Thingiverse
Toypedo by Patrick_B
by Thingiverse
Last crawled date: 3 years ago
Update 02-Aug-2015:
• Uploaded the smaller 3-blade propeller model seen in the video.
• Tweaked the coinweight models. The coinweight_threads part would sometimes split apart when inserting the coinweight_clamshell part. I beefed up the part that was breaking and left more room for the clamshell to be inserted.
This toy is a rubber band powered, propeller driven, underwater torpedo. Assemble the components, wind up the propeller, and see how far it goes underwater. Designed in re arrangeable sections that change the Toypedo's dynamics, the Toypedo is made for thought-provoking pool-time fun for kids. How far can you make it go?
Things kids can learn:
• How moving weight and buoyancy affects the travel arc. More buoyancy in the front will make it curve upward - and more weight in the back will do the same!
• Newton's third law - When the rubber band twists the propeller-end one direction, it also twists the other end the opposite direction. Easily illustrated by removing the fins; the back section will spin much faster. This is why fins are important!
• Inertia - Stack some coin-weight sections on the Toypedo and see how it affects the acceleration.
Reconfiguring ideas
• Swap out the fins for another backwards propeller (using the double-male to connect)
• Get a longer or shorted rubber band, add or remove hollow shaft sections as needed, and see what effect it has.
• Minimize weight, maximize buoyancy and aim the Toypedo upwards. Will it come rocketing out of the water like a killer whale, or will it not have enough velocity for a dramatic exit?
• Aiming the Toypedo upwards, see how much weight it takes to keep it from moving upwards when the propeller spins.
• Add buoyancy to the back, and see how much it curves down.
• Add weight to the back, and see how much it curves up.
Redesign Ideas
• Design your own optimized propeller
• Redesign the Body assembly to reduce drag.
• Design a shaft section with a big flat disk to demonstrate drag.
• Design a spring-driven system and get rid of the rubber band.
Small propeller test: https://www.youtube.com/watch?v=FBwe6xVVXEU
Large propeller test: https://www.youtube.com/watch?v=ITS9-C_qkNI
Other Thoughts
• My favorite thing about this toy is how modular it is. Anyone from the community can come up with ideas to improve the design, and because it's designed in sections, they can print and test their ideas without needing to reprint or redesign the whole thing. I'm eager to see what folks come up with!
• Note that there is a .zip file labeled "Gearassm". This file contains parts for a coil-spring powered version that uses bevel gears to reduce the gearing. Even with the current gearing, though, I found that the springs still acts too fast. When released, the propeller would go "Blrrrrp" for a fraction of a second before the springs finished their action. I do believe that this idea can still work, it just needs a lot more gear reduction to let the propeller spin longer. Due to time constraints, I've focused my efforts on the rubber band powered version.
• Uploaded the smaller 3-blade propeller model seen in the video.
• Tweaked the coinweight models. The coinweight_threads part would sometimes split apart when inserting the coinweight_clamshell part. I beefed up the part that was breaking and left more room for the clamshell to be inserted.
This toy is a rubber band powered, propeller driven, underwater torpedo. Assemble the components, wind up the propeller, and see how far it goes underwater. Designed in re arrangeable sections that change the Toypedo's dynamics, the Toypedo is made for thought-provoking pool-time fun for kids. How far can you make it go?
Things kids can learn:
• How moving weight and buoyancy affects the travel arc. More buoyancy in the front will make it curve upward - and more weight in the back will do the same!
• Newton's third law - When the rubber band twists the propeller-end one direction, it also twists the other end the opposite direction. Easily illustrated by removing the fins; the back section will spin much faster. This is why fins are important!
• Inertia - Stack some coin-weight sections on the Toypedo and see how it affects the acceleration.
Reconfiguring ideas
• Swap out the fins for another backwards propeller (using the double-male to connect)
• Get a longer or shorted rubber band, add or remove hollow shaft sections as needed, and see what effect it has.
• Minimize weight, maximize buoyancy and aim the Toypedo upwards. Will it come rocketing out of the water like a killer whale, or will it not have enough velocity for a dramatic exit?
• Aiming the Toypedo upwards, see how much weight it takes to keep it from moving upwards when the propeller spins.
• Add buoyancy to the back, and see how much it curves down.
• Add weight to the back, and see how much it curves up.
Redesign Ideas
• Design your own optimized propeller
• Redesign the Body assembly to reduce drag.
• Design a shaft section with a big flat disk to demonstrate drag.
• Design a spring-driven system and get rid of the rubber band.
