I just picked up a used model tech fun fighter P-51. the plane calls for a .25-.36 two stroke. I've read claims of 140 MPH with a .36. I just finished installing a .46
the recommended CG is 75-80mm from the LE at the fuse, I have it at 3" from the LE and still have to add the RX battery, so balancing will not be an issue. what prop would you guys recommend for max speed out of this set up. the engine is only an OS .46 LA so crazy RPMs aren't going to happen. here's a few pics