We must begin by cutting blades with balsa of 5 / 10 of the fixture in pieces of credit cards, the plan of the blade is on the site of MPS.
The diameter of the propeller is 8cm.
We humidify the blades on a piece of paper towels.
We still wet all on a sponge.
After a few hours we get the blades wet.
For the camber we will bring them to dry on a bottle (3cm in diameter), surrounded by a paper towel on which marked the impact of the blades.
We surround blades and the bottlel of a new layer of paper towels everything:
If you have no time you can be dried in the microwave 45 seconds
While the cool blades will prepare the axis from a toothpick :
We drill best possible a hole of 6 / 10.
We netting up just under 8 / 10 :
This small device allows you to adjust the impact of blades, one notices the centre needle is 8 / 10, which corresponds to the axis. The angle is 25 °, which correpond to a 3cm pich, the propeller is tractive.
Place the toothpick in the needle, it must be squeezed !
We adjust the tip of toothpicks on the axis :
We adjust the height with a blade cutter, for example.
The first blade is checked.
We should see the camber like this:
On a piece of tape files we put a drop of thick CA :
The CA is deposited at the end of support blades with a toothpick
The first blade is stuck, we wait a little.
It runs:
And we glue the second blade:
We removes the propeller of the needle and be strengthened with the CA and an accelerator.
We do the first test with the device (see tester propellers)
Now we have to balance :
To balance can be sanded, but also add weight :
Some small pieces of tape enough
New test, it goes better!
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