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  #46   Spotlight this post!  
Unread 21-02-2006, 22:51
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Re: Got Weight?

we shaved about 40 lbs in 3 days.....
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Unread 23-02-2006, 10:16
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Re: Got Weight?

On the aluminum frame with the 1/4" holes in it, I used a Uni-Bit (one of those stepped-bits with wider rings for each size hole) to drill out EVERY hole to 5/16". We may need to go to 3/8", but for now this has worked.

Also, we drilled out nearly every peice of Lexan on the robot in cool designs and patterns.
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Unread 23-02-2006, 10:18
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Re: Got Weight?

Quote:
Originally Posted by ryan_f
Switch the air in your tires with helium.

For real?
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Unread 23-02-2006, 13:18
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Re: Got Weight?

We took off about 20lb in 6 hours on sunday... it was quite the feat, but we learned some interesting things...

Like did you know that it takes 6 2"dia holes in 1/8" lexan to take out 0.1lb?

And that 3 1 1/2" bolts with their washer & nut weigh 0.1lb?

But it takes 50+ 1/2" holes in 1/16" alumnum to take out 0.1lb! Thats a very overworked drillpress!

We took out as much unnecessary support, bolts, lexan, steel plate, etc as we could. Ashley kept track of how much we had lost each half hour, and it was cool to see the giant bucket of parts & hacked off pieces in the end.

Now our poor little robot is all skin and bones!
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Unread 23-02-2006, 13:26
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Re: Got Weight?

It's a little to late for this tip I use, but I design my least favorite (aka risky, cute but not worth much, or complicated) components to be massive. That way I have one more excuse to get rid of them.
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Unread 23-02-2006, 16:18
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Re: Got Weight?

there is one of these puppies, with even more sizes, at the shop we were working in. If you have to punch a bazillion 2" holes, this is the only way to fly!
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Unread 23-02-2006, 16:26
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Re: Got Weight?

Quote:
Originally Posted by PVCMike
You'd be surprised with the speed holes. Last year we removed almost 20 pounds from ours, granted we had an 18' telescoping boom made of 1/8 aluminum box tubing, but still, it adds up, every little bit counts. And the thinner lexan is a good point, thinner everything will work really, we cut alot of weight a few years ago by going down 1 size in all the PVC tubing we used.

Also, smaller/less motors if you can, they weigh a bit.
Oh yeah, that lift was huge!
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Unread 23-02-2006, 18:29
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Re: Got Weight?

if you bring your robot to a place with less gravity hmmm... lets say the moon for example you will be all set and plenty under weight.
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Unread 23-02-2006, 18:42
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Re: Got Weight?

It was mentioned twice before but my personal favorite tool in the Dremel. That means any screw that is too long gets the axe. Believe it or not, it does help. More so with the longer screws. Then again, our robot is all nuts and bolts so obviously, it would make a difference to us.
(Of course, we also swissed our robot. now we are comfortably under weight =D)
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Unread 23-02-2006, 18:43
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Re: Got Weight?

Zip ties are your friends. I can't tell you exactly how much lighter they are, but they sure are much lighter than steel.

We were so concerned about weight, we even used smaller zip ties in areas of little stress. I love zip ties.
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Unread 23-02-2006, 19:19
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Re: Got Weight?

Quote:
Originally Posted by BrittanyV
Zip ties are your friends. I can't tell you exactly how much lighter they are, but they sure are much lighter than steel.

We were so concerned about weight, we even used smaller zip ties in areas of little stress. I love zip ties.
Last year all of our speed controllers and electronics were held on soley by zipties. They never gave us any trouble.
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Unread 27-02-2006, 22:06
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Re: Got Weight?

An antigravity generator...oh and a drill
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