ORIGINAL: kmtranmd
I've always had trouble clocking my Magnum with Weston 50 motor in it. Difficult to fly it close and steady enough for the damn gun to lock on. I got reading of 137mph couple times but think it's a little faster than that. I bet anyone saying 200mph is only guessing at the speed. I'd like to see a youtube clocking of a fly-by before I will believe the 200mph quote.
The folks that have clocked them report speeds in the 160-165 regime. Never clocked mine. 200 in a dive maybe, not that it has been substantiated. They are quick though, no doubt about it. Fast, but not 200 with a .50.
MJD