[Help] Technic brick connection question

[brettbarbaro]

Hi! I am enjoying Sariel's book tremendously! I'm having trouble figuring out Figure 3-35, with the studs of studded beams inserted into the holes on opposite sides of a studless beam. The caption says, "This connection, with studs inserted into the beam's pin holes, is sturdy but considered incorrect. This is because - unlike in the previous examples - the spacing between the bricks' pin holes is not equal to a full number of studs. In terms of LEGO units, the bricks are misaligned." But when I try it, it seems to me that the spacing IS equal to a full number of studs. In contrast, the setup in Figure 3-34 DOES appear to be misaligned by this definition. I must be misunderstanding something. Can someone help me?

Thanks, 

B

[Jurss]

For 3-35 spacing really could be correct between both bricks, but not for 3-34

Don't know if @Sariel is here

[Lipko]

I think he refers to the holes ín the studded brick. Those don't align properly of you want to connect them perpendicularly. I guess ...

[pleegwat]

16 hours ago, brettbarbaro said:

Hi! I am enjoying Sariel's book tremendously! I'm having trouble figuring out Figure 3-35, with the studs of studded beams inserted into the holes on opposite sides of a studless beam. The caption says, "This connection, with studs inserted into the beam's pin holes, is sturdy but considered incorrect. This is because - unlike in the previous examples - the spacing between the bricks' pin holes is not equal to a full number of studs. In terms of LEGO units, the bricks are misaligned." But when I try it, it seems to me that the spacing IS equal to a full number of studs. In contrast, the setup in Figure 3-34 DOES appear to be misaligned by this definition. I must be misunderstanding something. Can someone help me?

Thanks, 

B

3-34 appears misaligned here. However actually, the hollow studs on a half-pin can fit the bottom of a technic beam in two ways: The normal way any stud fits, or at a half-offset with the hollow stud fitting over the bump on the bottom of the pinhole on the beam.

[gyenesvi]

That's weird, because as @Lipko says, I thought the problem would be perpendicular alignment of the two yellow bricks, but I just tried to connect them with a 3L beam (after bringing them closer longitudinally), and it seems to be a perfect fit.. On the other hand, 3-34 cannot be connected perpendicularly, so maybe @Jurss is right that it's the other way round. I guess longitudinally neither are misaligned, right?

[Nazgarot]

Because the holes are offset on the studded beams the beams in figure 3-34 has exactly 3 Lego unit between them vertically across the gray beam. In figure 3-35 there is less than 3 Lego units between the holes, and no beam can be connected vertically across the beams using opposing holes. I believe this is what Sariel was refering to.

[Saruzeufel]

The spacing for the holes from techicbrick to liftarm to technicbrick is only like 2.8 units, not the full 3 you would expect. You cannot connect the two technicbricks from hole to hole as there is a slight offset.

Tried taking pictures, but my camera is bad

DSC_2224

DSC_2223

 

Edited April 27, 2023 by Saruzeufel
fixed pictures

[gyenesvi]

1 hour ago, Saruzeufel said:

The spacing for the holes from techicbrick to liftarm to technicbrick is only like 2.8 units, not the full 3 you would expect. You cannot connect the two technicbricks from hole to hole as there is a slight offset.

Ah, you are right, upon better examination, it is indeed a bit shorter.

8 hours ago, Nazgarot said:

Because the holes are offset on the studded beams the beams in figure 3-34 has exactly 3 Lego unit between them vertically across the gray beam.

I think that's just not true, it is in fact about 3.5 units distance, because the holes in a studded beam are further away from the bottom than from the top. You can also verify it by how studded beam layers are usually connected on top of each other: you put 2 plates between them when the studs of both are on top, and the height of 2 plates is less than 1 unit.

[brettbarbaro]

On 4/27/2023 at 1:07 AM, gyenesvi said:

Ah, you are right, upon better examination, it is indeed a bit shorter.

I think that's just not true, it is in fact about 3.5 units distance, because the holes in a studded beam are further away from the bottom than from the top. You can also verify it by how studded beam layers are usually connected on top of each other: you put 2 plates between them when the studs of both are on top, and the height of 2 plates is less than 1 unit.

OK – I see it now. There is a small gap when I connect the studded bricks on either side of the liftarm.
Indeed, when the studs are pointed away from the liftarm, there seems to be 3.5 units distance between the holes. Interestingly, a Tyco plate works perfectly to fill the gap! Tyco plates are .5 units, not 1/3 units like Lego.

Edited May 8, 2023 by brettbarbaro
clarification