On 11 April 2018 at 15:30, David Berndt <ber...@uberwin.com> wrote:

> I'm looking to output about 1000lbf in a linear direction via a crank/slider
> or ballscrew with peak speed of about 1m/s.

Have you considered hydraulics? (Or possibly even pneumatics).

Hydraulics can be pretty quick with a servo-valve cylinder.
For example.
Admittedly the hydraulic ring main at work that runs our 4 of these
rigs has 20  x  50hp pumps in parallel!

"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
— George Fitch, Atlanta Constitution Newspaper, 1916

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