Mandi
| Mandi | |
|---|---|
 | |
| Year Of Creation | 2010-2011 |
| Versions | |
| Current Version | 2.0 |
| Update Year | 2012-2013 |
| Information and Statistics | |
| Weight Class | MiddleWeight |
| Weapon Class | Drum Spinner |
| Wins/Losses | 3/4 |
| ("Temporary") | {"Temporary") |
| ("Temporary") | ("Temporary") |
Contents
Competitions
RoboGames 2017
RoboGames 2015
RoboGames 2013
- Results
- Victory vs Witch Doctor
- Mandii was initially knocked around and flipped over by the opponent
- Opponent hits Mandii's weapon, flipped itself over as a result, and tried to tackle Mandii
- This collision disabled the opponent's weapon/only means of movement
- Opponent spewed smoke
- Victory vs MPV
- Opponent had no visible weapon/movement mechanism
- Opponent was obliterated on 2nd contact by Mandii
- Mandii sustained no visible damage
- Loss vs The Blender
- Mandii attacked frequently, but was pushed aside by the opponent's shell
- Mandii is then viciously attacked by the enemy
- Eventually, Mandii is disabled due to the damage sustained
- Victory vs Witch Doctor
RoboGames 2012
- Results
- Loss vs Wolverine
- Constant to-and-fro hits
- Mandi was visibly damaged, while the opponent was not
- Loss due to judge's decision
- Loss vs Wolverine
Versions
Mandi (V1.0)
Undocumented
Mandii (V2.0)
Created by: ______
| Drive Motors | AmpFlow A28-150 |
| Drive Motor Controllers | Victor 885 |
| Weapon Motor | AmpFlow A28-400 |
| Weapon Motor Controllers | |
| Receiver | |
| Remote Control | Hobby King 2.4Ghz 6Ch Tx and Rx V2 |
| Battery | |
| (OTHER:) | (OTHER:) |
Problems
- Side Aluminum Armor Caved onto wheel from large hit. Prevented Drive
- Live Weapon Shaft
- Deflected from hits
- Needle bearings supporting drum axle shattered
- Drum completely cracked through
- Plastic Skids Ripped off in fight
- Drum Teeth sheared off
Good aspects
Changes/Improvements
Mandiii (V3.0)
Created by: Chelsea Silberglied, Trenton Charlson, Dustin Sloan
| Drive Motors | AmpFlow A28-150 |
| Drive Motor Controllers | Vyper |
| Weapon Motor | Castle Creations 2028 Extreme |
| Weapon Motor Controllers | Turnigy Monster 2000 |
| Receiver | Hobbyking V2 |
| Remote Control | Hobby King 2.4Ghz 6Ch Tx and Rx V2 |
| Battery | Zippy Compact 5000mAh 6S
2 in series for weapon 1 for drive |
| Armor | 2"x4" HDPE Bar Stock 3/16" 6061 AL Plate |
Problems
- Low Clearance 0.5". Armor same height off ground as arena lip, got stuck on edge.
- Small Wheels (5"), Need to be large
- Difficult to service, required complete disassembly to replace belts and drum bearings.
- Weapon Pulley too large, belts vulnerable to hits. Also made of aluminum and easily damaged.
- Transmitter broke during competition. Used Hobbyking $20 Transmitter.
- 3D Printed Electronics Mount Broke
- Need Fastblow Fuse <300A
- Front Plate Fracture at screw interface with side plates, due to <0.125" material at bolt hole
- Weapon Bearings not checked after each match
- One shattered during first match, still spun but quickly seized
- Drum bolt circle was not machined properly, drums canted.
- Large flat area on rear armor, got caught on arena edge
- Underweight (113 lbs)
Good aspects
- Reliable Drum
- Spun up fast, <4 seconds
- Drum in 2 pieces, 10 0.3125" Alloy Steel dowel pins
- 4 Large Tapered Roller Bearings, 2 outside and 2 in the middle
- Wire EDM Single Tooth (Montgomery Machining Mall), easy to hold tolerance
- Hardness 53.5 HB, Heat Treated at Braddock Metallurgical Inc. for free. Did not fracture
- Drum had dowel pin circle on both sides, could be reversed when pins broke inside and were stuck
- Powerful Drivetrain: 150lb-in Gearbox Output Torque, Could push > 130lb person on tile floor.
- All wheel drive, 4 Wheels
- Stable Drive Control, robot went straight and could turn appropriately
- Good Speed: 13.6 mph, 912RPM 5" Wheel
- Zip Tied and Electrical Taped all electronic connectors
- Armor absorbed hits well
- Almost no significant damage to main frame
- Aluminum dented and sheared
- HPDE plastically deformed
- Multiple replaceable sets (2.5 Sets)
- Sheet Metal Screws, self tapping into plastic
- Tolerances
- Parts fit together well. Waterjetted jigsaw fits had 0.008" under sizing to interface smoothly
- Dial Indicated large parts on mill
- Custom Grooving Tool for pulley V-belt groove
- Used Jigs to drill holes on side plates lengthwise (Holes could not be done on mill because the part is too long)
- External chain on drive easily serviceable
- Electronics properly spec'd. Did not burn an ESC
Changes/Improvements
- Larger wheels for ground clearance, 6" instead of 5"
- Pockets and Slots in front plate, back plate, and side spacer to accommodate wheels
- Make hub go all the way through wheel (not 2 separate inserts)
- Properly machined drum so that dowel circles line up
- Larger Drum to utilize extra weight
- Hole instead of H slot for belt servicing so that entire bot does not need disassembly to replace belts
- Smaller weapon pulley required to accommodate hole
- Steel Pulley, not Aluminum
- No vertical holes in front plate
- Larger skids for larger wheels/drum
- Extra 2 Skids further back on side plates, redundancy in case front skids shear
- Hole in sideplate so that weapon shaft and drum can be removed without removing entire side plate
- Insert attached to side plate to hold in place
- Pocket armor to compensate for space
- Smaller Rear Armor
- Make same profile as side armor
- More Powerful Weapon Motor (Scorpion HK 4530 450)
- More Torque, faster spinup and smaller weapon pulley needed due to less gearing
- Brighter LEDs on top plate
See also
Notes:
Successor to Soafi
Built by _____
