The first Cyclone Rope Piston to be publicly debuted in front of Make MITFirst Robotics and Maker Fare. It is a robust improvement to the the Cyclone Mini. Featuring a balanced symmetry with one gear stage, this actuator was a substantial improvement of performance due to the utilization of Dyneema and Kevlar fibered ropes.

The Cyclone 1 was incredibly fast, efficient, and back-drivable due to its minimal parts count and repair simplicity. It suffered from un-spooling when improperly handled with making this an unlikely candidate to be fully productized. 

Operating load
Cyclone reduction (w/o Gears)
stroke
stroke time
Speed
Mtbf - “life” (strokes)
failure modes
weight
efficiency
height
width
length
contraction ratio
psi
push/pull

160 lbs
7
109 mm
0.6 seconds
182 mm/s
100
Gear teeth breaking and line wear
0.9 lbs
85 %
4.65 inches
3.82 inches
16.25 inches
35.9 %
4.23
pull only


THE CYCLONE 2

July to September 02014