Need help from the experts. I am looking to buy a plane (Stearman...I believe 1/4 scale) from a friend that has a Quadra 75 in it. I have access to a good deal on a 3W 85 Twin.


Trying to find out which is more powerful.


Thanks.


Dennis

The 3w 85 will have more power for an aerobatic or sport plane type of application.
Garrett Morrison

Agree! The Q75 is a good old engine but is pretty well maxed out with a 24-10 prop. I'm sure the 85 will far exceed that. I've flown the Q75 quite a bit both in aerobatic planes and in a warbird and it is most at home in the warbird where it pretty much stays wound up most of the time. It just doesn't have the low and mid-range torque the more modern engines have. After all, it was designed to cut trees.

Hi Dennis, do you have any more planes for sale..im in Ocala Fl..thanks Paul..i like big stuff and bipes too any size