Sub second climb club

FIRST General Forum
1

Sorry if this thread turns out to be a duplicate…

What teams out there have a less than 1-second climb? timed from when the first wheels leave the ground to when the sensor is triggered.

Another way to measure this: When the first wheels leave the ground to when the sensor light turns on <2sec.

Tall-bots definitely have a physical advantage, but climb orientation plays a big role as well.

So far (with my limited observations, and of course highly incomplete/wrong :P):

Team #   |   time (ms)   |   Tall (t)-or-Short (s)
- 1114           970               t
- 6001          ~1000              s
- 180            800               t
- 4543?                            t
- 558?                             s
2

I’m not completely sure, but check out 190, their climb is wicked fast.

3

And I thought we were fast at 2 seconds :eek:

4

Look at 558. They power their climb off one side of their drive train (3 CIMs essentially on the climber). It’s quick.

5

I know that 2471 has the theoretical ability for a sub second climb. They use a PTO from a 6 cim drive for that. My team has a subsecond climb on paper but in reality it takes about 1.25 seconds.

6

All 6 cims? As in BOTH sides of the drivetrain :eek:

7

180 appears to be just under a second: https://youtu.be/KaTy7lZn-HU?t=2m12s

8

180 is insanely fast, probably just around a second for them to climb.

9

Got 'em. Fastest yet :smiley:

Thanks for supplying a video. Much appreciated.

10

My team is having trouble just ceaching the rope can any one help us please

11

Long drum (6 - 8in), hook side velcro riveted to drum, drum driven by a 100:1 VersaPlanetary on a 775pro. Support the drum on the other end with a pillow block. Use a “fuzzy” 3/8in rope with a LOOSE slipknot in it (to generate slack for the rope to become fully engaged with the drum before the weight of the robot is on it.).

Also, make sure you have “pokey bits” to trigger the sensor, as the drum will hit the bottom of the Davit channel first.

EDIT: Drum shouldn’t be larger than 1.75 in in diameter

EDIT 2: the naming scheme for Versa planetary is stupid, it should be named 1:100

12

If you’re having specific issues with your design, you can make a new thread to ask for help. This thread is talking about the sub-second climbs teams are achieving in competition. You can PM me if you have any other questions.

13

Yup. That said their climb was average due to the way that they acquired the rope. They claimed that theyou could theoretical impart 4000lbs of force on the rope.

14

What is the weight of your robot?

15

That question was meant for Skyhawk.

16

558 is the fastest I’ve seen in person. Definitely just about 1 second from when the rope secures to the robot to touching the pad.

Obviously, though, nobody can complete a climb in one second, since you have to hold the touchpad for 1 second to get the points :slight_smile:

17

Do you want weight added to the table?

If you are inquiring about our bot in particular… we are at somewhere near 110 lbs. We do not qualify for sub second climb, although it is relatively qiuck. Our climber does have a fair bir of bang though (we had to throttle it back to something we were more comfortable with using).

I accounted for that in my definition, “sub second climb club” was just too good of a click-baity title. :stuck_out_tongue:

18

Disagree. 100 turns produces 1 turn. As in my truck has 4.11:1 differential gearing and my transfer case is 2.3:1…

19

Both conventions are used interchangeably throughout all of the FRC product world. It’s certainly confusing, but considering how rare it is in FRC to over-gear a motor, it’s usually pretty clear what is meant.

20

67 is another really quick PTO climber. Not sure if it’s under 1 second or not, though.