest position is outside the frame perimeter (as seen in the picture). So we can only move the arm in the last 20 seconds of the match.

NickE 21-03-2010 21:30

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by JABot67 (Post 940676)
So we can only move the arm in the last 20 seconds of the match.

Or when in contact with the tower:
Quote:

Originally Posted by Rule G30-C
TOWER Contact ROBOT Volume - During a MATCH, ROBOTS in contact with their ALLIANCE TOWER may extend beyond their NORMAL CONFIGURATION volume but may not exceed the FINALE CONFIGURATION maximum volume.


Adam Freeman 21-03-2010 21:55

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by NickE (Post 940721)
Or when in contact with the tower:

Unfortunately, we would not be able to deflect any balls if we were in contact with the tower.

We know ways to keep the kicker inside the frame when disengaged, but I don't think we need to worry about it.

I can think of other things for us to do during the match....

ExTexan 21-03-2010 23:19

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by Adam Freeman (Post 940739)
Unfortunately, we would not be able to deflect any balls if we were in contact with the tower.

We know ways to keep the kicker inside the frame when disengaged, but I don't think we need to worry about it.

I can think of other things for us to do during the match....


http://www.knivesplus.com/OLD-TIMER-KNIVES.HTML
:)

Clinton Bolinger 22-03-2010 03:28

Re: pic: 67 Hanging Around
 
Can you lift from ground level or do you only lift off the bump?

Would love to see you suspend from 2337!

-Clinton-

musicspeaks 22-03-2010 19:53

Re: pic: 67 Hanging Around
 
Thanks for the picture! :D

piloot 05-02-2014 12:09

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by musicspeaks (Post 941313)
Thanks for the picture! :D

http://powermuscles.net :eek:

Pault 05-02-2014 12:28

Re: pic: 67 Hanging Around
 
Quote:

Originally Posted by piloot (Post 1337967)
-snip-

Reported

Al Skierkiewicz 06-02-2014 07:43

Re: pic: 67 Hanging Around
 
I deleted the account but I need someone to delete the post in this forum.


All times are GMT -5. The time now is 07:20.

Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi