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Burnt Motors since 2012

samthesnake

By: samthesnake
New: 06-04-2018 08:47 PM
Updated: 06-05-2018 10:52 AM
Views: 1502 times


Burnt Motors since 2012

@MarshallHiveMind can we be friends now? This is all our faulty motors from the beginning of time!

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06-04-2018 09:06 PM

marshall


Unread Re: pic: Burnt Motors since 2012

#photosThatSmell



06-04-2018 09:18 PM

NerdRage


Unread Re: pic: Burnt Motors since 2012

I'm going to have to call the Motor Abuse Police on you. Those poor 775pros...



06-04-2018 09:20 PM

Kyle Warren


Unread Re: pic: Burnt Motors since 2012

the addition of the red tape to the 775 motors makes them redline motors, right?



06-04-2018 09:41 PM

Nemo


Unread Re: pic: Burnt Motors since 2012

The pile would be larger if you had started a year earlier.
https://www.chiefdelphi.com/media/photos/39055



06-04-2018 09:44 PM

Chris_Elston


Unread Re: pic: Burnt Motors since 2012

Where are all the mini-bot motors from 2011? That should have at-least DOUBLED your collection....



06-05-2018 07:10 AM

ttnn58


Unread Re: pic: Burnt Motors since 2012

i think you guys might be doing something wrong



06-05-2018 08:34 AM

samthesnake


Unread Re: pic: Burnt Motors since 2012

Well we used 775 Pro drivetrains the previous 2 seasons. I blame the programmers. /s



06-05-2018 08:39 AM

SenpaiYoshi


Unread Re: pic: Burnt Motors since 2012

Kind of Impressed you burnt a CIM Motor, what did you do to burn them?



06-05-2018 09:11 AM

Karibou


Unread Re: pic: Burnt Motors since 2012

My wallet hurts just looking at that picture.



06-05-2018 09:50 AM

AriMB


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by Karibou View Post
My wallet hurts just looking at that picture.
By my count that's about $800 in burned motors. Ouch!



06-05-2018 10:10 AM

samthesnake


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by AriMB View Post
By my count that's about $800 in burned motors. Ouch!
Full disclosure: not all were burnt. Some just have broken leads, and some were ruined in press fits pressed too close to the motor. Mini Cims and 15T press fit pinions did not play well.



06-05-2018 10:21 AM

marshall


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by samthesnake View Post
Mini Cims and 15T press fit pinions did not play well.
Not at all. Not so much chocolate and peanut butter with these two.



06-05-2018 11:02 AM

Rosiebotboss


Unread Re: pic: Burnt Motors since 2012

What are you doing to those poor CIMs? I have had exactly 1 CIM failure since the beginning of time. (When were they introduced, 2004?) And that failed because it was dropped and the magnet broke.



06-05-2018 11:07 AM

samthesnake


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by Rosiebotboss View Post
What are you doing to those poor CIMs? I have had exactly 1 CIM failure since the beginning of time. (When were they introduced, 2004?) And that failed because it was dropped and the magnet broke.
Weíve overtightened and bent the casings before. We have also damaged a few when pressing on pinions. We will red tag it if it doesnít feel right or gets abnormally hot running in free speed. I believe one started smoking randomly after running it for 30 minutes in a recently greased gearbox. Iíve also only been around since 2015, and some of them are of totally unknown origin.



06-05-2018 11:07 AM

samthesnake


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by Kyle Warren View Post
the addition of the red tape to the 775 motors makes them redline motors, right?
Hence why we donít use redlines.



06-05-2018 11:45 AM

marshall


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by samthesnake View Post
Hence why we donít use redlines.
But how can you tell the difference between your practice and competition robots without them?



06-05-2018 11:53 AM

Jamie Kalb


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by Rosiebotboss View Post
What are you doing to those poor CIMs? I have had exactly 1 CIM failure since the beginning of time. (When were they introduced, 2004?) And that failed because it was dropped and the magnet broke.
In 2010 my team smoked two CIMs. Our robot had a 4-CIM drivetrain, but as a rookie team with limited resources, we went with only 2 CIMs in the practice bot's drive. And we practiced hard. We ran for 5-10 minutes at a time, rested just long enough that the motors were no longer hot to the touch and we had a charged battery, then ran again. We did this for hours, until the telltale smell of magic smoke filled the field. Both CIMs were toast. Needless to say, not exactly proper operation. Would not recommend.



06-05-2018 11:59 AM

MechEng83


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by Jamie Kalb View Post
In 2010 my team smoked two CIMs. Our robot had a 4-CIM drivetrain, but as a rookie team with limited resources, we went with only 2 CIMs in the practice bot's drive. And we practiced hard. We ran for 5-10 minutes at a time, rested just long enough that the motors were no longer hot to the touch and we had a charged battery, then ran again. We did this for hours, until the telltale smell of magic smoke filled the field. Both CIMs were toast. Needless to say, not exactly proper operation. Would not recommend.
Burnt CIMs are a special kind of acrid. *shudder*



06-05-2018 01:08 PM

Lil' Lavery


Unread Re: pic: Burnt Motors since 2012

Someone posted a link to a Reddit discussion of "What Can $800 Buy in Your Hobby" in one of the Robotics facebook groups I'm in the other day. This is a tragic answer to that question.



