I have a friend who bought a new engine form “Hayes Rotary” up here in Redmond, WA.  These guys are very knowledgeable guys.  They told him to keep the RPM’s under 4000 for the first 1,000 – 1,500 miles to allow the engine to “break in”. 

 

I’ve never heard of this for rotaries. That represents about 20 hrs of running before first take-off in an airplane (assuming more than idle RPM). 

 

Is this needed?

 

Joe Hull

Bellevue, WA

Cozy MK IV