Where can we find good pneumatic wheels?

[gilkeedman]

Me and my team trying to learn about good and diffrent drivetrains than those we used in the past few years and we want to see more about pneumatic wheels (for example 1114 wheels at 2010)

so those anybody can help us to find good pneumatic wheels?

[Joe Ross]

50% of the time that 330 used mcmaster 2717T51, we went to Einstein. Your mileage may vary.

[JesseK]

"You must spread some Reputation around before giving it to Joe Ross again."

That's an awesome stat Joe.

[BrendanB]

Originally Posted by Joe Ross

50% of the time that 330 used mcmaster 2717T51, we went to Einstein. Your mileage may vary.

Wow, just wow!

[EricH]

It should also be noted that:
1) Said wheel does need some hub modifications to use in FRC--the stock hub configuration has a hard time with attaching a sprocket.
2) Spare tires are a must if you do drive practice. A lot of those tires showed red (and inner lining) by the end of the season, and the batteries were constantly on the charger due to the amount of drive practice put on them.

[Yalib]

Originally Posted by Joe Ross

50% of the time that 330 used mcmaster 2717T51, we went to Einstein. Your mileage may vary.

I'm also a member of 2630,
We checked out the mcmaster wheel and it looks really good, Do you know if this wheel has a tenon slot?

[EricH]

You mean a keyway? Not stock--you'll have to modify the hub. It's designed to be used as a caster (unpowered), so any powered use needs modification.

[topgun]

Originally Posted by EricH

It should also be noted that:
1) Said wheel does need some hub modifications to use in FRC--the stock hub configuration has a hard time with attaching a sprocket.

Any pictures or drawings of how you did the hub modification? Did you actually modify the hub or fabricate an adapter between the hub and the sprocket.

[EricH]

Originally Posted by topgun

Any pictures or drawings of how you did the hub modification? Did you actually modify the hub or fabricate an adapter between the hub and the sprocket.

I forget how we did it in 2005, but the hub itself is 3-4 pieces. 2 of them are rims, sandwiched between hub pieces. The hub pieces get modified/replaced.

In 2006-2008, we used a custom adapter to hold the rims in place, and a spacer to keep the sprockets separate. I don't have plans or pictures readily available; ShaneP might have some better ones.

Oh, and using 6 of these wheels on a 6WD is asking for turning problems, even with a dropped center wheel.

[Aren_Hill]

Originally Posted by Joe Ross

50% of the time that 330 used mcmaster 2717T51, we went to Einstein. Your mileage may vary.

I got yelled at when i stated those sort of statistics, something about sample size, only mine was even more restricted than yours,

"6wd swerves have a 100% chance of einstein historically"

on topic:

I wish someone made a good 4" pneumatic wheel

[Jay TenBrink]

The pneumatic tires on 494, 70, (and of course 469 on Einstein this year)were from MBS Mountainboards. They were an 8" knobby black rubber tube tire with a glass filled nylon hub. They are intended to be used on, get this, mountain boards.

We've used the same tires / hubs several years and never had a flat or a broken hub. I think these are far superior to any wheel/tire made for FIRST robots. Of course the tread will wear down, but we've been able to get through a season before we've completely destroyed a set.

MBS is located in Colorado Spring, CO. They have fair prices and good delivery. You'll see on their website a beautiful looking set of 6061-T6 aluminum hubs. I think this is what the fashionable robots will be wearing this season. Be a sport and wait till I order mine so they don't run out

http://www.mbs.com/

Jay

[AdamHeard]

Originally Posted by Joe Ross

50% of the time that 330 used mcmaster 2717T51, we went to Einstein. Your mileage may vary.

Are those the same wheels 1114 used?

[Jay TenBrink]

Originally Posted by AdamHeard

Are those the same wheels 1114 used?

Yes

[topgun]

Originally Posted by EricH

Oh, and using 6 of these wheels on a 6WD is asking for turning problems, even with a dropped center wheel.

What kind of turning problems? Slow, or bumping, or fuse blowing?

Or are you saying you don't use 6 of these wheels on a 6WD?

How do you overcome the turning problems?

[Hawiian Cadder]

http://www.radioflyer.com/22w-0642699.html?sid=5

with slight modification these work pretty well. they are light and durable as well.

in past years my team has mad an axle with a disk on it, then the radio flyer wheel is bolted to the disk in a similar manner as a car wheel.