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  #166   Spotlight this post!  
Unread 12-12-2013, 16:08
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Re: Back for more..VEXpro 2014 Product Unveiling

Quote:
Originally Posted by apples000 View Post
Yup, my bad. I see what you mean about space for the plate sprockets. That being said, if you used a little sprocket that had the dog pattern in it, you could probably get away with this.
That limits the versatility of it.

When selling a COTS part you have a different set of goals than a team.

It's not surprising that someone could make a 3 CIM w/ PTO gearbox smaller and lighter than vex, but it will likely only fit a few situations. Vex/WCP must sell a gearbox that will work for as many as possible. I feel they've done a great job o this.
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Unread 12-12-2013, 16:36
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Re: Back for more..VEXpro 2014 Product Unveiling

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Originally Posted by AdamHeard View Post
That limits the versatility of it.

When selling a COTS part you have a different set of goals than a team.

It's not surprising that someone could make a 3 CIM w/ PTO gearbox smaller and lighter than vex, but it will likely only fit a few situations. Vex/WCP must sell a gearbox that will work for as many as possible. I feel they've done a great job o this.
You're right. I just came from designing a 3 CIM PTO gearbox with a 22 tooth pulley for the PTO, so I was comparing with that, but I'd be willing to bet that 90% of teams purchasing that gearbox will end up using some type of versa hub product with it.
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Unread 12-12-2013, 17:19
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Re: Back for more..VEXpro 2014 Product Unveiling

So i was looking at the new wcp 3 cim (not the ball shifter) I saw that the two lower cims both drive one gear and then the third (top) cim drives the same gear but with a gear between, wouldnt this mean that the top cim is contributing less/more then the other two?
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Unread 12-12-2013, 17:32
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Re: Back for more..VEXpro 2014 Product Unveiling

Quote:
Originally Posted by Boe View Post
So i was looking at the new wcp 3 cim (not the ball shifter) I saw that the two lower cims both drive one gear and then the third (top) cim drives the same gear but with a gear between, wouldnt this mean that the top cim is contributing less/more then the other two?
No, the presence of the 30t idler does not affect the reduction or the overall contribution of the top CIM. See below,

2 CIM input ratio,
42 / 14 = 3

3rd CIM input ratio.
(30/14)*(42/30) = 3

At the 42t input gear, all of the CIM's have gone through the same reduction.

Hopefully this clears things up.
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Unread 12-12-2013, 17:36
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Re: Back for more..VEXpro 2014 Product Unveiling

Will CAD models be released for the traction wheel traction tires? I know my team is looking at those as an alternative to tread.
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Unread 12-12-2013, 17:42
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Re: Back for more..VEXpro 2014 Product Unveiling

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Originally Posted by cadandcookies View Post
Will CAD models be released for the traction wheel traction tires? I know my team is looking at those as an alternative to tread.
Fixed, the CAD is now available here.
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Unread 12-12-2013, 17:44
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Re: Back for more..VEXpro 2014 Product Unveiling

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Originally Posted by AlecS View Post
Fixed, the CAD is now available here.
Thank you!
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Unread 12-12-2013, 20:48
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Re: Back for more..VEXpro 2014 Product Unveiling

The VersaWheel page doesn't list a weight for either of the wheels; anyone know what the weight is?
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Unread 12-12-2013, 21:19
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Re: Back for more..VEXpro 2014 Product Unveiling

Quote:
Originally Posted by Oblarg View Post
The VersaWheel page doesn't list a weight for either of the wheels; anyone know what the weight is?
The weights listed here , when you select a wheel, are accurate to the CAD models. We will add the weights to the specs list for easier viewing shortly.
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Last edited by AlecS : 12-12-2013 at 21:24.
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Unread 12-12-2013, 21:24
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Re: Back for more..VEXpro 2014 Product Unveiling

I' getting a 404 clicking the link in your post.
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Unread 12-12-2013, 21:25
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Re: Back for more..VEXpro 2014 Product Unveiling

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Originally Posted by z_beeblebrox View Post
I' getting a 404 clicking the link in your post.
Fixed.
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Unread 12-12-2013, 21:46
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Re: Back for more..VEXpro 2014 Product Unveiling

Just a question specifically about the WCD gearbox with PTO offered a VexPro, from someone who has never used a PTO before.

What if you want to operate the PTO without running the wheels? I would think you would want to run the PTO while not moving in many more situations than you would want to while rolling.
Studying the CAD, I am fairly certain this is not possible.
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Unread 12-12-2013, 21:52
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Re: Back for more..VEXpro 2014 Product Unveiling

Quote:
Originally Posted by BBray_T1296 View Post
Just a question specifically about the WCD gearbox with PTO offered a VexPro, from someone who has never used a PTO before.

What if you want to operate the PTO without running the wheels? I would think you would want to run the PTO while not moving in many more situations than you would want to while rolling.
Studying the CAD, I am fairly certain this is not possible.
I'm not sure if this was intended with the design, but you should be able to find a 3-position cylinder to put on the bottom dog, letting you shift the drivetrain into a neutral gear (with the dog disengaged, between the two dog gears) when you want to engage the PTO.
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Unread 12-12-2013, 22:01
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Re: Back for more..VEXpro 2014 Product Unveiling

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Originally Posted by smistthegreat View Post
I'm not sure if this was intended with the design, but you should be able to find a 3-position cylinder to put on the bottom dog, letting you shift the drivetrain into a neutral gear (with the dog disengaged, between the two dog gears) when you want to engage the PTO.
Oh yeah! I just remembered another thread wondering if there was a neutral for the ballshifter, and there was a link to the piston Im sure you are talking about. Thanks
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Unread 12-12-2013, 22:19
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Re: Back for more..VEXpro 2014 Product Unveiling

Killer products. Can wait to get my hands on some of them!
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