VEX Robotics Relaunches VEXpro Product Line with over 120 New & Improved Products

[billbo911]

Originally Posted by Madison

I have a brief question that isn't really relevant given the delay in availability of the traction tires.

On the recent EWCP podcast, John talked a bit about trying different tread profiles and how he was surprised by the effectiveness of the 'W' pattern that's available on the VersaWheel. Why, then, do the traction tires available for the traction wheels have a different pattern and can you say which performs better than the other?

I believe the traction tires are not available this year.
http://www.chiefdelphi.com/forums/sh...&postcount=226

"Manufacturing issues". Hmmm, maybe a tread pattern redesign could be added.

[billbo911]

I ordered a pair of the Ball Shifters today, but immediately received an e-mail informing me

"Your order is On Hold due to extended lead time... "

So, does anyone have an idea how long it will be before they are actually shipped?

[Paul Copioli]

billbo911,

All orders will received prior to January 2nd will be shipped prior to FRC Kickoff. This does not mean you will receive the order before kickoff, but it will ship from our Greenville, Tx warehouse before FRC Kickoff.

Our facility has been closed since December 25th through January 1st, so we will be shipping out all VEXpro orders the first week of January.

Paul

[billbo911]

Originally Posted by Paul Copioli

billbo911,

All orders will received prior to January 2nd will be shipped prior to FRC Kickoff. This does not mean you will receive the order before kickoff, but it will ship from our Greenville, Tx warehouse before FRC Kickoff.

Our facility has been closed since December 25th through January 1st, so we will be shipping out all VEXpro orders the first week of January.

Paul

Thanks Paul!
I was hoping that might be the case.
Now I just need to be patient, not one of my stronger traits.

[tim-tim]

Originally Posted by Jared341

Yeah, a 5mm pitch, 15mm wide GT2 pulley (say 30 tooth? something big enough to have a 1.125 bore and VersaKeys) that was injection molded out of glass-filled nylon would be a fantastic addition. See what you've done to me VexPro...now all I want is more!

I couldn't agree more. Maybe an entire line up of them...

[MichaelBick]

Originally Posted by tim-tim

I couldn't agree more. Maybe an entire line up of them...

9mm wide would be nice too for all the non drive applications

[DampRobot]

Originally Posted by MICHAELABICK

9mm wide would be nice too for all the non drive applications

There's no problem using 9mm pulleys in the drive, given you do the math, and take a look at what worked in the past. 971 ran 9mm, 24 (or so) GT2 pulleys with 3.5" diameter, 2" wide wheels and a traction limited low gear. As far as I know, they never had any issues ratcheting. There are plenty of other threads discussing this, but the horsepower ratings Gates gives are conservative for FRC applications.

[JB987]

High Rollers' drive train has been rolling with PowerGrip GT 9mm for 6 years without any problems. We love em!

[R.C.]

Originally Posted by JB987

High Rollers' drive train has been rolling with PowerGrip GT 9mm for 6 years without any problems. We love em!

Joe,

What size pulley's have you ran?

-RC

[R.C.]

Originally Posted by JB987

High Rollers' drive train has been rolling with PowerGrip GT 9mm for 6 years without any problems. We love em!

Joe,

What size pulley's have you ran?

-RC

[Chris is me]

Originally Posted by DampRobot

There's no problem using 9mm pulleys in the drive, given you do the math, and take a look at what worked in the past. 971 ran 9mm, 24 (or so) GT2 pulleys with 3.5" diameter, 2" wide wheels and a traction limited low gear. As far as I know, they never had any issues ratcheting. There are plenty of other threads discussing this, but the horsepower ratings Gates gives are conservative for FRC applications.

According to the Google Doc that Adam Heard compiled, they had minor ratcheting issues.

If you use a LARGE pulley you can get away with 9mm, but there is very little penalty to stepping up to 15, and you will most certainly never ratchet if properly configured. Our design mandates smaller pulleys, so it's safer for us to go 15. Anyone with the guts (or foolishness ) to do a belt-in-tube system should probably go 15mm.

If you go 9mm, use GT / GT2 pulleys. HTD won't cut it.

[JB987]

Originally Posted by R.C.

Joe,

What size pulley's have you ran?

-RC

We use 36 tooth, 2.256 pd... can't wait to see what AndyMark came up with for kitbot drive train.

[Travis Schuh]

Originally Posted by DampRobot

971 ran 9mm, 24 (or so) GT2 pulleys with 3.5" diameter, 2" wide wheels and a traction limited low gear. As far as I know, they never had any issues ratcheting.

Chris Is Me is right, we did have some ratcheting issues, but these only showed up in the post season.

We ended up replacing all of the belts before Madtown. They all failed by the teeth falling off, a sign of under tensioning. Thankfully they failed in a graceful way (robot still drove, just slightly reduced performance) and it was moderately easy to replace the belts.

We are still figuring out what we will do next year. We are considering widening the belts if we have space, increasing pulley diameters if we have space, or just running with the same set up again because it lasted for 3 competitions.

-Travis

[ttldomination]

I was going over our potential order, and something ran across my mind,

Say I purchase a 3:1 ratio VersaPlanetary, and then realize that the 3:1 isn't enough of a drop. If I wanted the 10:1 ratio instead, can I just swap out the 3:1 gear sets for a 10:1 gear kit? Or will I have to use the 10:1 gearbox?

In theory, I ought to just be able to slap the 10:1 gear kit in there, but trying to be careful when ordering.

- Sunny G.

[ParkerF]

Originally Posted by ttldomination

I was going over our potential order, and something ran across my mind,

Say I purchase a 3:1 ratio VersaPlanetary, and then realize that the 3:1 isn't enough of a drop. If I wanted the 10:1 ratio instead, can I just swap out the 3:1 gear sets for a 10:1 gear kit? Or will I have to use the 10:1 gearbox?

In theory, I ought to just be able to slap the 10:1 gear kit in there, but trying to be careful when ordering.

- Sunny G.

It's my understanding that the VersaPlanetaries are hot-swappable. The front and end pieces remain constant with your motor and output shaft options. Meanwhile, everything in between can be added/removed as you wish.

The VersaPlanetary is a beautiful system in my eyes. The ease of versatility isn't matched in the market.

-Parker