Rocketstove experiment

Rocketstove

We carry 2 stoves that burn petrol. But one of them needs new parts that we can not find here in Asia. We'll have to wait for them. The other one is still fine but also sometimes acts strange. It would be cool to be totally independent on them and on fossile fuel in general so we decided to build a rocketstove. Watched an instruction video online here..  
http://www.treehugger.com/clean-technology/build-ultra-efficient-diy-wood-gasifier-backpacking.html
Our conclusion a Rocketstove sucks and works only if you want to make a cup of tea or so. Not for cooking. It is too small and it get clocked with ashes to sufficates the fire quickly.  This is our stove. If you have any tips how to improve our stove. They are welcome. We still have it and wanna use it because the idea is great.