[Quique]

Boogie, long answer for your question. I will just go to basic concepts. Every new airplane design is an extension of the previuos designs. This is how we learn little by little. I like drawing at actual size and I use a wall and enough room to be able to watch my designs from good distance and observe them as they were flying. Mainly my experience and some calculation will tell me what is right. Then the looks and style of the airplane comes from taste. The challenge is combine this two things. About coupling are many things can be done and believe me is not just one single thing, Sorry for being short but I do not know how to keep my writing not too long and boring. Yak is a very special airplane for me. TOC 2002 was the debute of the Yak54 as R/C version in high level competition. When my dear friend Wayne Ulery built for me those 2 beatiful Yaks we did not have clue by then how popular that airplane would be. My Yak design produced by 3W and the one we (QQ aircraft)offer are both good designs. The one we produce (Yak 54 120") cost much less and is the latest design with all the upgrade after 5 years of experience flying my 150cc Yaks. Take care and good luck. Quique

	Quote: Originally Posted by Boogie
	How do you design your new planes like the Brio, Euphoria? What do you start with? Basic proportions or just sketch something that looks about right and then adjust it to your needs. When flying a new design it sometimes pitches and rolls. If you would make a second version what would you do to tweak this out and when, for eg. if it pitches to the belly what would you change? Congrats for your passion! Keep up! You were the one that started Yak 54 obsession and my biggest dream is to get the 3W or your Yak!