Quick arm rework

Hi it’s Drag from Gold Rush (you don’t know me) I need some other opinions on what to do with the robot, the first thing I would like some feedback on is whether or not to switch from our current design which is a multi stage chain lift to a reverse double four bar, keep in mind that we only have about a week of meetings with our robotics club which is about 3-4 meeting at two hours a piece. The second thing is whether or not to switch to a passive needle intake for cubes, similar to 5776y’s design. Thank you for reading and giving feedback

Only eight hours to build a reverse 4 bar from scratch… Hmmm, unless you have a detailed plan and a crack team of 4 or 5 outstanding kids who can build super fast and integrate everything flawlessly orrrrrr somebody is willing to take the thing and work on it at home, I would not suggest doing that in the time given. I’m guessing you would get more out of your time by improving whatever it is you have already. But that’s just my opinion.

Thanks for your input, we are a six person team but only 3-4 of us are good at building so that about 32 hours if you combine everyone working, I think we will stick with what we have

Knowing your bot I think you should stay with your old lift. A drfb is hard to build. We built one but we had to tear it apart as you know so that’s my input. Or you could go back to your flipper that you guys made last year in 30 minutes.

I would say 1 person in even 6 hours isnt unreasonable. And sometimes in vex a second person can actually make building faster(more often than not this isn’t the case).

The challenge is who is building. I would say if your unsure than it probably isn’t a good idea. The human brain is very good at predicting if something will work; the trick is to ask the right question.

"Muggle researchers have found that people are always very optimistic, compared to reality. Like they say something will take two days and it takes ten days, or they say it’ll take two months and it takes over thirty-five years. For example, in one experiment, they asked students for times by which they were 50% sure, 75% sure, and 99% sure they’d complete their homework, and only 13%, 19%, and 45% of the students finished by those times. And they found that the reason was that when they asked one group for their best-case estimates if everything went as well as possible, and another group for their average-case estimates if everything went as usual, they got back answers that were statistically indistinguishable. See, if you ask someone what they expect in the normal case, they visualise what looks like the line of maximum probability at each step along the way - everything going according to plan, with no surprises. But actually, since more than half the students didn’t finish by the time they were 99% sure they’d be done, reality usually delivers results a little worse than the ‘worst-case scenario’. It’s called the planning fallacy, and the best way to fix it is to ask how long things took the last time you tried them. That’s called using the outside view instead of the inside view. But when you’re doing something new and can’t do that, you just have to be really, really, really pessimistic. Like, so pessimistic that reality actually comes out better than you expected around as often and as much as it comes out worse. It’s actually really hard to be so pessimistic that you stand a decent chance of undershooting real life.

Me and them build about at the same speed an it took me to build my drfb 5 meetings even then it had a little work. Just my 2 cents.
Ps. When we built ours we still couldn’t get it to lift.