I have a Maloney 100, and I think I've heard of a Maloney 125. they are 1 cubic inch and 1.25 cubic inch. They weigh about as much as a 3W 106cc twin though. Never ran mine, figured it needed some big old timer type plane. That was 22 years ago and I'm still not ready for the out to pasture slow flying thing yet so it's still waiting for a plane. But some day!