I have been concerned that I am not getting the static rpm that others are getting with similar props.  I have the stock Renesis with the Performance Props 76 X 88.  I seem to be limited to about 4200 rpm.  I hit 4800 once the other day, but did not know what might have caused the change.  I just finished the install of the pressure overflow bottle per Lynn’s msg of a while back and was running the engine up to try and eliminate any air that might still be in the engine.  I noticed that when the rpm reached 4200 or so, I still had about an inch of throttle left.  After pondering that for a couple of minutes, I pushed the throttle to the wall, the engine started to run rough, and I reached over and flipped the cold start switch on….

 

Mein Cod!!!

 

It immediately hit 5350!

 

Apparently I am not getting enough fuel flow to support high rpm.  I have not done the self tuning at high rpm yet, but I would not expect that the fuel flow would be so low as to limit the rpm. 

 

What suggestions do you have?  My ability to self tune has been limited due to cooling issues…especially at WOT!

 

Lynn, it is too early to be sure yet, but your idea for the pressure bottle looks like it is going to help the cooling a lot.  It may not be the complete solution, but it seems to be a step in the right direction.  Thanks!

 

 

Bill B