pic: Spectrum 3847 - 2017 CAD Model: Gamma Ray

[Ryan Dognaux]

Originally Posted by flemdogmillion

That arm on the front stays inside the maximum robot volume, right? It looks like you're going with the tall dimension set, and it also looks like lowering that arm is against the rules.

It's Spectrum, I'm sure they're in the volume. These guys do their due diligence. You can lower an arm outside of your bumpers as long as it all stays within the appropriate robot volume.

Looking slick Allen!

[AllenGregoryIV]

The robot frame is a ~29in square making our dimensions with bumpers about 36" square. That gives us 4 inchs of room to extend past the bumpers. The mecanum intake and the gear intake both come close to the full extension limit but can't possibly break it.

And of course we are short. Top of the robot is 23.8in I believe but the student that's doing most of the shooter CAD can tell you for sure that we are under.

[fresh_prince]

Originally Posted by AllenGregoryIV

Top of the robot is 23.8in I believe but the student that's doing most of the shooter CAD can tell you for sure that we are under.

By my best memory we are ~23.97. I will update this post later in the evening if I'm way off.

[AllenGregoryIV]

[Michael Corsetto]

Allen,

Really cool bot, love what your team is doing with the open build/blog. Seems like a great learning experience for your team.

Whats the process for scoring the gear once in the gear holder?

Great work as always,

-Mike

[notmattlythgoe]

Originally Posted by Michael Corsetto

Allen,

Really cool bot, love what your team is doing with the open build/blog. Seems like a great learning experience for your team.

Whats the process for scoring the gear once in the gear holder?

Great work as always,

-Mike

They talk about some really good details of the gear intake here in the video.

[AllenGregoryIV]

Originally Posted by Michael Corsetto

Allen,

Really cool bot, love what your team is doing with the open build/blog. Seems like a great learning experience for your team.

Whats the process for scoring the gear once in the gear holder?

Great work as always,

-Mike

In our testing it hasn't been difficult to deliver the gear out of the intake by just reversing the roller, lowering the arm, and driving backwards once the spring has pierced the gear. We were hoping for a cleaner release but couldn't get the gemotry of our first system to a point we thought it would be robust enough for the whole season. We haven't tested this geometry on a rolling chassis yet and that will be one of the first things we do when parts come in next week.

I'd assume we will be iterating on the drop off portion all season to make it as fast as possible without compromising it's pickup speed and ability to securely hold the gear during high speed collisions.

[EricLeifermann]

What is your shooter drum made out of?

This is awesome, just wish my computer would load the step file so I could get into the model more.

[fresh_prince]

Originally Posted by EricLeifermann

What is your shooter drum made out of?

This is awesome, just wish my computer would load the step file so I could get into the model more.

The current version is 45A high-temperature silicone rubber tubing from McMaster, I believe 1" ID 1.25" OD, stretched around 1.25" aluminum tubing. We hope to Smith to some white 35A though to keep with our colour scheme (and maybe get some better grip on the ball).

[EricLeifermann]

Originally Posted by fresh_prince

The current version is 45A high-temperature silicone rubber tubing from McMaster, I believe 1" ID 1.25" OD, stretched around 1.25" aluminum tubing. We hope to Smith to some white 35A though to keep with our colour scheme (and maybe get some better grip on the ball).

We used that in our testing but it expanded too much. It looks like your're using a belted 2:1 reduction from a 775pro, have you not seen this expansion as well?

[lukekaiser]

Very nice. What is the upper appendage intended for?

[fresh_prince]

Originally Posted by lukekaiser

Very nice. What is the upper appendage intended for?

The roller with the mecanum wheel is our full-width fuel intake.

[RoboChair]

Originally Posted by fresh_prince

The roller with the Vectored Intake wheels is our full-width fuel intake.

Vectored intake wheels are the best.

[Cothron Theiss]

Originally Posted by RoboChair

Vectored intake wheels are the best.

So if "vectored intake wheels" are now a thing, does that mean we can add mecanum to the list of misspellings of mecanum-err-vectored intake wheels?

[Mecanum Wheel]

Originally Posted by Cothron Theiss

So if "vectored intake wheels" are now a thing, does that mean we can add mecanum to the list of misspellings of mecanum-err-vectored intake wheels?

NO.