Colossal Avian: Difference between revisions
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==Chassis== | ==Chassis== | ||
===Overview=== | |||
Colossal Avian uses an iRobotics classic waterjet cut tab and slot 2024 Aluminum chassis. | Colossal Avian uses an iRobotics classic waterjet cut tab and slot 2024 Aluminum chassis. | ||
The exterior panels are all 1/2" thick, with 1/8" thick top and bottom plates and 3/8" thick for the interior upright panels. The first iteration of the chassis utilized 0.75" UHMWPE side armor with 3d printed TPU rear armor. After NHRL, the side armor was combined into the rear armor pieces into one large 3d printed TPU piece. | The exterior panels are all 1/2" thick, with 1/8" thick top and bottom plates and 3/8" thick for the interior upright panels. The first iteration of the chassis utilized 0.75" UHMWPE side armor with 3d printed TPU rear armor. After NHRL, the side armor was combined into the rear armor pieces into one large 3d printed TPU piece. | ||
==Drive== | ==Drive== | ||
===Overview=== | |||
Colossal Avian features a indirect drive drivetrain where the motor is belted to two wheels on each side, helping to isolate the motor from impacts. The wheels both ride on cantilevered shoulder bolts, which act as the drive axles. The cantilever design allows the drive axles to be completely isolated from the outer armor, meaning that the wheelguards can be completely ripped apart without impairing the drive functionality. The trade off is that the shafts themselves are less durable as they are not supported on two sides. | Colossal Avian features a indirect drive drivetrain where the motor is belted to two wheels on each side, helping to isolate the motor from impacts. The wheels both ride on cantilevered shoulder bolts, which act as the drive axles. The cantilever design allows the drive axles to be completely isolated from the outer armor, meaning that the wheelguards can be completely ripped apart without impairing the drive functionality. The trade off is that the shafts themselves are less durable as they are not supported on two sides. | ||
Components | ===Components=== | ||
* Motor: [https://www.amazon.com/dp/B09BJC6ZJS/ref=twister_B09BJCCW7R?_encoding=UTF8&psc=1 Flashhobby 3536 EVO 1450kv] | * Motor: [https://www.amazon.com/dp/B09BJC6ZJS/ref=twister_B09BJCCW7R?_encoding=UTF8&psc=1 Flashhobby 3536 EVO 1450kv] | ||
* Gearbox: [https://repeat-robotics.com/buy/repeat-drive-magnum-gearbox/ Repeat Drive Magnum] | * Gearbox: [https://repeat-robotics.com/buy/repeat-drive-magnum-gearbox/ Repeat Drive Magnum] | ||
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==Weapon Disk== | ==Weapon Disk== | ||
==Arm== | ==Arm== | ||
===Calculations=== | |||
===Components=== | |||
* Gearbox: [https://www.andymark.com/products/57-sport-options?Ratio=48%3A1%20HD%20(am-4006_048)&quantity=1 48:1 HD 57 Sport] | |||
* Arm Motor: [https://innov8tivedesigns.com/badass-3520-970kv-brushless-motor.html BadAss 3520 970 Kv] | |||
* Arm ESC: [https://www.castlecreations.com/en/mamba-x-1/mamba-x-esc-010-0155-00 Castle Mamba X] | |||
* #35H Chain | |||
==Learnings== | ==Learnings== | ||
Revision as of 17:39, 26 April 2024
Overview
Colossal Avian is Parts & Wreck's Senior Year 30lb Robot.
Chassis
Overview
Colossal Avian uses an iRobotics classic waterjet cut tab and slot 2024 Aluminum chassis. The exterior panels are all 1/2" thick, with 1/8" thick top and bottom plates and 3/8" thick for the interior upright panels. The first iteration of the chassis utilized 0.75" UHMWPE side armor with 3d printed TPU rear armor. After NHRL, the side armor was combined into the rear armor pieces into one large 3d printed TPU piece.
Drive
Overview
Colossal Avian features a indirect drive drivetrain where the motor is belted to two wheels on each side, helping to isolate the motor from impacts. The wheels both ride on cantilevered shoulder bolts, which act as the drive axles. The cantilever design allows the drive axles to be completely isolated from the outer armor, meaning that the wheelguards can be completely ripped apart without impairing the drive functionality. The trade off is that the shafts themselves are less durable as they are not supported on two sides.
Components
- Motor: Flashhobby 3536 EVO 1450kv
- Gearbox: Repeat Drive Magnum
- Wheels: TPU wheel hub with Vytaflex 40a tread
Weapon Disk
Arm
Calculations
Components
- Gearbox: 48:1 HD 57 Sport
- Arm Motor: BadAss 3520 970 Kv
- Arm ESC: Castle Mamba X
- #35H Chain
Learnings
Successes
Failures
- The developed cush drive did not provide enough impact absorption to the arm mechanism.
- Resulted in broken chain, and damaged gearboxes
- A proper slipping clutch or a better designed impact absorption mechanism is required to withstand the dynamic forces from sudden decceleration upon impact