credit Flometrics / caption: the vernier rocket engine was fired for 6s in January 2009 

Flometrics’ Steve Harrington is planning to test fly his biodiesel rocket this Saturday. A successful static firing test of a vernier rocket engine using the biofuel took place back in January

Harrington says

We are planning a flight test of the Biodiesel rocket this Saturday March 7th, weather permitting. (we cannot launch into clouds) Providing everything goes as planned, we will send out a press release and have HD video and photos available.