Preliminary designs for
DIY FFB Rudder Pedals. See Below for updated design....
As a sister project to the DIY FFB
Flight Yoke I've been looking at the design of a set of
generic force feedback rudder pedals.
The design is shown on the right. The pedals would have a
force output of approximately 23 kgf (50 lbs) and a movement
of approximately 150 mm.
An interesting task in this design was to achieve the fairly
large gearing ratio required between the brushless motor
shaft and the foot pedals without using an expensive
gearbox. To do this I've used a toothed belt driving a
torque wheel segment; the ratio of the segment radius to the
motor shaft pulley radius lifts the drive torque by about
16:1. Further uplift is obtained by the positioning of the
The foot pedals are in steel, and the wide stable base structure is
timber - so lots of scope for securing the pedals to the
simulator cockpit structure.
The design also allows for the future addition of toe
brakes, and for mechanical linking between pedal sets in a
dual control setup.
The pedals will use the same smooth
brushless motor drive used
for the FFB yoke and will pick up the rudder output channel
from the BFF CL Software.
I'll post more details when I have them.
UPDATE Jan '15
It's been a while..... I've re-jigged the pedal design to
suit a small sim I'm building for myself. In this design
I've gone for a 16:1 planetary gear head on the motor to
deliver the required torque uplift. An the pedals will be
mounted inverted - suspended from above as this suits my
Here's an image... it's a much simpler design to build.
UPDATE June '15
I've completed the build of the new design pedals and have
fitted them to my small generic GA sim for testing. Here's a
couple of photos...
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