pic: 148 Follower Wheel Assembly

[martin417]

Originally Posted by corpralchee

Why not use the larger omni wheel? It would get the wheel away from the gear more. Also the larger omni probably has a less likely chance of slipping...

This what we are doing. Not because of the slipping issue, but for "smoothness" of rotation. The large Vex omnis have two sets of rollers, offset to the sides for a smooth roll. The small ones would tend to go bumpity-bump as it transitions between the rollers. We thought the smoothness would be better for the encoders.

Very nice! But why such a big green gear? I'd have used a smaller gear and a similar green gear on the encoder. I am curious

Why gear at all? ours is a direct drive set-up.

[JVN]

Wow, maybe this was NOT worthy of showing off. Sounds like almost every team in FIRST has something "identical" or better back in their shop. Color me corrected.

-John

PS - Of course I was joking about starting my own company and selling these.

[Jonathan Norris]

Originally Posted by JVN

How much would you pay for one? I'm starting my own company KarthikJohn.

John that sounds like a lot of work for you... we all know Karthik isn't allowed to design anything that would actually go on a robot!

[Chris Fultz]

Originally Posted by JVN

How much would you pay for one? I'm starting my own company KarthikJohn.

Do you want to forge a partnership with CollinChris?

It's a family business. Right now we have no products, we just intend to steal good ideas from Chief Delphi posts and set up shop. Right now we are producing a cool wheel follower assembly that it appears you have copied... (our lawers will be contacting you for the patent infringement)

[Tom Line]

Originally Posted by JVN

Wow, maybe this was NOT worthy of showing off. Sounds like almost every team in FIRST has something "identical" or better back in their shop. Color me corrected.

-John

PS - Of course I was joking about starting my own company and selling these.

Well, if it makes you feel any better, we don't have all that fancy-smancy vex stuff, so ours looks gargantuan compared to yours.

[jgannon]

Originally Posted by JVN

Sounds like almost every team in FIRST has something "identical" or better back in their shop.

Just like all the roller claws "identical" to 1114's last year, right?

[BenB]

..

[AdamHeard]

Originally Posted by JVN

Wow, maybe this was NOT worthy of showing off. Sounds like almost every team in FIRST has something "identical" or better back in their shop. Color me corrected.

-John

Aww. I'm sure this will be the coolest looking follower wheel I'll see all year, "identical" in function isn't really identical. Last year we were "identical" in function to 987, but they were clearly better (in design, looks and performance).

Originally Posted by JVN

PS - Of course I was joking about starting my own company and selling these.

Aww. lame. Sometimes we can blinded by awesomeness.

[The Lucas]

Originally Posted by JVN

Wow, maybe this was NOT worthy of showing off. Sounds like almost every team in FIRST has something "identical" or better back in their shop. Color me corrected.

-John

PS - Of course I was joking about starting my own company and selling these.

Have you tested to see what percentage of your total robot traction the follower wheel represents? (like the GDC posted)

Originally Posted by GDC

The TEAM must be prepared to provide test data verifying that the maximum sensor traction is not more than 5% of the maximum traction of the ROBOT (acceptable validation methods would include test data logging total drawbar pull both with and without the sensor in place).

I am not saying that I think this will represent >5% of robot traction, I would be surprised if it did. I am only curious because my team has yet to test our Way-Better, Uber-Awesome follower wheel we build out of Joe's spare Vex parts

[Ben Piecuch]

John,

Are you running any sort of bushing on the vex shaft? Or, are you just letting it ride on the 1/8" hole in the ABS? (I'm having a hard time finding a flanged bushing for an 1/8" shaft)

Very pretty, thanks!

Bengineer
FRC1350

[Andrew Bates]

I bet they are just letting it ride in the hole. In the VEX system the bearings are just delrin with round holes so this plate essentially is the same thing.

[Rickertsen2]

I like it! Let us know what the accuracy of this turns out to be. A measuring wheel is something i always wanted to try. I'm assuming the remaining two holes are a pivot for this thing hang off of.

Just a word of warning about those greyhill encoders, they are very fragile and if subjected to remotely harsh conditions have a tendency to "go crunchy". Have a spare on hand.

[JVN]

Originally Posted by Ben Piecuch

John,

Are you running any sort of bushing on the vex shaft? Or, are you just letting it ride on the 1/8" hole in the ABS? (I'm having a hard time finding a flanged bushing for an 1/8" shaft)

Very pretty, thanks!

Bengineer
FRC1350

We're just running it in the ABS. VEX shaft is designed as a "rounded" square profile so it works great in that application.

-John

[Dan Richardson]

Every time I see a teaser/picture from 148 I feel like a tiny kitten who is lost in wonderment and amazement of the string spinning from the fan. I spend about 30 minutes pawing at the screen saying "I can haz?"

[5n1p3r]

wow,, thats awesome