pic: 7.5" tall robot, ready to shoot

[asid61]

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[Kevin Leonard]

So would this theoretical robot be able to cross under the low bar while holding a ball? It seems like in order to do anything useful it needs to be in the taller position.

[SenorZ]

I like it.
I brought up a "collapsing" shooter idea after build season, as a side project.
My team all shook their heads.

[Chris is me]

Is there anything locking the shooter in position when it is in the firing position? It seems at least plausible that the ball being forced into the shooter could cause the shooter to give a little bit while firing, and generally you want all the rigidity you can get with such a system for consistency reasons.

I like the intake and shooter articulating together as it probably adds a lot of consistency to the ball loading.

Just curious - how are you avoiding this mechanism tangling with the battery cable when it folds up?

[asid61]

Originally Posted by Kevin Leonard

So would this theoretical robot be able to cross under the low bar while holding a ball? It seems like in order to do anything useful it needs to be in the taller position.

100%. As long as the hood is down (which it is as long as its not shooting the ball) the robot can go under the low bar with ease.

Originally Posted by SenorZ

I like it.
I brought up a "collapsing" shooter idea after build season, as a side project.
My team all shook their heads.

I'm surprised more teams didn't go with the 4-bar. It made it very easy to fit into a tiny envelope. If I had 16" to work with I could can done everything very easily indeed.

Originally Posted by Chris is me

Is there anything locking the shooter in position when it is in the firing position? It seems at least plausible that the ball being forced into the shooter could cause the shooter to give a little bit while firing, and generally you want all the rigidity you can get with such a system for consistency reasons.

I like the intake and shooter articulating together as it probably adds a lot of consistency to the ball loading.

Just curious - how are you avoiding this mechanism tangling with the battery cable when it folds up?

The shooter can brace against the bumper while shooting. The bumpers are the biggest things on the 'bot, so I did not include them in the very nice render.

Battery cable- whats that? I see no cables...
Realistically though, the battery wires can easily just go down the sides of the battery without hitting anything or risking a nasty break.

[edesirim]

According to the rules, the ball has a diameter of 10". I just wanted to know if the intake folds up or something and the robot chassis itself? Just a clarifying question.

[asid61]

Originally Posted by edesirim

According to the rules, the ball has a diameter of 10". I just wanted to know if the intake folds up or something and the robot chassis itself? Just a clarifying question.

The intake folds up so that the robot can be 7.5" tall. I couldn't find a good way to keep it short and have a good intake while the ball is in the bot.

[ThaddeusMaximus]

Love the battery packaging.

[Jeremy Germita]

I don't see any clearance for a tube fitting on your hood cylinders(picture). As it stands, you'll only be able to supply air to the retract side of the cylinder. It looks like you might have enough room to just space your shooter bearing plates a little more to clear a fitting, but I haven't looked at the CAD closely enough to see if this is possible.

Other than that, I really like the usage of the four-bar. I love seeing neat linkages on robots.

[asid61]

Originally Posted by ThaddeusMaximus

Love the battery packaging.

Thank you, I was very pleased with it too.

Originally Posted by Jeremy Germita

I don't see any clearance for a tube fitting on your hood cylinders(picture). As it stands, you'll only be able to supply air to the retract side of the cylinder. It looks like you might have enough room to just space your shooter bearing plates a little more to clear a fitting, but I haven't looked at the CAD closely enough to see if this is possible.

Other than that, I really like the usage of the four-bar. I love seeing neat linkages on robots.

Nooooo does this mean I have to re-render!?
I think I can push the mounting plates out by another 3/8" at least, or add a hole to allow the fitting in.
Thank you!

[Greg Woelki]

Originally Posted by asid61

Nooooo does this mean I have to re-render!?
I think I can push the mounting plates out by another 3/8" at least, or add a hole to allow the fitting in.

A simpler option might be to use the 90 degree rotated ports version of the cylinder (Bimba offers this for their rear pivot cylinders, I'd imagine other manufacturers do as well).

[asid61]

Originally Posted by Greg Woelki

A simpler option might be to use the 90 degree rotated ports version of the cylinder (Bimba offers this for their rear pivot cylinders, I'd imagine other manufacturers do as well).

Given that it's already a custom 3.6" stroke cylinder, this is a great option actually.