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-   -   How Much Does Your Robot Weigh? (http://www.chiefdelphi.com/forums/showthread.php?t=144676)

BrendanM 24-02-2016 16:01

How Much Does Your Robot Weigh?
 
Curious as to how much this year's robots weigh considering that many of them are so small.

MechEng83 24-02-2016 16:02

Re: How Much Does Your Robot Weigh?
 
99.5 lbs as of last night.

MaGiC_PiKaChU 24-02-2016 16:02

Re: How Much Does Your Robot Weigh?
 
112.3lbs

you should create a poll :)

BrendanM 24-02-2016 16:05

Re: How Much Does Your Robot Weigh?
 
Quote:

Originally Posted by MaGiC_PiKaChU (Post 1546170)
112.3lbs

you should create a poll :)

I did, you guys replied too fast!

BrendanM 24-02-2016 16:06

Re: How Much Does Your Robot Weigh?
 
Quote:

Originally Posted by MechEng83 (Post 1546168)
99.5 lbs as of last night.

Please fill out the poll, just put it up.

JesseK 24-02-2016 17:39

Re: How Much Does Your Robot Weigh?
 
Ounces overweight. Going to replace some steel bolts with aluminum in the wheels we got from Amazon, so that'll solve it. Easy.

sagi34 24-02-2016 18:43

Re: How Much Does Your Robot Weigh?
 
Is it just me or 254 troll every poll? they said they were going to do less than 10 points in another poll, in this poll 3 team members voted for over weight.
waiting for release video.

BrendanM 24-02-2016 22:49

Re: How Much Does Your Robot Weigh?
 
Quote:

Originally Posted by JesseK (Post 1546239)
Ounces overweight. Going to replace some steel bolts with aluminum in the wheels we got from Amazon, so that'll solve it. Easy.

I'm no expert but if you have to take off only a few ounces I would recommend a hole saw and a drill. Since you've already bought the bolts you should defiantly use them but you should put them in the places that have the least stress, wheels are not the best spot.

PayneTrain 24-02-2016 22:51

Re: How Much Does Your Robot Weigh?
 
Quote:

Originally Posted by JesseK (Post 1546239)
Ounces overweight. Going to replace some steel bolts with aluminum in the wheels we got from Amazon, so that'll solve it. Easy.

Why not just shake it a little bit? If something comes loose and falls off, it probably wasn't that important.

Probably.

Harman341 24-02-2016 22:58

Re: How Much Does Your Robot Weigh?
 
Quote:

Originally Posted by PayneTrain (Post 1546445)
Why not just shake it a little bit? If something comes loose and falls off, it probably wasn't that important.

Probably.

Just drive over the rock wall a couple times and you'll be fine ::ouch::

There's always 4-5 lbs of dead weight on a robot. The hard part is finding it.

Michael Hill 25-02-2016 00:21

Re: How Much Does Your Robot Weigh?
 
Before the season started, I budgeted out 98 pounds for our robot (with 22 pounds margin). We weighed in around 87 pounds just before bag...That's without our climber though. It turns out, our shooter was <6 lb even with a flywheel (13 lb budgeted). Drivebase ended up being around 40 pounds with 30 pounds budgeted (didn't expect 8" pneumatic wheels before the season).

GeeTwo 25-02-2016 06:38

Re: How Much Does Your Robot Weigh?
 
A bit shy of 100 pounds estimated (We weighed the main chassis but we are still waiting on pneumatic cylinders from Bimba, so our launcher and pickup will be in the withholding bag). We also have about 7# of steel ballast we can bolt on in about two minutes (holes pre-drilled in both ballast and robot). We sweated frame perimeter (119") and fitting under the low bar more than weight this year.

bEdhEd 25-02-2016 06:45

Re: How Much Does Your Robot Weigh?
 
117.25 lbs. We had the design for a scaler, but not the weight for one. :(

JesseK 25-02-2016 09:23

Re: How Much Does Your Robot Weigh?
 
Quote:

Originally Posted by PayneTrain (Post 1546445)
Why not just shake it a little bit? If something comes loose and falls off, it probably wasn't that important.

Probably.

Funny you say that - there IS a 0.5" long #10 bolt rattling around in one of the drive train rails. We've tried magnets and a few other things to get it out via the 3/8" or 1/2" access holes we have at various spots along the bottom of the rail. At this point I bet it will find its way out sometime during the season.

Quote:

Originally Posted by BrendanM (Post 1546442)
I'm no expert but if you have to take off only a few ounces I would recommend a hole saw and a drill. Since you've already bought the bolts you should defiantly use them but you should put them in the places that have the least stress, wheels are not the best spot.

The aluminum bolts won't see the stress of the robot weight/etc - they hold the two sheet metal halves of the tire rim together. Lightening holes in general are taboo on our team - it's either trussed ahead of time, or we find other ways to lose weight. We powder coat 100% (for better or worse), so the finished look matters. We run our team like a small tech company, so I get it.

BrendanM 26-02-2016 22:28

Re: How Much Does Your Robot Weigh?
 
Thanks to everyone who answered!


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