spiney Posted April 15, 2012 Report Share Posted April 15, 2012 Well not cams, but rotary valves. Can stepper motors be utilised to drive a rotary valve? The torque won't be too high, but do such motors exist that have a duty to run almost continuously? If the crank revs at 15,000 rpm, the steppers would also rev at 15,000 rpm but would pause at critical stages to maximise port opening. I don't know enough about the technology but I'm sure there is somebody out there that does Link to comment Share on other sites More sharing options...
kaighn80 Posted April 15, 2012 Report Share Posted April 15, 2012 think you'd be hard pushed to find a stepper motor that could turn that fast and still produce a manageable step. Link to comment Share on other sites More sharing options...
bigkev Posted April 16, 2012 Report Share Posted April 16, 2012 Why would it need to spin ? Can't it just flip through around 90deg and back again? A bit like an exup valve. Link to comment Share on other sites More sharing options...
spiney Posted April 18, 2012 Author Report Share Posted April 18, 2012 There's a bit more discussion here: http://pbmagforum.co.uk/index.php?showtopic=36104 that talks about the issues of inertia. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.