Hi Steve,

The 20CC is adequate to power the plane as designed (it's a 1.20 size bird), but it's going to come up short on the weight needed in the nose, much like the 1.20 size motor recommended for the plane. One reason the 30CC engines out there right now have become popular is that the total weight hung on the nose is right around 40 or 41 ounces, as I recall, very close to the total engine/muffler/EDI ignition weight of these. The 30CC's power-to-weight ratio is of course much higher.

Guys who are running the Saito 1.20 and 1.50-sized glows are claiming that they have adequate power with no complaints, and that theirs fly very well, but some have also admitted they'd like a little more power to get out of trouble.

The DLE 30s are very popular, some of us have Syssa 30s, some have powered them with far more, but the 30s are more than you'll ever need. Mine is a Syssa 30, and it fits easily in the engine compartment, with no problems at all.

Hope this helps you out.

~ Jim ~[8D]