Now for something completely different, the Helix
(Not recommended for beginners)
|24 mm Helix - $20 each
Recommended motors - D11-P, D12-0, D12-3, E9-P, E9-0, E9-2, E9-4
|18 mm Helix - $15 each
Recommended motors - A8-3, B6-0, B6-2, B6-4, C6-0, C6-3, C6-5
|13 mm Helix - $10 each
Recommended motors - A3-4T, A10-0T, A10-3T, A10-PT
Top to bottom 13mm, 18mm & 24mm Helix
rockets require a specialized launch pad (see below) consisting of a
strong base and a short 1/4" rod or bolt. Detailed plans for a
low-cost pad using readily available materials is included with each
Plans for DIY Monocopter Launch Pad
launch pad for monocopter should be sturdy and fixed firmly to the
ground. Never attempt to launch the Helix from a standard launch pad
with a long launch rod. A
suitable launch pad can be constructed from the following materials:
- 2x4s, three, 18 inches long and one, 36 inches long. The
lengths need not be exact.
- 4 inch long, ¼-20 carriage bolt and 3 nuts
-3 inch long wood screws.
a 1/4” hole in the middle of one of the short 2x4s. Insert the
carriage bolt into the hole and secure it tightly with one of the nuts.
the long 2x4, perpendicular to the bottom of the short one with two
screws. Attach the two remaining short 2x4s to the opposite ends of
the bottom of the first short 2x4 with two wood screws each.
Thread the two
remaining 1/4-20 nuts on the bolt and use them to adjust the height of
the rocket above the pad.
13 mm Helix - Recommended motors A3-4T, A10-0T, A10-3T, A10-PT