Go to Post This game is absolutely *NOT* too difficult, but many teams will make it too difficult by biting off more than they can chew. - pfreivald [more]
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search: Posts Made By: JVN
Forum: General Forum 12-10-2016, 20:39
Replies: 31
Views: 3,185
Posted By JVN
Re: Achieving Consistency

1 - Full function prototypes.
You don't need to do this for everything, just the stuff you want to work.

2 - Hundreds of hours of consistency testing and tweaking.
The 148 unveil video from this...
Forum: Extra Discussion 26-01-2016, 14:30
Replies: 16
Views: 5,209
Posted By JVN
Re: paper: JVN's Mechanical Design Calculator 2016

Just posted an updated version:

Added RS-550 Motor Data which will be up on motors.vex.com (http://motors.vex.com)
Changed the Motor selection lookup formula on the "non VEXpro" sheets to better...
Forum: General Forum 04-01-2016, 23:58
Replies: 33
Views: 4,927
Posted By JVN
Re: Ballet of the Brain

Amazing, amazing, amazing job!
This video passes the "gives me goosebumps" test.

Kudos to everyone involved in its production. I love seeing stuff like this which captures the excitement of the...
Forum: General Forum 03-01-2016, 12:31
Replies: 14
Views: 1,951
Posted By JVN
Re: WCP vs Vex Ball Shifter

[Citation Needed]
Forum: Extra Discussion 27-12-2015, 23:29
Replies: 16
Views: 5,209
Posted By JVN
paper: JVN's Mechanical Design Calculator 2016

Thread created automatically to discuss a document in CD-Media.

JVN's Mechanical Design Calculator 2016 (http://www.chiefdelphi.com/media/papers/3188?) by JVN

This new version published for 2016...
Forum: General Forum 15-12-2015, 15:55
Replies: 125
Views: 23,522
Posted By JVN
Re: VEXpro 2016

Nemo,
jwfoss, cgmv123, and Aren Sikmeier nailed it.

I didn't mean to be unintentionally confusing, but the OTHER motors sold as part of VEXpro (which all happened to be sealed) are much more...
Forum: General Forum 14-12-2015, 23:29
Replies: 8
Views: 1,449
Posted By JVN
Re: FRC omni wheels

This is why we do the math.

The math:
http://www.chiefdelphi.com/media/papers/1443

This section of the VEX Robotics curriculum may also help explain some of the concepts behind your...
Forum: General Forum 14-12-2015, 23:21
Replies: 64
Views: 9,332
Posted By JVN
Re: FRC T-bone-ing and Hexagonal drive

This is entirely game dependent. Several teams were successful in 2014 using a 2+2 setup. Similarly safe zones in 2011, 2012, 2013 would have lent themselves well to this setup.

"Beat the...
Forum: General Forum 11-12-2015, 15:36
Replies: 59
Views: 8,278
Posted By JVN
Re: FRC pocketing

Jim,
Please provide some guidance to inexperienced teams on how to always design with the right material and right shape. ;)
Otherwise, perhaps withhold advice like your previous post as it might...
Forum: General Forum 11-12-2015, 12:45
Replies: 125
Views: 23,522
Posted By JVN
Re: VEXpro 2016

Sure thing, any team with (8) or more unused BB550 motors should email prosupport@vex.com

We're happy to test them.
Forum: General Forum 11-12-2015, 12:23
Replies: 125
Views: 23,522
Posted By JVN
Re: VEXpro 2016

This is a common request, but unfortunately when we went to purchase BB550's for testing, they were unavailable.
Forum: General Forum 10-12-2015, 16:19
Replies: 125
Views: 23,522
Posted By JVN
Re: VEXpro 2016

If you like stalling motors at 12V for that much time... perhaps I can interest you in one of our sealed-can motors? :)
Forum: Technical Discussion 09-12-2015, 00:57
Replies: 39
Views: 6,497
Posted By JVN
Re: Intake wheel motors

One of the mistakes teams commonly make is under powering intakes. If you've got an intake or conveyor belt, you want to put as much power on it as you can get away with.

Yes, the Mini CIM might be...
Forum: Technical Discussion 03-12-2015, 19:53
Replies: 9
Views: 2,014
Posted By JVN
Re: Wheel Spacing Ratios

Great whitepaper, or GREATEST whitepaper?
Everyone should read.
Forum: General Forum 02-12-2015, 07:42
Replies: 13
Views: 1,992
Posted By JVN
Re: Team 4592 Offseason Drivetrain

Looks good!

Are those side "pontoons" each one large piece? If so, the sheet-metal bending may be touch to accomplish. It is tricky to get a die into such a tall "U" section. If these do get bent,...
Forum: Extra Discussion 02-12-2015, 07:41
Replies: 1
Views: 822
Posted By JVN
Re: pic: 2015 Offseason 4592 Chassis CAD

Looks like the discussion for this one is here:
http://www.chiefdelphi.com/forums/showthread.php?p=1509247#post1509247

Learn from my mistake... Search before you post!
Forum: General Forum 20-11-2015, 14:15
Replies: 13
Views: 1,526
Posted By JVN
POLL: Champions League Opt-In

I've been very intrigued by the discussions happening about changing the nature of the...
Forum: General Forum 20-11-2015, 00:50
Replies: 158
Views: 17,023
Posted By JVN
Re: Mythical Six Week Build Season

Based on last year... Einstein or nothing, then? :)
Forum: General Forum 19-11-2015, 15:36
Replies: 69
Views: 7,126
Posted By JVN
Re: POLL: Six Week Build Season

The third option is just as enforceable as many other rules we have within this competition. There are myriad ways to cheat, but the ethos of the competition keep people in bounds.

FRC relies on...
Forum: General Forum 19-11-2015, 15:13
Replies: 158
Views: 17,023
Posted By JVN
Re: Mythical Six Week Build Season

As a supplement to this discussion, I posted a poll here:
http://www.chiefdelphi.com/forums/showthread.php?t=139390
Forum: General Forum 19-11-2015, 15:10
Replies: 69
Views: 7,126
Posted By JVN
POLL: Six Week Build Season

I think we've seen some fantastic discussion in the Six Week Build Season thread that Mr. Bill started: http://www.chiefdelphi.com/forums/showthread.php?threadid=139373

I like data. I thought a...
Forum: General Forum 18-11-2015, 17:21
Replies: 158
Views: 17,023
Posted By JVN
Re: Mythical Six Week Build Season

I'd be 100% in favor of eliminating "bag day" and shifting to a "kickoff-to-competition" schedule. We'd do less work, be less stressed, and consume less resources while probably providing a better...
Forum: Team Organization 15-11-2015, 17:12
Replies: 22
Views: 4,130
Posted By JVN
Re: Why Do Teams Succeed

How do you get those things?
Forum: General Forum 28-10-2015, 17:46
Replies: 34
Views: 5,492
Posted By JVN
Re: [FRC Blog] International Teams -- Game Piece Option

Please give this to US teams also. Please. Please please please.
We will send cheesecake.
Forum: Extra Discussion 01-10-2015, 10:36
Replies: 13
Views: 3,682
Posted By JVN
Re: pic: Off-Season Custom Wheel

Looks good!

What material are you looking at making these out of?
If you're thinking aluminum -- I suspect the hub in the center is over-designed.
If you're thinking plastic -- I suspect the...
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