Boomilever B/C

[seitanBacon]

I'm sure this has been answered at some point previously in time, but is there a place where I can buy the testing apparatus seen at most competitions? If no, are there plans or guides for how to build one?

The SOINC page and event supervisor guidelines outline the testing apparatus and a general guide on how to build one

[xiangyu]

I'm sure this has been answered at some point previously in time, but is there a place where I can buy the testing apparatus seen at most competitions? If no, are there plans or guides for how to build one?

The SOINC page and event supervisor guidelines outline the testing apparatus and a general guide on how to build one

Yeah I saw that, but at most competition I go to they have a lever that participants pull on to release the sand, is there a guide on how to build that?

[dholdgreve]

I'm sure this has been answered at some point previously in time, but is there a place where I can buy the testing apparatus seen at most competitions? If no, are there plans or guides for how to build one?

The SOINC page and event supervisor guidelines outline the testing apparatus and a general guide on how to build one

Yeah I saw that, but at most competition I go to they have a lever that participants pull on to release the sand, is there a guide on how to build that?

I've built 8 or 9 of these over the years and would be glad to assist. My design is not nearly a pretty as some, but is very functional and very portable. I've used the same unit now for 20 years, so I'd say it is also fairly resilient. If you'd like some help PM me with an email address and I'll send you some pics of it.

[stringman]

Just wondering, how many of you notch your wood during building? (In other words, create little dents in your members to create a better joint?) Does it actually help? It takes me so long to notch them so I want to make sure that it's actually worth it.

I don't believe that is a common practice when building boomis, it damages the wood structure and gives no significant, if any gains as opposed to gluing a piece of wood right on the other.

Last year me and my partner just cut angles on the ends of the wood we were gluing instead of notches so we achieved basically the same effect as a notch and it worked fine and weighed less

[dankdecidueye]

How are scores looking so far? I'm kinda stuck at 1000 but I'm trimming the mass down.

[MadCow2357]

How are scores looking so far? I'm kinda stuck at 1000 but I'm trimming the mass down.

I've heard reports of someone breaking 2.7k

[xiangyu]

How are scores looking so far? I'm kinda stuck at 1000 but I'm trimming the mass down.

I've heard reports of someone breaking 2.7k

With the bonus this year, that sounds entirely possible - it would take a boomilever at around 7.4 g to hold all 15 kg. Though it would take some serious effort and many trials.

My first booms were around 1.4k with bonus, and expecting around 2 k by the time regionals rolls around. (hopefully)

[musicalwhang]

Hi, I have a question about the main compression members. I am going for a double beam compression design this year and was wondering what kind of orientation I should use. I am planning on using 1/8x3/8 balsa for the compression members. My question is should the 3/8 part be facing up to allow for more surface area to glue on horizontal bracing or should the 1/8 part be facing up to allow for more surface area to connect the compression and the tension members together?

[RobertYL]

How are scores looking so far? I'm kinda stuck at 1000 but I'm trimming the mass down.

I've heard reports of someone breaking 2.7k

Can confirm.

[MadCow2357]

How are scores looking so far? I'm kinda stuck at 1000 but I'm trimming the mass down.

I've heard reports of someone breaking 2.7k

Can confirm.

Lmao