Yes, that lump definitely rocks. I have been using a Tower 75 for 15 months
now, and am very pleased with this engine. Lots of power. No problems at all.

I might add to my previous post that the APC 14 X 4W will decrease the speed
a little, and will also act as air brake to some extent. I like that, since it keeps
the plane from floating on landing, etc. You can buy this prop for $10.00 U.S.,
from the hobby shops, or order directly from APC for approx. $12.00.