Speed control for a 25 hp steam engine.
Hi,
I am constructing a modern 25 hp steam engine (7borex12stroke 150RPM). I need someone to build a simple speed control that will power a 12 volt linear actuator which will operate a 1 1/4" ball valve controlling steam volume. The engine will have an alternator w/battery. A pick-up will be needed to sense RPM (I thought a magnet switch or Momentary on micro or something) . The controller needs two pots, one for the actual rpm setting and the other a sensitivity for delay so the actuator isn't activating for every little change. If a design is made, I can put the board together if need be. The actuator SPECIFICATIONS
Stroke Nominal 6"
Voltage 12 DC
Push/Pull Ratings
Dynamic 110 lbs. max
Static 500 lbs. max
Amps 3.5 Duty 20%
Avg. Extension Speed 0.5"/sec.
When a load is placed on the engine, the reduction in rpm is sensed and the steam valve opens allowing more steam pressure to keep rpm with in a range, say + or - 25 rpm.There is a huge flywheel to help with fluctuations. Loads wont change much. Once a load is placed, the load will be constant-A/C generator-water pump-etc.
Would there be anybody here that can help me?
Jim