Sandi

Sandi
Year Of Creation	2015-2016
Versions
Current Version	1.0
Update Year	2015-2016
Wins/Losses	0/2
Information and Statistics
Weight Class	BeetleWeight
Weapon Class	Ring Spinner
Combined Wins/Losses	0/2
("Temporary")	("Temporary")
("Temporary")	("Temporary")

Competitions

• Motorama 2016

  • Results:
    • Bracket Style:
      • Loss vs. Silent Spring
        • Sandi's wheels were not stock, and the different left and right wheels caused the robot to drive in arcs.
        • Silent Spring's weapon disk slipped between the baseplate and ring assembly, shearing the screw of a ring support.
        • Sandi's ring was spinning at such high speed that it still hit Silent Spring's weapon, shattering it, throwing the robot across the arena, and affecting its steering.
        • Sandi's ring was unable to spin up again due to the lack of support; eventually, the hubs slipped the drive axles on both sides of the robot, disabling it and resulting in a loss by KO.
      • Loss vs. Ghoti
        • Sandi (for a yet unknown reason) could not drive as well right side up as it could upside down, so its mobility was hampered.
        • Ghoti went in for a hit, as Sandi would not easily move towards the other robot.
        • The impact knocked both Sandi's wheels off axle due to the concussive force, disabling its movement. Ghoti was tossed and landed upside down, its bar bent by the impact.
        • Due to its initiation of contact, Ghoti won by KO.

  Version

  V1

  Created By: Lee Whitley, Jeet Patel, Randy Deng, Jeffrey Zhao

  Drive Motors	Pololu 9.7:1 Metal Gearmotor 25Dx48L mm HP
  Drive Motor Controllers	Sabertooth 2X5 Motor Controller 2X5A
  Weapon Motor	Turnigy Multistar 3508-640Kv 14Pole Multi-Rotor Outrunner
  Weapon Motor Controllers	HobbyKing 30A UBEC
  Reciever	Hobby King 2.4Ghz Receiver 6Ch V2
  Remote Control	Hobby King 2.4Ghz 6Ch Tx and Rx V2
  Battery	Zippy Flightmax 1300mAh 3S1P 20C
  (OTHER:)

  Problems:

  • Hubs and wheels slipped off of motor axles with enough force applied to the robot.
  • Non-stock wheels made the robot almost undriveable.
  • Ring would spin down and not spin up again easily after hitting any object (tested at full speed with plastic water bottle).
  • Ring slipped off of supports at certain locations along its track.
  • Large open space between ring assembly and robot baseplate is an opening to attack.

  Good Aspects:

  • Weapon was one of (if not the most) powerful in the 3lb class.
  • Can operate when flipped, although was far more effective on one side than the other for some reason.
  • Robust support network can allow several supports to be taken out and the robot still be viable after repairs.

   Changes/Improvements:

  • Use common screw sizes so multiple esoteric hex keys are unnecessary.
  • USE STOCK WHEELS.
  • POSSIBLY plastic baseplates and motor mounts to save weight.
  • More precisely machined ring assembly and teeth in order to prevent slippage and imbalance.
  • Smaller components in order to save room for the internals.
  • Less space between ring assembly and baseplates.
  • Better skids.
  • Mounting location for power switch.

  See also

  • Ghoti
  • Shelli
  • Misti
  • Emmii
  • Ami
  • Flipboi

  Notes:

  Sandi still runs. It just doesn't run well.

  "Official unofficial" name is Hurricane Sandi.