Where can we find good pneumatic wheels?

[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

[Peter Matteson]

Originally Posted by Aren_Hill

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

That's why we switched from pnuematic, we wanted to go to 4". We used to use 6" pnuematic on all our 4WD robots but when we went to 6WD we wanted smaller wheels.

FYI Our Custom wheels and tread have 100% chance of Einstien historically as well, and 50% chance of winning the Championship... (2006-08,2010)

[Gary Dillard]

How did you (everyone who has used pneumatic wheels) select an inflation pressure? I would think traction, drag and turning would be fairly sensitive to that. What kind of pressure range could you tolerate with adequate performance? How often do you check it / adjust it?

[Mark McLeod]

As far as pressure goes, it does make a decided difference.
We use 6" pneumatic tires on some robots. At full pressure the robot had more tendence to bounce. At lower pressures the grip was greater.
Too low and the tire might roll off the rim when it gets pushed sideways.

With the very small volume it can be an art to balancing the pressure in all tires. You need a pump with an integrated pressure gauge that disengages without letting even a smiggen of air out. Or you develop the skill required.

[Gary Dillard]

Originally Posted by Mark McLeod

With the very small volume it can be an art to balancing the pressure in all tires. You need a pump with an integrated pressure gauge that disengages without letting even a smiggen of air out. Or you develop the skill required.

Or you have a compressor with a regulator set to your desired pressure dedicated to inflating the tires.

[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

[akoscielski3]

Originally Posted by Joe Ross

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

Can someone post a link to these wheels, I can't find them at all!

Thankss

[caffel]

Skyway