Originally Posted by
DrScoles
Slippery airframe? If its anything like its big brothers, its a draggy airframe. I can't recall the term used, but jets like the futura and Avanti are purposely draggy so the top speed is somewhat aerodynamically limited. Anyone help a brother out on this?
My big avanti has never remotely approached 200mph. It has near double thrust to weight ratio but thrust is for tricks… Not speed ;-) I want more thrust to take off from rough grass fields, thats it. As the gentleman from Italy above alluded to, the cost of the P20 is a deterrent for a lot of modelers. So, this is a nice option, even if it has … dare I say… too much thrust… LOL
I know I know, I just did the maths from numbers we got from Jack. He is a strange person to argue with. But I think you agree if the Avanti mini does240mph on the K45 it's a slippery airframe. Faster than a Skyrunner 300 :-)
Originally Posted by
jfetter
It's also NOT a slippery airframe at all, the drag coefficient is quite high and it's designed for F3S aerobatics, not speed. Seba himself doesn't like the idea of anything lager than the P20 installed without a proper warning about the airframe not being designed for more power, being given along with it...
Jack
I know that very well Jack. Either your top speed is not true or your thrust to low. I just did the maths that I can proove are correct.