Just so I understand what your saying, you'd go with the biggest glow radial that will fit under the hood (maybe the 77 cc).
Yes!
A larger engine working easy will sound better & last longer anyway.
As an example I had a Gypsy Moth designed for a 40 4 stroke engine but I fitted an 80 size 4 stroke
because I had one & it fitted under the cowl. Yes, it had enough power to aerobat like a Pitts Special
but it spent all it's life chugging around at less than half throttle sounding just like the full size.
Sure, there are cheaper ways to fly a Zero but is that what you really want?
John.
