Thanks guys
Mike, I'm really impressed with this engine, so much so I now have the new 1.60 version with the standard carb for the Tempest.
Easy to adjust, excellent transition from idle to full power and doesn't seem to load up in the midrange.
This engine is supposed to be able to turn 16x12 prop exactly the same rpm as the YS140FZ so it made it very interesting and for a $250 I think this engine is a bargain. Mine is barely broken in and it is turning 17x12 at 7600 rpm and that on a straight fuel.
Of course the carb was not designed to run on alcohol so I don't know how long the rubber diaphragms will last.
All in all I think this is a fool proof engine, so it must be perfect for me

Even though my foam Typhoon was more meant to be a sport pattern plane it should not weight over 5 kg, it also makes building more fun and challenging. The veneer being heavier than balsa, it was very difficult to keep it light. To keep it under 5 kg there where few things I had to change, most important, the wing tube (the one I planed to use turned out to be 100 gr heavier than the Gator tube). Ruddercables, wheels, more lightening holes, you name it, everything counts.
With these changes, the plane is barely under the limit, and I mean barely ! By weighting every balsa sheet for the fuselage I can build this plane the way I did it, around 4,8 kg. I don't think I can build it lighter than that, except using contest balsa.
The important thing is I had fun building this plane and learned a lot. Now I just hope I can improve my flying with it.

Yes Bokuda, it is a very nice field. Unfortunately despite all the warnings from the club, the town council decided to plant a soccer field next to our field. So I don't think we can keep it much longer