30pt climb under 15 seconds

[RonnieS]

Originally Posted by xSAWxBLADEx

This mech. could do 15 seconds easy if geared right!
http://www.chiefdelphi.com/forums/sh...hreadid=111773

But how much space does that take??

[Walter Deitzler]

Originally Posted by Ronnie314

But how much space does that take??

Seems like a very small amount, at least, from what I can see.

[xSAWxBLADEx]

about 40 inches

[RonnieS]

Originally Posted by LedLover96

Seems like a very small amount, at least, from what I can see.

I guess I'm just not seeing the point in teams going for a 30pt hang, most teams are taking a lot of there robot space for a climbing mechanism when you can make up for a 30pt climb in auto easily by scoring 3-4 disks plus an easy 10pt hang that can be done in less than 3 seconds and take up little space. Thoughts please

[xSAWxBLADEx]

Originally Posted by Ronnie314

I guess I'm just not seeing the point in teams going for a 30pt hang, most teams are taking a lot of there robot space for a climbing mechanism when you can make up for a 30pt climb in auto easily by scoring 3-4 disks plus an easy 10pt hang that can be done in less than 3 seconds and take up little space. Thoughts please

Personally, we are planning to dump in low basket, and 30 point hang. We plan to be a straight elimination robot. Yes, their will be teams that score more than we do, but we will be completely out of their way in the elim. matches. They can do their thing and score like a maniac, and we can defend, feed, and hang.
(best thing about being at MSC)

[markmcgary]

Originally Posted by Ronnie314

I guess I'm just not seeing the point in teams going for a 30pt hang, most teams are taking a lot of there robot space for a climbing mechanism when you can make up for a 30pt climb in auto easily by scoring 3-4 disks plus an easy 10pt hang that can be done in less than 3 seconds and take up little space. Thoughts please

I dunno... 18 to 30 points auto. Plus around 30 in teleop. A quick 10 at the end. That 58 to 70 point shooter beats a 30 to 54 point climber. Maybe I'm just optimistic.

[s_forbes]

We learned last year that we shouldn't rule out parts of the game that seemed like they weren't worth going for. It kind of killed us at champs when all the short robots were balancing 3 on a bridge.

We will be doing the 30 point hang and it will be under 10 seconds. We may even bring up 4 of those colored disks at the end for bonus points. There's no turning back now, we're pretty dedicated.

[falconmaster]

Originally Posted by s_forbes

We learned last year that we shouldn't rule out parts of the game that seemed like they weren't worth going for. It kind of killed us at champs when all the short robots were balancing 3 on a bridge.

We will be doing the 30 point hang and it will be under 10 seconds. We may even bring up 4 of those colored disks at the end for bonus points. There's no turning back now, we're pretty dedicated.

Well I guess since Steve said we are going to do it, I guess we have to now...Should be fun!

[mikegrundvig]

Our climber design is significantly faster than 15 seconds in it's raw form. In practice, we will likely slow it down to be closer to 15 seconds so it doesn't beat up the robot so much. It also takes up a lot of space on the robot so all our other components need to be well positioned.

[Keyreaper]

Originally Posted by mikegrundvig

Our climber design is significantly faster than 15 seconds in it's raw form. In practice, we will likely slow it down to be closer to 15 seconds so it doesn't beat up the robot so much. It also takes up a lot of space on the robot so all our other components need to be well positioned.

Faster than 15 seconds? I can't wait to see this elegant solution in action. Everything my team has brainstormed up we believe will take much more time than that...

[mikegrundvig]

Originally Posted by Keyreaper

Faster than 15 seconds? I can't wait to see this elegant solution in action. Everything my team has brainstormed up we believe will take must more time than that...

It's reasonably elegant but it's not earth shattering by any means. We are using pneumatic cylinders combined with springs and the extension/contraction time of the cylinders is a bit under 1 second each at full weight. We need to articulate a few times to travel up the full pyramid and that's that. As the compressor is slow, so we will be storing a ton of air on the robot initially to power the cylinders the entire way. It comes out to something like 6 seconds or so if you just let the cylinders go full speed. Our concern is that at each step the robot will "bounce" and at that speed, it could bounce off. So we will likely slow it down with flow restriction to make sure nothing moves too quickly.

-Mike

[pfreivald]

Originally Posted by mikegrundvig

As the compressor is slow, so we will be storing a ton of air on the robot initially to power the cylinders the entire way.

That's a lot of air! It'll be impressive to see at the very least.

We entertained the idea of a climbing-only 50-point robot that did everything with stored elastic energy. It's well doable given the design constraints, but we want to be able to shoot, too...

[mikegrundvig]

Originally Posted by pfreivald

That's a lot of air! It'll be impressive to see at the very least.

We entertained the idea of a climbing-only 50-point robot that did everything with stored elastic energy. It's well doable given the design constraints, but we want to be able to shoot, too...

It will be impressive if it works and spectacular if it fails As for the air volume, we are very lucky that one of our engineer mentors has done a great deal with hydraulics and pneumatics and was able to help us out. The math is really quite simple in the end and based on how it worked we ordered cylinders we felt would be adequate. The good news is that we were able to test them on Saturday and they match the math quite well so there is a pretty high degree of confidence on that part of it.

One thing to note. The new tiny compressor gets VERY hot and we blew an air line on the high-side (120 PSI) due to the hot air softening the tube. Pretty loud POP when it's 18" from your head. We also had another line blow out of the little quick disconnect fitting unexpectedly due to it being warm and a little bit of wiggling. This has made us gear the design in such a way as to reduce the amount of tubing as much as possible. Anyone interested in pneumatics should look at McMaster-Carr, they have some very nice fittings rated high enough for what we are doing that will also reduce the number of parts needed.

-Mike

[RonnieS]

How much room will your climber take? Does it still leave you room for a good shooter, feeder and/or ground pick up?

[stundt1]

Originally Posted by mikegrundvig

Our climber design is significantly faster than 15 seconds in it's raw form. In practice, we will likely slow it down to be closer to 15 seconds so it doesn't beat up the robot so much. It also takes up a lot of space on the robot so all our other components need to be well positioned.

Would you be able to share a video? If you dont mind me asking.