Small propeller test: https://www.youtube.com/watch?v=FBwe6xVVXEU
Large propeller test: https://www.youtube.com/watch?v=ITS9-C_qkNI
Other Thoughts
• My favorite thing about this toy is how modular it is. Anyone from the community can come up with ideas to improve the design, and because it's designed in sections, they can print and test their ideas without needing to reprint or redesign the whole thing. I'm eager to see what folks come up with!
• Note that there is a .zip file labeled "Gearassm". This file contains parts for a coil-spring powered version that uses bevel gears to reduce the gearing. Even with the current gearing, though, I found that the springs still acts too fast. When released, the propeller would go "Blrrrrp" for a fraction of a second before the springs finished their action. I do believe that this idea can still work, it just needs a lot more gear reduction to let the propeller spin longer. Due to time constraints, I've focused my efforts on the rubber band powered version.
Similar models
3dwarehouse
free
Rubber Band Car
...release the car the rubber band will propel the car forward. #band #car #hook #model #physics #propel #rubber #rubber_band #wheel
grabcad
free
gear for the rubberbands
...the claw's dome to a gear. when the gear spins, the lip of the gear will catch the lip of the gear, causing the claw to shut/
thingiverse
free
Door "stay put"
... removing rubber bands. i coulda used real springs, but decided rubber bands were plentiful enough, and made for easy adjustment.
thingiverse
free
Spring Grip by wilee98
... wilee98
thingiverse
this is a remix of a miniature holder where i redesigned the holder to use springs instead of rubber bands.
thingiverse
free
Rubber band powered race boat by cfishy
...it with epoxy.
printing requires a bit of support as shown in after print picture here. no issues if you print it length wise.
grabcad
free
The Challenger II
...erlying idea is that the first hand picks a side. and, after the lifting, the other side is increasingly influencing the gripper.
thingiverse
free
Milk level indicator by Oana
...nce. add two rubber bands. :)
also works with bottles and pesky pringles cans. anything you can get rubber bands around really.
thingiverse
free
Updated fins for rubber band torpedo. by Willeet
...willeet
thingiverse
propeller guard, and longer fins for more distance. i haven't tried it yet so i do not know if it works.
3dwarehouse
free
Fin drive
...iomimetic fin propulsion with less effort than a propeller drive. #biomimetic #fin_drive #flipper_power #human_powered #submarine
thingiverse
free
PLA Spring Toy REDO by ThreeHamsWillKillHim
... like cleaning)
enjoy.
https://youtu.be/e4j5zx3sbnw
if you print it and love it, please do upload a make and consider tipping! :)
Patrick
3ddd
$1
Patrick
...patrick
3ddd
патрик , статуэтка
игрушка-статуэтка patrick из мультсериала спанч боб.
turbosquid
$60
patrick
...turbosquid
royalty free 3d model patrick for download as ztl on turbosquid: 3d models for games, architecture, videos. (1682952)
turbosquid
$20
Patrick
...id
royalty free 3d model patrick for download as ztl and obj on turbosquid: 3d models for games, architecture, videos. (1637550)
3d_export
$5
patrick star
...patrick star
3dexport
patrick star mit textur
3ddd
$1
кровать Patrick
...кровать patrick
3ddd
cattelan , patrick
сделана по каталогу
turbosquid
$35
Patrick
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$1
Patrick
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
free
Patrick
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
3d_export
$5
patrick essamambo
...patrick essamambo
3dexport
hello everyone. the character patrick will look good in your cartoons
turbosquid
$20
patrick star
...squid
royalty free 3d model patrick star for download as obj on turbosquid: 3d models for games, architecture, videos. (1472931)
B
3ddd
$1
B&B
...b&b
3ddd
b&b italia
statue b&b italy
3ddd
$1
B&B Italia
...b&b italia
3ddd
b&b italia
b&b; italia
3ddd
$1
b&b italia
...b&b italia
3ddd
b&b italia
b&b; italia
3ddd
$1
B&B LAZY
...b&b lazy
3ddd
b&b italia
b&b; lazy
3ddd
$1
B&B Italy
...b&b italy
3ddd
b&b italia
диван b&b; italy
3ddd
$1
b&b RAY
...b&b ray
3ddd
b&b italia , угловой
диван b&b; ray
3ddd
$1
B&B Beverly
... b&b italia , beverly
cтул beverly от b&b.; текстуры в архиве
3ddd
$1
B&B ITALIA
...lia , журнальный , круглый
стол b&b; italia
3ddd
$1
шезлонг B&B
...шезлонг b&b
3ddd
b&b italia , шезлонг
шезлонг b&b; terminal 1
3ddd
$1
B&B J.J
...b&b j.j
3ddd
b&b italia , журнальный
b&b;
j.j
45x40x49 cm