Quote:
Originally Posted by saskya
quad front arms , distance??

Just a bit of Math. You could calculate the smallest you can go and still use 10 inch props. Or just find the distance after a given length of an arm. For example, if it was smallest quad that would use 10s. Plug in 10 for the hypot. Maybe 10.5 for clearance. Then your two, 45 angles since its a quad. Will give you the length of arms. Like n3mo said simple math. I've never built a custom quad before. But I did stay at a holiday inn express last night.