Boomilever B/C

[bernard]

Thanks for all the info!

I actually realized that I had a few more questions about construction:

1. What is a lamination?

2. How do you build your base? I don't know how to calculate the force the base undergoes, so I don't know how to build it efficiently. I'm thinking of putting a stick of 1/4 x 1/4 inch bass as the base and glue it to my 3/32 square bass tension members. Is this viable?

Thanks again!

Lamination is adhering together sheets of material, in this event wood. An advantage is you can alternate grain orientation making the material more consistently strong in all directions. Plywood is made by gluing plies of wood with adjacent layers glued with grain at alternating angles.

[MadCow2357]

Thanks for all the info!

I actually realized that I had a few more questions about construction:

1. What is a lamination?

2. How do you build your base? I don't know how to calculate the force the base undergoes, so I don't know how to build it efficiently. I'm thinking of putting a stick of 1/4 x 1/4 inch bass as the base and glue it to my 3/32 square bass tension members. Is this viable?

Thanks again!

The method you described is how I've been building my bases. However, make sure to increase the surface area of the bass tension members.

[Anonymous15]

Ok, I understand. I'll make sure to get the alignment right too.

I was just rereading Aia's boomilever guide, and I noticed that the distal end has no bracing in the compression members (which made sense, as that's where the bucket hangs under). But won't that make the distal end really weak? Isn't bracing supposed to span the whole compression member?

And sorry for all the questions, but the answers are really helping me out!

[MadCow2357]

Ok, I understand. I'll make sure to get the alignment right too.

I was just rereading Aia's boomilever guide, and I noticed that the distal end has no bracing in the compression members (which made sense, as that's where the bucket hangs under). But won't that make the distal end really weak? Isn't bracing supposed to span the whole compression member?

And sorry for all the questions, but the answers are really helping me out!

That is true, without bracing the distal end will be weakened. There is no "best way" to brace the distal end, though some people have found suitable solutions. Personally, I just add extra ladder pieces around the region of the loading block, and that has worked I guess. And don't sweat asking a lot of questions, all of yours have been good ones. Plus, this is the way that we get better and learn from each other!

[sciencecat42]

As far as I know, the bracing is mainly meant to keep the compression members from twisting or bowing. A 5cm segment without bracing should be fine.

[idislikeboomi]

Draw a full scale drawing accounting for the j hook at a distance of 4.5 cm. That's very important.

Isn't the j hook at a distance of 2.5 cm from the wall, not 4.5?

[sciencecat42]

Draw a full scale drawing accounting for the j hook at a distance of 4.5 cm. That's very important.

Isn't the j hook at a distance of 2.5 cm from the wall, not 4.5?

Only the end of the J part is, the actual rounded end is 4.5.

[idislikeboomi]

Isn't the j hook at a distance of 2.5 cm from the wall, not 4.5?

Only the end of the J part is, the actual rounded end is 4.5.

This still isn't clear to me, what are you defining as the "end of the j part"? To me, its the inside of the round end where the base sits. Is the part where the base sits is supposed to be at 2.5 cm from the back wall or 4.5?

[idislikeboomi]

Actually never mind, I see my mistake now.

[MadCow2357]

Isn't the j hook at a distance of 2.5 cm from the wall, not 4.5?

Only the end of the J part is, the actual rounded end is 4.5.

This still isn't clear to me, what are you defining as the "end of the j part"? To me, its the inside of the round end where the base sits. Is the part where the base sits is supposed to be at 2.5 cm from the back wall or 4.5?

If you tip "J" sideways, the end is the rounded half circle part. sciencecat means that the distance from the outside edge of the rounded half circle part of "J" is 4.5 cm from the wall. I'm pretty sure the part where the base sits is about 4 cm from the wall.