Prototype Small Wheeled Shooter

[AllenGregoryIV]

We just posted a blog entry about our current prototype shooter. It uses much smaller diameter wheels than many teams that we have seen post of CD. We're hoping this idea might inspire some teams that are struggling to package their large shooters.

Blog Entry with full specs on the shooter configuration.

Youtube Video

[frcchile]

Good shooter!! what motors do you have?

[AllenGregoryIV]

Originally Posted by frcchile

Good shooter!! what motors do you have?

The blog entry has the full specs for the prototype. The two motors are a BB550 and a BAG motor.

[James1902]

Well...this is kinda awesome.

[dodar]

Originally Posted by AllenGregoryIV

We just posted a blog entry about our current prototype shooter. It uses much smaller diameter wheels than many teams that we have seen post of CD. We're hoping this idea might inspire some teams that are struggling to package their large shooters.

Blog Entry with full specs on the shooter configuration.

Youtube Video

You sir, have just lightened up alot of robots.

[Ether]

Originally Posted by AllenGregoryIV

Blog Entry with full specs on the shooter configuration.

Try slowing that second motor down (the BAG motor) . Try running it at ~10 volts.

See what happens. Easy enough to do.

[EricLeifermann]

So you're actually spinning the 2nd wheel slower than the 1st. What made you decide to do that? Seems everyone is making the 2nd wheel spin faster than the 1st.

[Ether]

Originally Posted by EricLeifermann

So you're actually spinning the 2nd wheel slower than the 1st.

Read the blog again. He is spinning the 2nd wheel FASTER than the 1st.

1st wheel 550 geared 10:1 = 1,930 free rpm

2nd wheel BAG geared 1:1 = 14,000 free rpm

[EricLeifermann]

Originally Posted by Ether

Read the blog again. He is spinning the 2nd wheel FASTER than the 1st.

1st wheel 550 geared 10:1 = 1,930 free rpm

2nd wheel BAG geared 1:1 = 14,000 free rpm

You are correct, I read the 14000 on the chart provided by FIRST as 1400.

I withdraw my question.

[ParkerF]

Allen,

This is great work! I admire your lack of hesitation to give away this information. Shows you and your team's true colors.

Thanks and good luck at making it even better!

-Parker

P.S. - Have you tried shooting from the floor? What kind of angle do you expect to have to pitch the shooter to for the 3pter?

[Robo Hamsters]

Originally Posted by AllenGregoryIV

We just posted a blog entry about our current prototype shooter.

Just wondering how you set the one gearbox to be a 1:1 ratio?

Also, anyone have any ideas as to how you mount the banebots wheels directly to a CIM?

Thanks

[Botwoon]

Originally Posted by Robo Hamsters

Just wondering how you set the one gearbox to be a 1:1 ratio?

Also, anyone have any ideas as to how you mount the banebots wheels directly to a CIM?

Thanks

On their blog they explained that they used a Versaplanetary box with all of the gears within removed. The output shaft of the VP boxes are the same hex as the banebots wheels.

[Robo Hamsters]

Thanks, didn't see that there.

Also we were wondering how you direct drive the banebots wheels with a CIM.

[Tom Line]

Originally Posted by Robo Hamsters

Thanks, didn't see that there.

Also we were wondering how you direct drive the banebots wheels with a CIM.

The reason they are using the versa may be because the output shaft on a versa is actually a .5 hex, which is an ID that banebots sells their wheels with.

Locking a stage in a planetary gear is fairly simple - look up how people did it with globe motors. It involves glueing the sun gear and planetaries together with something, then dremeling off the teeth of the planetaries so they don't touch the ring gear.

FYI, you can't really be guaranteed that you can direct drive a banebots with a cim without installing an insert and broaching it with a keyway. The unfinished bores on the banebots wheels are not actually a measured diameter: it varies. They ream it to .375, but in most cases it comes bigger than the 8mm shaft of a cim from their manufacturer, and hence will not work directly on a cim.

[IndySam]

Originally Posted by Robo Hamsters

Thanks, didn't see that there.

Also we were wondering how you direct drive the banebots wheels with a CIM.

8mm 500 Hex Adapter Shaft (am-0588)