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Thread: Robot Parts and Materials - Answer Thread

  1. #31
    Game Design Committee Member Sheldon's Avatar
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    Bearing Block

    Quote Originally Posted by FTC5290 View Post
    Under the COTS area it stated bearings. Is the bearing itself only allowed or can it be in a pillow block or some other bearing holder in example

    Bearing blocks from Servo City 545444
    A: Per Rule <R05.l> bearings are allowed but non-Tetrix bearing mounts are considered a COTS and are not allowed.

  2. #32
    Game Design Committee Member Sheldon's Avatar
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    Allowable Servo Blocks

    [QUOTE]
    Quote Originally Posted by FTC7487 View Post
    <R05>d. states "(e.g. Servo city part # SB608SH and SB609SH)..." We read that as "for example" and this is a suggestion and not dictating these as the only allowable servo blocks, as stated by GDC NKOTB on the Robot parts and Materials-answer thread on 9-17-2013, 2:47 PM. QUOTE]
    A: The intent of the rules is to allow only the Servo blocks that are listed in Rule <R05.d>
    Last edited by Barry; 10-08-2013 at 06:56 PM.

  3. #33
    Game Design Committee Member Sheldon's Avatar
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    Anti-Static Coatings

    Quote Originally Posted by FTC6389 View Post
    Hello,

    Our team had major issues with static build-up in our robot last year, causing the robot to lose wifi connection periodically. This year we are determined to mitigate this issue. One proposal is to use an anti-static coating like these...

    http://protective.sherwin-williams.c...3Aproduct-7068

    http://gokimco.com/techspray-1756-8s...ting-8-oz.html



    Our question is, are these legal to use on our robot?

    thanks.

    - FTC Team 6389
    A: The coatings cited in this question are essentially conductive paints that result in a durable coating. Since painting a robot is allowed, these coatings are legal. However, there are some anti-static coatings that produce a coating that can rub off on the field during a match. These coatings are not allowed as they will result in field damage.
    Last edited by Administrator; 01-07-2014 at 01:00 PM. Reason: added image and emphasis

  4. #34
    Game Design Committee Member Sheldon's Avatar
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    Sandpaper

    Quote Originally Posted by FTC5973 View Post
    Hello, we would like to know if sandpaper is allowed on robots. Thanks in advance!
    A: Sandpaper is legal unless it's use causes field damage. This includes any damage to the blocks.
    Last edited by Administrator; 12-27-2013 at 02:18 PM.

  5. #35
    Game Design Committee Member Sheldon's Avatar
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    Rubber Links

    Quote Originally Posted by FTC4855 View Post
    The team is wondering if the following part would be considered fasteners under Rule <R05.k>

    Rubber Link (4-pack) - http://www.vexrobotics.com/vex/produ.../275-1029.html


    A: Yes, these links are considered fasteners and are legal.
    Last edited by Administrator; 01-07-2014 at 01:00 PM. Reason: added image

  6. #36
    Game Design Committee Member Sheldon's Avatar
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    Projectile Mechanisms

    Quote Originally Posted by FTC0033 View Post
    <RG10>d. "...Teams must be very careful when incorporating spring-like mechanisms or other items to store energy on their Robot by means of part or material deformation. A Robot may be rejected at inspection if, in the judgment of the inspector, such items are unsafe."
    and <RG11> "Game elements launched by Robots should not have a velocity greater than that required to reach a maximum of four (4) feet (1.2 meters) above the playing field surface, nor travel a horizontal distance greater than ten (10) feet (3 meters) from the point that the game element ends contact with the robot."

    How would a launching mechanism, likely made with elastic or springs, with the purpose of launching an individual robot mechanism be judged? The mechanism would stay attached to the robot at all times, by a cord.

    Would it make a difference if the launch mechanism were not to be drawn taught until ready to be used in the game? And of course that it be clearly identified by warning labels on the robot.
    A: Launching parts of the robot is not allowed due to concerns over the safety of such devices. Therefore the mechanism you describe would not be legal.

  7. #37
    Game Design Committee Member Sheldon's Avatar
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    Wheels

    Quote Originally Posted by FTC4855 View Post
    Per Post #3 on Robots Parts and Materials - Answer Thread Andy Mark HiGrip wheels are considered legal per Rule <R05.o>.
    Would the following wheels be considered legal under the above definition

    1. AndyMark 4" Plaction Wheel w/ Roughtop Tread (Part #:am-0435) http://www.andymark.com/product-p/am-0435.htm






    1. Vex 4" Traction Wheel (Part#: 217-2588) /w Roughtop Tread (Part#: 217-2887) http://www.vexrobotics.com/vexpro/wh...on-wheels.html


    A: These wheels would be legal per Rule <R05.o> as long as the outside diameter, including the tread, is less than or equal to 4". Teams should check with the supplier to confirm the outside diameter.
    Last edited by Administrator; 01-07-2014 at 01:02 PM. Reason: added images

  8. #38
    Game Design Committee Member Sheldon's Avatar
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    Mounted Bearings

    Quote Originally Posted by FTC4855 View Post
    Per Rule <R05.i> would the following bearings be considered legal?

    Steel Flange Mounted Bearing - http://www.mcmaster.com/#7208k52/=ou68sb


    Miniature Aluminum Base-Mount Stainless Steel Ball Bearing--ABEC-3 - http://www.mcmaster.com/#8600n12/=ou69xc



    A: Because the housing is integral to the bearing (i.e. you can't remove the bearing and still have it function as a bearing) this is considered a bearing, not a COTS housing and a bearing. Therefore both of these bearings are legal.
    Last edited by Administrator; 01-07-2014 at 01:03 PM. Reason: added images

  9. #39
    Game Design Committee Member Sheldon's Avatar
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    Hex Bars

    Quote Originally Posted by FTC4140 View Post
    Can we use Hex Bars as a raw material?

    Some examples:
    Aluminum
    http://wcproducts.net/wcp-7075-hex
    Steel
    http://www.mcmaster.com/#steel-hex-bars/=oua6dc
    Stainless Steel
    http://www.mcmaster.com/#stainless-s...x-bars/=ou9zy3



    Thanks.
    A: Yes, hex bars are a legal raw material.
    Last edited by Administrator; 01-07-2014 at 01:03 PM. Reason: added image

  10. #40
    Game Design Committee Member Sheldon's Avatar
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    Outside Machining

    Quote Originally Posted by FTC5950 View Post
    A professional machinist has offered to make parts for us that we design in Creo. We are not sure whether or not we could legally take him up on his offer. Can we?
    A: Yes, this is legal.

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