Back for more..VEXpro 2014 Product Unveiling

[AlecS]

Originally Posted by DampRobot

On some of the DS ratios, how come both the 6" and 4" wheel have the same loaded speed?

This is because "loaded" gear ratios were calculated over distance of 50ft, the longest a robot would typically have to accelerate in FRC. When geared extremely fast, the 6" wheel draws so much current it cant get up to speed in that distance, so we capped the speeds at 21.5 FPS.

On the speed charts on the WCP site there are some notes about this, and we hope to have a speed calculator up on our website shortly to help teams understand these speeds better.

[Madison]

When do y'all expect to have CAD models for the 4" mecanum wheels available? The page was updated, but there are no new models.

[AllenGregoryIV]

Versaframe is using #8 hardware and 5/32 rivets. Might be time for us to consider stepping down from #10 & 3/16" rivets.

We used a similar system in 2012 but drilled each hole by hand on our drill press and cut every gusset on a bandsaw. This seems like a much easier option.

[Electronica1]

When do y'all expect to have CAD models for the 4" mecanum wheels available? The page was updated, but there are no new models.

You can find cad models here
http://www.wcproducts.net/mecanum-wheel/

[Madison]

Originally Posted by Electronica1

You can find cad models here
http://www.wcproducts.net/mecanum-wheel/

I get a 404 (or similar) not found.

[tim-tim]

Originally Posted by Madison

I get a 404 (or similar) not found.

Do a right click and "Save As"

[Ricky Q.]

Originally Posted by Madison

When do y'all expect to have CAD models for the 4" mecanum wheels available? The page was updated, but there are no new models.

Up on this page now: http://www.vexrobotics.com/vexpro/wh...um-wheels.html

[AlecS]

Fixed on our site as well

[DampRobot]

Originally Posted by AllenGregoryIV

Versaframe is using #8 hardware and 5/32 rivets. Might be time for us to consider stepping down from #10 & 3/16" rivets.

We used a similar system in 2012 but drilled each hole by hand on our drill press and cut every gusset on a bandsaw. This seems like a much easier option.

I was planning on just having people drill the holes out. #10 screws and 3/16" rivets are a better size for FRC IMO, but I'm glad that VP is giving people choices. It's a ton easier to drill out than to figure out some way to use a smaller fastener for an application where it may not be the right choice.

[Madison]

Originally Posted by Ricky Q.

Up on this page now: http://www.vexrobotics.com/vexpro/wh...um-wheels.html

Thanks! It's so cute.

[Oblarg]

I am pleased to see that pretty much everything I listed in my wish-list earlier in the thread is being sold.

The new HTD pulleys are a very welcome addition. That said, I do wish there were more VersaPulley sizes, and that there were cheaper (and lighter) plastic versions of the small hex-bore pulleys. Maybe in the future?

Originally Posted by Oblarg

I am pleased to see that pretty much everything I listed in my wish-list earlier in the thread is being sold.

The new HTD pulleys are a very welcome addition. That said, I do wish there were more VersaPulley sizes, and that there were cheaper (and lighter) plastic versions of the small hex-bore pulleys. Maybe in the future?

When you use pulleys in your drivetrain, they need to be able to withstand constant usage and tension, so plastic wouldn't work too well with those.

[Oblarg]

Originally Posted by Andrew Lawrence

When you use pulleys in your drivetrain, they need to be able to withstand constant usage and tension, so plastic wouldn't work too well with those.

Are you sure? The plastic AndyMark ones held up marvelously this past year.

[Ricky Q.]

Originally Posted by s_forbes

Very interesting, I haven't come across this concept before. I can't seem to locate a pinion gear section on the new site, but I will be buying some when they're up.

Up now here: http://www.vexrobotics.com/vexpro/ge...tor-gears.html

[sanddrag]

Originally Posted by Paul Copioli

Nope, just profile shift. Used to be called addendum modification. We also have a 13T pinion that fits in the same center distance as a 14T.

I don't understand this one bit, but I'd like to. Is there a more in depth or perhaps visual explanation?