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-   -   VEX Robotics Relaunches VEXpro Product Line with over 120 New & Improved Products (http://www.chiefdelphi.com/forums/showthread.php?t=109868)

JVN 09-12-2012 23:31

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

Originally Posted by JVN (Post 1199227)
4. Yes, the hexes will all be aligned with the VersaKey pattern in a common configuration. Mounting multiple hubs on the same wheel will "just work."

-John

All,
I've been updated on this -- though this was our original intent, it proved cost prohibitive to do this. The hexes and VersaKeys will NOT be consistently aligned.

-John

AdamHeard 09-12-2012 23:37

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

Originally Posted by JVN (Post 1200285)
All,
I've been updated on this -- though this was our original intent, it proved cost prohibitive to do this. The hexes and VersaKeys will NOT be consistently aligned.

-John

IF this is the case, what is your recomended method for mounting a 4x2 traction wheel live axle. A single hub?

thefro526 09-12-2012 23:39

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

Originally Posted by JVN (Post 1200285)
All,
I've been updated on this -- though this was our original intent, it proved cost prohibitive to do this. The hexes and VersaKeys will NOT be consistently aligned.

-John

John, Now that the hexes and Versakeys will not be consistently aligned, how would you recommend doing the following:



(Picture is of a gear being used on one side of a wheel, versakey on the other, just in case the photo gets removed/updated to reflect changes)

Would you replace one of the hex hubs with a bearing hubs and then rely on the gear's hex and VersaKeys to transmit Torque?

Andrew Lawrence 09-12-2012 23:40

Re: VEX Robotics Relaunches VEXpro Product Line with over 120 New & Improved Products
 
Do you plan on releasing different sizes and widths for the VersaWheels?

nahstobor 09-12-2012 23:51

Re: VEX Robotics Relaunches VEXpro Product Line with over 120 New & Improved Products
 
When will the CAD model of the Single Speed, single reduction transmissions be available?

JVN 09-12-2012 23:54

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

Originally Posted by AdamHeard (Post 1200286)
IF this is the case, what is your recomended method for mounting a 4x2 traction wheel live axle. A single hub?

A single hub is more than enough to transfer the torque. So I would recommend a single hub, and a hex bearing for piloting on the other side.

JVN 09-12-2012 23:57

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

Originally Posted by SuperNerd256 (Post 1200288)
Do you plan on releasing different sizes and widths for the VersaWheels?

Not for this season. We made the VersaWheel in a very universal size which we thought teams would use -- for other sizes we have the traction wheels:
http://www.vexrobotics.com/vexpro/wh...on-wheels.html

JVN 10-12-2012 00:00

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

Originally Posted by thefro526 (Post 1200287)
John, Now that the hexes and Versakeys will not be consistently aligned, how would you recommend doing the following:



(Picture is of a gear being used on one side of a wheel, versakey on the other, just in case the photo gets removed/updated to reflect changes)

Would you replace one the hex hub with a bearing hub and the rely on the gear's hex and VersaKeys to transmit Torque?

Yes, that's exactly what I'd do. The single gear is more than enough to transmit the torque. You may just need a pilot on the other side, depending on the width of the wheel.

-John

Aren_Hill 10-12-2012 00:11

Re: VEX Robotics Relaunches VEXpro Product Line with over 120 New & Improved Products
 
Turns out a 1/2" hex bearing on the other side to pilot is more cost effective than another hub anyways.

Paul Copioli 10-12-2012 03:01

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

Originally Posted by AdamHeard (Post 1200286)
IF this is the case, what is your recomended method for mounting a 4x2 traction wheel live axle. A single hub?

The hub designs are such that only one side needs a Versahub to transfer the torque. We initially intended that the hex would be timed to a certain VersaHub feature, but we quickly realized that we could not meet our pricing targets with such a requirement so we relaxed the requirement.

Our reasoning for relaxing the requirement was that since the full torque load could be taken by one hub, then a hex bearing can be used on the other side if you are worried about deflection. As it turns out, the bearing solution is less expensive for the customer anyway.

Paul

AdamHeard 10-12-2012 11:16

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

Originally Posted by Paul Copioli (Post 1200331)
The hub designs are such that only one side needs a Versahub to transfer the torque. We initially intended that the hex would be timed to a certain VersaHub feature, but we quickly realized that we could not meet our pricing targets with such a requirement so we relaxed the requirement.

Our reasoning for relaxing the requirement was that since the full torque load could be taken by one hub, then a hex bearing can be used on the other side if you are worried about deflection. As it turns out, the bearing solution is less expensive for the customer anyway.

Paul

Thanks. I wasn't worried about torque, but supporting the shaft on the other side. For some reason I thought the wheel bores were 1.25, not 1.125. What you and John suggest is a really clean solution, I like it.

Jared Russell 10-12-2012 11:35

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

Originally Posted by AdamHeard (Post 1200365)
Thanks. I wasn't worried about torque, but supporting the shaft on the other side. For some reason I thought the wheel bores were 1.25, not 1.125. What you and John suggest is a really clean solution, I like it.

It's also a great use for the handful of seized hex bearings we have collected through the years.

JVN 10-12-2012 11:45

Re: VEX Robotics Relaunches VEXpro Product Line with over 120 New & Improved Products
 
A few people asked about whether we would sell the shifter shafts independently. The answer is "yes" and they're already live on the site (linked from the kit contents section of the Ball Shifter page).

Short Output Shaft (w/ gears) -- as used in the 3-stage gearbox.
http://www.vexrobotics.com/vexpro/ge.../217-2793.html
Without gears... just the shaft:
http://www.vexrobotics.com/vexpro/ge.../217-2791.html

Long Output Shaft (w/ gears) -- as used in the 2-stage gearbox.
http://www.vexrobotics.com/vexpro/ge.../217-2792.html
Without gears... just the shaft:
http://www.vexrobotics.com/vexpro/ge.../217-2790.html

-John

Donut 10-12-2012 12:42

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

Originally Posted by JVN (Post 1200285)
All,
I've been updated on this -- though this was our original intent, it proved cost prohibitive to do this. The hexes and VersaKeys will NOT be consistently aligned.

-John

Does this apply to the 1/2" keyed hubs as well? I am assuming so but wanted to confirm anyway.

JVN 10-12-2012 13:07

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

Originally Posted by Donut (Post 1200467)
Does this apply to the 1/2" keyed hubs as well? I am assuming so but wanted to confirm anyway.

Yes, this applies to those.


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