Chief Delphi - Back for more..VEXpro 2014 Product Unveiling

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Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- General Forum (http://www.chiefdelphi.com/forums/forumdisplay.php?f=16)

- - Back for more..VEXpro 2014 Product Unveiling (http://www.chiefdelphi.com/forums/showthread.php?t=122129)

AlecS

11-12-2013 21:30

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by DampRobot (Post 1311018)

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

11-12-2013 21:38

Re: Back for more..VEXpro 2014 Product Unveiling

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

11-12-2013 21:43

Re: Back for more..VEXpro 2014 Product Unveiling

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

11-12-2013 21:44

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

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

11-12-2013 21:47

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by Electronica1 (Post 1311035)

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

I get a 404 (or similar) not found.

tim-tim

11-12-2013 21:49

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by Madison (Post 1311036)

I get a 404 (or similar) not found.

Do a right click and "Save As"

Ricky Q.

11-12-2013 21:53

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by Madison (Post 1311031)

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

11-12-2013 21:55

Re: Back for more..VEXpro 2014 Product Unveiling

Fixed on our site as well

DampRobot

11-12-2013 21:59

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by AllenGregoryIV (Post 1311034)

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

11-12-2013 22:05

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by Ricky Q. (Post 1311039)

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

Thanks! It's so cute.

Oblarg

11-12-2013 22:21

Re: Back for more..VEXpro 2014 Product Unveiling

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?

Andrew Lawrence

11-12-2013 22:24

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by Oblarg (Post 1311050)

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

11-12-2013 22:25

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by Andrew Lawrence (Post 1311051)

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.

11-12-2013 22:26

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by s_forbes (Post 1311012)

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

11-12-2013 22:26

Re: Back for more..VEXpro 2014 Product Unveiling

Quote:

Originally Posted by Paul Copioli (Post 1311010)

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?

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