Elevator & Diving Controls #5

Yesterday I started welding the handle to the hub.  First I had to add a little bit to the top of the hub then cut it to about 10 mm long (Fig. 3) so that I could add a piece of steel and have it angle away from the curve of the hull.

Fig. 1
19/12/2015

Fig. 2
19/12/2015

Fig. 3
19/12/2015

Now I'm adding a piece around 8 cm long to the top of the hub at an angle of about 20 degrees.  This way I can have the controls sitting as close to the edge of the drum as possible and not have the handles hitting the top of the hull.

Fig. 4
19/12/2015

Today after work I added the threaded rod to the top of the lever.  This is where the handle will be bolted to.

Fig. 5
20/12/2015

I was originally going to make the handle from pine dowel, about 25 mm in diameter, but after drilling a 6 mm hole straight through it's center to slide onto the threaded rod, I saw that no matter how I drilled it, it would always follow the grain and be off center.  So a little annoyed at that, I decided to make it from aluminium.  Below I'm turning it down to 30 mm in diameter.

Fig. 6
20/12/2015

Once the center hole was drilled I began sanding it to make it shiny and smooth.

Fig. 7
20/12/2015

Nice.

Fig. 8
20/12/2015

In one end I drilled a 19 mm hole about 9 mm deep.  This will have a washer and a lock nut inside to keep it on the lever.

Fig. 9
20/12/2015

All bolted down.  I'm glad I made it from aluminium now.  It's stronger and much nicer.

Fig. 10
20/12/2015

Here's a quick little video showing the controls in operation.