06-05-2018 03:08 PM

samthesnake


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by marshall View Post
But how can you tell the difference between your practice and competition robots without them?
Oh thatís easy. The one with the straight frame thatís also blue is the one we compete with.



06-05-2018 05:56 PM

troy_dietz


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by Lil' Lavery View Post
Someone posted a link to a Reddit discussion of "What Can $800 Buy in Your Hobby" in one of the Robotics facebook groups I'm in the other day. This is a tragic answer to that question.
If this was Battlebots (heavyweights), it would be two, maybe three motors.



06-06-2018 02:39 PM

FrisbeeFunTime


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by troy_dietz View Post
If this was Battlebots, it would be two, maybe three motors.
Depends on the weight class. I use rs775 pros in my 30lb so $800 would get my robot a lot of motors.



06-06-2018 04:01 PM

RoboChair


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by MechEng83 View Post
Burnt CIMs are a special kind of acrid. *shudder*
We once took apart a BAG motor that we completely smoked, wouldn't even spin. That is the only thing I have ever smelled that nearly made me throw up. It was a close call.

Friends don't let friends smell smoked BAGs.



06-06-2018 11:01 PM

DavidStreit


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by troy_dietz View Post
If this was Battlebots (heavyweights), it would be two, maybe three motors.
in the real battle-bots $800 bucks won't even buy one motor many times and if it will it is exactly one motor. check out npc and ampflow motors at http://www.robotmarketplace.com/motors_main.html to see what they use



06-06-2018 11:24 PM

troy_dietz


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by DavidStreit View Post
in the real battle-bots $800 bucks won't even buy one motor many times and if it will it is exactly one motor. check out npc and ampflow motors at http://www.robotmarketplace.com/motors_main.html to see what they use
Ampflows run from $300 to $400 or so, and Magmotors are the same. The more expensive NPCs include a gearbox, so not a totally fair comparison. You could only get one Etek weapon motor at around $500. Some people wind their own motors, so that'll be all over the place.

I don't want to know what a smoked combat robot motor smells like, BAGs are bad enough.



06-09-2018 02:34 PM

snoman


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by ttnn58 View Post
i think you guys might be doing something wrong
+1 that seems like a lot. I think we have a total of 3 for two teams in the past 5 years



06-09-2018 05:36 PM

GeeTwo


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by marshall View Post
But how can you tell the difference between your practice and competition robots without them?
A difference which makes no difference is no difference. I'd love not to be able to tell the difference, and have to toss a coin to select which robot goes to competition! Seriously, in the four years we've built two "legal" robots, we changed our decision of which robot to bag on bag day twice (2015 and 2018).

If we had kept them, we could fit all of the robot motors we've smoked since 2012 in a shoe box - three CIMs, a few 550s, and a couple of servo motors. If you want to include the window motors, neverests, and servos whose plastic gearboxes we've stripped, we'd probably need a second shoe box. If only we'd been so gentle on our tools!



06-09-2018 05:41 PM

marshall


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by GeeTwo View Post
A difference which makes no difference is no difference.
Tide pods. Not even once, kids.



06-09-2018 07:21 PM

GeeTwo


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by marshall View Post
Tide pods. Not even once, kids.
Concur. Not sure what Marshall's intimating, but for the record, I have never purchased or otherwise controlled a Tide Pod, much less attempted to consume one. I have used Tide HE (non-scented, non-colored) since long before getting a high efficiency (HE) washer because I have had allergic reactions to Tide scents and/or colors. FWIW, my quote dates back to the 19th or very early 20th century, long before Tide, much less Tide Pods, existed.



06-11-2018 07:53 AM

ThaddeusMaximus


Unread Re: pic: Burnt Motors since 2012

FWIW another way to destroy CIMs (or at least Mini-CIMs, but all the same) is to run a flywheel directly off the output shaft with no extra support. This does something weird to the contactors, so that the motor only starts from certain angles, and when it does, it's pretty weak.


Remember kids: motors are not load-supporting bearings.



06-11-2018 09:56 AM

Ryan Dognaux


Unread Re: pic: Burnt Motors since 2012

Quote:
Originally Posted by RoboChair View Post
We once took apart a BAG motor that we completely smoked, wouldn't even spin. That is the only thing I have ever smelled that nearly made me throw up. It was a close call.

Friends don't let friends smell smoked BAGs.
Can confirm - we smoked a BAG this year on our swerve. I can't describe the smell other than it was terribly potent. The versaplanetary it ran into also smells awful now too.



06-11-2018 04:24 PM

BrendanB


Unread Re: pic: Burnt Motors since 2012

The CIM family of motors create the worst stench when you smoke them.

I remember on Windham in 2015 we smoked two miniCIMs when our programmers were tuning the elevator. They thought they disabled the robot and 10 minutes later the foulest smell filled the shop as the robot kept trying to hold position with a full stack of totes & can.

I've yet to smell something worse or one that lingers long after.



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