I have 2 small OS-Max, 22GT and 33GT. This is very nice, smooth running engines.
The 33 have over 200 flights. Only changsing the spark plug after running in.
The 22 is in the running in period.
http://www.osengines.com/engines-airplane/osmg1522/index.html
http://www.osengines.com/engines-airplane/osmg1533/index.html
The 33 have over 200 flights. Only changsing the spark plug after running in.
The 22 is in the running in period.
http://www.osengines.com/engines-airplane/osmg1522/index.html
http://www.osengines.com/engines-airplane/osmg1533/index.html