PICTURES, SCORES, VIDEOS!!

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scottK2019
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Re: PICTURES, SCORES, VIDEOS!!

Post by scottK2019 » April 11th, 2019, 10:05 am

Ao far, highest 2870, box design boomilever with Div B spec, 2340 can be obtained; tube boomilever, with div B spec 2260.

Epoxy glue for key joint and foam polyurethane glue (Lowe's gorilla expansion glue, you have to remove the extra glue) for secondary joint. It would take 24 hour to develop full strength. You may need to plan 3-4 days to make one boomilever.

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Re: PICTURES, SCORES, VIDEOS!!

Post by scottK2019 » April 11th, 2019, 10:08 am

scioly2345 wrote:New York- Division B
1st- 9.54g holding 15kg
Any other Div B NY scores?
With Tube Boomilever, you may get 2200 above

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Re: PICTURES, SCORES, VIDEOS!!

Post by scioly2345 » April 11th, 2019, 12:06 pm

scottK2019 wrote:
scioly2345 wrote:New York- Division B
1st- 9.54g holding 15kg
Any other Div B NY scores?
With Tube Boomilever, you may get 2200 above
By tube, do you mean a tower chimney type design?
2016-2019 Brother Joseph Fox Latin School
2020-2022 Kellenberg Memorial High School
2020 events - Boomilever, Disease Detectives, Write It Do It, Wright Stuff
God Bless and Rest In Peace Len Joeris (Balsa Man)
“for the betterment of science”

AlexDeKuang
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Re: PICTURES, SCORES, VIDEOS!!

Post by AlexDeKuang » April 11th, 2019, 12:44 pm

scioly2345 wrote:
scottK2019 wrote:
scioly2345 wrote:New York- Division B
1st- 9.54g holding 15kg
Any other Div B NY scores?
With Tube Boomilever, you may get 2200 above
By tube, do you mean a tower chimney type design?
Nope its a literal tube. :)

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Re: PICTURES, SCORES, VIDEOS!!

Post by AlexDeKuang » April 11th, 2019, 12:47 pm

scottK2019 wrote:Ao far, highest 2870, box design boomilever with Div B spec, 2340 can be obtained; tube boomilever, with div B spec 2260.

Epoxy glue for key joint and foam polyurethane glue (Lowe's gorilla expansion glue, you have to remove the extra glue) for secondary joint. It would take 24 hour to develop full strength. You may need to plan 3-4 days to make one boomilever.
Is the box design the compression box or a box made from sheets?

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Re: PICTURES, SCORES, VIDEOS!!

Post by scioly2345 » April 11th, 2019, 3:15 pm

AlexDeKuang wrote:
scioly2345 wrote:
scottK2019 wrote:
With Tube Boomilever, you may get 2200 above
By tube, do you mean a tower chimney type design?
Nope its a literal tube. :)
How does that work? Rolling balsa sheet? Just getting an extra light balsa dowel and screwing a hole in the end?
2016-2019 Brother Joseph Fox Latin School
2020-2022 Kellenberg Memorial High School
2020 events - Boomilever, Disease Detectives, Write It Do It, Wright Stuff
God Bless and Rest In Peace Len Joeris (Balsa Man)
“for the betterment of science”

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Re: PICTURES, SCORES, VIDEOS!!

Post by Dreamz » April 11th, 2019, 4:10 pm

scioly2345 wrote:
AlexDeKuang wrote:
scioly2345 wrote:
By tube, do you mean a tower chimney type design?
Nope its a literal tube. :)
How does that work? Rolling balsa sheet? Just getting an extra light balsa dowel and screwing a hole in the end?
Yeah, how do you connect tube with tensions?

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Re: PICTURES, SCORES, VIDEOS!!

Post by scioly2345 » April 11th, 2019, 4:33 pm

Dreamz wrote:
scioly2345 wrote:
AlexDeKuang wrote: Nope its a literal tube. :)
How does that work? Rolling balsa sheet? Just getting an extra light balsa dowel and screwing a hole in the end?
Yeah, how do you connect tube with tensions?
I agree, don’t you need a flat surface to connect tension to compression?
Personally, I wouldn’t try to overdo the design. Trying to put tension sticks on a curved surface seems too complicated. I tend to stick with a simple design and just trying to get that to get maximum efficiency with that boomi mass, then trying to dial down the boomi mass.
2016-2019 Brother Joseph Fox Latin School
2020-2022 Kellenberg Memorial High School
2020 events - Boomilever, Disease Detectives, Write It Do It, Wright Stuff
God Bless and Rest In Peace Len Joeris (Balsa Man)
“for the betterment of science”

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Re: PICTURES, SCORES, VIDEOS!!

Post by falcon1236912 » April 11th, 2019, 4:51 pm

scioly2345 wrote:
Dreamz wrote:
scioly2345 wrote:
How does that work? Rolling balsa sheet? Just getting an extra light balsa dowel and screwing a hole in the end?
Yeah, how do you connect tube with tensions?
I agree, don’t you need a flat surface to connect tension to compression?
Personally, I wouldn’t try to overdo the design. Trying to put tension sticks on a curved surface seems too complicated. I tend to stick with a simple design and just trying to get that to get maximum efficiency with that boomi mass, then trying to dial down the boomi mass.
check the tube boomilever forum page.

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Re: PICTURES, SCORES, VIDEOS!!

Post by Rossyspsce » April 15th, 2019, 10:46 am

Washington state scores

1. Bothell hs~1200
20. Camas hs black~1740 full load
21. Camas hs red~1720 14008g load

Note: the scale for measuring boom weight was slightly off, rounded to .1 of grams but was not accurate

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