View Full Version : FRC228- GUS 15
davepowers
04-03-2013, 11:16
I'm proud to present GUS Robotics Inc.'s 2013 competition robot and build blog. This year has been something else, the ups and downs have all been worth it. Hard work really does pay off. Here's this years competition robot and something I'm very proud of, our build blog!
http://3.bp.blogspot.com/-E5wFa97nKdg/UTTEkc_joPI/AAAAAAAAAz4/VNp7kb_l1HU/s1600/c2fL1OCivnQiSlyDgRgAjFqJ-e7-2aW4zErbcGtLEWg.jpg
http://frc228buildblog2013.blogspot.com/
Good luck to everyone competing this year, unfortunately there was no time to make a fancy video, but we'll make something really awesome after the seasons over! I will also white paper the cad including the hanger after the season is over!
-Dave Powers
Absolutely amazing. This is the kind of robot I look at before each season to get inspired by and to learn from.
very cool.
do you have any more shots of the interior and/or chassis? i'm very interested in your chassis design, chain tensioning etc.
Steven Donow
04-03-2013, 13:20
Looks awesome! Love the wide intake. GUS always have some of the sweetewt looking bots.
davepowers
04-03-2013, 13:28
Absolutely amazing. This is the kind of robot I look at before each season to get inspired by and to learn from.
very cool.
do you have any more shots of the interior and/or chassis? i'm very interested in your chassis design, chain tensioning etc.
Thanks for the kind words!
The chassis design is one we've used for years. It is .090 alum, CNC turret punched frame. Our gearboxes are two speed VEX Pro ball shifter with the optional third stage in place. The wheel configuration is the standard 6wd, 1/16th inch drop center, 6 inch colsons with treads cut into the competition wheels. It's bulletproof and incredibly smooth. In the pictures below you can see some more details. We haven't had to use chain tensioning because the chain lengths were calculated out in the CAD before anything is even made. Through out the season we may experience a little chain stretch, in that case we just add some floating idlers to counter the stretch.
Packaging was difficult for us this year, so keeping everything as neat as possible was a must. Let me know if you have any other questions!
http://farm9.staticflickr.com/8086/8527945151_1c33a60cd2_c.jpg
http://farm9.staticflickr.com/8368/8527939995_9afb8d20c1_c.jpg
http://farm9.staticflickr.com/8086/8527939957_9e8033a96a_c.jpg
http://farm9.staticflickr.com/8245/8527939943_88d8f36e9d_c.jpg
http://farm9.staticflickr.com/8510/8529053348_2404b72130_z.jpg
-Dave Powers
slaythebad
04-03-2013, 14:16
Just curious, why the treads cut into the Colsons? Aren't they plenty grippy? Did you have trouble with the grip in testing?
davepowers
04-03-2013, 14:31
Just curious, why the treads cut into the Colsons? Aren't they plenty grippy? Did you have trouble with the grip in testing?
By our testing cutting the treads in the colsons increased the coefficient of friction by up to 30%, this summer we will be working on documentation to prove this. There is a reasonable difference in the amount we can push with our competition robot that is fitted with the cut colsons to the practice robot, that has just the left alone colsons. This will be the forth year driving with these colsons and I can say we rarely even come across someone we can't push!
-Dave Powers
Nice work guys, I'll be sure to stop by and get a tour of the machine this weekend.
2348humanplayer
04-03-2013, 15:21
Sooooo...no climb? :confused:
Alpha Beta
04-03-2013, 15:22
Looks awesome! Love the wide intake. GUS always have some of the sweetewt looking bots.
Always been a fan of GUS robots. Love the wide intake too. Does it pick-up two at a time? Only say one at a time in the video clip on the blog.
davepowers
04-03-2013, 18:34
Sooooo...no climb? :confused:
Who said that?! :cool:
Always been a fan of GUS robots. Love the wide intake too. Does it pick-up two at a time? Only say one at a time in the video clip on the blog.
It can pick up two at a time and index them into our hopper rather well! Maybe I'll try to get a video tonight of the practice robot if there's time!
-Dave
Looks like that Tormach is treating you well!
What is that rubber-looking material you are using on the intake?
davepowers
05-03-2013, 00:31
Looks like that Tormach is treating you well!
What is that rubber-looking material you are using on the intake?
Treating us well is an understatement! The orange rubber material is part number 3482K4 from Mcmaster(http://www.mcmaster.com/#rubber-angles/=lqooc9). It's just orange rubber angle, nice and stiff, pulls the frisbee right in!
After some practice we have modified the intake slightly, instead of double wrap all the way around, we do four straight strips across the roller. With the spiraled rubber it would tend to funnel the frisbees to one side preventing us from picking up two frisbee's. With the straight rubber it solved the problem!
-D
Treating us well is an understatement! The orange rubber material is part number 3482K4 from Mcmaster(http://www.mcmaster.com/#rubber-angles/=lqooc9). It's just orange rubber angle, nice and stiff, pulls the frisbee right in!
After some practice we have modified the intake slightly, instead of double wrap all the way around, we do four straight strips across the roller. With the spiraled rubber it would tend to funnel the frisbees to one side preventing us from picking up two frisbee's. With the straight rubber it solved the problem!
-D
Can't wait to see the climb now :)
I was definitely looking at that exact stuff yesterday, debating whether or not to order it! Thought it would be too stiff. I do believe I will place an order now thanks to your input. Thanks!
davepowers
05-03-2013, 11:00
Can't wait to see the climb now :)
I was definitely looking at that exact stuff yesterday, debating whether or not to order it! Thought it would be too stiff. I do believe I will place an order now thanks to your input. Thanks!
Glad we could help! Good luck this year!
-Dave Powers
karomata
05-03-2013, 18:33
Very innovative and interesting design!
Does it hold one than one frisbee at a time?
davepowers
06-03-2013, 00:38
Does it hold one than one frisbee at a time?
Yup! As you can see in this picture he wears a backpack over the shooter to hold up too four Frisbee's. We ran out of time before we could attach the competition one so that will be done at WPI on Thursday.
http://farm9.staticflickr.com/8233/8533596742_6c538d55fb_c.jpg
-D
Beautiful robot GUS! Always a sharp looking machine.
Best of Luck in competitions!
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