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 Unlike my colleagues
from the electronics and digital group, I need to bother with things
like wear, corrosion, vibration and longevity. Mechanical design
strongly determines cost of manufacturing, of shipping and of maintenance.
So I spend much time on developing good concepts. Then I build models
and have them tested over and over to simulate the kind of life
cycles we expect. Some run for weeks, day and night, with counter
readings of 1 million and over!
Speaking with
our service people, it became evident that pedal failures and damages
to the cart are not seldom. These are the items most exposed to
rough handling. So I designed an I/V pole drive which is integrated
into the OS3 Base Unit where electricity and control circuitry are
readily available and EMI hardening and CE marking are granted.
So the cart is just stable mechanics and can be disassembled for
transportation.
The pedal is
to my satisfaction too. I could rely on my design experience with
the CataRhex pedal. But this time I convinced product management
that weight should have second priority. As a result, you can do
duallinear control extremely accurate and adjust pedal resistance
to your liking. And for those who go for less sophistication: the
OS3 accepts the CataRhex pedal too.
OS3 dual
linear pedal: reliable mechanics. The I/V pole drive is so compact
that it fits inside the base unit.
 
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