One of the options for the multi-strike
 rotary engine ignition is to use an off the shelf
 DC to DC converter.
 www.Apowerdesign.com has a suitable product
 for about $150.
 Model number is S30-S300 The down side is 4 to 6 weeks
 delivery.

 It is probably more robust from an environment point of view
 and reliable than the 400 watt 12 volt to 220 volt
 AC car inverter. It is also much smaller at 2" by 2" by
 .5" and far far lighter at 2.6 oz.

 What do you think? Is it worth the extra $100 for a one
 rotor and $200 for a two rotor version.

 I could use just one  for a one rotor ignition system.

 They do have a 150 V push pull unit in stock that will work
 if slightly modified called the S30-D-300 so I ordered one.
 I'll use that to build a prototype.

 Paul Lamar


The output is only 30 watts. An MSD 6cyl (same fire rate as a 3-rotor)
draws 1 amp (12 -14 watts) per thousand rpm.

Victor Roberts.

We have four sparks, per leading spark plug, per rev,
per rotor and one power supply per leading spark plug.

Since the PS is rated at 30 watts it does not mean
the PS will draw all 30 watts  out of the battery.

If we need less than or more than 30 watts per rotor
at 7500 RPM  I can scale the Power Supply. This is just
a first cut.

I am also just going on what the Aussie system was drawing.

A lot of racers use one MSD system per spark plug.

I don't think we need this system on the trailing
plugs. A couple or 3 MSD's ought to be fine
for the trailing plug.

Paul Lamar