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-   -   how many people have had failing jaguars (http://www.chiefdelphi.com/forums/showthread.php?t=72199)

Bill Tompkins 26-03-2009 21:24

Re: how many people have had failing jaguars
 
Two jaguars died. Both the same problem, burned out in one direction only.
Bill

clueless newbie 26-03-2009 22:24

Re: how many people have had failing jaguars
 
Team 3119 lost one Jag during build testing and our spare (reverse but no forward) during the games at Wayne State.

We're a rookie team with no funds --- (hey, we're doing good --- we own two screwdrivers and a "made-in-China" 1/4" drive ratchet set!). We got a teacher to put up $74 just so we could continue competing! Fortunately it paid off --- we made the semi-finals!

I certainly hope we can RMA the dead ones!

Carmine Rizzo 26-03-2009 22:35

Re: how many people have had failing jaguars
 
Ours failed in the last match of the qtr finals in Jersey.

Oblarg 27-03-2009 19:14

Re: how many people have had failing jaguars
 
We've wired them backwards and had them die. We've also had one or two spontaneously die with no noticeable cause.

I think we set a new team record this year for dead speed controllers. 4 victors and 5 jaguars, I think.

yodameister 27-03-2009 19:36

Re: how many people have had failing jaguars
 
We had another Jag die at FLR in week 2. Our bot took a hard hit on the side. Immediately after the hit, we had no movement from that side. The rep on site would have RMA'ed it immediately if he had more Jags with him at the competition.

Joe G. 27-03-2009 19:47

Re: how many people have had failing jaguars
 
We had one die for no obvious reason today. Worked in the pits, then once we got on the field, nothing. No light, good power, good pwm. Luckily, we had a spare already mounted and wired to the distribution block.

Jared Russell 27-03-2009 22:52

Re: how many people have had failing jaguars
 
2 Regionals, 27 regular matches, and over a dozen practice matches and all three of our Jags are still running strong.

Racer26 27-03-2009 23:51

Re: how many people have had failing jaguars
 
854 toasted one on the practice field minutes before a match 1075 was set to play against them in Waterloo... I helped them swap it. I wanted to beat them on the field, not off it. (We did... 64-30)

Liu_yiang 28-03-2009 00:36

Re: how many people have had failing jaguars
 
Ours died rather early in the build season. A stroke of luck, considering what I've been hearing and reading from other teams.

Tazlikesrobots 28-03-2009 11:52

Re: how many people have had failing jaguars
 
We had one fail during a match at the Dallas Regional. Thankfully our design incorporates a redunant system and we were able to continue in the match with one dead speed controller!

Jablonski@1250 28-03-2009 23:49

Re: just wondering
 
Ours failed at Cleveland- we we pulling x amount of current through them and for some reason they would shut down. The Luminary Microsystems rep couldn't offer an explanation why. This happened twice, so we pulled them and replaced them with victors and have not had a issue since.

Phil Ross 30-03-2009 17:56

Re: how many people have had failing jaguars
 
From what I understand a lot of people have been blowing up Jags this year. One cause that I heard was common was that when you sent either a 1 or -1 value from the joystick to the motor the jags would blow up. Although this was an easy problem to fix (just set the values to .99 and -.99) our team opted out of using the jags this year because this was all unknown and we figured "why not use the extra victors we have lying around while we still can."

Hope I could help:D

voteforandy1 21-02-2010 16:24

Re: how many people have had failing jaguars
 
Yeah, victors are smaller, and less breakable. But jags are smoother and offer so many more options.

waialua359 21-02-2010 18:33

Re: how many people have had failing jaguars
 
We blew out a jaguar after 5 tries using our winch to lift ourselves up.
Swapped it with a victor and no problems since then.:rolleyes:

Daniel_LaFleur 21-02-2010 18:37

Re: how many people have had failing jaguars
 
Quote:

Originally Posted by waialua359 (Post 925513)
We blew out a jaguar after 5 tries using our winch to lift ourselves up.
Swapped it with a victor and no problems since then.:rolleyes:

Do you have any explaination why, or is this just imperical data.

waialua359 21-02-2010 18:50

Re: how many people have had failing jaguars
 
Quote:

Originally Posted by Daniel_LaFleur (Post 925515)
Do you have any explaination why, or is this just imperical data.

