Chief Delphi - Interesting/Cool Scaling Mechanism Designs

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Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- Robot Showcase (http://www.chiefdelphi.com/forums/forumdisplay.php?f=58)

- - Interesting/Cool Scaling Mechanism Designs (http://www.chiefdelphi.com/forums/showthread.php?t=146673)

CalTran

05-04-2016 19:15

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by lovelj (Post 1568137)

This has very little energy and I would be surprised to see a judge pull the plug.

If I was a judge, I'd give these guys an engineer in excellence award for their creativity. Bravo!!!

Half correct. Robot Inspectors (Yellow hat people) and Referees (Zebra stripey people) (And I suppose to an extent Safety Advisors (What do they wear now a days? Red? Green?)) are the ones that would be able to pull the plug. But you are correct that judges can award Excellence in Engineering / Creativity / Industrial Design awards.

AdamHeard

05-04-2016 20:04

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by lovelj (Post 1568142)

Here is what OSHA says... Compressed gas is anything over 40 psi. I seriously doubt if they got over 10 psi.

https://en.m.wikipedia.org/wiki/HAZMAT_Class_2_Gases

I seriously doubt they got over .1 psi.

philso

05-04-2016 23:23

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by martin417 (Post 1568041)

A fan does not provide compressed air, it provides flow. That is why it is very difficult to even find a rating for delta P for most muffin fans as supplied in the KOP in the past. But I was able to find a rating for for a special "high static pressure" muffin fan for restrictive computer cases. This "high static pressure" fan was able to create a static delta P of .002 PSI when dead-headed.

The strongest axial fan that EBM Pabst makes produces a maximum back pressure of 310 Pa = 0.044 PSI = 0.00306 Atm. It is not FRC legal (24.7" dia., 52.6 lb, requires 277 Vac @ 8.18 A). At work, we measure the effectiveness of the cooling fans installed in our equipment using an anemometer not a pressure meter.

JesseK

05-04-2016 23:36

Re: Interesting/Cool Scaling Mechanism Designs

I love (but really hate) how this thread has derailed from the coolest climbing mechanisms to banter over one guy's pedantic ridiculousness. If we really want to get into math and definitions from a dictionary in the name of legality, shouldn't we start a new thread? There are 2 weeks of new mechanisms yet to debut and I'd love for them to have a home to chit-chat about.

llamadon

06-04-2016 06:13

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by Justin Ridley (Post 1568123)

This blocker was built by 118 to add to a 3rd robot at champs. With 4039's help we installed it on their robot and passed supplemental inspection. It was planned for use in the division finals against full court shooters (until the eventual champions knocked us out.). It finally got to see some use at IRI.

This was an off the shelf fan, with model airplane propellers, run by a 775, inflating a custom sewn bag. I never would have called this a pneumatic device and it was never questioned as such.

During this year’s brainstorming, this blocker was brought up as possible way to deliver a hook to the bar. I honestly didn’t foresee it working, and love that 4060 pulled it off… it brought an immediate smile to my face when I saw the video. Great job.

Slight derail, but it is interesting to hear that this kind of cheesecake is what my team might have been up against if things played out differently in those elimination matches.

Love the climber on 4060, reminds me of the roll up party favor whistles.

Chris is me

06-04-2016 10:37

Re: Interesting/Cool Scaling Mechanism Designs

Not to take anything away from 4060, but this isn't even the first inflatable hanging mechanism deemed legal in FRC. 69 in 2010 added an inflatable hanger for the Boston Regional that year, and used it to hang somewhat consistently and seed high. This continues to demonstrate the long history of these devices not being considered pneumatic devices.

asid61

06-04-2016 12:07

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by Chris is me (Post 1568436)

*snip*

Please stop talking about this, it's pretty clear there are differing opinions on the subject and the team in question can take whatever they want from it.
I didn't know of many cool climber mechanisms so I clicked on this thread, only to find that it's just a giant argument over one team's climber (which was really cool btw).

I am a little surprised no climber has been cheesecaked yet, although I could be wrong.

bennettj800

06-04-2016 12:18

Re: Interesting/Cool Scaling Mechanism Designs

I apologize for stating my opinion as fact... I never intended to do so, nor to cause any uproars... I am a friend of logic, and when I state my opinion it often transgresses into a logical statement (in my mind) and therefore comes into existence as written fact, be it direct or determined. i hope i didn't rustle too many feathers

bkahl

06-04-2016 12:32

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by asid61 (Post 1568484)

Please stop talking about this

No.

Quote:

Originally Posted by JesseK (Post 1568312)

Starting one.

notmattlythgoe

06-04-2016 12:34

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by bkahl (Post 1568506)

No.

Pat Fairbank

06-04-2016 12:38

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by Chris is me (Post 1568436)

See also 773 in 2004. They had a giant inflatable cucumber (since they were the Kingsville Kukes, get it?) to float a hook up to the bar.

JesseK

06-04-2016 13:08

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by Pat Fairbank (Post 1568516)

See also 773 in 2004. They had a giant inflatable cucumber (since they were the Kingsville Kukes, get it?) to float a hook up to the bar.

Searched for a video and came ever so close since someone from 48 filmed a few matches from that event. May search some more tonight.

BAB the Builder

10-04-2016 20:44

Re: Interesting/Cool Scaling Mechanism Designs

Quote:

Originally Posted by GeeTwo (Post 1567497)

We had an idea like that but decided that it would have failed inspection under R77 and as clarified by Q688.

I don't know how 4060 did this, but we were considering a coiled wire or tube inside the inflatable that kept things from getting too far out of hand. Our first iteration would have been with a piece of lightweight dryer vent tube.

We had prototyped one of these a while ago and it worked really wel, just not enough space in the bot. to get around the rules of inflating it ours did not get hooked into the pneumatic system, but instead a bag motor on a leaf blower impeller. worked great.

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