Over weight robot
 

We now have 130lbs on our robot and have just kept the stric basic(2 arms, shooter). We don't know where to cut that extra 10 lbs.

Re: Over weight robot
 

What material is your robot made out of?

Also are you weighing your robot with bumbers and/or battery in? If you are take them off and you will be fine.

Re: Over weight robot
 

We took out the bumper and battery but we still at 130lbs plz help me :(:confused:.Here's some photo

Re: Over weight robot
 

well you can start drilling hole,and what mr EricLeifermann said what type of metal or material are you using, and if you have your bumpers and battery on, just remove them and you will be good

Re: Over weight robot
 

Bumper and battery are already out in the 130lbs. We are only using thin metal

Re: Over weight robot
 

well i could say if you just want to shoot, remove the arms ( if the arms are used for climbing), or if you want to climb and play defense, than remove your shooter. it which ever way you guys want to go

Re: Over weight robot
 

My first thought is to put some lightning holes in your hopper and shooter chutes, you don't need a solid piece of metal there. Its not going to get you 10 pounds but its a start.

Also look at how many bolts and the size of bolts you are using. Do you really need what looks like 3 1/4-20 bolts to hold up 1 PVC air tank?

Re: Over weight robot
 

Since you are currently 10lbs over drilling holes is going to be difficult thats a lot of holes. I dont know if there is even room to drill that many holes from your pictures.
I would look over what materials your using, are you using a 1/2'' plate where something much smaller could be use?
Like posted above make sure your battery and bumpers weren't included in that weight.

Re: Over weight robot
 

Last year, we lost about 4 lbs drilling out all the holes we weren't using on the kit frame. That's a start. It looks like your shooter is plywood lined with (1/8"?) aluminium plate. Drill holes into anything that doesn't contact the frisbee. You can easily shed 10 lbs with just drilling holes, don't do anything drastic.

Re: Over weight robot
 

You could replace a lot of you nuts and bolts with lightweight rivets. I can't see much of your pneumatic system, but if you have a lot of brass you should replace it with more plastic fittings and tubes. If your shooter has an adjustable height, you may want to consider fixing it to one position and adjusting the flywheel speed to control disk trajectory.

In the future, your tower probably doesn't need to be as strong as you made it this year. Judging by the pictures you posted, Your tower seems to be made of the same type of stock as your drivetrain, which is overkill.

Re: Over weight robot
 

Our arms are pretty heavy 7lbs each. In this short time we cant get smaller piston.

Re: Over weight robot
 

As said before, start by taking metal out of your feeder chute. You only need rails along the outside edges to hold the frisbees, keeping a pair of rails 2" wide while taking out sections in the middle will help. Same goes for the piece of plywood on your shooter. There is a lot of material and weight you don't need, especially in that plywood seeing as how it is covered in a sheet of metal for the frisbee to slide against.

Look at hogging out holes in the inner frame rails. You need strength on the other rail (that forms the perimeter of the chassis) to take hits from other robots, but the inner rails that support the inside of the wheels don't take near as much force. You could place many large holes in the vertical span of those channels and sacrifice little strength.

It's hard to tell from the photo, but how thick is your electronics platform?

Hardware is another place. I see a couple frame joints that have 3 bolts per leg. Take out the third bolt on each leg and if it is still stiff enough, cut off the excess length from the joint (where the third bolt would have resided).

Re: Over weight robot
 

You could also try replacing the CIMs in your shooter with something smaller like a Bag of MiniCim. It won't get you the 10 lbs, but it will help.

Re: Over weight robot
 

Have you checked this out?

Re: Over weight robot
 

Thank you, we have figured out the stuff to do for reducing the weight. We are taking out the manifold and the compressor plus some holes and cut out some piece. Queston: will we have enough air