- [Instructor] Previously, we added subassemblies
for the rear wheel and the crank set using STEP files.
And in this video, we're going to continue that process
and add the seat and the front fork and handlebars.
Let's start with the seat.
So open your current assembly in SOLIDWORKS,
and then find the folder on your computer
where you saved the exercise files.
The file we want to import is the Seat Assembly.STEP file.
So just drag this into SOLIDWORKS.
That will start to import.
And when it does, it should look something like this.
Let's move it to roughly the correct position
and then mate it in place.
So I'm going to select the circular face of this tube
and also a circular face of this tube
and make those concentric.
Then I'm going to spin the seat around
so it's facing forwards,
and then I'm going to find a plane in the seat assembly,
such as the front plane,
and then select the corresponding plane in the assembly.
So for me, this was the right plane.
And I'm going to make those parallel, like so.
Then we just need to set the height of the seat.
So to do this, we can zoom in.
We can select the top of this tube and then spin around,
and let's select the inside of the seat clamp.
So it's just that small face inside there,
and let's make those coincident.
So the seat is now fixed in place.
If we wanted to change the height of the seat,
then we could open the seat subassembly,
and we could adjust the height in there.
Now all that remains is the front fork
and handlebar section.
And let's follow the same process.
So find that Front Fork Assembly.STEP file.
Let's drag that into SOLIDWORKS,
and that will start to import.
This one might take a little bit longer
'cause there's a lot of detail in it and quite a few parts,
but when it does, it should look something like this.
We can now mate this in place in the usual way.
So I'm going to select a circular face here,
also select a circular face of the head tube.
And I'm going to make those concentric.
I'm just going to spin it around,
so it's facing the correct direction,
so something like this.
Might be a bit tricky to spin.
And then for the up-down distance,
let's just zoom in.
And the top face of the cup here,
so select that face, should be coincident
with the bottom face of the head tube here.
So I'm going to also select that face.
I'm going to make those coincident.
And then we should be able to move
the handlebar around like this.
So if we have a look at this in 3D, it generally looks okay.
If we zoom in, we can see that the tire is
very, very close to the bottom of the fork here.
So this shows us
that we probably need to increase the fork length.
If we look from the side, we can see on the layout sketch.
So maybe we need to increase that 376,
or maybe we need to use smaller tires
maybe something like a 26 inch instead of a 700c.
So by adding in these final components,
this can help you spot any problems
like this at the modeling stage.
Imagine if we had built this entire frame in real life,
and then we only saw this issue
when we were finally fitting the wheels.
So this is one of the huge benefits of modeling in CAD.
At this stage, you can continue adding extra parts
if you have them,
or if not, you can save this completed assembly.
If you want to check your assembly
against the exercise files,
then the starting point of the next chapter, chapter six,
is the same as the end point that we're currently at now.