hey! i used this very same design and it worked pretty well; however my design had a issue: the 3-way Tee PVC would not sit on the flange properly since there was a little gap in between the 2 of them. this would cause the design to wobble even after using a ton of glue. i see that your design never wobbled and was wondering how you prevented that. thanks!
how do you decide where to drill in the air vents? also was sanding the onlying you did to minimize the resistance or do u use baby powder or line the inside with something aswell.
The launch holes, are the length of the launch height of the PVC pipe divided by 5 for the number of holes, and the other holes were added as needed to ensure enough air release before launch.
For the air compression system, when the mass is dropped, does it just hit the bottom and that produces the air pressure to the smaller tube releasing the ball or how does that work?
The mass, when released, first needs to build up speed. The holes along the tube (non launch ones) allow it to build up speed without launching the ball. At the bottom, it hits a sealed area at high velocity, leading to a final compression burst and launch.
I used a short PVC pipe with a endcap and a generic top cap that allowed me to put a hook and rope, and sanded down the sides to allow it to fit in the tube
Because of the weight and the weight, it is not 100 percent consistent in diameter, with fluctuations of up to 2mm in diameter at some points. The inside of the launch tube was also sanded around this to aligning it ensures consistency.
The 3 inch PVC pipe is for the launch tube itself. I was sanded down from the inside to keep the mass's path smooth after drilling the holes, and to remove any extra material from the drilled holes.
how do you make the seal at the bottom, where the drop mass compresses the air?
So if the main pipe is 4 inches (inner diameter i assume), what was the diameter of the pvc pipe used to make the puck in the inside?
hey! i used this very same design and it worked pretty well; however my design had a issue: the 3-way Tee PVC would not sit on the flange properly since there was a little gap in between the 2 of them. this would cause the design to wobble even after using a ton of glue. i see that your design never wobbled and was wondering how you prevented that. thanks!
How did u make the mass that is being dropped?
By pulling the metal rod from the holes on the 4-inch pipe.
used a short PVC pipe with a endcap and top cover and sanded down the sides to allow it to fit in the tube
how do you decide where to drill in the air vents?
also was sanding the onlying you did to minimize the resistance or do u use baby powder or line the inside with something aswell.
The launch holes, are the length of the launch height of the PVC pipe divided by 5 for the number of holes, and the other holes were added as needed to ensure enough air release before launch.
@@3DModelingSTEM yea but was it randomly decided to drill the other holes or was there some work dont to figure it out.
For the air compression system, when the mass is dropped, does it just hit the bottom and that produces the air pressure to the smaller tube releasing the ball or how does that work?
The mass, when released, first needs to build up speed. The holes along the tube (non launch ones) allow it to build up speed without launching the ball. At the bottom, it hits a sealed area at high velocity, leading to a final compression burst and launch.
@ so the air goes down the drop tower and the pressure launches the ball out? Is there anything more compressing the air of the sort?
how did you make your falling mass? (not how you drop it, but the materials)
I used a short PVC pipe with a endcap and a generic top cap that allowed me to put a hook and rope, and sanded down the sides to allow it to fit in the tube
How did you make the the puck itself?
It is a PVC tube within a PVC endcap and topcover, with metal balls inside.
What it is on the bottom that pushes the ball out
Nothing but air does the job. The ball is placed in the thinner pipe, and air from the larger one pushes it out.
@@3DModelingSTEM so the container created enough force through air pressure
nothing
How did you make the mass to drop down the 4 inch pipe
@@boredweeb6609by pulling the metal rod from holes on the 4-inch pipe.
why do you have to align the weight?
Because of the weight and the weight, it is not 100 percent consistent in diameter, with fluctuations of up to 2mm in diameter at some points. The inside of the launch tube was also sanded around this to aligning it ensures consistency.
In the video you mentioned a "3 meter pipe that was sanded down." Did you mean that you used a 3 inch diameter PVC pipe to make the mass?
The 3 inch PVC pipe is for the launch tube itself. I was sanded down from the inside to keep the mass's path smooth after drilling the holes, and to remove any extra material from the drilled holes.