Re: Unburned fuel

[david-bartlett]

I find I get a lot less rainbow if I run the motor pretty hard, as opposed to lots of slow speed, idling, trolling etc.

Th RD size motors are very inefficient for that type of use. Not real efficient at speed either, but lots of fun! Synthetic oil will help, but will not eliminate the rainbow.

I have realized that you cannot please everyone, so now I spend more time doing what makes me smile.