We dont have any explanations other than the fact that after repeated tries, no problem since, all else the same.

RevusHarkings 23-02-2010 20:59

Re: how many people have had failing jaguars
 
We just blew one of our Jags about an hour ago. It started smoking, a part melted inside, and now it only drives in one direction. We'd rather not request a new one from TI, so if anyone from the GTA has a spare, we'd greatly appreciate it if you sent it our way.

Dad1279 24-02-2010 20:55

Re: how many people have had failing jaguars
 
Quote:

Originally Posted by RevusHarkings (Post 927504)
We just blew one of our Jags about an hour ago. It started smoking, a part melted inside, and now it only drives in one direction. We'd rather not request a new one from TI, so if anyone from the GTA has a spare, we'd greatly appreciate it if you sent it our way.

Why not request one? It is simple, they ship them quickly, and want the bad one back to analyze. And no cost to your team!

Frankly, I was 'down on Jags' until I sent 2 back, and experienced their tech support.

Tom Line 24-02-2010 21:46

Re: how many people have had failing jaguars
 
Revus - I'm not sure why you wouldn't want to send it back. They'll replace it for free with no hassle (unless you did something insane like drilled a hole through it).

Racer26 25-02-2010 10:14

Re: how many people have had failing jaguars
 
1075 smoked 3 Jags on ship day (Black Jags, too). Can't see any particular reason why. We're working on getting them replaced.

lynca 26-02-2010 00:31

Re: how many people have had failing jaguars
 
Quote:

Originally Posted by 1075guy (Post 928448)
1075 smoked 3 Jags on ship day (Black Jags, too). Can't see any particular reason why.

This peaked my interest since many teams are using Jags.
Few questions
What current / fuse were you using (40, 30, 20)?
Was the motor in stall ?
Were you cutting any metal near the Jags ?

We have backup victors from previous years just in case we fry a Jag

Akash Rastogi 26-02-2010 00:43

Re: how many people have had failing jaguars
 
Burnt out two jags after weeks on our practice robot. Thankfully we fully loaded our competition robot with good ol' VEXPro Victors..

Nickel5 26-02-2010 01:10

Re: how many people have had failing jaguars
 
Team 2472 has had jaguars fail in the final round of a regional. Once the robot was reset, they worked fine (This is most likely jaguars, but we're not positive). No changes were made to cause this.

We also had an experience of a jaguar break in the final round at a mock regional. No changes were made to cause this.

I emphasize finals to show that they were reliable up to that point so most likely it isn't an electrical or programming issue.

Jones571 26-02-2010 09:35

Re: how many people have had failing jaguars
 
Team 571 had a jag fail after just 15 minutes of driving on ship day. Normal use hooked up to a CIM not running at stall just smoked. We use a removeable electronics bord so no chips of any kind get into our electronics. We suffered a similar issue at BAE in he elims last year. Thinking about campaining to go back to good ol' Victors...

Kit Gerhart 04-03-2010 11:30

Re: how many people have had failing jaguars
 
We've had two Jaguars fail. With both of them, the lights were behaving normally going from solid red to solid green depending on control input, but they had no output to the motors. No smoke was involved; they just quick working.

flyguy93 04-03-2010 21:47

Re: how many people have had failing jaguars
 
We have had 3 jaguars fail on us. My advice is buy twice as many as you need

Mr. Lim 04-03-2010 23:00

Re: how many people have had failing jaguars
 
Now that TI has bought Luminary Micro, does anyone know who we contact to have our Jaguars RMA'ed?

Joe Ross 04-03-2010 23:28

Re: how many people have had failing jaguars
 
Quote:

Originally Posted by Mr. Lim (Post 931605)
Now that TI has bought Luminary Micro, does anyone know who we contact to have our Jaguars RMA'ed?

Follow the RMA procedure from http://www.luminarymicro.com/jaguar


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