Now it's time for the hardware.
Hydromarine offers plastic rudder and very nice ball bearing, straight
2 mm shaft with motor holder and coupler but I tought to explore
the limits of this nice little hull, adjustable, lightweigt & very
light running drive with 1.2 mm steel (piano) wire in teflon liner
would be the way to go after my experiences on my bigger mono boats.
Here are the components to be soldered: |
 |
| Material is brass and thin stainless steel. |
| Rudder shape and dimensions are per plans, 2 mm steel wire, rudder
holder, 40 mm long strut as per plans and rudder arm. All to be
hard soldered. |
 |
| If you don't have experiences find some that does this job. Small
sizes require some good positioning but since they are so small
soldering is a breeze. |
From now on I will describe building which was made in 12 hours.
Here are soldered components already polished and shaprened together
aluminium L shape holders. Thin aluminium L shape profile can be
found in hardware stores (here in Europe for example in Bauhausâ). |
 |
| Notice the carbonfiber turnfin about the thickness of 0.5 mm as
plans suggest (suggested material is fiberglass tough) but I found
it to weak to hold well in the corner. Later I will make it from
1 mm duraluminium. I used M2 screws all around installing the hardware. |
| Here is the how the strut with the aluminium 3 mm drive tube looks.
On the end there is small aluminium piece glued with 603 Loctite
on the tube. Outer diameter is just little bit sanded to get enough
slop to have few degrees of adjustment. |
 |
| Motor holder Ŕ nothing really special, made from 1.5 mm thick
scrap fiberglass. Lightly sand on the bottom and small holes ensure
good hold of the 5 minute epoxy mixed with microballons. Side holes
are for some weight saving tough |
 |
|
