Boomilever B/C

[Jim_R]

Discussion for Boomilever B/C

Boomilever Wiki
Image Gallery
2013 Early Discussion Thread

[thsom]

Who's as psyched for this event as I am?!
I've got a 1.5" binder already full with designs

[iwonder]

I'm not that psyched, but I do have a really nice compression member and I've done more research than imaginable

[noobforce]

Read the Wiki and looking at Boomilever pictures in the Image Gallery. Any other helpful techniques to build a Boom besides using Zigzags for bracings?

[cngu23]

Haven't seen the rules sheet yet but do you attach it to the wall with bolts or make an overhang? I've seen both types used in the past.

[retired1]

I'm not that psyched, but I do have a really nice compression member and I've done more research than imaginable

What have you settled on? beam, I beam, box beam, truss, tube or????
Relative size??

[iwonder]

Now there's the trick, isn't it? I've got two ideas in mind, both significantly smaller than what most people will probably build, one's a tube, and the others a rectangle, however the catch with both is how I attatch them to the tension members. I expect to be told by everyone that sees it that I'm crazy

[thsom]

Have these 'radical' designs been tested yet? If so, how well have they held up?

[fanjiatian]

How have you guys been connecting your tension and compression members?
If possible, draw a diagram (for my sake)

[retired1]

Now there's the trick, isn't it? I've got two ideas in mind, both significantly smaller than what most people will probably build, one's a tube, and the others a rectangle, however the catch with both is how I attatch them to the tension members. I expect to be told by everyone that sees it that I'm crazy

Not crazy. It depends on a number of things. The main problem with a compression member is buckling. If it is built very strong and rigid, it probably will weigh too much to be competitive. Bracing from the tension member will preclude or reduce buckling in the vertical directions. If the compression member is two beams, then very light X bracing between them will reduce / eliminate buckling in the horizontal direction.

So crazy, no if it is built light. Testing will tell.